JP6730559B2 - Method for printing scored tablet and scored tablet printing device - Google Patents

Description

The present invention relates to a scored tablet printing method and scored tablet printing apparatus. More specifically, the present invention relates to a scored tablet printing method and scored tablet printing apparatus that can control the top and bottom of printing on the front and back sides to be aligned when a printing pattern is printed on the front and back sides of the scored tablet.

Many pharmaceutical tablets have various codes for identification, such as letters and symbols, printed on them. Further, in addition to the tablet having a smooth surface, there are tablets having grooved score lines so that the amount can be adjusted by breaking the tablet, and the score line is also provided on one surface of the tablet. There are those that are provided and those that are provided on both sides. In the case of a circular tablet, the score line is usually provided so as to overlap with the diameter line on the tablet surface, which allows the tablet to be divided in half.

Conventionally, various tablet printing apparatuses have been proposed for printing various codes on the surface of a tablet having such a score line. As an example of the tablet printing apparatus, there is a tablet printing apparatus described in Patent Document 1, for example. This tablet printing device uses a line sensor camera to obtain information such as the secant direction of each tablet at high speed, enabling printing that matches the direction (angle) of the secant, and at the same time high-speed printing processing. It is intended to be.

JP, 2013-121432, A

However, the tablet printing apparatus described in the above publication has the following problems.
That is, not only in the above-mentioned conventional tablet printing apparatus but also in a similar apparatus, the angle of the secant of the tablet is extracted by analyzing the image data captured by the camera.
Generally, for example, the angle parallel to the moving direction of the tablet is set to 0°, the angle range of imaging is set to 0° to 179° (angle range of 180°), and the difference in brightness that can be a secant within this angle range The angle of the secant is extracted by using.

That is, since the scored tablet has no distinction between upper and lower parts, the inclination (angle) of the scored line is apparently only from 0° to 179°. Therefore, the secant angle is extracted in the angle range of 0° to 179° as described above. However, when the tablets are transferred while being inverted between the carriers, the tablets may slightly rotate. Therefore, it is possible that one surface (A surface) of the scored tablet detects 1° in the A surface angle system and the other surface (B surface) on the back side detects 178° in the B surface angle system. ..

Therefore, even if an attempt is made to print vertically on the A and B sides with the score line of the scored tablet sandwiched between them, the top and bottom of the printing may not be aligned on the A and B sides, and may be reversed. That is, as shown in the upper diagram of FIG. 9(a), one surface (A surface) of the tablet is imaged and the angle of the secant is extracted as 1°, and at that angle, the A surface angle system (Fig. 8(a)). After that, as shown in the figure below, the tablet changed its exposed surface and moved in a state where the left and right sides were further reversed, and when the other surface (B surface) was imaged, it was actually 2° with almost no deviation from 1°. However, when it is extracted as 178° and printed with the print pattern of the B-side angle system (see FIG. 8B) corresponding to that angle, as shown in FIG. The print patterns printed on the side B and the side B are turned upside down.

The present invention was devised in view of the above points, and when a printing pattern is printed on the front and back surfaces of a scored tablet, the scored tablet that can be controlled so that the top and bottom of each printing on the front and back sides are aligned. An object of the present invention is to provide a printing method and a scored tablet printing device.

(1) [Printing method for double-sided scored tablets]
In order to achieve the above object, the method for printing scored tablets of the present invention is a step of imaging the other surface of the scored tablets conveyed by the previous carrier, extracting the angle of the score line, and the previous carrier. Based on the angle of the score line on the other surface of the scored tablet transported in the previous carrier, the step of printing using a print pattern corresponding to the angle of the score line, each score line from the previous carrier While tracing the tablet, the scored tablet is turned upside down, and the left and right sides of the tablet are transferred to the subsequent carrier, and one side of the scored tablet transported by the latter carrier is imaged, and the angle of the scored line is taken. And the step of extracting the score line tablet from the previous carrier to the latter carrier, the angle of the score line in the latter carrier is compared with the angle of the score line in the former carrier, If the angle of the dividing line on the carrier is near the angle of the dividing line on the previous carrier, print on one surface of the secant tablet on the latter carrier using the print pattern corresponding to that angle. , If there is a deviation from the angle of the secant in the previous carrier and the required angle, the extraction angle is corrected by considering it as an angle obtained by reversing the angle by 180°, and with respect to one surface of the secant tablet, Printing using a print pattern corresponding to the corrected angle.

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According to the present invention, for example, it is possible to print by aligning print patterns on the front and back sides of a tablet having score lines on both the front and back sides.
In this description, the exposed side surface of all tablets conveyed by the preceding conveying body will be referred to as surface A, and the exposed side surface of all tablets conveyed by the succeeding conveying body will be described as side B.

By imaging the other surface (A surface) of the scored tablet conveyed by the front carrier, and extracting the angle of the score line, when printing on the A surface and the B surface later on the front carrier. The angle information of the secant to be used is obtained. Next, based on the angle of the scored line extracted in the previous carrier, the print pattern of that angle is printed on the other surface (A surface) of the scored tablet transported in the previous carrier.

While tracing each scored tablet from the front carrier, the scored tablet is turned over and transferred to the latter carrier with the left and right sides reversed. Angle information of the secant used for printing on the B side in the succeeding transporter by imaging one surface (Side B) of the secant tablet conveyed by the succeeding transporter and extracting the angle of the secant. Is obtained.

When the scored tablet was transferred from the previous carrier to the latter carrier, the angle of the scored line in the latter carrier was compared with the angle of the scored line in the former carrier, and the angle of the scored line in the latter carrier was If it is in the vicinity of the angle of the secant of the previous carrier, printing is performed using the print pattern of that angle on the latter carrier. Further, if there is a deviation from the angle of the secant in the preceding transporter by more than the required angle, the extraction angle is regarded as an angle obtained by reversing the angle by 180° and corrected, and one surface of the secant tablet (B Printing is performed using a print pattern corresponding to the corrected angle.

In this way, when printing on the subsequent carrier, the angle of the extracted secant line is not used as the extraction angle without any verification as it is, and the angle of the secant line extracted on the preceding conveyer is Refer to it, and if there is a large deviation, it will be corrected. Therefore, the top and bottom of the print pattern can be prevented from being reversed on the front and back of the scored tablet, and the top and bottom can be aligned.
Regarding the notation of the surface of the scored tablet of the present invention, in order to match the notation of the other invention, the notation on the other surface and one surface, the other surface is described first, There is no particular meaning.

(2) [How to print single-sided scored tablets]
In order to achieve the above object, the method for printing scored tablets of the present invention is to image one side of scored tablets conveyed by a first carrier and extract the angle of scored scored scored tablets. And, while tracing each scored tablet from the first carrier, the scored tablet is turned over and transferred to the second carrier with the left and right sides inverted, and the second carrier is In the second carrier, a step of imaging the other surface of the scored tablet to be conveyed and extracting the angle of the score of the scored tablet showing the score, and the angle of the score in the second carrier. On the other side of the scored tablet showing the scored lines, printing is performed using a printing pattern corresponding to the angle of the scored line, and for the scored tablet not showing the score on the other side, the second carrier Printing using a printing pattern corresponding to the angle of the scored line based on the angle, and tracing each scored tablet from the second carrier, turning the scored tablet inside out and reversing the left and right sides. In a state in which the score line is transferred to the third carrier, one surface of the scored tablet conveyed by the third carrier is imaged, and the angle of the score line of the scored tablet showing the score line is extracted. When each scored tablet was transferred from the second carrier to the third carrier, the angle of the scored line in the third carrier was compared with the angle of the scored line in the first carrier, and the third carrier was compared. If the angle of the secant line on the body is close to the angle of the secant line on the first transport body, printing is performed using the print pattern of that angle on the third transport body to determine the angle of the secant line on the first transport body. If there is a deviation more than the required angle, the extraction angle is corrected by considering it as an angle that is 180° inverted from that angle, and the print pattern corresponding to the corrected angle is used for one side of the scored tablet. And printing on a scored tablet in which the scored line does not appear on one surface, using a print pattern corresponding to the angle of the scored line on the second carrier. ..

According to the present invention, in addition to scored tablets having scored lines on both sides, it is possible to print by aligning print patterns on the front and back sides of tablets having scored lines on one side.
When printing on a single-sided scored tablet, by imaging one side (B side) of the scored tablet transported by the first transporter and extracting the angle of the scored line of the scored tablet showing the score, When printing the B side, angle information of the secant, which serves as a guideline for angle correction, is obtained.

Next, while tracking each scored tablet from the first carrier, it is turned over and transferred to the second carrier with the left and right sides reversed. In this description, the exposed side surface of all tablets transported by the second transporter will be referred to as surface A, and the exposed side surface transported by the third transporter will be described as surface B.

The angle of the dividing line when printing is performed on the A-side in the second conveying body by imaging the other side (A-side) of the one-sided dividing line tablet conveyed by the second conveying body and extracting the angle of the dividing line. Information is obtained. Based on the angle of the secant extracted by the second transporter, a print pattern corresponding to the angle is printed on the surface A of the secant tablet transported by the second transporter.

Further, for scored tablets in which the scored lines do not appear on the A-side, printing is performed using a print pattern corresponding to the angle of the scored lines extracted by the first transporter. Accordingly, the print pattern can be printed on the A-side so as to match the angle of the score line of the scored tablet.

While tracing each scored tablet from the second transporter, the scored tablets are turned over and transferred to the third transporter with the left and right sides reversed. By capturing the B-side of the scored tablet conveyed by the third carrier and extracting the angle of the score, angle information of the score when printing on the B-side in the third carrier can be obtained.

When the scored tablet is transferred from the second carrier to the third carrier, the angle of the scored line in the third carrier is compared with the angle of the scored line in the second carrier to compare the angle of the scored line in the third carrier. If the angle of the secant is in the vicinity of the angle of the secant on the second carrier, printing is performed using the print pattern for that angle on the third carrier.

In addition, if there is a deviation from the secant line angle in the second carrier that exceeds the required angle, the extraction angle is regarded as an angle obtained by reversing the extraction angle by 180°, and the corrected angle is corrected. , Print using the print pattern corresponding to the corrected angle.
In addition, for scored tablets in which scored lines do not appear on one surface (Side B), printing is performed using a print pattern corresponding to the angle of the scored lines on the second carrier.

In this way, when printing is performed on the third transport body, the angle of the extracted secant line is not set as the extraction angle without any verification as it is, and when the extraction angle largely deviates as described above, , The angle of the secant extracted in the first carrier is referred to and corrected. Therefore, the top and bottom of the print pattern can be prevented from being reversed on the front and back of the scored tablet, and the top and bottom can be aligned.

(3) The present invention can also be configured to include a step of instructing to exclude the scored tablet in a subsequent step when the deviation of the angle of the scored line falls within a required angle range.

In this case, the scored tablet rotates greatly during the transfer between the carriers, and for example, the tablet that is likely to be printed improperly because the printing pattern exceeds the prepared angle range is easily eliminated later. can do.

(4) The present invention can also be configured such that the print pattern has an angle range of 180°±the required angle as a set angle range in advance, and is set and accumulated for each required angle within the set angle range. ..

In this case, the angle range of 180°±the required angle is set as the set angle range in advance, and in the print pattern set for each required angle in the set angle range, it corresponds to the angle of the secant of the A surface or the B surface. Print using a print pattern. Accordingly, when printing the print pattern on the A side in the direction that matches the angle of the score line of the scored tablet, it is possible to perform a quick process.

(5) The present invention is configured such that the print pattern has a 180° angle range±a required angle as a set angle range and is created each time so as to correspond to an angle extracted in the angle range. You can also

In this case, compared to the case where the print patterns are created and stored in advance, a storage capacity that is not so large is required, and a storage unit having a small capacity can be used.

(6) In the present invention, in the extraction and printing of the score lines on the one surface and the other surface of the scored tablet, the angle system serving as a reference for one surface has an angular direction with respect to the angle system serving as a reference for the other surface. A configuration using an inverted angle system may be used.

In this case, since a dedicated print pattern can be used on each of the front and back surfaces of the scored tablet, the control can be performed more easily.

(7) In order to achieve the above object, the scored tablet printing apparatus of the present invention images a first carrier that carries scored tablets and one surface of the scored tablet that is transported by the first carrier. And a second carrier for transferring the scored tablets from the first carrier, the scored tablets being passed over from inside and out with the left and right sides reversed, and the second scorer. A second secant camera for imaging the other surface of the scored tablet conveyed by the carrier; a first printer for printing on the other surface of the scored tablet conveyed by the second carrier; A second carrier that conveys scored tablets from the second carrier in a state in which the scored tablets are turned over and the left and right sides are reversed, and one of the scored tablets that is transported by the third carrier Third secant camera for imaging the surface of the sheet, a second printer for printing on one surface of the secant tablet conveyed by the third carrier, and the third carrier for the third carrier. When the scored tablet is transferred to the body, the angle of the scored line on one side is extracted, and the extracted angle is compared with the angle of the scored line in the first carrier or the angle of the scored line in the second carrier. However, if the angle of the secant line on the third carrier is close to the angle of the secant line on the first carrier or the angle of the secant line on the second carrier, the print pattern of that angle is used on the third carrier. Then, if there is a deviation from the angle of the dividing line in the first carrier or the angle of the dividing line in the second carrier by more than the required angle, the extraction angle is regarded as an angle obtained by reversing the angle by 180°. After performing a correction, print on one surface of the scored tablet using a print pattern corresponding to the angle, and for a scored tablet with no score on one side, use the second carrier. Based on the angle of the secant in, printing is performed using a print pattern corresponding to that angle, and when the deviation from the angle of the secant extracted in the first carrier falls within the required angle range, the subsequent process And a control unit that controls to remove the scored tablet.

In the scored tablet printing apparatus of the present invention, scored tablets are conveyed by the first carrier. One surface (B surface) of the scored tablet being conveyed is imaged by the first scored camera, and the angle of the scored line is extracted. The scored tablets are transferred from the first carrier to the second carrier while being turned upside down and with the left and right sides reversed.

The other surface (A surface) of the scored tablet transported by the second transporter is imaged by the second scored camera, and the angle of the scored line is extracted. Based on the angle of the secant or the angle extracted by the first secant camera, the first printer prints a print pattern corresponding to the angle on the surface A of the secant tablet conveyed by the second conveyor. .. The scored tablets are transferred from the second carrier to the third carrier with the left and right sides reversed, and the scored tablets are conveyed.

The B-side of the scored tablet conveyed by the third carrier is imaged by the third scored camera. The angle of the secant on the third carrier is compared to the angle of the secant on the first carrier or the angle of the secant on the second carrier. If the angle of the secant line on the third transport body is close to the angle of the secant line on the first transport body or the angle of the secant line on the second transport body, the print pattern of that angle is used on the third transport body. And print by the second printer.

If the angle of the secant line of the first carrier or the angle of the secant line of the second carrier deviates by more than a required angle, the extraction angle is regarded as an angle obtained by reversing the angle by 180°. The print pattern corresponding to the angle is printed on one surface (B surface) of the scored tablet that has been corrected and carried by the third carrier.

Thereby, the top and bottom of the print pattern printed on both sides of the double-sided scored tablet can be aligned. According to the scored tablet printing apparatus of the present invention, the top and bottom of the print pattern printed on both sides of the one-sided scored tablet can be aligned as described in the above-mentioned (2) Method for printing scored tablets.

The present invention provides a method for printing a scored tablet and a scored tablet printing device that can control the printing patterns on the front and back surfaces of the scored tablet so that the top and bottom of each print are aligned. Can be provided.

It is a schematic explanatory drawing which shows one Embodiment of the secant tablet printing apparatus which concerns on this invention. It is a block diagram which shows the structure of the control system of the secant tablet printing apparatus shown in FIG. It is a flowchart which shows the algorithm which determines whether the extraction angle of a secant is regarded as the angle which inverted 180 degrees from the angle. When printing with aligning both sides of a double-sided scored tablet, the angle of the scored line is not 180° different from the ideal when passing the scored tablet, but an explanation showing the flow of imaging and printing when it is normally extracted. It is a figure. When printing is done with the top and bottom aligned on both sides of a double-sided scored tablet, when the score of the scored line is transferred from the A-conveying drum to the B-conveying drum, even if the angle of the dividing line is the same, it is extracted as an angle different from the ideal 180°. It is explanatory drawing which shows the flow of imaging and printing. Single-sided scored line When printing on both sides of a tablet with the top and bottom aligned, a scored line appears on the B side when transported by the B ₀ transport drum, and a scored line is delivered when the single-sided scored tablet is transferred from the A transport drum to the B transport drum. FIG. 8 is an explanatory diagram showing a flow of image capturing and printing when an angle is extracted as an angle different from the ideal by 180° even if the angle is the same. FIG. 9 is an explanatory diagram showing a flow of imaging and printing of a single-sided scored tablet in which a scored line does not appear on the B side when transported by the B ₀ transport drum when printing is performed by aligning both sides of the single-sided scored tablet. FIG. 5A is an explanatory view of an A-plane angle system showing an angle with respect to the transport direction, and FIG. 6B is an explanatory view of a B-plane angle system showing an angle with respect to the transport direction. .. FIG. 8 is an explanatory diagram in a case where printing is performed by sandwiching a score line of a conventional scored tablet, in which the top and bottom sides of the print are not aligned on the front and back surfaces and are reversed.

Embodiments of the present invention will be described in more detail with reference to FIGS. 1 to 8.
As shown in FIG. 1, the scored tablet printing apparatus P includes, in order from the upstream side of the scored tablet transport direction, a B ₀ transport drum 1 as a first transporter, an A transport drum 2 as a second transporter, and a second transporter. It is provided with a B conveying drum 3 which is a third conveying body and a sorting conveying drum 4 which is a fourth conveying body.

B ₀ further upstream side of the conveyance drum 1 includes a supply drum 9 to be sent to B ₀ transport drum 1 secant tablets, and a chute 90 for supplying scored tablets supply drum 9.
Each of the above-mentioned conveying drums is provided with a large number of holes (not shown) for adsorbing tablets on the outer peripheral surface thereof. By carrying out the delivery, the scored tablet can be transported to the subsequent process.

When transferring scored tablets among the respective transport drums 1, 2, 3 and 4, the left and right sides of the scored tablet are mirror-inverted (in the image pickup direction of the camera and the printing direction of the printer) and transferred to the rear transport drum. When pressed, the scored tablets are turned inside out (the surface opposite to the front side transport drum is exposed).

In the vicinity of the B ₀ transport drum 1, the first B ₀ plane secant camera 10 is a secant camera for imaging the surface B of the secant tablet carried by B ₀ transport drum 1 is disposed. In the vicinity of the A-conveying drum 2, an A-plane secant camera 20, which is a second secant camera that images the A-plane of the secant tablets conveyed by the A-conveying drum 2 from the upstream side, is the first printer. An A-side printer 21 and an A-side inspection camera 22 which is a first inspection camera for imaging the A-side of each scored tablet after printing are arranged.

Further, in the vicinity of the B-conveying drum 3, there are a B-plane secant camera 30, which is a third secant camera for capturing images of the B-side of the secant tablets conveyed by the B-conveying drum 3 from the upstream side, and a second printer. A B-side printer 31 and a B-side inspection camera 32, which is a second inspection camera for imaging the B-side of each scored tablet after printing, are arranged. Then, in a subsequent step of the sorting/conveying drum 4 which is a sorting section for rejecting defective products by judging the quality of scored tablets, a collecting unit 40 for collecting the rejected defective products and a conveyor 41 for sending non-defective products to the subsequent process are arranged. Has been done.

The secant cameras 10, 20, 30 described above are line sensor cameras, and the inspection cameras 22, 32 are area cameras. The term “imaging” is not limited to the meaning of capturing an image with a camera or the like, but refers to any means for obtaining two-dimensional information for extracting angle information of secant. As a means for photographing, for example, a CCD camera such as a line sensor camera or an area camera, or a method of determining an angle by a plurality of laser distance measuring sensors or a probe can be used.

The sorting unit such as the sorting and transporting drum 4 does not necessarily have to be provided at this position. For example, the sorting and transporting drum 4 is not provided and the transporting drum 3 has a structure similar to that of the sorting and transporting drum 4. Is also possible.

An outline of the control system of the scored tablet printing apparatus P will be described with reference to FIG.
The control unit C controls the entire control system, and exchanges various information including the angle information of the secant with the B ₀ determination unit 13, the A determination unit 23, and the B determination unit 33. Further, the B ₀ judging section 13, the A judging section 23, and the B judging section 33 respectively include the B ₀ section secant camera 10, the A section secant camera 20, the A inspection camera 22, the B section secant camera 30, and the B section, respectively. Image information captured by the inspection camera 32 is sent. The controller C also controls a motor (not shown) that rotates the B ₀ transport drum 1, the A transport drum 2, the B transport drum 3, and the sorting transport drum 4 in synchronization.

Further, the control unit C stores print patterns (see FIG. 8) of the A-plane angle system and the B-plane angle system in advance. In the print pattern, the angle range of the secant angle is set in the range of ±30° in addition to the angle range of 180° from 0° to 179°. That is, as shown in FIG. 8, within the set angle range of −30° to 209°, print patterns corresponding to the respective angles are set for each 1°. It should be noted that the angle of ± exceeding the angle range of 180° is not limited to 30° and can be set appropriately.

Further, the print pattern is not limited to every 1°, and the step angle can be appropriately set, for example, every 0.5°. As described above, the scored tablets are turned inside out due to the transfer between the transport drums, and the left and right sides of the scored tablets are mirror-image-reversed with 0° as the central axis. It has an angle system and a printed pattern.

Further, B in the determination unit 33, when it moves the respective dividing line tablet from A transport drum 2 to B transport drum 3, extracted secant of angle B ₀ B ₀ plane secant in the transport drum 1 in B transport drum 3 The angle is compared with the angle of the secant of the B surface extracted by the camera 10. Alternatively, the angle of the secant extracted on the B transport drum 3 is compared with the angle of the secant of the A plane extracted by the A secant camera 20 on the A transport drum 2.

Then, (a) the angle of the secant of the B surface of the secant tablet extracted on the B conveying drum 3 is close to the angle of the secant extracted by the B ₀ surface secant camera 10 or the angle of the secant of the A surface extracted on the A conveying drum 2. If so, a command is issued to the B-side printing unit (31) including the B-side printer 31 so that the B-conveying drum 3 prints using the print pattern at that angle (the angle of the secant of the B-side).

On the other hand, (b) if the angle of the secant extracted by the B ₀ surface secant camera 10 or the angle of the secant of the A surface extracted by the A transport drum 2 deviates from the required angle, the extracted angle (of the B surface) The B-side printing unit (31) is instructed to consider the angle (the angle of the secant) as an angle obtained by reversing the angle by 180°, and to perform printing by using the print pattern of the corrected angle. The threshold value of the deviation is not particularly limited, but is set to 170°, for example.

Further, the print pattern used in the present embodiment, as shown in FIG. 8, has an angle range of 180° ±30° as a set angle range in advance, and is set and stored every 1° in the set angle range. It has been done. However, the print pattern to be used is, for example, an angle range of 180°±the required angle is set as the set angle range, and is created by a predetermined algorithm each time so as to correspond to the angle extracted in the angle range. Good.

(Action)
The scored tablet printing apparatus P described above can print a print pattern on the front and back surfaces of a double-sided scored tablet or a single-sided scored tablet according to the angle of the score and align the top and bottom of the print on the front and back surfaces of the scored tablet. The operation of the scored tablet printing apparatus P will be described below.

First, with reference to FIGS. 1 to 3, a flow for printing on both sides of a double-sided scored tablet and aligning the top and bottom of the print pattern will be described.

(Area B ₀ )
(1) The double-sided scored tablet supplied from the chute 90 is adsorbed and conveyed by each hole of the supply drum 9.
(2) Double-sided scored tablets are transferred from the supply drum 9 to the B ₀ transport drum 1. The double-sided scored tablet 7 is turned upside down, and the left and right sides of the scored tablet as seen from the respective scored cameras are mirror-inverted and delivered. When delivered, the double-sided scored tablet may rotate in the circumferential direction and the angle of the scored line may shift slightly.
(3) The B-side on the exposed side of the double-sided scored tablet being conveyed by the B ₀ -conveying drum 1 is imaged by an image-capturing unit (for example, a unit of 5 units arranged in the horizontal direction) by the B ₀ -plane secant camera 10, _{The 0-} side judging section 13 extracts the angle of the secant on the B-side of each double-sided scored tablet (the angle of the B-side angle system) in the B ₀ judging section 13.

(Area A)
(4) Double-sided scored tablets are transferred from the B ₀ transport drum 1 to the A transport drum 2. The double-sided scored tablet is turned upside down, and the left and right sides of the double-sided scored tablet are mirror-inverted and delivered when viewed from each scored camera. When delivered, the double-sided scored tablet may rotate in the circumferential direction and the angle of the scored line may shift slightly.
(5) The exposed side A of the double-sided scored tablet being conveyed by the A-conveyance drum 2 is imaged by the A-side scored camera 20 in image-capturing units, and the A-determination unit 23 determines the scored line on the side A of each double-sided scored tablet. Angle (angle of A-plane angle system) is extracted.

(6) A command is sent from the control unit C to the A-side printing unit (21) including the A-side printer 21 based on the angle of the secant extracted by the A-side secant camera 20, and the double-sided secant tablet on the exposed side of the imaging unit is exposed. The A-side printer 21 uses the printing pattern of the A-side angle system corresponding to the angle of the secant on the A-side, and prints according to the angle of the secant.
(7) The A-side inspection camera 22 captures an image of the A-side after printing of the double-sided scored tablet of the image capturing unit, sends the image data to the A determining unit 33, and the A determining unit 33 determines whether the A-side printing is good or not. , And sends the result to the control unit C.

(Area B)
(8) Double-sided scored tablets are transferred from the A transport drum 2 to the B transport drum 3. The double-sided scored tablet is turned upside down, and the left and right sides of the double-sided scored tablet seen from the B-side scored camera 30 are mirror-inverted and transferred. When delivered, the double-sided scored tablet may rotate in the circumferential direction and the angle of the scored line may shift slightly.
(9) The B side on the exposed side of the double-sided scored tablet of the imaging unit being conveyed by the B-conveyance drum 3 is imaged by the B-side scored camera 30, and the B determination unit 33 determines the B-sided score of each double-sided scored tablet. Angle (the angle of the B-side angle system) is extracted.

(10) The angle of the secant extracted by the B-face secant camera 30 is compared with the angle of the secant of the A-face of each double-sided secant tablet extracted by the A-face secant camera 20. If the angle of the secant of the B surface of the double-sided secant tablet extracted by the B-secant camera 30 is near the angle of the secant extracted by the A-secant camera 20, it is extracted by the B-secant camera 30. Printing is performed using the printing pattern of the B-side angle system corresponding to the angle.

If the angle of the secant of the B surface of the double-sided secant tablet extracted by the B-secant camera 30 deviates from the angle of the secant extracted by the A-secant camera 20 by more than the required angle, the secant extraction is performed. The angle is regarded as an angle obtained by reversing the angle by 180°, and is corrected, and a printing pattern of the B-side angle system corresponding to the corrected angle is used for one side of the double-sided scored tablet of the imaging unit. Print. Thereby, the top and bottom of the print pattern printed on both sides of the double-sided scored tablet can be aligned.

At this time, when the double-sided scored tablet is largely rotated during the transfer between the transport drums 2 and 3, and the deviation of the angle of the scored line is within the required angle range, for example, an angle range in which a print pattern is prepared (this embodiment In the case of (3), when the angle exceeds (-30° to 209°) (disengages), the B determination unit 33 issues a command to exclude in the subsequent process. As a result, during transfer between the transporting bodies, the scored tablet is largely rotated, and for example, a tablet that is likely to be improperly printed because the printing pattern exceeds the prepared angle range is easily eliminated later. be able to.

As described above, the angle range for setting the print pattern is set to be the angle range of 180°±30°, and the print pattern is set for each required angle in the set angle range. Even when the tablets move between transporters or when they are delivered, even if the angle of the secant lines is slightly shifted due to rotation, it is possible to respond flexibly as long as the set angle range of the print pattern is wide. This makes it possible to more reliably align the top and bottom sides of the front and back surfaces when printing the print pattern on both the front and back surfaces of the scored tablet.

(11) The B-side inspection camera 32 captures an image of the B-side after printing the scored tablets in the image capturing unit, sends the image data to the B determination unit 33, and the B determination unit 33 determines whether the B-side printing is good or not. The result is sent to the control unit C.
(12) Based on the quality judgment, reject products are rejected to the collection unit 40, and only non-defective products are sent to the subsequent process by the conveyor 41.

In addition, the top and bottom of the printing pattern of the scored tablet may be aligned, and the top and bottom may be reversed. When printing different information (various codes, etc.) on the A side and the B side with a score line, if you turn the print upside down on the front and back of the scored tablet, when you divide it by the score line, which segment will be cut? However, there is an advantage that different information, that is, all information is displayed on the front and back.

When the printed patterns on the front and back sides of the scored tablet are intentionally reversed, there is a method of preparing the printed patterns of the reversed A and B sides from outside the system, for example. As another method, print patterns of the same design are prepared for the A side and the B side, and when each print pattern is created, the B side is created by reversing (rotating) 180°. There is a way.

The algorithm for determining whether or not the extraction angle of the secant in the above is regarded as an angle obtained by inverting the extraction angle by 180° is as follows.

Please refer to FIG.
(Step S1)
It is determined whether the angle of the secant extracted on the B transport drum 3 is less than 90°. If it is less than 90°, the process proceeds to step S2, and if it is 90° or more, the process proceeds to step S4.

(Step S2)
It is determined whether the angle extracted in the previous step (A transport drum 2 in this case) is 90° or more. If it is 90° or more, the process proceeds to step S3, and if it is less than 90°, the process proceeds to step S6.

(Step S3)
The original angle is corrected to be 180 degrees or more (the angle extracted by the B transport drum 3 is added to 180°), and the process proceeds to step S6.

(Step S4)
If the angle extracted by the A transport drum 2 is less than 90°, the process proceeds to step S5, and if it is 90° or more, the process proceeds to step S6.

(Step S5)
The original angle is corrected to be 0° or less (180° is subtracted from the angle extracted in the B conveying drum 3 and the result is a negative number), and the process proceeds to step S6.

(Step S6)
The angle of the secant is output based on the results of the route from step S3 and the route from step S5.

[Reference Example 1]
Please refer to FIG.
The case shown in FIG. 4 is a case where when printing is performed by aligning both sides of a double-sided scored tablet with the top and bottom aligned, the score of the scored line is not 180° different from the ideal angle when the scored tablet is delivered, but is extracted normally.
In the following description, for the sake of convenience, the description will be given with one scored tablet including the following cases, and the imaging process by the A-side inspection camera 22 and the B-side inspection camera 32 is omitted. Regarding the angle of the secant, the angle shown in each of FIGS. 8(a) and 8(b) with respect to the transport direction is set to 0° as a reference for convenience of description, but the reference is not particularly limited and can be set as appropriate. Is.

(1) The B ₀ surface secant camera 10 takes an image of the B surface of the double-sided secant tablets 7 in imaging units (for example, five pieces arranged in the lateral direction), and the B-plane angle of the secant 70 of the arbitrary double-sided secant tablet 7 The angle (5°) of the system (see FIG. 8(b)) was extracted. Note that this angle data is not used in this case.
(2) The double-sided scored tablet 7 is transferred from the B ₀ transport drum 1 to the A transport drum 2, and the A side is exposed. The A-side secant camera 20 captures an image of the A-side of the double-sided secant tablet 7, and the angle (5°) of the A-plane angle system (see FIG. 8A) of the secant 70 of the double-sided secant tablet 7 which is being tracked. Was extracted.

(3) The A-side printer 21 prints a print pattern (ABC/123) of the A-side angle system corresponding to the angle (5°) of the dividing line on the A-side of the double-sided scored tablet 7.
(4) The double-sided scored tablet 7 is transferred from the A transport drum 2 to the B transport drum 3, and the B side is exposed. The B-side secant camera 30 images the B-side of the double-sided secant tablet 7, and the angle (5°) of the B-side angle system of the secant 70 of the double-sided secant tablet 7 being traced is extracted.

(5) The angle (5°) of the secant of the B surface extracted by the B secant camera 30 is compared with the angle (5°) of the secant of the A surface extracted by the A secant camera 20. Since both angles are the same, the printing pattern (ABC/123) corresponding to the angle (5°) of the B-line angle system of the dividing line 70 is printed on the B-side of the double-sided scored tablet 7. As a result, the top and bottom of the print patterns (ABC/123) on the A side and the B side are aligned.

[Example 1]
Please refer to FIG.
In the case shown in FIG. 5, when printing is performed with the top and bottom aligned on both sides of a double-sided scored tablet, even when the scored line angle is the same when transferring the scored tablet from the A transport drum 2 to the B transport drum 3, an ideal angle of 180° is achieved. This is the case when extracted as different angles.

(1) The B ₀ surface secant camera 10 takes an image of the B surface of the double-sided secant tablets 7 in imaging units (for example, five pieces arranged in the lateral direction), and the B-plane angle of the secant 70 of the arbitrary double-sided secant tablet 7 The system angle (5°) was extracted. Note that this angle data is not used in this case.
(2) The double-sided scored tablet 7 is transferred from the B ₀ transport drum 1 to the A side transport drum 1, and the A side is exposed. The A-plane secant camera 20 images the A-plane of the double-side secant tablet 7, and the angle (5°) of the A-axis angle system of the secant 70 of the double-side secant tablet 7 being traced is extracted.

(3) The A-side printer 21 prints a print pattern (ABC/123) of the A-side angle system corresponding to the angle (5°) of the dividing line on the A-side of the double-sided scored tablet 7.
(4) The double-sided scored tablet 7 is transferred from the A-side conveying drum 2 to the B-side conveying drum 3, and at this time, the B side is exposed because the tablet is slightly rotated. The B-side secant camera 30 images the B-side of the double-sided secant tablet 7, and the angle (178°) of the B-side angle system of the secant 70 of the double-sided secant tablet 7 being traced is extracted.

(5) The angle of the secant of the B surface extracted by the B secant camera 30 (178°) is compared with the angle of the secant of the A surface extracted by the A secant camera 20 (5°). Since both angles are largely deviated by nearly 180°, the angle is regarded as an angle (−2°) which is 180° inverted from the angle (178°) of the secant of the B surface and is corrected. Then, the print pattern (ABC/123) of the B-side angle system corresponding to the corrected angle (−2°) of the secant is printed on the B-side of the double-sided scored tablet 7. As a result, the top and bottom of the print patterns (ABC/123) on the A side and the B side are aligned.

Next, with reference to FIG. 1 to FIG. 3, a flow for printing on both surfaces of a single-sided scored tablet and aligning the top and bottom of the print pattern will be described.

(Area B ₀ )
(1) The single-sided scored tablet supplied from the chute 90 is adsorbed and conveyed by each hole of the supply drum 9.
(2) Single-sided scored tablets are transferred from the supply drum 9 to the B ₀ transport drum 1. The single-sided scored tablet 8 is turned upside down, and the left and right sides of the single-sided scored tablet 8 are mirror-inverted and transferred when viewed from the respective scored cameras. When delivered, the single-sided scored tablet may rotate in the circumferential direction and the angle of the scored line may shift slightly. In each of the single-sided scored tablets, those with a scored line on the exposed side B and those without a scored line are randomly mixed.
(3) A single-sided scored tablet in which the B-side on the exposed side of the single-sided scored tablet being conveyed by the B ₀ -conveying drum 1 is imaged by the B ₀ -plane scored camera 10 in image-capturing units and a scored line appears on the B-side. The data of the one-sided scored tablet that does not appear is acquired, and for those with a scored line, the angle of the scored line (the angle of the B-side angle system) is extracted by the B ₀ determination unit 13.

(Area A)
(4) Scored tablets are transferred from the B ₀ transport drum 1 to the A transport drum 2. The one-sided scored tablet is turned upside down, and the left and right sides of the double-sided scored tablet are mirror-inverted and delivered when viewed from each scored camera. When delivered, the scored tablets may rotate in the circumferential direction and the angle of the scored lines may shift slightly.
(5) The A-side on the exposed side of the single-sided scored tablet being conveyed by the A-conveyance drum 2 is imaged by the A-side scored camera 20 in image-capturing units, and the scored tablet does not appear as the scored tablet with the score on the A-side. The data of the scored tablet is obtained, and if the scored line is present, the A determination unit 23 extracts the angle of the scored line (angle of the A plane angle system).

(6) A command is sent from the control unit C to the A-side printing unit (21) including the A-side printer 21 based on the angle of the secant extracted by the A-side secant camera 20, and the secant tablet on the exposed side of the imaging unit is displayed. A scored tablet having a scored line on the A-side is printed by the A-side printer 21 using the print pattern of the A-side angle system corresponding to the angle of the scored line according to the angle of the scored line. Further, based on the angle of the secant of the B surface extracted by the B ₀ surface secant camera 10, the print pattern of the A surface angle system corresponding to the angle is printed on the A surface of the secant tablet in which the secant is not displayed.
(7) The A-side inspection camera 22 captures the image of the A-side after printing the double-sided scored tablets in the image capturing unit, sends the image data to the A-determination unit 33, and the A-determination unit 33 determines whether the A-side printing is good or bad. , And sends the result to the control unit 5.

(Area B)
(8) Scored tablets are transferred from the A transport drum 2 to the B transport drum 3. The single-sided scored tablet is turned upside down, and the left and right sides of the single-sided scored tablet as viewed from the B-side scored camera 30 are mirror-inverted and transferred. When delivered, the scored tablets may rotate in the circumferential direction and the angle of the scored lines may shift slightly.
(9) A single-sided scored tablet which is conveyed by the B-conveyance drum 3 is imaged on the exposed side B of the single-sided scored tablet by the B-sided score camera 30 and is shown as a single-sided scored tablet in which the scored line appears on the B-side. The data of the undivided score tablet is acquired, and when the score is shown, the angle of the score (the angle of the B plane angle system) is extracted by the B determination unit 33.

(10) The angle of the secant line extracted by the B-plane secant camera 30 is compared with the angle of the secant line of the B ₀ plane side of each single-sided secant tablet extracted by the B ₀ secant camera 10. Then, if the extraction angle of the B-side secant of each single-sided secant tablet extracted by the B-secant camera 30 is near the angle of the secant extracted by the B ₀ -secant camera 10, it is determined by the B-secant camera 30. Printing is performed on the B side using the print pattern of the B side angle system of the extracted angles.

Further, if the angle of the secant on the B side of each single-sided secant tablet obtained by the B secant camera 30 deviates from the angle of the secant obtained by the B ₀ secant camera 10 by more than the required angle, The angle of the secant of the B-side is regarded as an angle obtained by reversing the angle by 180°, and is corrected, and the B-side angle system corresponding to the corrected angle is printed on the B-side of the single-sided secant tablet of the imaging unit. Print using pattern to match secant angle.

In addition, for a single-sided scored tablet in which a scored line does not appear on the B-side of the scored tablet, based on the angle of the scored line on the A-side extracted by the A-side scored camera 20, the B-side angle system corresponding to that angle is set on the B-side. Print a print pattern. As a result, the top and bottom of the printing pattern printed on both sides of the single-sided scored tablet can be aligned.

(11) The B-side inspection camera 32 captures an image of the B-side after printing the scored tablets in the image capturing unit, sends the image data to the B determination unit 33, and the B determination unit 33 determines whether the B-side printing is good or not. The result is sent to the control unit C.
(12) Based on the quality judgment, rejected products are rejected to the collection unit 40, and only non-defective products are sent to the subsequent process by the conveyor 41.

[Example 2]
In the case shown in FIG. 6, when printing is performed with the top and bottom aligned on both sides of a single-sided scored tablet, a score line appears on the exposed side when transported by the B ₀ transport drum 1, and the A transport drum 2 moves to the B transport drum. This is a case where even if the secant angle is the same, when the secant tablet is delivered, it is extracted as an angle different from the ideal 180°.

(1) When the first transport drum 1 is transported, the B ₀ surface secant camera 10 captures an image of the B surface of the single-side secant tablet 8 in the imaging unit, and the B surface angle system (see FIG. 8B). The angle (178°) of the secant 80 of any one-sided secant tablet 8 is extracted by the definition of.
(2) The single-sided scored tablet 8 is transferred to the second conveying drum 2 and the side A is exposed. The A-plane secant camera 20 images the A-plane of the single-side secant tablet 8. Since the dividing line does not appear on the surface A of the traced single-sided dividing line tablet 8, the angle of the dividing line is not extracted.

(3) The printing pattern (ABC) corresponding to the angle (178°) of the secant of the B-plane angle system of the B-plane extracted by the B _0- plane secant camera 10 on the A-plane of the single-side secant tablet 8 by the A-plane printer 21. /123) is printed.
(4) The single-sided scored tablet 8 moves to the third transport drum 3 and the B-side is exposed. The B-side secant camera 30 captures an image of the B-side of the single-side secant tablet 8. As a result, the angle (2°) of the secant 80 of the B plane angle system of the B plane of the single-sided secant tablet 8 being traced was extracted.

(5) The angle of the secant of the B surface extracted by the B secant camera 30 (2°) and the angle of the secant of the B surface extracted by the B ₀ secant camera 10 (178°) are compared. Since both angles are largely deviated by about 180°, the angle of the secant of the B surface is regarded as an angle (182°) that is 180° inverted from the extracted angle (2°) and is corrected. Then, the print pattern (ABC/123) of the B-side angle system corresponding to the corrected angle (182°) is printed on the B-side of the single-sided scored tablet 8. As a result, the top and bottom of the print patterns (ABC/123) on the A side and the B side are aligned.

[Reference Example 2]
The case shown in FIG. 7 is a case where, when printing is performed by aligning both sides of a single-sided scored tablet with the top and bottom aligned, the scored lines not conveyed on the exposed side of the scored tablet conveyed by the B ₀ conveying drum 1. In such a case, it is possible to perform printing with uniform top and bottom without using the printing method of the present invention.

(1) The B ₀ surface secant camera 10 captures an image of the B surface of the single-side secant tablet 8 in the image capturing unit, but the secant does not appear on the B surface.
(2) The single-sided scored tablet 8 moves from the first transport drum 1 to the second transport drum 2 and the side A is exposed. The A-side secant camera 20 images the A-side of the one-side secant tablet 8, and the angle (179°) of the secant 80 of the arbitrary one-side secant tablet 8 being traced is extracted.

(3) By the A-side printer 21, the printing pattern (ABC/A-side) of the A-side angle system corresponding to the angle (179°) of the secant of the A-side extracted by the A-side secant camera 20 on the A-side of the single-sided secant tablet 8 123) is printed.
(4) The single-sided scored tablet 8 moves from the second transport drum 2 to the third transport drum 3, and the B-side is exposed. The B-side secant camera 30 captures an image of the B-side of the single-sided secant tablet 8, but no secant appears on the B-side.

(5) The B-side printer 31 uses the B-side angle system print pattern (ABC/A/C) corresponding to the angle (179°) of the A-side secant extracted by the A-side secant camera 20 on the B-side of the single-side secant tablet 8. 123) is printed. As a result, the top and bottom of the print patterns (ABC/123) on the A side and the B side are aligned.

The terms and expressions used in the specification and claims are merely for the purpose of description, and are not limiting in any way, and the characteristics and the features described in the specification and the claims are not limited. There is no intention to exclude terms or expressions equivalent to some. Needless to say, various modifications are possible within the scope of the technical idea of the present invention.

P secant tablet printing device 9 supply drum 9
90 Chute 1 B ₀ Conveying Drum 10 B ₀ Face Separation Line Camera 2 A Conveying Drum 20 A Face Separation Line Camera 21 A Side Printer 22 A Side Inspection Camera 3 B Conveying Drum 30 B Face Separation Camera 31 B Side Printer 32 B Side Inspection Camera 4 Sorting/conveying drum 40 Collection unit 41 Conveyor C control unit 13 B ₀ determination unit 23 A determination unit 33 B determination unit (21) A-side printing unit (31) B-side printing unit 7 double-sided scored tablet 70 scored line 8 single-sided scored tablet 80 scored line

Claims (6)

It is composed of an A-plane angle system and a B-plane angle system, and the A-plane angle system and the B-plane angle system are obtained by reversing the angular directions of the patterns, and the vertical directions of the patterns are opposite at the same angle. Using print pattern,
An image of the A-side on the exposed side of the scored tablet conveyed by the previous carrier is imaged . If a score is shown on the A-side, the angle of the score in the A-side angle system is extracted and , Printing using the pattern of the A-side angle system corresponding to the extraction angle of the secant of the A-side ,
From the front carrier to the latter carrier with the scored tablets of the A surface imaged inside out and mirror-inverted with the center line parallel to the direction of the scored tablets viewed in the imaging direction as the central axis . A step of migrating, and imaging the surface B on the exposed side, which is the surface opposite to the surface A of the scored tablet conveyed by the subsequent carrier.
When a secant is present on the B-side, the angle of the secant in the B-side angle system is extracted, and the extraction angle of the secant of the B-side in the subsequent carrier is less than 90° and the secant of the A-side. or the angle of extraction is less than 90 °, or the secant of the extraction angle B surface more than 90 °, and if the dividing line of the extraction angle of the a surface more than 90 °, in the transport body after the, same to B side, the printed using the pattern of the B-side angle system, less than 90 ° secant extraction angle of the B plane, and the dividing line of the a side which corresponds to the secant of the extraction angle of the B plane If the extraction angle is 90° or more, or if the extraction angle of the secant of the B surface is 90° or more and the extraction angle of the secant of the A surface is less than 90°, the extraction angle of the secant of the B surface is 180°. performs inverted allowed angle regarded be corrected, with respect to the B side, the step of printing using the pattern of the B-side angle system corresponding to the corrected angle,
If no secant appears on the B-side , printing on the B-side using a pattern of the B-side angle system corresponding to the extraction angle of the secant on the A-side, printing the secant tablet Method. It is composed of an A-plane angle system and a B-plane angle system, and the A-plane angle system and the B-plane angle system are obtained by reversing the angular directions of the patterns, and the vertical directions of the patterns are opposite at the same angle. Using print pattern,
An image of the B-side on the exposed side of the scored tablet conveyed by the first carrier, and in the case where a score is present on the B-side, a step of extracting the angle of the score in the B-side angle system ;
The second transport from the first transporter in a state in which the scored tablet of which the surface B has been imaged is turned upside down and mirror-inverted with the center line parallel to the transport direction of the scored tablet as the central axis when viewed in the imaging direction. is shifted to the body, a step of imaging the surface a of the opposite surface to become exposed side of the B-side of the dividing line tablet carried by the second carrier,
When the secant appears on the A plane, the angle of the secant in the A plane angle system is extracted, and the pattern of the A plane angle system corresponding to the extraction angle of the secant of the A plane is extracted with respect to the A plane. The process of using and printing,
If the secant does not appear on the A side, printing using the pattern of the A side angle system corresponding to the extraction angle of the secant of the B side ,
From the second transporter, the third transport is performed with the scored tablet obtained by imaging the surface A being turned upside down and mirror-inverted with the center line parallel to the transport direction of the scored tablet viewed in the imaging direction as the central axis. Transferring to the body, and imaging the surface B on the exposed side of the scored tablet conveyed by the third conveyor,
In the third carrier, when a secant appears on the B surface, an angle of the secant in the B surface angle system is extracted, and an extraction angle of the secant of the B surface is less than 90° and the A surface. If the extraction angle of the secant line is less than 90°, or if the extraction angle of the secant of the B-side is 90° or more and the extraction angle of the secant of the A-side is 90° or more , the third carrier In the same B plane , printing is performed using the pattern of the B plane angle system corresponding to the extraction angle of the secant of the B plane, and the extraction angle of the secant of the B plane is less than 90° and the A plane. If the extraction angle of the secant is 90° or more, or if the extraction angle of the secant of the B surface is 90° or more and the extraction angle of the secant of the A surface is less than 90°, the extraction angle of the secant of the B surface was subjected to 180 ° inverted allowed angle regarded be corrected, with respect to the B side, the step of printing using the pattern of the B-side angle system corresponding to the corrected angle,
In the third carrier, when the dividing line does not appear on the B side , printing is performed on the B side using the pattern of the B side angle system corresponding to the extraction angle of the dividing line of the A side. A method for printing scored tablets, comprising: The A-side angle system and the B-side angle system of the print pattern have an angle range of 180°±the required angle as a set angle range, and the respective patterns are set in the same set angle range for each required angle. The method for printing scored tablets according to claim 1 or 2. A transport body before transporting scored tablets,
An A-plane secant camera that images the A-plane of the secant tablet that is conveyed by the preceding conveyor.
An A-side printer that prints on the A-side of the scored tablet that is conveyed by the preceding conveyor,
A carrier after the scored tablets are delivered from the previous carrier and convey the scored tablets,
A B-side secant camera for imaging the B-side of the secant tablet conveyed by the latter carrier.
A B-side printer that prints on the B-side of scored tablets conveyed by the latter carrier
When a score line appears on the A surface of the score tablet, an A determination unit that extracts the angle of the score line in the A angle system from the image captured by the A surface camera.
When a score line appears on the B-plane of the scored tablet, a B determination unit that extracts the angle of the score line in the B-plane angle system from the image captured by the B-plane score camera.
It is composed of an A-plane angle system and a B-plane angle system, and the A-plane angle system and the B-plane angle system are obtained by reversing the angular directions of the patterns, and the vertical directions of the patterns are opposite at the same angle. Using print pattern,
The A side on the exposed side of the scored tablet conveyed by the preceding carrier is imaged by the A side secant camera, and when a secant appears on the A side, the A judging unit determines the A side. Printing on the A-side printer using the pattern of the A-side angle system corresponding to the extraction angle of the extracted secant of the A-side,
From the previous carrier, the scored tablet of which the surface A has been imaged is turned upside down and the mirrored image is inverted about the center line parallel to the direction of transfer of the scored tablet as seen in the imaging direction. Then, the B side on the exposed side, which is the opposite side of the A side of the scored tablet conveyed by the conveying body after that, is imaged by the B side secant camera,
If a secant appears on the B side, the extraction angle of the secant of the B side extracted by the B determination unit is less than 90°, and the extraction angle of the secant of the A side is less than 90°, or When the extraction angle of the secant of the B surface is 90° or more and the extraction angle of the secant of the A surface is 90° or more, the B surface corresponding to the extraction angle of the secant of the B surface with respect to the B surface. Printing with the B-side printer using an angle system pattern, the extraction line of the secant of the B-side is less than 90°, and the extraction angle of the secant of the A-side is 90° or more, or the secant of the B-side. If the extraction angle of B is 90° or more and the extraction angle of the secant of the A surface is less than 90°, the extraction angle of the secant of the B surface is corrected by 180° and the correction is performed. Printing on the same side printer using the same side B angle system pattern corresponding to the corrected angle,
If no secant appears on the B side, control is performed to print on the B side using the same B side angle system pattern corresponding to the extraction angle of the secant of the A side on the B side. With a control unit
Scored tablet printing device. A first carrier for carrying scored tablets;
A B0 surface secant camera for imaging the B surface of the secant tablet conveyed by the first conveyor,
A second carrier that carries the scored tablets from the first carrier and transports the scored tablets;
An A-plane secant camera for imaging the A-plane of the secant tablet conveyed by the second conveyor,
An A-side printer that prints on the A-side of scored tablets conveyed by the second conveyor,
A third carrier that delivers the scored tablets from the second carrier and conveys the scored tablets;
A B-side secant camera for imaging the B-side of the secant tablet conveyed by the third conveyor,
A B-side printer that prints on the B-side of scored tablets conveyed by the third conveying body;
In the first carrier, when a score line appears on the B surface of the scored tablet, a B0 determination unit that extracts the angle of the score line in the B surface angle system from the image captured by the B0 surface score camera,
When a score line appears on the A surface of the score tablet, an A determination unit that extracts the angle of the score line in the A angle system from the image captured by the A surface camera.
In the third carrier, when a score line appears on the B-plane of the scored tablet, a B determination unit that extracts the angle of the scored line in the B-plane angle system from the image captured by the B-plane score camera.
It is composed of an A-plane angle system and a B-plane angle system, and the A-plane angle system and the B-plane angle system are obtained by reversing the angular directions of the patterns, and the vertical directions of the patterns are opposite at the same angle. Using print pattern,
The B side on the exposed side of the scored tablet transported by the first transporter is imaged with a B0 scored camera,
From the first carrier, the scored tablet of which the surface B has been imaged is turned upside down, and the second image in the state of being mirror-inverted with the center line parallel to the transport direction of the scored tablet as the central axis when viewed in the imaging direction. The A-side secant camera, which is the exposed side opposite to the B-side of the scored tablet transported by the second transporter, is imaged by the A-plane secant camera.
If a secant appears on the A-plane, the A-plane is calculated by using the pattern of the A-plane angle system corresponding to the extraction angle of the secant of the A-plane extracted by the A determination unit with respect to the A-plane. Print with a printer,
If the secant does not appear on the A-plane, the A-plane is used by using the pattern of the A-plane angle system corresponding to the extraction angle of the secant of the B-plane extracted by the B0 judging unit for the A-plane. Print with a printer,
From the second transporter, the scored tablet of which the surface A has been imaged is turned upside down, and the third image is mirror-inverted with a center line parallel to the transport direction of the scored tablet as a central axis when viewed in the imaging direction. The B-side on the exposed side of the scored tablets transported by the third carrier is imaged by the B-side scored camera.
In the third conveyance body, when a dividing line appears on the B surface, the extraction angle of the dividing line of the B surface extracted by the B determining unit is less than 90°, and the extraction angle of the dividing line of the A surface is If it is less than 90°, or if the extraction angle of the secant of the B surface is 90° or more and the extraction angle of the secant of the A surface is 90° or more, the secant of the B surface is Printing is performed by the B-side printer using the pattern of the B-side angle system corresponding to the extraction angle, the extraction angle of the secant of the B-side is less than 90°, and the extraction angle of the secant of the A-side is 90° or more. Or, if the extraction angle of the secant of the B surface is 90° or more and the extraction angle of the secant of the A surface is less than 90°, it is considered that the extraction angle of the secant of the B surface is inverted by 180°. The same correction is performed, and the same B surface is printed by the same B surface printer using the same B surface angle system pattern corresponding to the corrected angle.
In the third carrier, when the dividing line does not appear on the B-side, the B-side angle system pattern corresponding to the extraction angle of the dividing line on the A-side is used for the B-side. And a control unit that controls printing on a surface printer
Scored tablet printing device. The A-side angle system and the B-side angle system of the print pattern have an angle range of 180°±the required angle as a set angle range, and the respective patterns are set in the same set angle range for each required angle. Are
Claim 4 is the scored tablet printing apparatus of item 5.

Images