JP3014118U - Marking device - Google Patents

Abstract

(57) [Abstract] [Purpose] In a marking device using an ink impregnated roller, the ink on the new ink impregnated roller can be used to the end without waste without reducing the amount of ink, and ink drools. Prevents contamination of the marking device and the like due to the ink, the marking quality is constant regardless of the remaining amount of ink on the ink impregnated roller, and ink bleeding and rubbing due to poor drying are prevented. [Structure] An ink amount adjusting roller 2 made of an ultrafine porous open-cell type sponge rubber is provided between the ink impregnating roller 1 and the metal roller 3, and the ink of the ink impregnating roller 1 is absorbed by the ink amount adjusting roller 2. , Metal roller 3
The amount or thickness of the ink transferred to the surface of is constant.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a marking device for marking a manufacturing date, a manufacturing lot number, etc. on a label or an outer box.

[0002]

[Prior art]

 A microporous plastic roller (ink impregnation roller) is impregnated with ink in advance as a marking device for marking the manufacturing date, manufacturing lot number, etc. on the labels and outer boxes of pharmaceuticals and foods. There is known a device that supplies ink to a rotating rubber type via a roller and a rubber roller, supplies a label and an outer box in synchronization with the rotation of the rubber type, and imprints the manufacturing date on a predetermined position. (Well-known, not shown).

Various types of ink impregnating rollers themselves are commercially available as general-purpose products (for example, trade name Permalon, etc.), and when the impregnated ink is exhausted, it can be replaced with a new one easily. It is widely used in the field of marking devices because it can refill or replace ink.

[0004]

[Problems to be solved by the device]

 However, the ink-impregnated roller is sufficiently impregnated with ink when it is new or close to it, and the impregnated ink is squeezed out and drips depending on the contact pressure of the metal roller that contacts the ink-impregnated roller. There was a problem that it could run off and contaminate the marking device and its surroundings. In addition, when the ink impregnation roller is new or close to it, the amount of ink supplied to the rubber type is large, and the imprinted characters, etc. bleed, and improper imprinting such as rubbing due to poor drying and double-printing occurs. Had a problem.

On the other hand, in order to prevent such dripping of ink and bleeding of imprinted characters, ink reduction may be performed by squeezing out a certain amount of ink from a new ink-impregnated roller in advance. In this case, when reducing the amount of ink, the new ink-impregnated roller is left to stand until the ink does not drip, or the ink-impregnated roller is rotated and the excess ink is forcibly removed by centrifugal force. However, reducing the amount of ink causes dripping and splashing of ink, which causes problems such as polluting the surrounding environment and soiling the hands of workers. In addition, the reduced amount of ink is not reused and is eventually discarded, which is uneconomical.

The present invention has been made to solve the above problems, and a commercially available ink impregnated roller can be used without reducing the amount of ink in advance. It is an object of the present invention to provide a marking device that prevents bleeding, marking defects such as rubbing due to poor drying and double-printing.

[0007]

[Means for Solving the Problems]

 In order to achieve the above object, the marking device of the present invention comprises an ink impregnating roller, an ink amount adjusting roller which is in contact with the outer peripheral surface of the cylinder of the ink impregnating roller and absorbs the ink impregnated in the ink impregnating roller, A metal roller that abuts the outer peripheral surface of the cylinder of the ink amount adjusting roller and adheres the ink to the outer peripheral surface of the cylinder, and an outer peripheral surface of the cylinder of the metal roller described above. It is provided with a rubber roller to be attached, and a type roller having a rubber type on a surface that abuts on an outer peripheral surface of the rubber roller, and making the ink attached to the surface of the rubber roller adhere to the surface of the rubber type. In the above structure, the ink amount adjusting roller is preferably an ultrafine porous open-cell sponge rubber roller. In the above structure, the contact pressure between the ink impregnating roller and the ink amount adjusting roller is preferably 50 to 250 g. Further, in the above structure, it is preferable that the contact pressure between the ink impregnation roller and the ink amount adjusting roller is variable.

[0008]

[Action]

 According to the marking device of the present invention configured as described above, even if a new ink impregnating roller is installed without reducing the ink in advance, the ink of the ink impregnating roller is absorbed by the ink amount adjusting roller, No excess ink drips from the impregnation roller and does not contaminate the marking device or its surroundings. Also, since the ink amount adjusting roller functions as a buffer member against fluctuations in the ink amount, the metal roller does not transfer the ink directly from the ink impregnating roller, but transfers the ink from the ink amount adjusting roller. Therefore, the amount of ink adhering to the outer peripheral surface of the cylinder of the metal roller is almost constant regardless of the remaining amount of ink on the ink impregnating roller. Further, since the amount of ink adhering to the surface of the metal roller is almost constant, the amount of ink transferred to the rubber type characters through the rubber roller (there is an ink film) is also almost constant. As a result, bleeding of the characters printed on the surface of the label or outer box due to the rubber type characters, and rubbing due to improper drying and double marking such as double-printing do not occur.

Further, the ultrafine porous open-cell sponge rubber roller has good ink absorption and has less surface irregularities. Therefore, by using an ultra-fine porous open-cell sponge rubber roller as the ink amount adjustment roller, it becomes easy to absorb the ink from the ink impregnation roller and transfer the ink to the metal roller, and adhere to the metal roller surface. The unevenness of the ink film thickness is eliminated, resulting in improved marking quality. If the contact pressure between the ink impregnating roller and the ink amount adjusting roller is too low, the ink on the ink impregnating roller will not be absorbed sufficiently by the ink amount adjusting roller, and the ink will drip from the ink impregnating roller or on the metal roller. The ink is not transferred sufficiently, which eventually causes fading of the printed characters and the like and lightness of color. On the other hand, if the contact pressure between the ink impregnation roller and the ink amount adjustment roller is too high, the ink impregnation roller will be squeezed, and the ink will drip from the ink impregnation roller or the amount of ink transferred to the metal roller will be too large. Finally, it may cause bleeding of the printed characters, rubbing due to improper drying, double-printing, or other improper marking. Therefore, by setting the contact pressure between the ink impregnation roller and the ink amount adjusting roller to 50 to 250 g, the ink is appropriately absorbed by the ink amount adjusting roller without dripping from the ink impregnating roller and transferred to the metal roller. The amount of ink to be printed becomes constant, and the printing quality can be kept constant without causing printing defects. Furthermore, by varying the contact pressure between the ink impregnation roller and the ink amount adjusting roller, it is possible to keep the ink amount at the ink amount adjusting roller constant according to the amount of ink remaining on the ink impregnating roller. As a result, the amount of ink transferred onto the metal roller can be made more uniform, and the printing quality can be improved without causing printing defects.

[0010]

【Example】

 The configuration of a preferred embodiment of the marking device of the present invention will be described with reference to FIG. In FIG. 1, the ink impregnating roller 1 is a microporous plastic roller impregnated with ink as in the conventional example, and a commercially available product can be used. The ink amount adjusting roller 2 is, for example, an ultrafine porous open-cell type sponge rubber roller of ethylene propylene polymer system, and the outer peripheral surface of the cylinder is applied to the outer peripheral surface of the ink impregnating roller 1 at a predetermined pressure, for example, 50 to 250 g. It is provided so as to abut. The metal roller 3 is provided so that the outer peripheral surface of the cylinder abuts on the outer peripheral surface of the ink amount adjusting roller 2, and ink is attached to the outer peripheral surface of the cylinder. The rubber roller 4 is provided so as to contact the outer peripheral surface of the cylinder of the metal roller 3, and the ink having a predetermined film thickness is attached to the outer peripheral surface of the cylinder. The type roller 5 has a rubber type 6 on the surface that contacts the outer peripheral surface of the rubber roller 4, and the ink attached to the surface of the rubber roller 4 is attached to the surface of the rubber type 6 by the rotation thereof. The suction roller 7 is provided so as to face the type roller 5, and the label 8 which is vacuum-sucked on the outer peripheral surface of the cylinder is synchronized with the rotation of the suction roller 7, and particularly the type portion of the rubber type 6 is covered by the label 8. The sheet is conveyed in a predetermined direction so that it is aligned with the stamp space 9.

At least the rubber roller 4, the metal roller 3, and the ink amount adjusting roller 2 are connected to the type roller 5 by a toothed wheel, and are rotated at a constant speed as the type roller 5 rotates. The ink impregnating roller 1 is rotatably supported by a shaft, and is rotated by frictional force as the ink amount adjusting roller 2 rotates. It is not always necessary for the other rollers 2, 3 and 4 to make one revolution while the type roller 5 makes one revolution. It suffices that the portion of the type roller 5 on which the rubber type 6 comes into contact is updated and new ink is supplied. Further, the shaft of the ink impregnation roller 1 may be movable in parallel, and the contact pressure between the ink impregnation roller 1 and the ink amount adjusting roller 2 may be variable.

Next, the operation of the marking device having the above structure will be described. First, when a new ink impregnation roller 1 is attached, the ink amount adjusting roller 2 is rotated several times so that the ink impregnated in the ink impregnating roller 1 is absorbed by the ink amount adjusting roller 2. Then, the ink remaining amount on the ink impregnating roller 1 is reduced, and the ink absorbed by the ink amount adjusting roller 2 is evenly dispersed. At this stage, almost no ink drips from the ink impregnating roller 1 and it does not contaminate the marking device or its surroundings, and the ink loss of the new ink impregnating roller, which has been done conventionally, disappears and the ink is removed. It is possible to use it to the end without waste.

Next, when the printing roller 5, the rubber roller 4, the metal roller 3 and the ink amount adjusting roller 2 are rotated to imprint the label 8, the ink absorbed by the ink amount adjusting roller 2 is 3 is transferred onto the outer peripheral surface of the cylinder. At this time, the ink amount adjusting roller 2 functions as a buffer member against fluctuations in the ink amount, and the metal roller 3 does not transfer the ink directly from the ink impregnating roller 1 but transfers the ink from the ink amount adjusting roller 2. It Therefore, the amount of ink adhering to the outer peripheral surface of the cylinder of the metal roller 3 is substantially constant regardless of the remaining amount of ink on the ink impregnating roller 1. That is, even if the ink impregnated roller 1 is new or in a state close to that, the amount (or film thickness) of the ink adhering to the surface of the metal roller 3 does not become too large. Further, since the amount of ink adhered to the surface of the metal roller 3 is almost constant, the amount of ink transferred to the rubber type 6 via the rubber roller 4 (there is an ink film) is also substantially constant. As a result, bleeding of characters or the like imprinted on the imprinted space 9 of the label 8 by the rubber type 6 and improper imprinting such as rubbing due to improper drying and double copying do not occur.

Generally, when the contact pressure between the ink impregnation roller 1 and the ink amount adjusting roller 2 is small, the ink of the ink impregnating roller 1 is not sufficiently absorbed by the ink amount adjusting roller 2 and the ink drips from the ink impregnating roller 1. The ink may fall off, or the ink may not be sufficiently transferred to the metal roller 3, which may cause fading of a printed character or the like and thinness of color. On the other hand, if the contact pressure between the ink impregnating roller 1 and the ink amount adjusting roller 2 is too large, the ink impregnating roller 1 is in a squeezed state, and the ink drips from the ink impregnating roller 1 or is transferred to the metal roller 3. If the amount is too large, it will eventually cause bleeding of the imprinted characters, rubbing due to improper drying and double imprinting, and other improper imprinting. Therefore, when the imprinting test was conducted by changing the contact pressure between the ink impregnation roller 1 and the ink amount adjusting roller 2 variously, good imprinting quality was obtained in the contact pressure range of 50 to 250 g. In particular, when the ink impregnated roller 1 is new or in a state close to that, it is found that about 50 g is particularly preferable.

The contact pressure between the ink impregnating roller 1 and the ink amount adjusting roller 2 is made variable, and the contact pressure is changed according to the remaining amount of ink on the ink impregnating roller 1, so that the ink in the ink amount adjusting roller 2 is changed. The amount can be kept constant, and the imprint quality can be improved without causing improper imprinting. For example, when the ink impregnating roller 1 is replaced with a new one, the contact pressure is set to 50 g, and then the contact pressure is gradually increased as the remaining amount of ink on the ink impregnating roller 1 decreases, and immediately before the ink runs out. It may be increased up to 250 g. By doing so, the ink impregnated in the ink impregnating roller 1 can be used up to the end without waste, and the printing quality can be kept constant during that time.

[0016]

[Effect of device]

 As described above, according to the marking device of the present invention, since the ink amount adjusting roller is provided between the ink impregnating roller and the metal roller, a new ink impregnating roller can be installed without reducing the ink amount in advance. However, the ink of the ink impregnating roller is absorbed by the ink amount adjusting roller, and the excess ink does not drip from the ink impregnating roller, and it is possible to prevent the marking device and its surroundings from being contaminated. In addition, the ink amount adjustment roller functions as a buffer member for fluctuations in the ink amount, and the metal roller transfers the ink from the ink amount adjustment roller, not from the ink impregnation roller, so that the ink that adheres to the outer peripheral surface of the cylinder of the metal roller is not transferred. The amount can be made almost constant regardless of the remaining amount of ink on the ink impregnation roller. In addition, since the amount of ink that adheres to the surface of the metal roller is almost constant, the amount of ink that is transferred to the rubber type through the rubber roller (there is an ink film) is also almost constant, and the rubber type causes the label or outer box to It is possible to prevent bleeding of characters or the like to be stamped on the surface, rubbing due to improper drying, double marking, and other defective marking.

In addition, since an ultrafine porous open-cell sponge rubber roller with good ink absorption and less surface irregularity is used as the ink amount adjusting roller, the ink from the ink impregnating roller to the ink amount adjusting roller is The ink can be easily transferred from the absorption and ink amount adjusting roller to the metal roller, the unevenness of the film thickness of the ink adhering to the surface of the metal roller is eliminated, and as a result, the printing quality can be improved. Also, by setting the contact pressure between the ink impregnating roller and the ink amount adjusting roller to 50 to 250 g, the ink is appropriately absorbed by the ink amount adjusting roller without dripping from the ink impregnating roller and transferred to the metal roller. The amount of ink to be printed becomes constant, and the printing quality can be kept constant without causing printing defects. Further, by varying the contact pressure between the ink impregnation roller and the ink amount adjusting roller, the ink amount in the ink amount adjusting roller can be kept constant according to the remaining amount of ink on the ink impregnating roller. As a result, the amount of ink transferred onto the metal roller can be made more uniform, and the printing quality can be improved without causing printing defects.

[Brief description of drawings]

FIG. 1 is a perspective view showing the configuration of an embodiment of a marking device of the present invention.

[Explanation of symbols]

 1: Ink impregnation roller 2: Ink amount adjusting roller 3: Metal roller 4: Rubber roller 5: Type roller 6: Rubber type character 7: Adsorption roller 8: Label 9: Marking space

Claims (4)

[Scope of utility model registration request] 1. An ink impregnation roller, an ink amount adjusting roller that abuts on an outer peripheral surface of the cylinder of the ink impregnating roller, and absorbs ink impregnated in the ink impregnating roller; and an outer peripheral surface of the cylinder of the ink amount adjusting roller. A metal roller that abuts on the cylindrical outer peripheral surface of the metal roller, and a rubber roller that abuts the cylindrical outer peripheral surface of the metal roller and adheres an ink of a predetermined film thickness on the cylindrical outer peripheral surface of the metal roller; A marking device comprising a type roller having a rubber type on a surface in contact with an outer peripheral surface, and having a type roller for adhering ink attached to the surface of the rubber roller to the surface of the rubber type. 2. The marking device according to claim 1, wherein the ink amount adjusting roller is an ultrafine porous open-cell sponge rubber roller. 3. The contact pressure between the ink impregnation roller and the ink amount adjusting roller is 50 to 250 g.
The marking device described. 4. The marking device according to claim 3, wherein the contact pressure between the ink impregnating roller and the ink amount adjusting roller is variable.