CN115826888A - Method for acquiring process parameters, printing method, digital printer and storage medium - Google Patents

Abstract

The present application relates to the technical field of digital printers, in particular to a method for acquiring process parameters, a printing method, a digital printer, and a computer-readable storage medium. In an embodiment of the present application, the digital printer can obtain the similarity between the order chart in the image of the production order drawing and each order chart template in at least one order chart template stored in the preset order library, and in the at least one order chart template It is determined that the order chart template whose similarity with the order chart is not less than the similarity threshold is the target order chart template. The digital printer can automatically obtain the same process parameters in the target order chart template and the production order drawing, and the different process parameters in the target order chart template and the production order drawing can be manually adjusted by the user. The user does not need to input the first process parameters in the production order drawings to the digital printer one by one, thereby reducing the acquisition time of the process parameters and improving the accuracy of the acquired process parameters.

Description

Acquisition method of process parameters, printing method, digital printer and storage medium

technical field

The present application relates to the technical field of digital printers, in particular to a method for acquiring process parameters, a printing method, a digital printer and a computer-readable storage medium.

Background technique

When the digital printer is printing, technicians need to manually input the process parameters in the production order drawings into the digital printer. However, among all the production orders of digital printers, the relatively small and unconcentrated production orders (that is, loose orders) account for a relatively high proportion. There are gaps in the layout style and text content of order charts in different order drawings.

Therefore, in the actual production process, the operation process of manually inputting process parameters is relatively cumbersome and will take up a lot of time, resulting in low production efficiency. In addition, the way of manually inputting process parameters is also prone to input wrong process parameters, resulting in invalid products and waste of production materials.

Contents of the invention

In order to overcome the time-consuming and error-prone problems of manually inputting process parameters, the embodiment of the present application provides a method for obtaining process parameters, a printing method, a digital printer, and a computer-readable storage medium, which can reduce the time spent on obtaining process parameters by a digital printer. Time, improve the accuracy of the process parameters obtained.

In order to solve the above technical problems, the embodiments of the present application provide the following technical solutions:

In the first aspect of the present application, a method for acquiring process parameters is provided. The method is applied to a digital printer, and the digital printer includes a human-computer interaction interface. In the method: the digital printer collects an image of a production order drawing through an image acquisition device, the image includes an order chart, and the order chart includes a first process parameter. The digital printer obtains the similarity between the order chart and each order chart template in at least one order chart template stored in the preset order library; if the similarity between at least one order chart template and the order chart is not less than the preset similarity threshold, the digital printer determines a target order chart template in at least one order chart template whose similarity with the order chart is not less than the preset similarity threshold, and the target order template includes the second process parameter; the digital printer passes The human-computer interaction interface displays the second process parameter; if the first operation acting on the human-computer interaction interface is detected, the digital printer responds to the first operation, and the human-computer interaction interface displays the The second process parameter is adjusted, and the first process parameter is obtained based on the adjusted second process parameter.

In the embodiment of the present application, the digital printer can acquire the similarity between the order chart in the image of the production order drawing and each order chart template in at least one order chart template stored in the preset order library, if there is at least one order chart template The similarity with the order chart is not less than a preset similarity threshold, and the digital printer determines that the order chart template whose similarity with the order chart is not less than the preset similarity threshold is a target order chart template. The greater the similarity between the order graph and the target order graph template, the greater the probability that the first process parameter in the order graph is the same as the second process parameter in the target order graph. Therefore, the digital printer can display the second process parameter through the human-computer interaction interface, so that the user can adjust different parts of the first process parameter and the second process parameter through the human-computer interaction interface, and adjust the first process parameter and the second process parameter. The same part of , no adjustment is required. Therefore, the digital printer can automatically obtain the same process parameters in the target order chart template and the production order drawing, and the different process parameters in the target order chart template and the production order drawing can be manually adjusted by the user. The user does not need to input the first process parameters in the production order drawing into the digital printer one by one, thereby reducing the acquisition time of the process parameters and improving the accuracy of the acquired process parameters.

In some embodiments, after displaying the second process parameter through the human-computer interaction interface, the method further includes: if a second operation acting on the human-computer interaction interface is detected, responding to the second Operation, determining the second process parameter as the first process parameter.

In some embodiments, after obtaining the first process parameters based on the adjusted second process parameters, the method further includes: generating a new order chart template based on the target order chart template and the adjusted second process parameters; The new order chart template is stored in the preset order library.

In some embodiments, the method further includes: if the similarities between the order graph and each of the order graph templates are less than a preset similarity threshold, performing feature extraction on the image to obtain the order graph Several information elements in the information element, the information elements are text, graphics or symbols; obtain the coordinate positions corresponding to the information elements based on the same coordinate system; display the information through the human-computer interaction interface according to the coordinate positions of the information elements element; if a third operation acting on the human-computer interaction interface is detected, in response to the third operation, adjust the content of the information element and/or the coordinate position corresponding to the information element, so as to obtain the Describe the first process parameter.

In some embodiments, the method further includes: generating an editable order chart document based on the adjusted content of the information element and/or the position coordinates corresponding to the information element; using the order chart document as a new order The chart template is stored in the preset order library.

In some embodiments, the feature extraction of the image includes: preprocessing the image, wherein the preprocessing includes filtering, cropping and/or rectification; Image feature extraction.

In some embodiments, the first process parameter includes delivery time, and when the number of the production order drawings is multiple, the method further includes: determining each production order drawing based on the delivery time of each production order drawing The production sequence corresponding to the order drawings, so that the digital printer can perform printing operations based on the production sequence.

In the second aspect of the present application, a printing method is also provided, which is applied to a digital printer. In this method, the digital printer obtains the first process parameter in the production order drawing according to the method described in the first aspect, and based on the first process parameters for the print job.

In the third aspect of the present application, there is also provided a digital printer, the digital printer includes: a processor, and a memory storing instructions, and when the instructions are executed by the processor, the digital printer executes the first aspects of the method.

In the fourth aspect of the present application, there is also provided a computer-readable storage medium, which is characterized in that the computer-readable storage medium stores instructions, and when the instructions are executed by the digital printer, the digital printer executes the first aspects of the method.

It should be understood that what is described in the Summary of the Invention is not intended to identify key or important features of the disclosure, nor is it intended to limit the scope of the disclosure. Other features of the present disclosure will become easily understood through the following description.

Description of drawings

In order to illustrate the technical solutions of the embodiments of the present application more clearly, the following briefly introduces the drawings that are used in the embodiments of the present application. Apparently, the drawings described below are only some embodiments of the present application, and those skilled in the art can also obtain other drawings based on these drawings without creative efforts.

Fig. 1 is a schematic diagram of the hardware structure of a digital printer for performing a process parameter acquisition method provided by some embodiments of the present application;

Fig. 2 is a schematic flow chart of a process parameter acquisition method provided by some embodiments of the present application;

Fig. 3 is a schematic flow chart of a process parameter acquisition method provided by other embodiments of the present application;

Figure 4 is an image of an order form provided by some embodiments of the present application.

Detailed ways

Hereinafter, the principle and spirit of the present disclosure will be described with reference to several exemplary embodiments shown in the accompanying drawings. It should be understood that these specific embodiments are described only to enable those skilled in the art to better understand and realize the present disclosure, rather than to limit the scope of the present disclosure in any way. In the following description and claims, unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art.

As used herein, the term "comprising" and its analogs should be interpreted as an open inclusion, ie "including but not limited to". The term "based on" should be understood as "based at least in part on". The term "one embodiment" or "the embodiment" should be read as "at least one embodiment". The terms "first", "second", etc. may refer to different or the same objects, and are used only to distinguish the referred objects without implying a specific spatial order, temporal order, important sexual order, and so on.

Fig. 1 exemplarily shows the hardware structure of a digital printer for performing the process parameter acquisition method, as shown in Fig. Machine interface 14. It should be understood that the structure shown in FIG. 1 does not constitute a specific limitation to the digital printer 10 . In some other embodiments of the present application, the digital printer 10 may include more or fewer components than those shown in the illustrations, or some components may be combined, some components may be separated, or the components may be arranged differently. The illustrated components can be realized in hardware, software or a combination of software and hardware.

The processor 11 and the memory 12 may be connected through a bus or in other ways. In FIG. 1 , connection through a bus is taken as an example.

The memory 12, as a non-volatile computer-readable storage medium, can be used to store non-volatile software programs, non-volatile computer-executable programs and modules, and the processor 11 runs the non-volatile software stored in the memory 12 software programs, instructions and modules, so as to execute various functional applications and data processing of the digital printer, that is, to realize the method provided by any embodiment of the present application.

The memory 12 may include a program storage area and a data storage area, wherein the program storage area may store an operating system and at least one application required by a function; the data storage area may store data created according to the use of the digital printer, and the like. In addition, the memory 12 may include a high-speed random access memory, and may also include a non-volatile memory, such as at least one magnetic disk storage device, flash memory device, or other non-volatile solid-state storage devices. In some embodiments, the memory 12 may optionally include a memory that is remotely located relative to the processor 11, and these remote memories may be connected to the controller through a network. Examples of the aforementioned networks include, but are not limited to, the Internet, intranets, local area networks, mobile communication networks, and combinations thereof.

The image capture device 13 is used to capture still images or videos. The image acquisition device 13 includes a lens and a photosensitive element. The object generates an optical image through the lens and projects it to the photosensitive element. The photosensitive element may be a charge-coupled device (CCD) or a complementary metal-oxide-semiconductor (CMOS) phototransistor. The photosensitive element converts the light signal into an electrical signal, and then transmits the electrical signal to the processor to convert it into a standard RGB, YUV and other image signals.

The human-computer interaction interface 14 specifically includes a control panel. The control panel specifically includes a display unit and keys. The display unit is used to display the input process parameters, and the display unit can also display an order chart template. The display unit includes a display panel. The display panel may be a liquid crystal display (LCD), an organic light emitting diode (OLED), or the like. The key can be a mechanical key or a touch key. The digital printer 100 can receive key inputs and generate key signal inputs related to user settings and function control of the digital printer 100 .

The nozzle assembly 15 is used to print target patterns on the printing medium. The spray head assembly 15 includes at least one spray head. The print head has a plurality of nozzles for ejecting ink droplets, and the plurality of nozzles are arranged according to a certain rule. In some embodiments, each showerhead can include a first showerhead unit, a second showerhead unit, a third showerhead unit, and a fourth showerhead unit; wherein, the first showerhead unit is used to print cyan ink (Cyan, C), and the second showerhead unit The unit is used to print magenta ink (Magenta, M), the third head unit is used to print yellow ink (Yellow, Y), and the fourth head unit is used to print black ink (Black, K). C, M, Y and K are four basic colors, and the processor 11 generates the required colors by controlling each of the nozzle units in the nozzle to print different doses of ink. In some other embodiments, each nozzle also includes a nozzle unit for printing other color inks, for example, the nozzle may also include a nozzle unit for printing gold ink, royal blue ink and/or silver ink.

At present, the process parameters in the order form of industrial digital printers are mainly entered manually. Manual input is time-consuming and labor-intensive, which will reduce production efficiency. In addition, manual input is likely to cause errors in the input of process parameters, resulting in the cancellation of orders and waste of production materials. In addition, due to the different typesetting, format and/or graphics and texts of the order charts in different production order drawings, the traditional Optical Character Recognition (Optical Character Recognition, OCR) technology cannot accurately identify the Order chart. Therefore, the embodiment of the present application provides a method for obtaining process parameters. In this method, the digital printer can automatically obtain the same process parameters in the target order chart template and the production order drawing, and the target order chart template is different from the production order drawing. The process parameters can be manually adjusted by the user. The first process parameters in the production order drawings do not need to be input to the digital printer one by one by the user, thereby reducing the acquisition time of the process parameters and improving the accuracy of the acquired process parameters.

Exemplarily, FIG. 2 shows the flow of a method for obtaining process parameters, and the method is applied to a digital printer, such as the digital printer 10 in FIG. 1 . As shown in Figure 2, the method includes the following steps:

Step 21: collecting an image of a production order drawing by an image acquisition device, the image including an order chart, and the order chart includes a first process parameter;

In this embodiment, in order to acquire the first process parameter in the production order drawing, the digital printer needs to acquire the image of the production order drawing through an image acquisition device. FIG. 4 exemplarily shows an image of a production order drawing of a digital printer for printing corrugated paper. As shown in FIG. 4 , the generated order drawing and its image include an order chart. Order charts typically include text, symbols, and graphics. Wherein, the text includes process parameters, such as text information such as delivery time, color of the pattern, model or size of the product, and the like. In this embodiment, the process parameter in the order chart is the first process parameter.

Step 22: Obtain the similarity between the order chart and each order chart template in at least one order chart template stored in the preset order library;

Step 23: If the similarity between at least one order chart template and the order chart is not less than the preset similarity threshold, then at least one order chart template whose similarity with the order chart is not less than the preset similarity threshold Determine the target order chart template, the target order template includes the second process parameters;

In this embodiment, at least one order chart template is pre-stored in the digital printer. Specifically, the order chart template may be an editable order chart document. During the historical production process of the digital printer, the digital printer can store the order chart document corresponding to the production order drawing used each time as an order chart template in the preset order library. After the digital printer captures the image of the production order drawing through the image acquisition device, the order chart in the image is compared with each order chart template in at least one order chart template stored in the preset order library, so as to obtain How similar the order chart in the image is to the individual order chart templates. In some embodiments of the present application, the digital printer can also determine the similarity between the order chart in the image and each order chart template and the preset similarity threshold. If there is at least one order chart template whose similarity with the order chart is not less than the preset similarity threshold in the preset order library, the target order chart template is determined from at least one order chart template stored in the preset order library, and The similarity between the target order chart template and the order chart is not less than a preset similarity threshold. The preset similarity threshold may be any suitable value, such as 75%, 80%, or 85%. Specifically, in some embodiments, the digital printer may acquire the similarity between each order chart template in the preset order library and the order chart, and determine the order chart template with the highest similarity to the order chart as the target order template. The target order template includes a second process parameter.

Step 24: Displaying the second process parameter through the human-computer interaction interface;

In some embodiments, after the digital printer determines the target order chart template, the second process parameter in the target order template can be displayed through a human-computer interaction interface. Specifically, the digital printer can only display the text of the second process parameter through the display unit of the control panel, and can also display the target order chart template through a human-computer interaction interface (for example, a computer display screen).

Step 25: If the first operation acting on the human-computer interaction interface is detected, adjust the second process parameter displayed on the human-computer interaction interface in response to the first operation, and based on the adjusted The first process parameter is obtained by the second process parameter.

In some embodiments, when the electronic device detects the first operation acting on the human-computer interaction interface, the electronic device adjusts the second process parameter displayed on the human-computer interaction interface in response to the first operation, and based on the adjusted The second process parameter obtains the first process parameter. Specifically, the first operation may be a click or touch operation on a button.

For example, the first process parameter may include multiple parameter data, and the second process parameter also includes multiple parameter data. The larger the similarity threshold, the more parts of the same parameter data between the first process parameter and the second process parameter. Therefore, the digital printer can display the second process parameter through the human-computer interaction interface, so that the user can adjust different parts of the first process parameter and the second process parameter through the human-computer interaction interface, and adjust the first process parameter and the second process parameter. The same part of , no adjustment is required. Therefore, the digital printer can automatically obtain the same process parameters in the target order chart template and the production order drawing, and the different process parameters in the target order chart template and the production order drawing can be manually adjusted by the user. The user does not need to input the first process parameters in the production order drawing into the digital printer one by one, thereby reducing the acquisition time of the process parameters and improving the accuracy of the acquired process parameters.

In some embodiments, after the second process parameter is displayed through the human-computer interaction interface, if the digital printer detects a second operation acting on the human-computer interaction interface, in response to the second operation, the second process parameter is determined as the first 1. Process parameters. In this embodiment, when the first process parameter in the production order drawing is exactly the same as the second process parameter displayed on the human-computer interaction interface, the user does not need to modify the second process parameter, and the user can apply it to the human-computer interaction interface. The second operation directly determines the second process parameter as the first process parameter.

In some embodiments, after the digital printer obtains the first process parameters based on the adjusted second process parameters, the digital printer can also generate a new order chart template based on the target order chart template and the adjusted second process parameters, and convert the new order Chart templates are stored in the preset order library. In this embodiment, the digital printer can store the new order chart template corresponding to the production order chart drawing used in each production in the preset order library, so that the order chart templates stored in the preset order library are more abundant and diverse, thereby facilitating In the subsequent production process, find an order chart template similar to the order chart in the production order drawing in the preset order library.

In some embodiments, the above method also includes the following steps:

Step 26: If the similarity between the order graph and each of the order graph templates is less than the preset similarity threshold, then perform feature extraction on the image to obtain several information elements in the order graph, the information elements are text, graphics or symbols;

Step 27: Obtain the coordinate position corresponding to the information element based on the same coordinate system;

Step 28: displaying the information element through the human-computer interaction interface according to the coordinate position of the information element;

Step 29: If a third operation acting on the human-computer interaction interface is detected, adjust the content of the information element and/or the coordinate position corresponding to the information element in response to the third operation, so as to obtain The first process parameter.

In this embodiment, when the similarities between the order chart and each of the order chart templates are less than the preset similarity threshold, the contents in the order chart and the order chart templates are quite different. It is not easy for the digital printer to obtain the first process parameter in the order chart through the order chart template; at this time, the digital printer performs feature extraction on the image of the order chart drawing, so as to obtain the information in the order chart, for example, text, graphics or symbol information. In some embodiments, in order to improve the accuracy of the extracted image information, the digital printer performs preprocessing on the image before performing feature extraction on the image, wherein the preprocessing includes filtering, cropping and/or rectification. For example, crop the part of the image that is not related to the order chart.

In some embodiments, the digital printer can specifically use a labeling tool to select the content of the preprocessed image to obtain several marked areas, perform feature extraction on each marked area, obtain the graphic information elements therein, and obtain the corresponding text or symbol. The digital printer establishes a plane Cartesian coordinate system based on the processed image, so as to obtain the coordinate position of each marking area or information element in the same coordinate system. The digital printer can also display the information element through the human-computer interaction interface according to the coordinate position of the information element. For example, the digital printer can, according to the coordinate position of each marking area, pair the text or symbol associated with the corresponding coordinate position according to the coordinate position Two-dimensional sorting is performed, and the sorted information elements are recorded in a specific table to obtain an editable initial order chart document, and the editable initial order chart document is displayed through a human-computer interaction interface. If the digital printer detects the third operation acting on the human-computer interaction interface, in response to the third operation, the content of the information elements in the initial order chart document displayed on the human-computer interaction interface and/or the coordinates corresponding to the information elements The position is adjusted to obtain the first process parameter.

In some embodiments, the digital printer can also generate a final editable order chart document based on the adjusted content of the information element and/or the position coordinates corresponding to the information element; specifically, the digital printer can generate the final editable order chart document based on the adjusted The initial order chart document generates a final editable order chart document. Then, the digital printer stores the final order chart document as a new order chart template in the preset order library.

In some embodiments, when there are multiple production order drawings and the first process parameter includes delivery time, the digital printer can also determine the production sequence corresponding to each production order drawing based on the delivery time of each production order drawing , so that the digital printer can print jobs based on the production first-come-first-served basis. For example, the digital printer can sort the production sequence of the production order drawings according to the order of delivery time from early to late, so that the digital printer can prioritize the production jobs of the production order drawings with earlier delivery times.

The embodiment of the present application also provides a printing method. In this method, in order to improve the printing efficiency, the digital printer can acquire the process parameters that need to be used in the printing process according to the process parameter acquisition method provided in the above embodiments, and based on the acquired process parameters parameters for the print job.

In the embodiment of the present application, the digital printer can acquire the similarity between the order chart in the image of the production order drawing and each order chart template in at least one order chart template stored in the preset order library, and in the at least one order chart template It is determined that the order chart template whose similarity with the order chart is not less than the similarity threshold is the target order chart template. The digital printer can automatically obtain the same process parameters in the target order chart template and the production order drawing, and the different process parameters in the target order chart template and the production order drawing can be manually adjusted by the user. The user does not need to input the first process parameters in the production order drawings to the digital printer one by one, thereby reducing the acquisition time of the process parameters and improving the accuracy of the acquired process parameters.

The embodiment of the present application also provides a computer-readable storage medium, the computer-readable storage medium stores computer-executable instructions, and the computer-executable instructions are executed by one or more processors, such as a process in FIG. 1 The processor 11 can make the above-mentioned one or more processors execute the focusing method in any of the above-mentioned method embodiments, for example, execute the method steps 21 to 25 in FIG. 2 described above, and execute the method step 21 in FIG. 3 Go to step 29.

The embodiment of the present application also provides a computer program product, the computer program product includes a computer program stored on a non-volatile computer-readable storage medium, the computer program includes program instructions, when the program instructions are executed by a machine When executing, the machine is made to execute the above-mentioned focusing method. For example, execute the method steps 21 to 25 in FIG. 2 described above, and execute the method steps 21 to 29 in FIG. 3 .

The device embodiments described above are only illustrative, and the units described as separate components may or may not be physically separated, and the components shown as units may or may not be physical units, that is, they may be located in One place, or it can be distributed to multiple network elements. Part or all of the modules can be selected according to actual needs to achieve the purpose of the solution of this embodiment.

Finally, it should be noted that: the above embodiments are only used to illustrate the technical solutions of the present invention, not to limit them; under the idea of the present invention, the technical features in the above embodiments or different embodiments can also be combined, The steps may be performed in any order, and there are many other variations of the different aspects of the invention as described above, which have not been presented in detail for the sake of brevity; although the invention has been described in detail with reference to the preceding examples, those of ordinary skill in the art The skilled person should understand that it is still possible to modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements for some of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the various implementations of the present invention. The scope of technical solutions.

Claims (10)

1. A method for obtaining process parameters, applied to a digital printer, said digital printer comprising a man-machine interface, characterized in that said method comprises: collecting an image of a production order drawing by an image collection device, the image including an order chart, and the order chart includes a first process parameter; Obtain the similarity between the order chart and each order chart template in at least one order chart template stored in the preset order library; If the similarity between at least one order chart template and the order chart is not less than the preset similarity threshold, then determine the target in at least one order chart template whose similarity with the order chart is not less than the preset similarity threshold An order chart template, the target order template includes a second process parameter; displaying the second process parameter through a human-computer interaction interface; If the first operation acting on the human-computer interaction interface is detected, in response to the first operation, the second process parameter displayed on the human-computer interaction interface is adjusted, and based on the adjusted second The process parameter obtains the first process parameter. 2. The method according to claim 1, characterized in that, after displaying the second process parameter through the man-machine interface, the method further comprises: If a second operation acting on the human-computer interaction interface is detected, in response to the second operation, the second process parameter is determined as the first process parameter. 3. The method according to claim 1, wherein, after obtaining the first process parameter based on the adjusted second process parameter, the method further comprises: generating a new order chart template based on the target order chart template and the adjusted second process parameter; The new order chart template is stored in the preset order library. 4. The method according to any one of claims 1-3, wherein the method further comprises: If the similarity between the order graph and each of the order graph templates is less than the preset similarity threshold, feature extraction is performed on the image to obtain several information elements in the order graph, and the information elements are text , graphics or symbols; Acquiring the coordinate position corresponding to the information element based on the same coordinate system; displaying the information element through the human-computer interaction interface according to the coordinate position of the information element; If a third operation acting on the human-computer interaction interface is detected, in response to the third operation, the content of the information element and/or the coordinate position corresponding to the information element are adjusted, so as to obtain the first 1. Process parameters. 5. method according to claim 4, is characterized in that, described method also comprises: Generating an editable order chart document based on the adjusted content of the information element and/or the position coordinates corresponding to the information element; The order graph document is stored in the preset order library as a new order graph template. 6. The method according to claim 4, wherein said performing feature extraction on said image comprises: performing preprocessing on the image, wherein the preprocessing includes filtering, cropping and/or rectification; Feature extraction is performed on the preprocessed image. 7. The method according to claim 5, wherein the first process parameter comprises delivery time, and when the quantity of the production order drawing is multiple, the method further comprises: The production sequence corresponding to each production order drawing is determined based on the delivery time of each production order drawing, so that the digital printer performs a printing job based on the production sequence. 8. A printing method applied to a digital printer, characterized in that the method comprises: According to the method described in any one of claims 1-7, the first process parameter in the production order drawing is obtained; A printing job is performed based on the first process parameter. 9. A digital printer, characterized in that, the digital printer comprises: a processor, and a memory storing instructions, and when the instructions are executed by the processor, the digital printer executes any one of claims 1 to 8. one of the methods described. 10. A computer-readable storage medium, characterized in that the computer-readable storage medium stores instructions, and when the instructions are executed by a digital printer, the digital printer executes the procedure described in any one of claims 1 to 8. Methods.

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