JP6372170B2 - Printer control apparatus, print system, control method, and control program - Google Patents

Description

  The present invention relates to a printer control device and the like, and in particular, a printer control device, a printing system, and a control method capable of erasing unnecessary data left in a printer due to processing interruption or the like without depending on a user operation. And a control program.

  A printer normally executes print processing according to print data transmitted from the host device, but the processing may be interrupted for some reason during the print processing. For example, the printing process is interrupted when a problem such as a paper jam in the printer occurs or when the printer cover is opened.

  If the print processing is interrupted in this way, print data that has not been processed remains in the buffer in the printer, etc., but usually after restarting, the print job is processed again from the beginning. The print data is unnecessary data, so-called dust data, and if it is not erased, unnecessary printing, so-called dust printing, is performed in the next printing after the return.

  Conventionally, several proposals such as the following Patent Document 1 have been made regarding such a problem of dust printing. In the printer described in Patent Document 1, printing is stopped in response to a print cancel operation on the operation panel, received print data is discarded up to a code indicating a predetermined delimiter, and a data cancel request is transmitted to the host device. The process is executed.

JP 2004-130784 A

  As mentioned above, there are cases where unnecessary data remains in the printer, such as when a cancel operation is performed when print data is stored in the spooler on the host device side. In such a case, it is desired to deal with it as a function on the host device side.

  In addition, when using image data with a relatively large capacity, such as when printing labels, if the image data remains as such unnecessary data, the influence of the above-described problem becomes large, and more reliably. Measures to resolve are necessary.

  Moreover, it is preferable that the erasure of such unnecessary data is executed without requiring a user operation.

  Therefore, an object of the present invention is to provide a printer control device that can delete unnecessary data left in the printer due to processing interruptions, etc. without depending on user operations, etc. Is to provide.

  In order to achieve the above object, according to one aspect of the present invention, a printer control device that executes printing according to print data includes a transmission adjustment unit that transmits the print data to the printer, and the transmission adjustment unit includes: When the same data as the data included in the print data is present in the storage unit of the printer, a command for erasing the same data present in the storage unit is transmitted before transmitting the print data. To send to the printer.

  Furthermore, in the above invention, one preferable aspect is that the transmission adjustment unit acquires identification information of data existing in the storage unit of the printer, and the same information is stored in the storage unit based on the identification information. It is characterized by determining whether data exists or not.

  Further, in the above invention, a preferable aspect is that the storage unit of the printer includes a first storage unit and a second storage unit, the data includes image data, and the transmission adjustment unit transmits the image data to the first storage unit. It memorize | stores in 1 memory | storage part, and memorize | stores the said other data in a 2nd memory | storage part, It is characterized by the above-mentioned.

  Furthermore, in the above invention, a preferable aspect thereof is characterized in that the transmission adjustment unit transmits the print data to a printer after confirming a free space in the storage unit.

  Furthermore, in the above invention, one preferable aspect thereof is characterized in that the print data is data for printing a plurality of labels.

  In order to achieve the above object, according to another aspect of the present invention, there is provided a printing system including a printer that executes printing according to print data and a control device thereof, wherein the control device transmits the print data to the printer. An adjustment unit; the printer includes a storage unit that stores data included in the print data; and the transmission adjustment unit includes data identical to the data included in the print data in the storage unit of the printer In this case, before transmitting the print data, a command for deleting the same data existing in the storage unit is transmitted to the printer.

  In order to achieve the above object, according to still another aspect of the present invention, in a control method in a host device of a printer that executes printing according to print data, transmission adjustment for transmitting the print data to the printer to the host device. And the transmission adjustment unit exists in the storage unit before transmitting the print data when the same data as the data included in the print data exists in the storage unit of the printer. A command to delete the same data is transmitted to the printer.

  In order to achieve the above object, according to still another aspect of the present invention, there is provided a transmission step in which a control program that causes a host computer of a printer that executes printing according to print data to execute processing transmits the print data to the printer. If the same data as the data included in the print data exists in the storage unit of the printer before the transmission step, a command for deleting the same data existing in the storage unit is sent to the printer. And causing the host computer to execute an erasing step of transmitting.

  Further objects and features of the present invention will become apparent from the embodiments of the invention described below.

1 is a configuration diagram according to an embodiment of a print system to which the present invention is applied. FIG. 5 is a flowchart illustrating an example of a processing procedure in the language monitor 15;

  Embodiments of the present invention will be described below with reference to the drawings. However, such an embodiment does not limit the technical scope of the present invention. In the drawings, the same or similar elements are denoted by the same reference numerals or reference symbols.

  FIG. 1 is a configuration diagram according to an embodiment of a print system to which the present invention is applied. A print system 100 shown in FIG. 1 is a print system to which the present invention is applied, and includes a host computer 1 and a printer 2. When the print data is transmitted to the printer 2, the language monitor 15 of the host computer 1 stores the image data to be transmitted in the data storage 29 that temporarily stores the image data. An erasing command is transmitted to the printer 2, and then data transmission processing is executed. Thereby, unnecessary data generated at the time of interruption of processing, so-called dust data, can be surely erased.

  The printing system 100 according to the present embodiment is embodied as a system that continuously prints a plurality of labels arranged on roll paper, for example.

  The host computer 1 (printer control device) is a host device of the printer 2 that sends print data to the printer 2 and issues a print request (command), and is configured by a personal computer or the like. Therefore, although not shown, the CPU, RAM, HDD, communication interface, operation device, and the like are provided. In addition, the printer 2 is connected to the printer 2 so that bidirectional communication is possible.

  As shown in FIG. 1, the functional configuration includes an application 11, a driver 12, a status monitor 13, a printer setting tool 14, and a language monitor 15.

  The application 11 is a request source of print processing, and is a part that creates print contents of a printed matter (label or the like), for example. The application 11 transmits print request data representing print contents to the driver 12 in accordance with a user operation of the host computer 1 or the like.

  The driver 12 is a driver for the printer 2, and when print request data is received from the print request source application 11, the driver 12 generates print data in which print contents are expressed by a print command for the printer 2, and the print data To the printer 2.

  The status monitor 13 is a part that informs (displays) the status (situation) of the printer 2 to the user of the printing system 100 as needed. For example, the status monitor 13 transmits a status request command to the printer 2 at predetermined time intervals. The status information of the printer 2 is acquired, and processing for displaying the status information on a display unit (not shown) of the host computer 1 in a predetermined expression is performed. The same status display process is executed when a predetermined operation is performed by the user.

  The printer setting tool 14 is a portion used when the user sets printing parameters (printing conditions, etc.) of the printer 2 and registers fonts, layouts, background images (image data), etc. that can be used in common for each printed matter. It is. The printer setting tool 14 transmits the setting and registration request commands to the printer 2 in accordance with a user operation.

  The language monitor 15 (transmission adjustment unit) is a part that monitors the communication state with the printer 2 and adjusts data transmission to the printer 2. Accordingly, each data transmitted from the driver 12, the status monitor 13 and the printer setting tool 14 to the printer 2 is first received and held by the language monitor 15, and then the language monitor 15 receives the data. Data is transmitted to the printer 2 at a predetermined timing according to a predetermined order. The language monitor 15 of the printing system 100 is characterized by processing when transmitting print data to the printer 2. Specific contents will be described later. The language monitor 15 receives a reply (response) from the printer 2 in response to a request from the host computer 1 and passes the received contents to the request source (the status monitor 13 and the printer setting tool 14 or the like).

  The application 11, the driver 12, the status monitor 13, the printer setting tool 14, and the language monitor 15 are each configured by a program describing each process described above, a CPU that executes the process according to the program, a RAM, and the like.

  The data transmitted from the language monitor 15 to the printer 2 includes print data received from the driver 12, a status request command received from the status monitor 13, and a setting / registration command received from the printer setting tool 14.

  Specifically, commands sent to the printer 2 include the following types of commands. There are four types of commands. First, the “file save command” is a command for saving a file of image (image) data used for print processing in the printer 2 in the printer 2 in advance. Specifically, there is a command for instructing storage (registration) of files such as fonts and character codes in addition to images. The command is issued from the driver 12 and the printer setting tool 14.

  Next, the “print instruction command” is a command for instructing each object in the image to be printed (in the printed matter). On the printer 2 side, print data of each object is generated according to the command. The “print instruction command” includes a command for instructing each object such as a character, a graphic (graphic), and an image (image). The command is issued from the driver 12.

  Next, the “setting command” is a command for setting a printing parameter (printing condition) or the like in the printer 2, and specifically, a command for setting a resolution, a medium (printing medium), or the like. The command is issued from the driver 12 and the printer setting tool 14.

  Finally, the “control command” is a command for the host computer 1 to monitor and control the printer 2 such as a command for making a status request as described above. Specifically, there are commands for status acquisition, version information acquisition, buffer capacity acquisition, and the like. The command is issued from the status monitor 13 or the like.

  In addition, the print data issued at the time of requesting printing of each printed matter includes “file save command”, “print instruction command”, and “setting command” among the above four types of commands.

  Further, due to the difference in processing units in the printer 2, the “print instruction command” and the “setting command” are referred to as first data, and the “file save command” and the “control command” are referred to as second data.

  Further, as described above, it is assumed that the print system 100 performs printing using image (image) data, and the image includes a background image commonly used for each printed matter (for example, a label). There are common images and individual images with different contents for each printed matter. The label is issued by applying an adhesive to the back surface of the label, pasting it on a release paper, and printing on a plurality of label sheets arranged at regular intervals. A background image is common to each label, and a bar code or the like is printed differently for each label. Here, image data of a common image such as a background image and individual images such as a barcode will be referred to as common image data and individual image data, respectively.

  The common image data and the individual image data have the names designated by the host computer 1 by the “file save command” described above, and are used in advance at the place designated by the host computer 1 before using the image data for printing. Remembered. The “file save command” of the individual image data is transmitted to the printer 2 as print data of each printed matter. Further, the print data of each printed matter includes a command for erasing the individual image data at the final part. Therefore, on the printer 2 side, the individual image data used for each printed matter is erased by the print data.

  Next, the printer 2 is, for example, an inkjet line printer that prints labels and the like. As shown in FIG. 1, the printer 2 includes a controller unit 21 and a printing mechanism unit 22. The controller unit 21 controls various parts of the printer 2 and generates print execution data for causing the printing mechanism unit 22 to execute printing based on data received from the host computer 1.

  Although not shown, the controller unit 21 includes a CPU, RAM, ROM, NVRAM, ASIC, SD card, and the like, and has a functional configuration as shown in FIG.

  The transmission / reception unit 23 is a part that controls communication with the host computer 1, and receives data transmitted from the language monitor 15 and transmits response data to the host computer 1.

  The reception buffer 24 is a storage unit that temporarily stores (stores) data from the host computer 1 received by the transmission / reception unit 23 before processing, and includes a RAM or the like. The data stored here is erased (discarded) after being read out by the header analysis unit 25.

  Next, the header analysis unit 25 sequentially reads the data stored in the reception buffer 24 and analyzes the header portion. Specifically, the content (type) of the data is identified from the header portion or the like of the read data, that is, it is determined whether it is one of the four types of commands described above, and the data is the first If it is data, it is stored in the execution buffer 26, and if the data is second data, it is transferred to the second analyzer 28.

  The execution buffer 26 is a storage unit that temporarily stores (stores) the first data before execution of the process, and includes a RAM or the like. The stored data is sequentially read out by the first analysis unit 27 and is erased (discarded) after being read out.

  Next, the first analysis unit 27 is a part that sequentially reads and processes the first data stored in the execution buffer 26. If the read data is a “print instruction command”, it is analyzed to generate print execution data, and the print execution data is stored in the print buffer 31. The first analysis unit 27, when generating the print execution data, the individual image data stored in the data storage 29, the font data stored in the registration data storage unit 30, the layout data, and the common as necessary. Access image data, etc. and use those data.

  Further, if the read data is a “setting command”, the first analysis unit 27 analyzes the content and executes a process according to the analysis result. If it is a registration command for font data, layout data, common image data, etc., those data are stored in a predetermined location of the registration data storage unit 30. If it is a print condition setting command, a setting process according to the instruction is executed.

  The second analysis unit 28 is a part that processes the second data transferred from the header analysis unit 25. If the second data is individual image data, the data is stored in the data storage 29. When the second data is registration data such as common image data, the data is stored in the registration data storage unit 30. If the second data is a status request command, status information is acquired and a response is made to the host computer 1 via the transmission / reception unit 23.

  The data storage 29 is a storage unit that temporarily stores (stores) individual image data, and includes a RAM or the like. As described above, the last part of the print data (print command) of each printed matter (label, etc.) includes a command for deleting (discarding) the individual image data included in the print data. When the command is executed by the first analysis unit 27, the individual image data is deleted from the data storage 29. The stored individual image data is given a name (identification information) determined by the host computer 1. When the first analysis unit 27 uses or deletes the individual image data, the name is used. To do.

  Next, the registered data storage unit 30 is a storage unit for storing (storing) data used in common for each printed matter (label, etc.), and the data is erased even when the printer 2 is powered off, such as NVRAM and SD card. It is composed of storage media that are not. Specifically, the registration data storage unit 30 stores common image data, font data, layout data, and the like.

  The print buffer 31 is a storage unit that temporarily stores (stores) the print execution data generated by the first analysis unit 27, and includes a RAM or the like. Print execution data is sent from the print buffer to the printing mechanism unit 22 in synchronization with the operation of the printing mechanism unit 22, and printing processing on the printing medium is executed.

  Next, the printing mechanism unit 22 executes printing on a print medium (paper or the like) according to an instruction from the controller unit 21 and outputs a printed matter (label or the like). In the case of an inkjet system, the printing mechanism unit 22 includes a head unit including a plurality of nozzles that eject ink, a transport unit that transports a print medium, and the like. Further, the sheet is stored in, for example, a roll shape, and is conveyed from there to a printing position by a conveyance unit.

  In the printer 2 having the configuration described above, when data is received from the host computer 1, the data received via the transmission / reception unit 23 is stored in the reception buffer 24. The data stored in the reception buffer 24 is sequentially read out by the header analysis unit 25, and the header analysis unit 25 analyzes what kind of data the data is.

  If the analysis results in the first data, the header analysis unit 25 transfers the data to the execution buffer 26. If the data is the second data, the header analysis unit 25 transfers the data to the second analysis unit 28. Note that even when an error or the like occurs and the printing process is temporarily stopped (interrupted), the header analysis unit 25 continues the process.

  The data transferred to and stored in the execution buffer 26 is sequentially processed by the first analysis unit 27. If the data is print data, the first analysis unit 27 generates print execution data, and the print execution data Is transferred to the print buffer 31. At that time, processing for setting printing conditions by a “setting command” included in the print data, processing for erasing individual image data in the data storage 29 according to the above-described erasing command, and the like are performed.

  If the data transferred to the second analysis unit 28 is a “control command” such as a status request command, the second analysis unit 28 immediately executes processing for the command. If it is a status request command, the second analysis unit 28 acquires the status information of the printer 2 and returns it to the language monitor 15 of the host computer 1. If the data is a “file save command” of individual image data, the second analysis unit 28 transfers the data to the data storage 29 and stores it. Note that the second analysis unit 28 continues the processing even when an error or the like occurs and the printing processing is temporarily stopped (suspended).

  In the printer 2, even when the data processing is executed as described above and the printing processing is temporarily stopped, the header analysis unit 25 receives the first data from the reception buffer 24 while the execution buffer 26 is full. The second analysis unit 28 continues the process unless it is not read out and the image data larger than the free capacity of the data storage 29 is transferred, so the data is stored in the reception buffer 24 when the printing process is stopped. However, if the execution buffer 26 and the data storage 29 have free space, the corresponding data is transferred from the reception buffer 24 to the execution buffer 26 or the data storage 29, and the reception buffer 24 has the free space. Secured.

  In addition, when all the print data is not received, such as when the print data is canceled by a spooler (not shown) on the host computer 1 side, the individual image data in the final portion of the print data is deleted. Since the command does not reach the printer 2 side, even when the received print command is processed, the individual image data stored in the data storage 29 remains without being erased. Even when all the print commands have been received, the same processing occurs when the print processing is interrupted and the print commands are deleted by the function of the printer 2.

  Further, when the printing process is interrupted due to the spooler cancellation or the like in this manner, the application 11 of the host computer 1 detects it and requests to transmit the print data of the interrupted printing again, so that it is erased. Instead, the same individual image data as the individual image data remaining in the data storage 29 is transmitted to the printer 2 again.

  As described above, the print system 100 is characterized in the process when the language monitor 15 transmits print data, and the specific contents thereof will be described below. FIG. 2 is a flowchart illustrating a processing procedure in the language monitor 15.

  After being activated, the language monitor 15 waits to receive a data transmission request from the driver 12, the status monitor 13, or the printer setting tool 14 (No in step S1 in FIG. 2), and receives the data transmission request (FIG. 2). Yes in step S1), it is determined whether or not the data requested to be transmitted is the “file save command” of the individual image data (step S2 in FIG. 2).

  As a result of the determination, if the data requested to be transmitted is not the “file save command” of the individual image data (No in step S2 in FIG. 2), the process proceeds to step S11.

  On the other hand, as a result of the determination, if the data requested to be transmitted is the “file save command” of the individual image data (Yes in step S2 in FIG. 2), the language monitor 15 stores the individual image stored in the data storage 29. A “control command” requesting data identification information (name) is transmitted to the printer 2.

  When the command is received by the printer 2, as described above, since the command is the second data, the second analysis unit 28 processes it. The second analysis unit 28 acquires identification information (name) of the individual image data stored in the data storage 29 and returns the information to the host computer 1. The language monitor 15 receives the returned information and acquires the identification information (step S3 in FIG. 2).

  Thereafter, the language monitor 15 stores the identification information (name) of the individual image data that has received the transmission request and the identification information acquired from the printer 2, that is, the individual image stored in the data storage 29 (remaining). If the identification information of the data is compared (step S4 in FIG. 2) and the identification information is the same, that is, if both the individual image data are the same (Yes in step S4 in FIG. 2), the language monitor 15 Generates an erase command for the individual image data stored (remaining) in the data storage 29 and transmits it to the printer 2 (step S5 in FIG. 2).

  When a plurality of individual image data is stored in the data storage 29, the language monitor 15 acquires all the identification information and is the same as the identification information (name) of the individual image data that has received the transmission request. If there is any, the erase command is transmitted for the same individual image data.

  The individual image data is usually different for each printed matter (label). In this way, when the individual image data that is the same (named) as the individual image data to be sent remains in the data storage 29, Since the above-described print processing using the individual image data is interrupted and the same print data is transmitted again from the application 11 side, the individual image data remaining in the data storage 29 is unnecessary. An erase command is transmitted as described above.

  The erasure command transmitted to the printer 2 is processed as first data by the printer 2 and is executed by the first analysis unit 27 in the same manner as other commands. That is, the first analysis unit 27 stores the data in the data storage 29. The remaining data is erased.

  Returning to FIG. 2, after the transmission of the erase command (S5), or when there is no identical image in the data storage 29 in step S4 (No in S4), the process proceeds to step S6.

  In step S6, the language monitor 15 transmits a free capacity confirmation command in the data storage 29 to the printer 2 (step S6 in FIG. 2). The free space confirmation command is a command for inquiring about the free space capacity in the data storage 29 where data can be stored.

  In the printer 2, the free space confirmation command is processed as a “control command” by the second analysis unit 28, and the second analysis unit 28 responds to the command. That is, the printer 2 returns information on the free capacity of the data storage 29 to the language monitor 15.

  The language monitor 15 receives the response (step S7 in FIG. 2), and at that time, determines whether the data storage 29 has enough free space to store the received individual image data. (Step S8 in FIG. 2). Specifically, the capacity of the free area of the data storage 29 is ascertained from the response information, and if the capacity is larger than the capacity of the individual image data, it is determined that there is sufficient free capacity. Judge that there is not enough free space.

  As a result of the determination, if there is sufficient free space (Yes in step S8 in FIG. 2), the process proceeds to step S11.

  On the other hand, if there is not enough free space as a result of the above determination (No in step S8 in FIG. 2), the language monitor 15 determines that the received individual image data will not be transmitted at that time, and the error condition is satisfied. If not (No in step S9 in FIG. 2), the process returns to step S6. Thereafter, the language monitor 15 determines that there is sufficient free space (Yes in step S8 in FIG. 2), or steps at predetermined time intervals until an error condition is satisfied (Yes in step S9 in FIG. 2). The processing from S6 is repeatedly executed.

  As described above, since the individual image data stored in the data storage 29 is deleted after use, if the processing is normally executed in the printer 2, the free capacity of the data storage 29 increases with time. . Further, the error condition is a condition for determining that there is some problem (error) in the printer 2. For example, the error condition can be the elapse of a predetermined time or the number of transmissions of a free space confirmation command.

  If the error condition is satisfied (Yes in step S9 in FIG. 2), the language monitor 15 executes an error process (step S10 in FIG. 2), and returns the process to step S1 to wait for the next data. In the error process, the language monitor 15 discards the received data and notifies the transmission source that the data has not been transmitted to the printer 2.

  Returning to step S2, if the received data is not the “file save command” of the individual image data (No in step S2 in FIG. 2), or if the processing is shifted from step S8, the language monitor 15 Sends a command for checking whether or not the execution buffer 26 is available to the printer 2 (step S11 in FIG. 2).

  In the printer 2, the availability check command is processed as a “control command” by the second analysis unit 28, and the second analysis unit 28 responds to the command. In other words, the printer 2 returns information indicating whether there is a free area in which data in the execution buffer 26 can be stored to the language monitor 15.

  The language monitor 15 receives the response (step S12 in FIG. 2), and at that time, determines whether or not there is a free area in the execution buffer 26 where data can be stored (step S13 in FIG. 2).

  If there is no free area as a result of the determination (No in step S13 in FIG. 2), the language monitor 15 determines that the received data is not transmitted at that time, and if the error condition is not satisfied (in FIG. 2). In step S14, the process returns to step S11. Thereafter, the language monitor 15 determines that there is a free area (Yes in step S13 in FIG. 2), or from step S11 at predetermined time intervals until an error condition is satisfied (Yes in step S14 in FIG. 2). Repeat the process.

  As described above, since the command stored in the execution buffer 26 is deleted after use, if the process is normally executed in the printer 2, an empty area is created in the execution buffer 26 over time. The error condition is the same condition as that in step S9.

  If the error condition is satisfied (Yes in step S14 in FIG. 2), the language monitor 15 executes error processing (step S15 in FIG. 2), and returns the process to step S1 to wait for the next data. In the error process, the language monitor 15 discards the received data and notifies the transmission source that the data has not been transmitted to the printer 2.

  Returning to step S13, if there is a free area as a result of the above determination (Yes in step S13 in FIG. 2), the language monitor 15 transmits the received data to the printer 2 (step S16 in FIG. 2). After the data transmission, the process returns to step S1, and the language monitor 15 waits for the next data.

  As described above, the data transmission process by the language monitor 15 is executed.

  As described above, in the print system 100 according to the present embodiment, when the print data is transmitted from the host computer 1, the language monitor 15 stores the individual image data temporarily in the data storage 29 of the printer 2. If there is the same individual image data to be transmitted, and if there is the same individual image data, the data is unnecessary data left by interruption of the printing process. If it is determined that there is, the delete command is transmitted to the printer 2. Thereby, unnecessary image data can be surely erased, the free space of the storage unit can be appropriately secured, and unnecessary printing due to unnecessary data can be prevented. Further, the unnecessary data erasing process can be executed without any human operation.

  In addition, since the process of deleting unnecessary data is executed based on the judgment of the host computer 1, unnecessary data can be deleted even when the printer 2 does not recognize the interruption of the print data.

  Also, as described above, no problem occurs even when the same individual image data is used in the previous normal printing.

  Furthermore, the language monitor 15 checks the free capacity of each storage unit in the printer 2 before sending the print data, and does not send data if there is not enough free space. It is possible to prevent the processing from being interrupted due to a full state. This can also reduce unnecessary data. In particular, it is possible to obtain a great effect by executing the processing for the data storage 29 that stores individual image data having a large size.

  In addition, the present invention is particularly effective in printing labels and the like using image data.

  The present invention is suitable for printing a label having a common image such as a background image commonly used for the label and an individual image having a different content for each label, but can also be applied to printing other than the label. .

  The protection scope of the present invention is not limited to the above-described embodiment, but covers the invention described in the claims and equivalents thereof.

  DESCRIPTION OF SYMBOLS 1 Host computer, 2 Printer, 11 Application, 12 Driver, 13 Status monitor, 14 Printer setting tool, 15 Language monitor, 21 Controller part, 22 Printing mechanism part, 23 Transmission / reception part, 24 Reception buffer, 25 Header analysis part, 26 Execution Buffer, 27 first analysis unit, 28 second analysis unit, 29 data storage, 30 registered data storage unit, 31 print buffer, 100 print system

Claims (8)

A print adjustment unit for transmitting print data including image data used in the printed material to the printer when the print request for the printed material is included ;
Same the transmission adjustment unit, the same image data and the image data included in the print data, if present in the storage unit of the printer, before transmitting the print data, which is present in the storage unit A printer control device that transmits a command to delete the image data to the printer. In claim 1,
The transmission adjustment unit acquires identification information of the image data existing in the storage unit of the printer, and determines whether the same image data exists in the storage unit based on the identification information. Printer control device characterized by the above. In claim 1 or 2,
The storage unit of the printer includes a first storage unit and a second storage unit,
Characterized in that the image data included in the print data sent from the transmission adjustment portion is stored in the first storage unit, other data sent from the transmission adjustment unit is stored in the second storage unit Printer control device. In any one of Claims 1 thru | or 3,
The transmission adjustment unit transmits a free space confirmation command for inquiring about the capacity of the storage unit to the printer, and transmits the print data to the printer after receiving a response to the free space confirmation command. Printer control unit. In any one of Claims 1 thru | or 4,
The printer control apparatus, wherein the print data is data for printing a plurality of labels. A printing system having printers with a control device of the printer,
The control device transmits print data including image data used in the printed material, which includes the image data erasure command, to the printer when the print request is made, It has an adjustment part,
The printer includes a storage unit that stores the image data included in the print data,
Same the transmission adjustment unit, the same image data and the image data included in the print data, if present in the storage unit of the printer, before transmitting the print data, which is present in the storage unit A printing system that transmits a command to delete the image data to the printer. A control method in the control unit for printers,
When the print request is made to the control device, the print data including the image data used in the print product, and the print data including the erase command of the image data in the final part is transmitted to the printer. An adjustment unit is provided,
Same said transmission adjusting unit, the same image data and the image data included in the print data, if present in the storage unit of the printer, before transmitting the print data, which is present in the storage unit A control method for transmitting a command for erasing the image data to the printer. A control program for executing the processing to the control unit of the printers,
A transmission step of transmitting print data including image data used in the printed material when the print request is made to the printer to the printer.
Prior to said transmitting step, command the same image data and the image data included in the print data, if present in the storage unit of the printer, to erase the same of the image data existing in the storage unit A control program for causing the control device to execute an erasing step of transmitting a message to the printer.

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