WO2018166388A1 - 防止页面重复打印的方法、装置及打印系统 - Google Patents

防止页面重复打印的方法、装置及打印系统 Download PDF

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Publication number
WO2018166388A1
WO2018166388A1 PCT/CN2018/078305 CN2018078305W WO2018166388A1 WO 2018166388 A1 WO2018166388 A1 WO 2018166388A1 CN 2018078305 W CN2018078305 W CN 2018078305W WO 2018166388 A1 WO2018166388 A1 WO 2018166388A1
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WIPO (PCT)
Prior art keywords
printed
page
identifier
document
printer
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PCT/CN2018/078305
Other languages
English (en)
French (fr)
Inventor
王超
张春光
解丝艳
王春涛
Original Assignee
山东新北洋信息技术股份有限公司
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Publication of WO2018166388A1 publication Critical patent/WO2018166388A1/zh

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    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
    • G06F3/12—Digital output to print unit, e.g. line printer, chain printer
    • G06F3/1201—Dedicated interfaces to print systems
    • G06F3/1202—Dedicated interfaces to print systems specifically adapted to achieve a particular effect
    • G06F3/121—Facilitating exception or error detection and recovery, e.g. fault, media or consumables depleted
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
    • G06F3/12—Digital output to print unit, e.g. line printer, chain printer
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
    • G06F3/12—Digital output to print unit, e.g. line printer, chain printer
    • G06F3/1201—Dedicated interfaces to print systems
    • G06F3/1223—Dedicated interfaces to print systems specifically adapted to use a particular technique
    • G06F3/1236—Connection management
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
    • G06F3/12—Digital output to print unit, e.g. line printer, chain printer
    • G06F3/1201—Dedicated interfaces to print systems
    • G06F3/1278—Dedicated interfaces to print systems specifically adapted to adopt a particular infrastructure
    • G06F3/1279—Controller construction, e.g. aspects of the interface hardware

Definitions

  • the present disclosure relates to the field of printing technology, for example, to a method, apparatus, and printing system for preventing repeated printing of pages.
  • the printing system usually includes a print requesting device (such as a personal computer) and a printer, and the two establish a communication connection for data transmission through a communication interface, a communication cable, or wireless communication.
  • a general-purpose application such as Microsoft's office editing software
  • a printer driver are installed on the print requesting device, and the application generates a graphic data and then calls the driver to cause the driver to generate print job data (hereinafter referred to as job data).
  • job data includes a print command and print data that can be recognized by the printer, the print request device transmits the job data to the printer, and the printer performs the printing of the job data after receiving the job data.
  • the driver of the printer realizes the sending of the job data by calling the interface function encapsulated by the Windows operating system, and the communication requesting device and the printer communicate through some specific interfaces. For example, when communicating via a Universal Serial Bus (USB) interface or an Ethernet interface, for a document containing a plurality of pages, if the print requesting device sends the job data of the document to the printer, When the driver detects that the communication connection between the print requesting device and the printer is interrupted, the job data is stopped, the printer can only print the received job data, and the driver resends when the driver detects that the print requesting device establishes a communication connection with the printer again.
  • USB Universal Serial Bus
  • the printer receives the job data sent by the driver and reprints all the pages of the entire document, which causes the printed page before the communication connection between the printer and the print request device is interrupted to be heavy. Printing, resulting in a waste of paper.
  • the related art printer has a problem of repeatedly printing a document page when the communication connection between the printer and the print requesting device is resumed again after the communication connection with the print requesting device is interrupted.
  • the present disclosure provides a method, apparatus, and printing system for preventing page repeat printing to solve the problem that the related art printer resumes the communication connection between the printer and the print requesting device after the communication connection with the print requesting device is interrupted. There is a problem with duplicate printed document pages.
  • a method for preventing page repeat printing comprising: receiving a document to be printed, wherein the document to be printed includes at least one page, each of the pages having a unique identifier; determining a preset in the at least one page The page is a page to be printed, and it is determined whether the page to be printed is printed according to the identifier of the page to be printed and the identifier of the pre-stored printed page; if the page to be printed is printed, the printing is discarded. The page to be printed.
  • determining, according to the identifier of the page to be printed and the identifier of the pre-stored printed page, whether the page to be printed is printed includes: determining whether the identifier of the printed page is An identifier containing the page to be printed; if included, determining that the page to be printed is printed.
  • the identifier of the printed page includes an identifier of a previously printed page
  • the page to be printed is determined according to the identifier of the page to be printed and the identifier of the pre-stored printed page. Whether it is printed or not includes: determining whether the identifier of the page to be printed and the identifier of the previously printed page satisfy a preset rule; if yes, determining that the page to be printed is printed.
  • the method further includes: if the page to be printed is not printed, printing the page to be printed, and storing an identifier of the page to be printed to update an identifier of the printed page.
  • the preset rule includes: the identifier of the page to be printed is less than or equal to the identifier of the previously printed page.
  • the preset rule includes: the identifier of the page to be printed is greater than or equal to the identifier of the previously printed page.
  • An apparatus for preventing page repeat printing comprising: a data receiving module, configured to receive a document to be printed, wherein the document to be printed includes at least one page, each of the pages has a unique identifier; and a print judging module, Setting to determine that the preset page in the at least one page is a page to be printed, determining, according to the identifier of the page to be printed and the identifier of the pre-stored printed page, whether the page to be printed is printed; a printing module configured to discard the page to be printed if the page to be printed is printed.
  • the print determining module includes: a first determining unit, configured to determine whether an identifier of the page to be printed is included in an identifier of the printed page; and the first determining unit is configured to be A judging unit determines that the identifier of the page to be printed is included in the identifier of the printed page, and determines that the page to be printed is printed.
  • the identifier of the printed page includes an identifier of a previously printed page
  • the print determining module includes: a second determining unit, configured to determine an identifier of the page to be printed and the previous time Whether the identifier of the printed page satisfies a preset rule; the second determining unit is configured to: if the second determining unit determines that the identifier of the page to be printed and the identifier of the previously printed page satisfy a preset rule And determining that the page to be printed is printed.
  • the method further includes: determining a printing module, configured to print the to-be-printed page if the to-be-printed page is not printed, and store an identifier of the to-be-printed page to update the printed page Identifier.
  • the preset rule includes: the identifier of the page to be printed is less than or equal to the identifier of the previously printed page.
  • the preset rule includes: the identifier of the page to be printed is greater than or equal to the identifier of the previously printed page.
  • a method of preventing page repeat printing comprising: a print requesting device transmitting a document to be printed to a printer, wherein the document to be printed includes at least one page, each of the pages having a unique identifier; Receiving, by the printer, the document to be printed, determining that the preset page in the at least one page is a page to be printed; the printer determining, according to the identifier of the page to be printed and the identifier of the pre-stored printed page, Whether the page to be printed is printed; if the page to be printed is printed, the printer discards printing the page to be printed.
  • a printing system comprising a print requesting device and a printer; the print requesting device being arranged to send a document to be printed to the printer, wherein the document to be printed comprises at least one page, each of the pages having a unique An identifier, the printer is configured to receive the document to be printed, and determine a preset page in the at least one page as a page to be printed, according to an identifier of the page to be printed and an identifier of a pre-stored printed page And determining whether the page to be printed is printed, and if the page to be printed is printed, discarding the page to be printed.
  • the present disclosure also provides a computer readable storage medium storing computer executable instructions, the computer executable instructions being set to any of the above methods for preventing page repeat printing.
  • the method, apparatus, and printing system for preventing page repeat printing of the present disclosure the printer of the related art is present when the communication connection between the printer and the print requesting device is resumed again after the communication connection with the print requesting device is interrupted The problem of repeatedly printing a document page.
  • FIG. 1 is a block diagram of a printer provided by an embodiment
  • FIG. 2 is a schematic flow chart of a method for preventing page repeated printing according to an embodiment
  • FIG. 3 is a schematic flowchart of a method for preventing page repeated printing according to another embodiment
  • FIG. 4 is a block diagram of an apparatus for preventing page repeated printing according to an embodiment
  • Figure 5 is a block diagram of a printing system provided by an embodiment
  • FIG. 6 is a schematic flowchart of a method for preventing page repeated printing according to another embodiment.
  • FIG. 7 is a block diagram of an apparatus for preventing page repeat printing according to another embodiment.
  • the embodiment provides a A method, apparatus, and printing system for preventing repeated printing of a page will be described below by way of embodiments.
  • the embodiment provides a method for preventing page repeated printing, which can be executed by a printer, by which the printer can recognize the printed page and the unprinted page after receiving the document to be printed, and Discard printing of pages that have already been printed, preventing the page from being printed repeatedly.
  • the printer 2 includes a controller 21, a communication device 22, a printing device 23, a random access memory (RAM) 24, and a flash memory (also referred to as a flash memory) 25.
  • a controller 21 a communication device 22 a printer provided to receive print job data (hereinafter referred to as job data) of a document transmitted by a print requesting device and perform document printing.
  • the printer 2 includes a controller 21, a communication device 22, a printing device 23, a random access memory (RAM) 24, and a flash memory (also referred to as a flash memory) 25.
  • RAM random access memory
  • flash memory also referred to as a flash memory
  • the controller 21 is arranged to control the communication device 22, the printing device 23, the RAM 24 and the flash memory 25 to perform work and perform calculation and processing of data, for example, the control communication device 22 performs data transmission between the printer 2 and the print requesting device, The printing device 23 is controlled to perform document printing and the like.
  • the communication device 22 is arranged to perform data transfer between the printer 2 and the print requesting device, for example, the communication device 22 receives job data of a document sent by the print requesting device.
  • the printing device 23 is arranged to perform document printing, and the printing device 23 comprises a print head 231, a paper pressing member 232 and a conveying mechanism 233, wherein the printing head 231 is electrically connected to the controller 21, and is arranged to print the document on the printing paper; 232 is disposed opposite the print head 231 and is configured to support the printing paper; the transport mechanism 233 is configured to transport the printing paper to cause the print head 231 to print the document on the set length of printing paper.
  • the printing device 23 may be a thermal printing mechanism, a thermal transfer printing mechanism, an inkjet printing mechanism, or a stylus printing mechanism, etc., in this embodiment, The printing device 23 is a thermal transfer printing mechanism.
  • the RAM 24 includes a receive buffer 241, a print buffer 242, and a temporary buffer 243.
  • the receive buffer 241 is configured to store job data received by the communication device 22;
  • the print buffer 242 is configured to store dot matrix data to be sent to the printhead 231;
  • the temporary buffer 243 is configured to store data generated during program execution And variables.
  • the flash memory 25 is set to store the control program of the printer 2, and the flash memory 25 is also arranged to store an identifier of the printed page, wherein each page of a document has a unique identifier.
  • the flash memory 25 is set to store the identifier of the recently printed set number of pages.
  • the flash memory 25 is set to store the identifiers of all printed pages of a previously printed document.
  • the flash memory 25 is arranged to store an identifier of a page printed last time.
  • the printer may also include a non-volatile memory, such as at least one magnetic disk storage device, flash memory device, or other non-transitory solid state storage device. It can be used to store the operating system and the applications required for at least one function, or to store data created by the use of the printer, and so on.
  • a non-volatile memory such as at least one magnetic disk storage device, flash memory device, or other non-transitory solid state storage device. It can be used to store the operating system and the applications required for at least one function, or to store data created by the use of the printer, and so on.
  • FIG. 2 is a schematic flowchart of a method for preventing page repeated printing according to an embodiment.
  • the method can be executed by a printer provided by an embodiment of the present invention.
  • the printer uses the method to process each page of a printed document, as shown in the figure.
  • the method includes steps 210-230.
  • step 210 a document to be printed is received, wherein the document to be printed includes at least one page, each page having a unique identifier.
  • the printer receives the document to be printed in the form of job data of the document to be printed, wherein the job data of the document to be printed includes job data of at least one page, and each page has a unique identifier, each page The identifier can be generated by the print requesting device.
  • the controller 21 controls the communication device 22 to receive the job data of the document to be printed transmitted by the print requesting device, and stores the job data of the document to be printed in the receiving buffer 241 of the RAM 24.
  • the job data of the document to be printed includes job data of at least one page, each page has a unique identifier, and the identifier is included in the job data of the document to be printed, for example, the job data of one page includes sequential A printer setting instruction, a printer control instruction, a page identification instruction, a print image instruction, a print data, and a start print instruction, wherein the page identification instruction includes an instruction header and an identifier.
  • step 220 it is determined that the preset page in the at least one page of the document to be printed is the page to be printed, and it is determined whether the page to be printed is printed according to the identifier of the page to be printed and the identifier of the pre-stored printed page.
  • the printer determines that the preset page in the at least one page of the document to be printed is a page to be printed.
  • the printer may sequentially determine each page in the document to be printed as a page to be printed according to the order in which the pages are received, for example, a printer.
  • the page to be printed is first determined, the page received first is determined as the page to be printed.
  • the printer After determining the page to be printed, acquires an identifier of the page to be printed, and determines whether the page to be printed is printed according to the identifier of the page to be printed and the identifier of the pre-stored printed page.
  • the identifier of the printed page pre-stored by the printer is the identifier of the recently printed set number of pages, or the identifier of all printed pages of a previously printed document.
  • the printer determines whether the page to be printed is printed according to the identifier of the page to be printed and the identifier of the pre-stored printed page, and may include: determining whether the identifier of the printed page includes the to-be-printed The identifier of the page, if included, determines that the page to be printed has been printed. If not, it is determined that the page to be printed has not been printed.
  • the identifier of the printed page pre-stored by the printer is one, which is an identifier of the previously printed page.
  • the printer according to the identifier of the page to be printed and the pre-stored printed page.
  • the identifier of the page to be printed may be determined whether the identifier of the page to be printed and the identifier of the previously printed page meet the preset rule. If yes, it is determined that the page to be printed is printed. If not, make sure the page to be printed has not been printed.
  • the identifier of each page may be generated by the print requesting device, and the identifier of each page is in a digital form.
  • the preset rule may be: The identifier of the printed page is less than or equal to the identifier of the previously printed page. If it is determined that the identifier of the page to be printed is less than or equal to the identifier of the previously printed page, the page to be printed is printed; when the print requesting device is in accordance with the number
  • the preset rule may be that the identifier of the page to be printed is greater than or equal to the identifier of the previously printed page, and if the identifier of the page to be printed is determined to be greater than or equal to the page of the previous print. The identifier indicates that the page to be printed has been printed.
  • the controller 21 parses the job data of the document to be printed stored in the receiving buffer 241, and determines the page to be printed from the document to be printed in a preset order. For example, the controller 21 follows the document to be printed. The order in which the pages are received sequentially determines each page in the document to be printed as a page to be printed. After determining the page to be printed, the controller 21 parses the job data of the document to be printed, and obtains an identifier of the page to be printed, and the identifier of the page to be printed is included in the job data of the document to be printed. The controller 21 determines whether the page to be printed has been printed, based on the identifier of the page to be printed and the stored identifier of the printed page.
  • the controller 21 determines whether the page to be printed has been printed according to whether the stored identifier of the printed page contains an identifier of the page to be printed. For example, when the flash memory 25 stores the identifier of the recently printed set number of pages, or when the flash memory 25 stores the identifiers of all the printed pages of the previously printed one document, the controller 21 sequentially comparing whether each identifier stored in the flash memory 25 is consistent with the identifier of the page to be printed.
  • the controller 21 determines whether the page to be printed has been printed according to the size relationship of the identifier of the page to be printed and the identifier of the stored printed page.
  • the identifier of the page is in a digital form, and the identifier of each page sequentially printed by the printer 2 is generated by the print requesting device in an increasing or decreasing manner, and the flash memory 25 stores the identifier of a page printed last time.
  • the controller 21 compares the size relationship between the identifier of the page to be printed and the identifier of the previously printed page, and determines whether the page to be printed has been printed based on the comparison result.
  • the controller 21 compares the size relationship between the identifier of the page to be printed and the identifier of the previously printed page, when the identifier of the page to be printed is smaller than Or equal to the identifier of the previously printed page, determining that the page to be printed has been printed, and determining that the page to be printed has not been printed when the identifier of the page to be printed is greater than the identifier of the previously printed page;
  • the controller 21 compares the size relationship between the identifier of the page to be printed and the identifier of the previously printed page, when the identifier of the page to be printed is greater than or When it is equal to the identifier of the previously printed page, it is determined that the page to be printed has been printed, and when the identifier of the page to be printed is smaller than the identifier of the previously printed page, it is
  • the driver of the print requesting device assigns a unique identifier to each page when generating the job data of the document, so that the printer 2 can receive the job data according to the identifier of the page to be printed and The stored identifier of the printed page determines whether the page to be printed has been printed.
  • the print requesting device first generates job data of the document, and then sends the job data to the printer, stops sending the job data when the print requesting device detects the communication interruption, and generates the previous data when the print requesting device detects the communication recovery.
  • the job data of the document is repeatedly sent to the printer, and no matter how many times the communication interruption between the print requesting device and the printer is resumed, the print requesting device simply repeats the previously generated document data, so the print requesting device assigns only one identifier to each page.
  • the printer 2 can determine whether the page to be printed has been printed according to the identifier of the page to be printed and the stored identifier of the printed page.
  • the print requesting device randomly generates an identifier of the page
  • the print requesting device is capable of generating an identifier of the page in an increasing or decreasing manner, and the page identifier is in digital form.
  • step 230 if the page to be printed is printed, the page to be printed is discarded.
  • the printer determines that the page to be printed has been printed, the page to be printed is discarded.
  • the controller 21 determines that the page to be printed is printed, the page to be printed is discarded, and the next page to be printed is re-determined in the job data of the document to be printed, and the next to be printed is determined. Whether the page has been printed.
  • the method for preventing page repeat printing of the embodiment receiving a document to be printed, determining a page to be printed from the document to be printed, determining whether the page to be printed is determined according to an identifier of the page to be printed and an identifier of the pre-stored printed page Printed, if the page to be printed is printed, discard the page to be printed.
  • the printer determines whether the page is for each page received.
  • the method in this embodiment further includes: if it is determined that the page to be printed has not been printed, printing the page to be printed, and storing an identifier of the page to be printed to update the identifier of the printed page.
  • the page to be printed is printed, and the identifier of the page to be printed is stored to update the identifier of the printed page, and the identifier of the page to be printed may be stored in the flash memory 25 as Print the identifier of the page.
  • the control printing device 23 prints the page to be printed on the printing paper, including: the controller 21 parses the job data of the page to be printed, and generates The dot matrix data of the page is printed, and the dot matrix data is sequentially sent to the print head 231, and the print head 231 is controlled to print at least one of the corresponding text and graphics on the printing paper.
  • the controller 21 controls the conveying mechanism. 233 drives the paper to move, thereby completing the printing of the page to be printed.
  • the controller 21 stores the identifier of the page to be printed as the identifier of the printed page into the flash memory 25, so that the printer 2 can proceed according to the next one while processing the next page to be printed.
  • the identifier of the printed page and the stored identifier of the printed page determine whether the next page to be printed has been printed.
  • the controller 21 deletes the first stored identifier and stores the identifier of the page to be printed into the flash memory. 25 in.
  • the controller 21 determines whether the page corresponding to the identifier of the stored printed page belongs to the same document if the page to be printed belongs to the same document, if it is to be printed If the page corresponding to the identifier of the stored printed page belongs to the same document, the identifier of the page to be printed is additionally stored in the flash memory 25, if the page corresponding to the identifier of the stored printed page is not printed.
  • the controller 21 When belonging to the same document, the controller 21 first clears all identifiers stored in the flash memory 25, and then stores the identifier of the page to be printed into the flash memory 25, wherein the controller 21 stores and stores the identifier according to the page to be printed. Determining the relationship of the identifier of the printed page, determining whether the page corresponding to the identifier of the stored printed page belongs to the same document, for example, the identifier of a page includes two parts: "document number" and "page number”. The "document number” is unique, and the controller 21 is based on the "document number" of the identifier of the page to be printed.
  • the controller 21 overwrites the identifier stored in the flash memory 25 with the identifier of the page to be printed.
  • FIG. 3 is a schematic flowchart of a method for preventing page repeated printing according to another embodiment. As shown in FIG. 3, the method may be performed by the above printer, and includes steps 310-360.
  • step 310 a document to be printed is received.
  • the controller 21 controls the communication device 22 to receive the job data of the document to be printed transmitted by the print requesting device, and stores the job data of the document in the receiving buffer 241 of the RAM 24.
  • step 320 a page is determined from the received document and an identifier for the page is obtained.
  • the controller 21 analyzes the job data in the reception buffer 241, and determines one page based on the order of reception of the job data of the plurality of pages included in the job data.
  • the Nth received page may be determined and an identifier of the page may be obtained, where N is a positive integer less than or equal to the total number of pages included in the job data. For example, it can be determined that the first received page.
  • the identifier of the page is located in the job data of the document.
  • step 330 it is determined whether the page has been printed based on the identifier of the page and the stored identifier of the printed page.
  • the controller 21 determines whether the page has been printed according to the obtained identifier of the page and the identifier of the stored printed page.
  • the controller 21 can determine whether the page has been printed according to the method described in step 220. I will not repeat them here.
  • step 340 is performed, and when the controller 21 determines that the page has not been printed, step 350 is performed.
  • step 340 the page is discarded.
  • the controller 21 determines that the page has been printed, the job data of the page in the receiving buffer 241 and the identifier of the page are cleared, so that the printer does not perform printing of the page.
  • step 350 the page is printed and the identifier of the page is stored after the end of printing.
  • the printing device 23 is controlled to print the page on the printing paper, and the identifier of the page is stored in the flash memory 25 as the identifier of the printed page after the printing is completed.
  • step 360 it is determined if the page is the last page in the document.
  • the controller 21 determines whether the page is the last page in the document.
  • the controller 21 determines whether the job data of the page has job data of other pages after the job data of the page is received. For example, the controller 21 reads the job data following the job data of the page in the received job data, and if the job data can be read, determines that the page is not the last page of the document, if no Job data determines that the page is the last page of the document. If the page is not the last page of the document, return to step 320. If the page is the last page of the document, the process ends.
  • the method for preventing page repeat printing in this embodiment after receiving a document, determines a page and sequentially determines from the page whether the page in the document has been printed, and when a page has been printed, cancels printing. Page, when a page has not been printed, print the page. Therefore, with the method of the present embodiment, after the communication connection with the print requesting device is interrupted, when the communication connection between the printer and the print requesting device is resumed again, the printed page is not caused to be printed before the communication connection is interrupted. Repeated printing can effectively solve the problem of repeatedly printing a document page when the communication connection between the printer and the print requesting device is resumed after the communication connection between the printer and the print requesting device is interrupted in the related art.
  • FIG. 4 is a block diagram of an apparatus for preventing page repeat printing according to an embodiment. As shown in FIG. 4, the apparatus includes:
  • the data receiving module 41 is configured to receive a document to be printed, wherein the document to be printed includes at least one page, each page having a unique identifier;
  • the print determining module 42 is configured to determine that the preset page in the at least one page of the document to be printed is the page to be printed, and determine whether the page to be printed is printed according to the identifier of the page to be printed and the identifier of the pre-stored printed page.
  • the print module 43 is discarded, and if the page to be printed is printed, the page to be printed is discarded.
  • the print determination module includes: a first determining unit, configured to determine whether an identifier of the page to be printed includes an identifier of the page to be printed; and the first determining unit is configured to determine that the printed page is determined by the first determining unit The identifier contains the identifier of the page to be printed, and it is determined that the page to be printed is printed.
  • the identifier of the printed page includes an identifier of the previously printed page
  • the print determining module includes: a second determining unit configured to determine an identifier of the page to be printed and an identifier of the previously printed page Whether the preset rule is satisfied; the second determining unit is configured to determine that the page to be printed is printed if the second determining unit determines that the identifier of the page to be printed and the identifier of the previously printed page satisfy the preset rule.
  • the preset rule includes that the identifier of the page to be printed is less than or equal to the identifier of the previously printed page.
  • the preset rule includes: the identifier of the page to be printed is greater than or equal to the identifier of the previously printed page.
  • the apparatus in this embodiment further includes determining a printing module configured to print the page to be printed if the page to be printed has not been printed, and store an identifier of the page to be printed to update the identifier of the printed page.
  • the above-described means for preventing page repeat printing is part of the controller 21 of the printer 2 shown in FIG.
  • an apparatus for preventing page repeat printing includes a processor 700, a memory 710, a communication interface 720, and a bus 730.
  • the processor 700, the memory 710, and the communication interface 720 can complete communication with each other via the bus 730.
  • Communication interface 720 can be configured for information transfer.
  • the processor 700 is arranged to execute the logic instructions stored in the memory 710 and implement the above-described method of preventing page repeat printing.
  • the memory 710 may include a storage program area and a storage data area, and the storage program area may store an operating system and an application required for at least one function.
  • the storage data area can store data and the like created according to the use of the cash machine.
  • the memory 710 may include, for example, a volatile memory of a random access memory, and may also include a nonvolatile memory. For example, at least one disk storage device, flash memory device, or other non-transitory solid state storage device.
  • the above-described means for preventing page repeat printing is disposed in the printer.
  • the device for preventing page repeat printing of the embodiment receives the document to be printed, determines a page to be printed in the document to be printed, and determines whether the page to be printed is determined according to the identifier of the page to be printed and the identifier of the pre-stored printed page. Printed, if the page to be printed is printed, discard the page to be printed. With the apparatus of the embodiment, after the communication connection with the print requesting device is interrupted, when the communication connection between the printer and the print requesting device is resumed again, the printer determines whether the page is for each page received.
  • FIG. 5 is a block diagram of a printing system according to an embodiment.
  • the system includes a printing requesting device 1 and a method and an apparatus for preventing page repeat printing.
  • the printer 2 described above is capable of performing the above-described method of preventing page repeat printing.
  • the print requesting device 1 and the printer 2 can establish a communication connection via USB or Ethernet or the like.
  • the print requesting device 1 may be a terminal device such as a computer, such as a personal computer, a smart phone, a tablet, an e-book reader, a laptop portable computer, or a car-mounted computer.
  • the print request device 1 is installed with an operating system, an application, and a driver of the printer 2.
  • the application calls the driver of the printer 2, and the driver of the printer 2 generates a print to be printed.
  • the job data of the document wherein the job data contains print commands and print data that can be recognized by the printer 2, and the print requesting device 1 transmits the job data of the document to be printed to the printer 2.
  • the print requesting device 1 is arranged to send a document to be printed to the printer 2, wherein the document to be printed includes at least one page, each page having a unique identifier.
  • the print requesting device 1 determines a document to be printed according to a print instruction of the user, and then generates job data of the document to be printed, and the print requesting device 1 is each page in the document to be printed when generating job data of the document to be printed A unique identifier is assigned, and the print requesting device 1 transmits the job data of the document to be printed to the printer 2 after generating the job data of the document to be printed.
  • the print request device When the print request device detects that the communication is interrupted, the transmission of the job data is stopped, and when the print requesting device 1 detects the communication recovery, the job data of the document to be printed is repeatedly transmitted to the printer regardless of the print request device 1 and the printer 2 How many times the communication interruption is resumed, the print requesting device 1 simply repeats the job data of the document to be printed, which is equivalent to the repeated transmission mechanism of the complete data packet.
  • the printer 2 is configured to receive a document to be printed, determine a preset page in at least one page of the document to be printed as a page to be printed, and determine whether the page to be printed is determined according to an identifier of the page to be printed and an identifier of the pre-stored printed page. Printed, if the page to be printed is printed, the page to be printed is discarded.
  • the printer 2 in this embodiment can perform the above-mentioned method for preventing page repeat printing
  • the system provided in this embodiment can refer to the description of the above method, and details are not described herein again.
  • the printer judges the page for each page received when the communication connection between the printer and the print requesting device is resumed again. Whether it has been printed, if it is printed, the printing is abandoned, so that the printed page is printed repeatedly before the communication connection is interrupted, effectively solving the problem that the printer in the related art is restored after the communication connection with the print requesting device is interrupted. There is a problem of repeatedly printing a document page when the printer is connected to the print requesting device.
  • FIG. 6 is a schematic flowchart of a method for preventing repeated printing of a page according to another embodiment.
  • the printing requesting device is a figure.
  • the printer is the printer 2 in FIG. 5, as shown in FIG. 6, the flow includes steps 410-440.
  • step 410 the print requesting device sends a document to be printed to the printer, wherein the document to be printed includes at least one page, each page having a unique identifier.
  • the print requesting device 1 determines a document to be printed according to a print instruction of the user, and then generates job data of the document to be printed, and the print requesting device 1 is each page in the document to be printed when generating job data of the document to be printed A unique identifier is assigned, and the print requesting device 1 transmits the job data of the document to be printed to the printer 2 after generating the job data of the document to be printed.
  • the print request device When the print request device detects that the communication is interrupted, the transmission of the job data is stopped, and when the print requesting device 1 detects the communication recovery, the job data of the document to be printed is repeatedly transmitted to the printer regardless of the print request device 1 and the printer 2 How many times the communication interruption is resumed, the print requesting device 1 simply repeats the job data of the document to be printed, which is equivalent to the repeated transmission mechanism of the complete data packet.
  • step 420 the printer receives the document to be printed, and determines that the preset page in at least one page of the document to be printed is the page to be printed.
  • step 430 the printer determines whether the page to be printed has been printed, based on the identifier of the page to be printed and the identifier of the pre-stored printed page.
  • step 440 if the page to be printed is printed, the printer discards the page to be printed.
  • the printer for each page received, It is judged whether the page has been printed or not. If it is printed, the printing is discarded, so that the printed page is repeatedly printed before the communication connection is interrupted, which effectively solves the interruption of the communication connection between the printer and the print requesting device in the related art. Then, when the communication connection between the printer and the print requesting device is resumed again, there is a problem of repeatedly printing the document page.
  • the embodiment further provides a computer readable storage medium storing computer executable instructions, the computer executable instructions being set to any of the above methods for preventing page repeat printing.
  • the device for preventing page repeated printing provided by this embodiment may be specific hardware on the device or software or firmware installed on the device.
  • the implementation principle and the technical effects of the device provided in this embodiment are the same as those in the foregoing method embodiment.
  • a person skilled in the art can clearly understand that, for the convenience and brevity of the description, the working processes of the system, the device and the unit described above can refer to the corresponding processes in the foregoing method embodiments, and details are not described herein again.
  • the functions may be stored in a computer readable storage medium if implemented in the form of a software functional unit and sold or used as a standalone product. Based on such understanding, the technical solution of the embodiment or the part contributing to the related art or the part of the technical solution may be embodied in the form of a software product stored in a storage medium, including The instructions are used to cause a computer device (which may be a personal computer, server, or network device, etc.) to perform all or part of the steps of the methods described in various embodiments of the present invention.
  • the foregoing storage medium includes: a U disk, a mobile hard disk, a read-only memory (ROM), a random access memory (RAM), a magnetic disk, or an optical disk, and the like, which can store program codes. .
  • the method for preventing page repeated printing of the present disclosure solves the repeated printing that exists when the communication connection between the printer and the print requesting device is resumed again after the communication connection between the printer and the print requesting device is interrupted in the related art.
  • the problem with the documentation page is solved.

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Abstract

一种防止页面重复打印的方法，包括：接收待打印文档，其中，所述待打印文档包括至少一个页面，每个所述页面均具有唯一的标识符；确定所述至少一个页面中的预设页面为待打印页面，根据所述待打印页面的标识符和预先存储的已打印页面的标识符，判断所述待打印页面是否被打印过；以及若所述待打印页面被打印过，则放弃打印所述待打印页面。

Description

防止页面重复打印的方法、装置及打印系统 技术领域
本公开涉及打印技术领域，例如涉及一种防止页面重复打印的方法、装置及打印系统。
背景技术
打印系统中通常包括打印请求设备(比如个人计算机)和打印机，二者通过通信接口、通信线缆或无线通信等方式建立通信连接以进行数据传输。通常，在打印请求设备上安装通用应用程序(比如微软公司的office编辑软件)和打印机的驱动程序，应用程序生成图形数据后调用驱动程序，使驱动程序生成打印作业数据(以下简称作业数据)，其中，作业数据包含可被打印机识别的打印命令和打印数据，打印请求设备将作业数据发送到打印机，打印机接收到作业数据后执行作业数据的打印。
相关技术中，当打印请求设备上安装的操作系统为windows操作系统时，打印机的驱动程序通过调用windows操作系统封装的接口函数实现作业数据的发送，当打印请求设备和打印机通过一些特定接口进行通信时，比如，通过通用串行总线(Universal Serial Bus，USB)接口或者以太网接口进行通信时，对于一个包含多个页面的文档，如果打印请求设备向打印机发送该文档的作业数据的过程中，驱动程序检测到打印请求设备与打印机之间的通信连接中断，则停止发送作业数据，打印机只能打印接收到的作业数据，当驱动程序检测到打印请求设备与打印机再次建立通信连接时，重新发送包含该文档全部页面的作业数据，打印机接收到驱动程序发送的作业数据后重新打印整个文档的全部页面，这就造成打印机与打印请求设备之间的通信连接中断前已打印的页面会被重复打印，从而造成纸张的浪费。
参见上述，相关技术的打印机在与打印请求设备之间的通信连接中断后，当再次恢复打印机与打印请求设备之间的通信连接时，存在重复打印文档页面的问题。
发明内容
本公开提供一种防止页面重复打印的方法、装置及打印系统，以解决相关 技术的打印机在与打印请求设备之间的通信连接中断后，当再次恢复打印机与打印请求设备之间的通信连接时，所存在的重复打印文档页面的问题。
一种防止页面重复打印的方法，包括：接收待打印文档，其中，所述待打印文档包括至少一个页面，每个所述页面均具有唯一的标识符；确定所述至少一个页面中的预设页面为待打印页面，根据所述待打印页面的标识符和预先存储的已打印页面的标识符，判断所述待打印页面是否被打印过；若所述待打印页面被打印过，则放弃打印所述待打印页面。
可选地，所述根据所述待打印页面的标识符和预先存储的已打印页面的标识符，判断所述待打印页面是否被打印过，包括：判断所述已打印页面的标识符中是否包含所述待打印页面的标识符；若包含，则确定所述待打印页面被打印过。
可选地，所述已打印页面的标识符包括前次打印的页面的标识符，所述根据所述待打印页面的标识符和预先存储的已打印页面的标识符，判断所述待打印页面是否被打印过，包括：判断所述待打印页面的标识符与所述前次打印的页面的标识符是否满足预设规则；若满足，则确定所述待打印页面被打印过。
可选地，所述方法还包括：若所述待打印页面没有被打印过，则打印所述待打印页面，并存储所述待打印页面的标识符以更新所述已打印页面的标识符。
可选地，当所述页面的标识符是按照数字递增规则生成时，所述预设规则包括：所述待打印页面的标识符小于或等于前次打印的页面的标识符。
可选地，当所述页面的标识符是按照数字递减规则生成时，所述预设规则包括：所述待打印页面的标识符大于或等于前次打印的页面的标识符。
一种防止页面重复打印的装置，包括：数据接收模块，设置为接收待打印文档，其中，所述待打印文档包括至少一个页面，每个所述页面均具有唯一的标识符；打印判断模块，设置为确定所述至少一个页面中的预设页面为待打印页面，根据所述待打印页面的标识符和预先存储的已打印页面的标识符，判断所述待打印页面是否被打印过；放弃打印模块，设置为若所述待打印页面被打印过，则放弃打印所述待打印页面。
可选地，所述打印判断模块包括：第一判断单元，设置为判断所述已打印页面的标识符中是否包含所述待打印页面的标识符；第一确定单元，设置为若所述第一判断单元判定所述已打印页面的标识符中包含所述待打印页面的标识 符，则确定所述待打印页面被打印过。
可选地，所述已打印页面的标识符包括前次打印的页面的标识符，所述打印判断模块包括：第二判断单元，设置为判断所述待打印页面的标识符与所述前次打印的页面的标识符是否满足预设规则；第二确定单元，设置为若所述第二判断单元判定所述待打印页面的标识符与所述前次打印的页面的标识符满足预设规则，则确定所述待打印页面被打印过。
可选地，还包括：确定打印模块，设置为若所述待打印页面没有被打印过，则打印所述待打印页面，并存储所述待打印页面的标识符以更新所述已打印页面的标识符。
可选地，当所述页面的标识符是按照数字递增规则生成时，所述预设规则包括：所述待打印页面的标识符小于或等于前次打印的页面的标识符。
可选地，当所述页面的标识符是按照数字递减规则生成时，所述预设规则包括：所述待打印页面的标识符大于或等于前次打印的页面的标识符。
一种防止页面重复打印的方法，所述方法包括：打印请求设备向打印机发送待打印文档，其中，所述待打印文档包括至少一个页面，每个所述页面均具有唯一的标识符；所述打印机接收所述待打印文档，确定所述至少一个页面中的预设页面为待打印页面；所述打印机根据所述待打印页面的标识符和预先存储的已打印页面的标识符，判断所述待打印页面是否被打印过；若所述待打印页面被打印过，则所述打印机放弃打印所述待打印页面。
一种打印系统，包括打印请求设备和打印机；所述打印请求设备，设置为向所述打印机发送待打印文档，其中，所述待打印文档包括至少一个页面，每个所述页面均具有唯一的标识符；所述打印机，设置为接收所述待打印文档，确定所述至少一个页面中的预设页面为待打印页面，根据所述待打印页面的标识符和预先存储的已打印页面的标识符，判断所述待打印页面是否被打印过，若所述待打印页面被打印过，则放弃打印所述待打印页面。
本公开还提供一种计算机可读存储介质，存储有计算机可执行指令，所述计算机可执行指令设置为上述任一种防止页面重复打印的方法。
本公开的防止页面重复打印的方法、装置及打印系统，解决相关技术的打印机在与打印请求设备之间的通信连接中断后，当再次恢复打印机与打印请求设备之间的通信连接时，所存在的重复打印文档页面的问题。
附图说明
图1是一实施例提供的打印机的框图；
图2是一实施例提供的防止页面重复打印的方法的流程示意图；
图3是另一实施例提供的防止页面重复打印的方法的流程示意图；
图4是一实施例提供的防止页面重复打印的装置的框图；
图5是一实施例提供的打印系统的框图；
图6是另一实施例提供的防止页面重复打印的方法的流程示意图；以及
图7是另一实施例提供的防止页面重复打印的装置的框图。
具体实施方式
考虑到相关技术的打印机在与打印请求设备之间的通信连接中断后，当再次恢复打印机与打印请求设备之间的通信连接时，所存在的重复打印文档页面的问题，本实施例提供一种防止页面重复打印的方法、装置及打印系统，下面通过实施例进行说明。
本实施例提供了一种防止页面重复打印的方法，该方法能够由打印机执行，通过该方法，打印机在接收到待打印文档后，能够辨别出已经打印过的页面和未打印过的页面，并放弃打印已经打印过的页面，从而防止页面重复打印。
图1是一实施例提供的打印机的框图，该打印机设置为接收打印请求设备发送的文档的打印作业数据(以下简称作业数据)并执行文档打印。如图1所示，打印机2包括控制器21、通信装置22、打印装置23、随机存取存储器(Random Access Memory，RAM)24和闪存(Flash Memory又称Flash存储器)25。
其中，控制器21设置为控制通信装置22、打印装置23、RAM24和Flash存储器25执行工作及进行数据的计算和处理，比如，控制通信装置22执行打印机2与打印请求设备之间的数据传输，控制打印装置23执行文档打印等。
通信装置22设置为执行打印机2与打印请求设备之间的数据传输，比如，通信装置22接收打印请求设备发送的文档的作业数据。
打印装置23设置为执行文档打印，打印装置23包括打印头231、压纸件232和输送机构233，其中，打印头231与控制器21电连接，设置为在打印纸上打印文档；压纸件232与打印头231相对设置，设置为支撑打印纸；输送机构233设置为输送打印纸，以使打印头231在设定长度的打印纸上打印文档。 由于采用何种方式实现打印功能不影响本实施例的实施，因此，打印装置23可以是热敏打印机构、热转印打印机构、喷墨打印机构或针式打印机构等，本实施例中，打印装置23为热转印打印机构。
RAM24，包括接收缓冲区241、打印缓冲区242和临时缓冲区243。其中，接收缓冲区241设置为存储由通信装置22接收的作业数据；打印缓冲区242设置为存储要发送给打印头231的点阵数据；临时缓冲区243设置为存储程序运行过程中生成的数据及变量。
Flash存储器25设置为存储打印机2的控制程序，并且，Flash存储器25还设置为存储已打印页面的标识符，其中，对于一个文档的每个页面，均具有唯一的标识符。本实施例中，Flash存储器25设置为存储最近打印的设定个数的页面的标识符，另一实施例中，Flash存储器25设置为存储前次打印的一个文档的所有已打印页面的标识符，又一实施例中，Flash存储器25设置为存储前次打印的一个页面的标识符。
本实施例中，打印机还可以包括非易失性存储器，例如至少一个磁盘存储器件、闪存器件或者其他非暂态固态存储器件。可以用于存储操作系统和至少一个功能所需的应用程序，或存储打印机的使用所创建的数据等。
图2是一实施例提供的防止页面重复打印的方法的流程示意图，该方法能够由本发明实施例所提供的打印机执行，打印机采用该方法对待打印文档的每个页面进行处理，如图所示，该方法包括步骤210-步骤230。
在步骤210中，接收待打印文档，其中，待打印文档包括至少一个页面，每个页面均具有唯一的标识符。
本步骤中，打印机以接收待打印文档的作业数据的形式接收待打印文档，其中，待打印文档的作业数据包括至少一个页面的作业数据，且每个页面均具有唯一的标识符，每个页面的标识符可以是由打印请求设备生成。
以本实施例的打印机为例，控制器21控制通信装置22接收打印请求设备发送的待打印文档的作业数据，并将待打印文档的作业数据存储至RAM24的接收缓冲区241中。其中，待打印文档的作业数据包括至少一个页面的作业数据，每个页面均具有唯一的标识符，该标识符包含在待打印文档的作业数据中，比如，一个页面的作业数据包括顺序排列的打印机设置指令、打印机控制指令、页面标识指令、打印图像指令、打印数据以及启动打印指令，其中，页面标识 指令包括指令头和标识符。
在步骤220中，确定待打印文档的至少一个页面中的预设页面为待打印页面，根据待打印页面的标识符和预先存储的已打印页面的标识符，判断待打印页面是否被打印过。
打印机确定待打印文档的至少一个页面中的预设页面为待打印页面，本步骤中，打印机可以按照页面接收的先后顺序依次将待打印文档中的每个页面确定为待打印页面，比如，打印机在第一次确定待打印页面时，将最先接收到的页面确定为待打印页面。
打印机在确定待打印页面后，获取待打印页面的标识符，根据待打印页面的标识符和预先存储的已打印页面的标识符，判断待打印页面是否被打印过。一种实施方式中，打印机预先存储的已打印页面的标识符为最近打印的设定个数的页面的标识符，或者为前次打印的一个文档的所有已打印页面的标识符。在上述两种情况下，打印机根据待打印页面的标识符和预先存储的已打印页面的标识符，判断待打印页面是否被打印过，可以包括：判断已打印页面的标识符中是否包含待打印页面的标识符，若包含，则确定待打印页面被打印过，若不包含，确定待打印页面没有被打印过。
另一种实施方式中，打印机预先存储的已打印页面的标识符为一个，为前次打印的页面的标识符，这种情况下，打印机根据待打印页面的标识符和预先存储的已打印页面的标识符，判断待打印页面是否被打印过，可以包括：判断待打印页面的标识符与前次打印的页面的标识符是否满足预设规则，若满足，则确定待打印页面被打印过，若不满足，确定待打印页面没有被打印过。其中，每个页面的标识符可以是由打印请求设备生成，每个页面的标识符为数字形式，当打印请求设备按照数字递增规则生成每个页面的标识符时，预设规则可以为，待打印页面的标识符小于等于前次打印的页面的标识符，若判定待打印页面的标识符小于等于前次打印的页面的标识符，则说明待打印页面被打印过；当打印请求设备按照数字递减规则生成每个页面的标识符时，预设规则可以为，待打印页面的标识符大于等于前次打印的页面的标识符，若判定待打印页面的标识符大于等于前次打印的页面的标识符，则说明待打印页面被打印过。
以本实施例的打印机为例，控制器21解析接收缓冲区241中存储的待打印文档的作业数据，按照预设顺序从待打印文档中确定待打印页面，比如，控制 器21按照待打印文档中页面接收的先后顺序依次将待打印文档中的每个页面确定为待打印页面。确定待打印页面后，控制器21解析待打印文档的作业数据，获取待打印页面的标识符，待打印页面的标识符包含在待打印文档的作业数据中。控制器21根据待打印页面的标识符及存储的已打印页面的标识符判断待打印页面是否已经被打印过。
本实施例中，控制器21根据存储的已打印页面的标识符中是否包含待打印页面的标识符判断待打印页面是否已经被打印过。比如，当Flash存储器25中存储有最近打印的设定个数的页面的标识符时，或者，当Flash存储器25中存储有前次打印的一个文档的所有已打印页面的标识符时，控制器21依次比较Flash存储器25中存储的每个标识符与待打印页面的标识符是否一致，当Flash存储器25中存储的一个标识符与待打印页面的标识符一致时，则判定待打印页面已经被打印过，当Flash存储器25中存储的所有标识符与待打印页面的标识符均不一致时，则判定待打印页面没有被打印过。
另一实施例中，控制器21根据待打印页面的标识符与存储的已打印页面的标识符的大小关系判断待打印页面是否已经被打印过。该实施例中，页面的标识符为数字形式，打印机2依次打印的每个页面的标识符呈递增或递减规律由打印请求设备生成，Flash存储器25中存储有前次打印的一个页面的标识符，控制器21比较待打印页面的标识符与前次打印的页面的标识符的大小关系，并根据比较结果判断待打印页面是否已经被打印过。比如，当打印请求设备按照数字递增规则生成每个页面的标识符时，控制器21比较待打印页面的标识符与前次打印的页面的标识符的大小关系，当待打印页面的标识符小于或等于前次打印的页面的标识符时，判定待打印页面已经被打印过，当待打印页面的标识符大于前次打印的页面的标识符时，判定待打印页面没有被打印过；再比如，当打印请求设备按照数字递减规则生成每个页面的标识符时，控制器21比较待打印页面的标识符与前次打印的页面的标识符的大小关系，当待打印页面的标识符大于或等于前次打印的页面的标识符时，判定待打印页面已经被打印过，当待打印页面的标识符小于前次打印的页面的标识符时，判定待打印页面没有被打印过。
本实施例中，打印请求设备的驱动程序在生成文档的作业数据时，为每个页面分配一个唯一的标识符，从而使打印机2在接收到作业数据时，可以根据 待打印页面的标识符及存储的已打印页面的标识符判断待打印页面是否已经被打印过。
可选地，打印请求设备首先生成文档的作业数据，然后将作业数据发送至打印机，当打印请求设备检测到通信中断时，停止发送作业数据，当打印请求设备检测到通信恢复时，将之前生成的文档的作业数据重复发送至打印机，无论打印请求设备和打印机之间通信中断恢复多少次，打印请求设备都只是重复发送之前生成的文档数据，因此打印请求设备只为每个页面分配一次标识符，这样，打印机2在接收到作业数据时，可以根据待打印页面的标识符及存储的已打印页面的标识符判断待打印页面是否已经被打印过。
可选地，打印请求设备随机生成页面的标识符，在另外的实施例中，打印请求设备能够按照递增或递减的规律生成页面的标识符，且页面标识符为数字形式。
在步骤230中，若待打印页面被打印过，则放弃打印待打印页面。
若打印机判定待打印页面被打印过，则放弃打印待打印页面。
以本实施例的打印机为例，当控制器21判定待打印页面被打印过时，放弃打印待打印页面，并在待打印文档的作业数据中重新确定下一个待打印页面，继续判断下一个待打印页面是否被打印过。
本实施例的防止页面重复打印的方法，接收待打印文档，从待打印文档中确定待打印页面，根据待打印页面的标识符和预先存储的已打印页面的标识符，判断待打印页面是否被打印过，若待打印页面被打印过，则放弃打印待打印页面。通过本实施例的方法，打印机在与打印请求设备之间的通信连接中断后，当再次恢复打印机与打印请求设备之间的通信连接时，打印机对于所接收的每个页面，均判断该页面是否被打印过，若打印过，则放弃打印，从而避免通信连接中断前已打印的页面被重复打印，有效解决了相关技术的打印机在与打印请求设备之间的通信连接中断后，当再次恢复打印机与打印请求设备之间的通信连接时，所存在的重复打印文档页面的问题。
可选地，本实施例中的方法还包括：若判定待打印页面没有被打印过，则打印待打印页面，并存储待打印页面的标识符以更新已打印页面的标识符。
若判定待打印页面没有被打印过，则打印待打印页面，并存储待打印页面的标识符以更新已打印页面的标识符，可以是将待打印页面的标识符存储至 Flash存储器25中作为已打印页面的标识符。
以本实施例的打印机为例，当控制器21判定待打印页面没有被打印过时，控制打印装置23在打印纸上打印待打印页面，包括：控制器21解析待打印页面的作业数据，生成待打印页面的点阵数据，并将点阵数据依次发送至打印头231，控制打印头231在打印纸上打印相应的文字和图形至少之一，打印头231打印过程中，控制器21控制输送机构233驱动打印纸移动，从而完成待打印页面的打印。
当待打印页面打印结束后，控制器21将待打印页面的标识符作为已打印页面的标识符存储至Flash存储器25中，以使打印机2在处理下一个待打印页面时，可以根据下一个待打印页面的标识符及存储的已打印页面的标识符判断下一个待打印页面是否已经被打印过。
本实施例中，当Flash存储器25中存储有最近打印的设定个数的页面的标识符时，控制器21删除最先存储的一个标识符，并将待打印页面的标识符存储至Flash存储器25中。当Flash存储器25中存储有前次打印的一个文档的所有已打印页面的标识符时，控制器21判断待打印页面与存储的已打印页面的标识符对应的页面是否属于同一文档，如果待打印页面与存储的已打印页面的标识符对应的页面属于同一文档，则将待打印页面的标识符追加存储至Flash存储器25中，如果待打印页面与存储的已打印页面的标识符对应的页面不属于同一文档，则控制器21首先清除Flash存储器25中存储的所有标识符，然后将待打印页面的标识符存储至Flash存储器25中，其中，控制器21根据待打印页面的标识符与存储的已打印页面的标识符的关系，判断待打印页面与存储的已打印页面的标识符对应的页面是否属于同一文档，比如，一个页面的标识符包括“文档号”和“页面号”两部分，“文档号”具有唯一性，控制器21根据待打印页面的标识符的“文档号”与存储的已打印页面的标识符的“文档号”是否一致，判断待打印页面与存储的已打印页面的标识符对应的页面是否属于同一文档，其中，当待打印页面的标识符的“文档号”与存储的已打印页面的标识符的“文档号”二者一致时，判定待打印页面与存储的已打印页面的标识符对应的页面属于同一文档，当待打印页面的标识符的“文档号”与存储的已打印页面的标识符的“文档号”二者不一致时，判定待打印页面与存储的已打印页面的标识符对应的页面不属于同一文档。当Flash存储器25中仅存储前次打印的一个页 面的标识符时，控制器21使用待打印页面的标识符覆盖Flash存储器25中存储的标识符。
图3是另一实施例提供的防止页面重复打印的方法的流程示意图，如图3所示，该方法可以是由上述打印机执行，包括步骤310-步骤360。
在步骤310中，接收待打印文档。
控制器21控制通信装置22接收打印请求设备发送的待打印文档的作业数据，并将该文档的作业数据存储至RAM24的接收缓冲区241中。
在步骤320中，从接收到的文档中确定一个页面，并获取该页面的标识符。
控制器21对接收缓冲区241中的作业数据进行解析，根据该作业数据中包括的多个页面的作业数据的接收顺序确定一个页面。示例性的，可以是确定第N个接收到的页面，并获取该页面的标识符，其中N为小于等于该作业数据中包括的页面总数的正整数。如可以是确定第一个接收到的页面。其中，该页面的标识符位于该文档的作业数据中。
在步骤330中，根据该页面的标识符及存储的已打印页面的标识符判断该页面是否已经被打印过。
控制器21根据获取的该页面的标识符及存储的已打印页面的标识符，判断该页面是否已经被打印过，其中，控制器21可以根据步骤220描述方法判断该页面是否已经被打印过，在此不再赘述。当控制器21判定该页面已经被打印过时，执行步骤340，当控制器21判定该页面没有被打印过时，执行步骤350。
在步骤340中，放弃打印该页面。
当控制器21判定该页面已经被打印过时，清除接收缓冲区241中该页面的作业数据以及该页面的标识符，从而使打印机不执行该页面的打印。
在步骤350中，打印该页面，并在打印结束后存储该页面的标识符。
当控制器21判定该页面没有被打印过时，控制打印装置23在打印纸上打印该页面，并在打印结束后将该页面的标识符作为已打印页面的标识符存储至Flash存储器25中。
在步骤360中，判断该页面是否是该文档中的最后一个页面。
控制器21判断该页面是否是该文档中的最后一个页面，可选地，控制器21判断在接收到的该文档的作业数据中，该页面的作业数据后面是否还有其他页面的作业数据，比如，控制器21在接收到的作业数据中，读取该页面的作业数 据后面的作业数据，如果能够读取到作业数据，则确定该页面不是文档的最后一个页面，如果读取不到任何作业数据，则确定该页面是文档的最后一个页面。若该页面不是文档的最后一个页面，则返回执行步骤320，若该页面是文档的最后一个页面，流程结束。
本实施例的防止页面重复打印的方法，在接收到一个文档后，确定一个页面并从该页面开始依次判断该文档中的页面是否已经被打印过，当一个页面已经被打印过时，取消打印该页面，当一个页面没有被打印过时，打印该页面。因此，通过本实施例的方法，打印机在与打印请求设备之间的通信连接中断后，当再次恢复打印机与打印请求设备之间的通信连接时，不会造成通信连接中断前已打印的页面被重复打印，可以有效解决相关技术中的打印机在与打印请求设备之间的通信连接中断后，当再次恢复打印机与打印请求设备之间的通信连接时，所存在的重复打印文档页面的问题。
对应上述的防止页面重复打印的方法，本实施例还提供了一种防止页面重复打印的装置，该防止页面重复打印的装置可以是配置于打印机内。图4是一实施例提供的防止页面重复打印的装置的框图，如图4所示，该装置包括：
数据接收模块41，设置为接收待打印文档，其中，待打印文档包括至少一个页面，每个页面均具有唯一的标识符；
打印判断模块42，设置为确定待打印文档的至少一个页面中的预设页面为待打印页面，根据待打印页面的标识符和预先存储的已打印页面的标识符，判断待打印页面是否被打印过；
放弃打印模块43，设置为若待打印页面被打印过，则放弃打印待打印页面。
一实施例中，打印判断模块包括：第一判断单元，设置为判断已打印页面的标识符中是否包含待打印页面的标识符；第一确定单元，设置为若第一判断单元判定已打印页面的标识符中包含待打印页面的标识符，则确定待打印页面被打印过。
另一实施例中，已打印页面的标识符包括前次打印的页面的标识符，打印判断模块包括：第二判断单元，设置为判断待打印页面的标识符与前次打印的页面的标识符是否满足预设规则；第二确定单元，设置为若第二判断单元判定待打印页面的标识符与前次打印的页面的标识符满足预设规则，则确定待打印页面被打印过。
可选地，当页面的标识符是按照数字递增规则生成时，预设规则包括待打印页面的标识符小于或等于前次打印的页面的标识符。
可选地，当页面的标识符是按照数字递减规则生成时，预设规则包括：待打印页面的标识符大于或等于前次打印的页面的标识符。
本实施例中的装置还包括：确定打印模块，设置为若待打印页面没有被打印过，则打印待打印页面，并存储待打印页面的标识符以更新已打印页面的标识符。
在一实施例中，上述防止页面重复打印的装置为图1所示的打印机2的控制器21的一部分。
如图7，在另一实施例中，防止页面重复打印的装置包括处理器700、存储器710、通信接口720和总线730。处理器700、存储器710和通信接口720可以通过总线730完成相互间的通信。通信接口720可以设置为信息传输。
处理器700设置为执行存储器710中存储的逻辑指令，并实现上述防止页面重复打印方法。
存储器710可以包括存储程序区和存储数据区，存储程序区可以存储操作系统和至少一个功能所需的应用程序。存储数据区可以存储根据取款机的使用所创建的数据等。此外，存储器710可以包括例如，随机存取存储器的易失性存储器，还可以包括非易失性存储器。例如至少一个磁盘存储器件、闪存器件或者其他非暂态固态存储器件。
在一实施例中，上述防止页面重复打印的装置配置在打印机中。
本实施例的防止页面重复打印的装置，接收待打印文档，在待打印文档中确定待打印页面，根据待打印页面的标识符和预先存储的已打印页面的标识符，判断待打印页面是否被打印过，若待打印页面被打印过，则放弃打印待打印页面。通过本实施例的装置，打印机在与打印请求设备之间的通信连接中断后，当再次恢复打印机与打印请求设备之间的通信连接时，打印机对于所接收的每个页面，均判断该页面是否被打印过，若打印过，则放弃打印，从而避免通信连接中断前已打印的页面被重复打印，有效解决相关技术中的打印机在与打印请求设备之间的通信连接中断后，当再次恢复打印机与打印请求设备之间的通信连接时，所存在的重复打印文档页面的问题。
对应上述的防止页面重复打印的方法及装置，本实施例还提供了一种打印 系统，图5是一实施例提供的打印系统的框图，如图5所示，该系统包括打印请求设备1和上述的打印机2，该系统能够执行上述的防止页面重复打印的方法。打印请求设备1和打印机2可以通过USB或以太网等建立通信连接。
打印请求设备1可以为计算机等终端设备，例如个人电脑、智能手机、平板电脑、电子书阅读器、膝上型便携计算机或车载电脑等等。打印请求设备1上安装有操作系统、应用程序以及打印机2的驱动程序，打印文档时，用户通过应用程序生成文档以及编辑文档，应用程序调用打印机2的驱动程序，打印机2的驱动程序生成待打印文档的作业数据，其中，作业数据包含可被打印机2识别的打印命令和打印数据，打印请求设备1将待打印文档的作业数据发送到打印机2。
本实施例中，打印请求设备1设置为向打印机2发送待打印文档，其中，待打印文档包括至少一个页面，每个页面均具有唯一的标识符。可选地，打印请求设备1根据用户的打印指令确定待打印文档，然后生成待打印文档的作业数据，打印请求设备1在生成待打印文档的作业数据时，为待打印文档中的每个页面分配一个唯一的标识符，打印请求设备1在生成待打印文档的作业数据后，将待打印文档的作业数据发送至打印机2。
当打印请求设1备检测到通信中断时，停止发送作业数据，当打印请求设备1检测到通信恢复时，将待打印文档的作业数据重复发送至打印机，无论打印请求设备1和打印机2之间通信中断恢复多少次，打印请求设备1都只是重复发送待打印文档的作业数据，相当于完整数据包的重复发送机制。
打印机2设置为接收待打印文档，确定待打印文档的至少一个页面中的预设页面为待打印页面，根据待打印页面的标识符和预先存储的已打印页面的标识符，判断待打印页面是否被打印过，若待打印页面被打印过，则放弃打印待打印页面。
由于本实施例中的打印机2能够执行上述的防止页面重复打印的方法，因此关于本实施例提供的系统可以参考上述的方法的描述，这里不再赘述。
通过本实施例的打印系统，打印机在与打印请求设备之间的通信连接中断后，当再次恢复打印机与打印请求设备之间的通信连接时，打印机对于所接收的每个页面，均判断该页面是否被打印过，若打印过，则放弃打印，从而避免通信连接中断前已打印的页面被重复打印，有效解决相关技术中的打印机在与 打印请求设备之间的通信连接中断后，当再次恢复打印机与打印请求设备之间的通信连接时，所存在的重复打印文档页面的问题。
对应上述的打印系统，本实施例还提供了一种防止页面重复打印的方法，图6是另一实施例提供的防止页面重复打印的方法的流程示意图，图6中，打印请求设备即为图5中的打印请求设备1，打印机即为图5中的打印机2，如图6所示，该流程包括步骤410-440。
在步骤410中，打印请求设备向打印机发送待打印文档，其中，待打印文档包括至少一个页面，每个页面均具有唯一的标识符。
可选地，打印请求设备1根据用户的打印指令确定待打印文档，然后生成待打印文档的作业数据，打印请求设备1在生成待打印文档的作业数据时，为待打印文档中的每个页面分配一个唯一的标识符，打印请求设备1在生成待打印文档的作业数据后，将待打印文档的作业数据发送至打印机2。
当打印请求设1备检测到通信中断时，停止发送作业数据，当打印请求设备1检测到通信恢复时，将待打印文档的作业数据重复发送至打印机，无论打印请求设备1和打印机2之间通信中断恢复多少次，打印请求设备1都只是重复发送待打印文档的作业数据，相当于完整数据包的重复发送机制。
在步骤420中，打印机接收待打印文档，确定待打印文档的至少一个页面中的预设页面为待打印页面。
在步骤430中，打印机根据待打印页面的标识符和预先存储的已打印页面的标识符，判断待打印页面是否被打印过。
在步骤440中，若待打印页面被打印过，则打印机放弃打印待打印页面。
由于本实施例中的方法与前述的打印系统相互对应，因此关于本实施例提供的方法可以参考上述系统的描述，这里不再赘述。
通过本实施例的防止页面重复打印的方法，打印机在与打印请求设备之间的通信连接中断后，当再次恢复打印机与打印请求设备之间的通信连接时，打印机对于所接收的每个页面，均判断该页面是否被打印过，若打印过，则放弃打印，从而避免通信连接中断前已打印的页面被重复打印，有效解决了相关技术中的打印机在与打印请求设备之间的通信连接中断后，当再次恢复打印机与打印请求设备之间的通信连接时，所存在的重复打印文档页面的问题。
本实施例还提供一种计算机可读存储介质，存储有计算机可执行指令，所 述计算机可执行指令设置为上述任一种防止页面重复打印的方法。
本实施例所提供的防止页面重复打印的装置可以为设备上的特定硬件或者安装于设备上的软件或固件等。本实施例所提供的装置，实现原理及产生的技术效果和前述方法实施例相同，为简要描述，装置实施例部分未提及之处，可参考前述方法实施例中相应内容。所属领域的技术人员可以清楚地了解到，为描述的方便和简洁，前述描述的系统、装置和单元的工作过程，均可以参考上述方法实施例中的对应过程，在此不再赘述。
所述功能如果以软件功能单元的形式实现并作为独立的产品销售或使用时，可以存储在一个计算机可读取存储介质中。基于这样的理解，本实施例的技术方案本质上或者说对相关技术做出贡献的部分或者该技术方案的部分可以以软件产品的形式体现出来，该计算机软件产品存储在一个存储介质中，包括若干指令用以使得一台计算机设备(可以是个人计算机，服务器，或者网络设备等)执行本发明各个实施例所述方法的全部或部分步骤。而前述的存储介质包括：U盘、移动硬盘、只读存储器(Read-Only Memory，ROM)、随机存取存储器(Random Access Memory，RAM)、磁碟或者光盘等各种可以存储程序代码的介质。
应注意到：相似的标号和字母在下面的附图中表示类似项，因此，一旦某一项在一个附图中被定义，则在随后的附图中不需要对其进行进一步定义和解释，此外，术语“第一”、“第二”、“第三”等仅用于区分描述，而不能理解为指示或暗示相对重要性。
工业实用性
本公开的防止页面重复打印的方法，解决了相关技术中的打印机在与打印请求设备之间的通信连接中断后，当再次恢复打印机与打印请求设备之间的通信连接时，所存在的重复打印文档页面的问题。

Claims (15)

  1. 一种防止页面重复打印的方法，包括：
    接收待打印文档，其中，所述待打印文档包括至少一个页面，每个所述页面均具有唯一的标识符；
    确定所述至少一个页面中的预设页面为待打印页面；
    根据所述待打印页面的标识符和预先存储的已打印页面的标识符，判断所述待打印页面是否被打印过；以及
    若所述待打印页面被打印过，则放弃打印所述待打印页面。
  2. 根据权利要求1所述的方法，其中，所述根据所述待打印页面的标识符和预先存储的已打印页面的标识符，判断所述待打印页面是否被打印过，包括：
    判断所述已打印页面的标识符中是否包含所述待打印页面的标识符；
    若包含，则确定所述待打印页面被打印过。
  3. 根据权利要求1所述的方法，其中，所述已打印页面的标识符包括前次打印的页面的标识符，所述根据所述待打印页面的标识符和预先存储的已打印页面的标识符，判断所述待打印页面是否被打印过，包括：
    判断所述待打印页面的标识符与所述前次打印的页面的标识符是否满足预设规则；
    若满足，则确定所述待打印页面被打印过。
  4. 根据权利要求1所述的方法，还包括：
    若所述待打印页面没有被打印过，则打印所述待打印页面，并存储所述待打印页面的标识符以更新所述已打印页面的标识符。
  5. 根据权利要求3所述的方法，其中，所述页面的标识符是按照数字递增规则生成，所述预设规则包括：所述待打印页面的标识符小于或等于前次打印的页面的标识符。
  6. 根据权利要求3所述的方法，其中，所述页面的标识符是按照数字递减规则生成，所述预设规则包括：所述待打印页面的标识符大于或等于前次打印的页面的标识符。
  7. 一种防止页面重复打印的装置，包括：
    数据接收模块，设置为接收待打印文档，其中，所述待打印文档包括至少一个页面，每个所述页面均具有唯一的标识符；
    打印判断模块，设置为确定所述至少一个页面中的预设页面为待打印页面， 根据所述待打印页面的标识符和预先存储的已打印页面的标识符，判断所述待打印页面是否被打印过；以及
    放弃打印模块，设置为若所述待打印页面被打印过，则放弃打印所述待打印页面。
  8. 根据权利要求7所述的装置，其中，所述打印判断模块包括：
    第一判断单元，设置为判断所述已打印页面的标识符中是否包含所述待打印页面的标识符；
    第一确定单元，设置为若所述第一判断单元判定所述已打印页面的标识符中包含所述待打印页面的标识符，则确定所述待打印页面被打印过。
  9. 根据权利要求7所述的装置，其中，所述已打印页面的标识符包括前次打印的页面的标识符，所述打印判断模块包括：
    第二判断单元，设置为判断所述待打印页面的标识符与所述前次打印的页面的标识符是否满足预设规则；
    第二确定单元，设置为若所述第二判断单元判定所述待打印页面的标识符与所述前次打印的页面的标识符满足预设规则，则确定所述待打印页面被打印过。
  10. 根据权利要求7所述的装置，还包括：
    确定打印模块，设置为若所述待打印页面没有被打印过，则打印所述待打印页面，并存储所述待打印页面的标识符以更新所述已打印页面的标识符。
  11. 根据权利要求9所述的装置，其中，所述页面的标识符是按照数字递增规则生成，所述预设规则包括：所述待打印页面的标识符小于或等于前次打印的页面的标识符。
  12. 根据权利要求9所述的装置，其中，所述页面的标识符是按照数字递减规则生成，所述预设规则包括：所述待打印页面的标识符大于或等于前次打印的页面的标识符。
  13. 一种防止页面重复打印的方法，包括：
    打印请求设备向打印机发送待打印文档，其中，所述待打印文档包括至少一个页面，每个所述页面均具有唯一的标识符；
    所述打印机接收所述待打印文档，确定所述至少一个页面中的预设页面为待打印页面；
    所述打印机根据所述待打印页面的标识符和预先存储的已打印页面的标识符，判断所述待打印页面是否被打印过；以及
    若所述待打印页面被打印过，则所述打印机放弃打印所述待打印页面。
  14. 一种打印系统，包括打印请求设备和打印机；
    所述打印请求设备，设置为向所述打印机发送待打印文档，其中，所述待打印文档包括至少一个页面，每个所述页面均具有唯一的标识符；
    所述打印机，设置为接收所述待打印文档，确定所述至少一个页面中的预设页面为待打印页面，根据所述待打印页面的标识符和预先存储的已打印页面的标识符，判断所述待打印页面是否被打印过，以及若所述待打印页面被打印过，则放弃打印所述待打印页面。
  15. 一种计算机可读存储介质，存储有计算机可执行指令，所述计算机可执行指令设置为权利要求1-6和13任一项所述的方法。
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