JP2010036516A - Printing apparatus - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a printing apparatus which can prevent a desired sheet of paper from being used for another purpose. <P>SOLUTION: In a printer 100, when requiring, for example, double-sided manual printing on the PC 200 side, a conventional print job for the face side is received and a secure print job for the back side is received following the print job for the face side. Then, after the print job for the face side is performed, the printer 100 enters a password input standby state of the secure print job on the back side. After a password is input, the use of a tray specified by the secure print job (specified tray) is restricted. Then, a desired sheet of paper is reset to the specified tray and printed. After printing, the restriction of the specified tray is canceled. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to a printing apparatus that forms an image on a sheet fed from a predetermined sheet feeding unit. More specifically, the present invention relates to a printing apparatus that reliably performs printing on a desired sheet.

Conventionally, a control method (so-called manual duplex printing) for manually performing duplex printing has been proposed for a printing apparatus that does not have a duplex printing function. In manual double-sided printing, after printing one side, the user turns the paper over, sets the paper again, and prints the other side to implement double-sided printing. As a printing apparatus that realizes such manual double-sided printing, for example, there is a printing control apparatus disclosed in Patent Document 1.
Japanese Patent Laid-Open No. 11-20272

  The conventional printing apparatus has the following problems. That is, when printing on a desired sheet, an appropriate print result may not be obtained. For example, in manual double-sided printing as described above, after an image is formed on one side of a sheet, it is necessary to print an image associated with one side on the other side of the sheet. That is, it is necessary to print on a desired sheet (that is, a sheet on which a corresponding image is printed on one side). If the sheet is used by another user, an appropriate printed matter cannot be obtained. Such a problem is not limited to manual duplex printing. For example, when information is printed on a sheet with specific information printed on the front side, the information associated with the information is printed on the surface of the same sheet. Or, it occurs when a special paper is used.

  The present invention has been made to solve the problems of the conventional printing apparatus described above. That is, the problem is to provide a printing apparatus that can prevent a desired sheet from being used for other purposes.

  A printing apparatus designed to solve this problem includes: a receiving unit that specifies a paper feeding unit that feeds paper, and receives a print job (specific print job) associated with unlocking data that permits printing; Paper is fed from an input means for inputting unlocking data and a paper feed section designated by a specific print job permitted to be printed by the unlocking data input by the input means, and an image of the specific print job is displayed. When printing means that prints on the paper and the specific print job is accepted by the accepting means, it is restricted that paper feeding from the paper feed unit specified in the specific print job is performed from other print jobs And a limiting means.

  The printing apparatus of the present invention receives a specific print job associated with unlocking data (for example, a password or an ID number). When a specific print job is received, printing is performed when printing is permitted by inputting unlocking data. In addition, a paper feed unit is designated for the specific print job. The printing apparatus according to the present invention restricts the feeding of paper from the paper feeding unit designated by the specific print job from another print job while receiving the specific print job.

  In other words, the printing apparatus of the present invention restricts the use of other print jobs from a specific paper feed unit while receiving a specific print job. As a result, the use of paper set in the same paper feeding unit is restricted for other print jobs. The specific print job has unlock data. Therefore, even if it takes time for the user who requested the specific print job to reach the printing apparatus, the continuation of the specific print job by another user can be avoided. Therefore, it is possible to avoid using a desired sheet set in the sheet feeding unit by another person.

  The specific print job of the present invention is preferably a subsequent job in manual duplex printing that outputs two print jobs, a preceding print job (preceding job) and a succeeding print job (subsequent job). That is, by applying the specific print job to the succeeding job of manual duplex printing, it is possible to avoid using the printed matter of the preceding job, which is a desired sheet, for other purposes. Therefore, an appropriate double-sided printed material can be obtained during manual double-sided printing.

  In the above printing apparatus, unlock data may be associated with a preceding job in manual duplex printing. That is, the unlocking data is also associated with the front surface, so that security can be enhanced on both the front and back sides.

  In the above printing apparatus, it is better that the unlocking data associated with the preceding job and the succeeding job in manual duplex printing is the same. That is, by making the unlocking data common, the user can easily handle the unlocking data.

  In the printing apparatus according to the present invention, it is better that a print job from a paper feeding unit that is not restricted by the restricting unit is received and executed. In other words, restricting printing to a sheet feeding unit that is not a restriction target inconveniences other users. Therefore, by making it possible to execute printing from a paper supply unit that is not a restriction target, it is possible to avoid a state in which the printing apparatus is exclusively used by the user who has output the specific print job.

  Further, the printing apparatus according to the present invention may be configured such that when a specific print job is received and at least until unlocking data corresponding to the specific print job is input, another print job is set in a standby state or an acceptance refusal state. Good. For example, if another print job is executed during manual duplex printing (specifically, between a preceding job and a succeeding job), the user who requested the specific print job is confused. For example, if overtaking printing is performed before another job is executed, it is difficult to determine which printed matter is the target of manual duplex printing. If another job before the succeeding job is to be executed for a long time, the subsequent job is awaited. Therefore, during the period before unlocking based on the unlocking data, other print jobs are put in a standby state or rejected to avoid them.

  The printing apparatus according to the present invention further comprises an instruction means for instructing the start of printing of a specific print job whose printing is permitted by the unlocking data, and the instruction means starts after the unlocking data corresponding to the specific print job is input. Until the start of printing of the specific print job is instructed, it is better to place another print job in a standby state or an acceptance refusal state.

  According to the present invention, a printing apparatus that can prevent a desired sheet from being used for other purposes is realized.

  DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments embodying an image reading apparatus according to the present invention will be described below in detail with reference to the accompanying drawings. In this embodiment, the present invention is applied to an electrophotographic printer that realizes manual duplex printing.

[First embodiment]
[Entire printer configuration]
As shown in FIG. 1, the printer 100 according to the first embodiment includes an image forming unit 10 that prints an image on a sheet and a scanner unit 20 that reads an image of a document. Further, on the front side of the scanner unit 20, an operation panel 40 including a display unit 41 formed of a liquid crystal display and a button group 42 including a start key, a stop key, a numeric keypad, and the like is provided. As a result, the operation status can be displayed and the user can perform an input operation. Further, an insertion port 93 for manual sheet feeding is provided on the front side of the image forming unit 10.

  In addition, the printer 100 of this embodiment is connected to a network 400 as shown in FIG. In addition to the printer 100, a personal computer (PC) 200 is connected to the network 400. Then, a print request is output from the PC 200 to the printer 100, and the printer 100 receives the print request and performs print processing. In addition to these, information processing devices (such as a PC) are connected to the network 400, and the printer 100 can receive a print request from these information processing devices and perform printing. Further, the information processing device can be directly connected to the printer 100 without going through the network 400.

[Configuration of printer image forming unit]
The image forming unit 10 forms an image by a known electrophotographic method. As shown in FIG. 3, the image forming unit 10 forms a process unit 50 for forming an image, a fixing device 8 for fixing an unfixed toner image, and an image. It includes paper feed cassettes 90 and 91 (an example of a paper feed unit) for placing paper before formation, and a paper discharge tray 92 for placing paper after image formation.

  In the image forming unit 10, the sheets stored in the sheet feeding cassette 90 to the sheet feeding cassette 91 located at the bottom pass through the sheet feeding roller 72 to sheet feeding roller 73, the process unit 50, and the fixing device 8 and are discharged. A substantially S-shaped conveyance path 71 is provided so as to be guided to the upper discharge tray 92 via the roller 74. That is, the image forming unit 10 takes out the sheets placed in the sheet feeding cassette 90 through the sheet feeding cassette 91 one by one, conveys the sheets to the process unit 50, and forms a toner image formed in the process unit 50. Is transferred to the paper. Further, the sheet on which the toner image is transferred is conveyed to the fixing device 8 and the toner image is thermally fixed on the sheet. Then, the sheet after fixing is discharged to a paper discharge tray 92.

  The process unit 50 includes a photosensitive drum 1, a charging device 2 that uniformly charges the surface of the photosensitive drum 1, and an exposure device 3 that irradiates the surface of the photosensitive drum 1 with light to form an electrostatic latent image. A developing device 4 for developing the electrostatic latent image with toner, a transfer device 5 for transferring the toner image on the photosensitive drum 1 to a sheet, and a cleaning blade for removing residual toner on the photosensitive drum 1 6. The photosensitive drum 1, the charging device 2, the developing device 4, and the cleaning blade 6 are configured as a process cartridge and are detachable from the apparatus main body.

  In the process unit 50, the surface of the photosensitive drum 1 is uniformly charged by the charging device 2. Thereafter, exposure is performed with light from the exposure device 3, and an electrostatic latent image of an image to be formed on the paper is formed. Next, toner is supplied to the photosensitive drum 1 via the developing device 4. As a result, the electrostatic latent image on the photosensitive drum 1 is visualized as a toner image.

  In the image forming unit 10, a sheet inserted from the side surface (insertion slot) by the user passes through the carry-in roller 75, the process unit 50, and the fixing device 8, and passes through the sheet discharge roller 74 to the upper sheet discharge tray. A conveyance path for manual sheet feeding to 92 is provided. In other words, in the printer 100 of this embodiment, there are three options for the paper feed tray: paper feed cassettes 90 and 91 and manual feed.

[Electrical configuration of printer]
Next, the electrical configuration of the printer 100 will be described. As shown in FIG. 4, the printer 100 includes a control device 30 including a CPU 31, a ROM 32, a RAM 33, an NVRAM 34, an ASIC 35, a network interface 36, and a USB interface 37.

  The ROM 32 stores various control programs for controlling the printer 100, various settings, initial values, and the like. The RAM 33 is used as a work area from which various control programs are read or as a storage area for temporarily storing image data.

  The ASIC 35 is electrically connected to the process unit 50, the scanner unit 20, the display unit 41, the button group 42, and the like. The CPU 31 stores each processing result in the RAM 33 or the NVRAM 34 in accordance with the control program read from the ROM 32, while driving each component of the printer 100 (for example, driving motors (not shown) for various rollers constituting the conveyance path 71) via the ASIC 35. ) And a moving motor (not shown) of the image sensor unit constituting the scanner unit 20.

  An information device is connected to the network interface 36 or the USB interface 37, and mutual data communication is possible via the network interface 36.

[Manual duplex printing procedure]
Next, the manual double-sided printing processing procedure will be described separately for the processing on the PC 200 side and the processing on the printer 100 side. In the following description, for the sake of convenience, the first printed side will be referred to as “front side” and the side printed after resetting will be described as “back side” for convenience.

[PC side processing]
[Print request processing]
First, the print request process of the PC 200 will be described with reference to the flowchart of FIG. This processing is executed when printing is instructed via an application or the like incorporated in the PC 200.

  First, it is determined whether manual duplex printing is set for the print job to be processed (S101). The user can set manual duplex printing when instructing printing. Manual duplex printing is set by a setting dialog 60 as shown in FIG. 6, for example. In the setting dialog 60, in addition to a check box 61 for setting whether or not to perform manual duplex printing, as a necessary item for performing manual duplex printing, a password (an example of unlocking data) setting (setting field 62) and a supply The paper tray can be selected (setting field 63). In other words, a print job for which manual duplex printing is set includes password and paper feed tray settings.

  If manual duplex printing is not set (S101: NO), a normal print request is made (S111). That is, various settings (designated tray, paper size, print direction, print quality, etc.) are transmitted to the printer 100 together with the print data. After the print request, this process ends.

  On the other hand, if manual duplex printing is set (S101: YES), the print data is filed in units of pages (S102). Next, it is confirmed whether or not the total number of pages is 1 (S103). If the total number of pages is 1 (S103: YES), only printing on the front side is necessary, and printing on the back side is not necessary. Therefore, the print data for the first page is transmitted in the same manner as the normal print request (S104), and this process is terminated. If the total number of pages is not 1 (S103: NO), printing on the back side is required. Therefore, a print request for manual duplex printing in S121 is made.

[Manual duplex request processing]
FIG. 7 shows the processing procedure of the print request for manual duplex printing in S121. First, a paper direction instruction screen for instructing a paper setting direction when printing the back side is displayed on the display of the PC 200 (S201). In this embodiment, the paper is discharged face down. For example, in the case of double-sided printing with short edge binding, the paper cassettes 90 and 91 are fed from the front of the tray and printed on the lower surface when set. Therefore, when the paper is reset, it is instructed that the printed surface is on the upper side and the upper side of the printed surface is on the near side of the tray. Note that the sheet layout differs depending on the sheet conveyance configuration of the apparatus and the setting relating to the binding position (short edge binding or long edge binding), and an appropriate instruction is displayed according to the selected paper feed tray.

  Next, the front side print job is transmitted. Specifically, a job start command is transmitted to the printer 100 (S202). Then, even page print data is extracted in reverse order from the filed print data and transmitted (S203). Then, a job end command is transmitted (S204).

  Next, the print job on the back side is transmitted following the print job on the front side. Specifically, a job start command is transmitted to the printer 100 (S205). Then, secure information including a password is transmitted (S206). Then, the odd page print data is extracted in the normal order from the filed print data and transmitted (S207). Then, a job end command is transmitted (S208).

  Next, it is determined whether or not odd-numbered pages have been printed (S209). That is, it is determined whether or not the reverse side print job is completed. If the odd-numbered page has not been printed (S209: NO), it is determined whether or not an instruction to erase the paper direction instruction screen has been input (S210). The instruction to delete the paper direction instruction screen is performed, for example, by pressing a button to which the deletion instruction in the screen is assigned. If no erasure instruction has been input (S210: NO), the process returns to S209 to wait for the odd-numbered page to be printed.

  When printing of odd pages is completed (S209: YES), or when an erasure instruction is input (S210: YES), the paper direction instruction screen displayed in the process of S201 is erased (S211), and this process is performed. finish.

  In other words, as a manual duplex printing process on the PC side, the front side print job makes a print request as a normal print print job in descending order of even page print jobs. Then, the back side job makes a print request as a print job (secure print job) to which secure information is added by arranging the odd-numbered page print jobs in ascending order. The secure print job is a print whose printing is permitted by the unlock data (in this embodiment, a password), and the print job is in a standby state until the unlock data is input. That is, the print job on the back side of this embodiment is a secure print job in which the paper feed tray is designated.

[Processing on the printer side]
[Print job reception processing]
Next, a print job reception process (an example of an accepting unit and a limiting unit) of the printer 100 will be described with reference to the flowchart of FIG. This process is executed when a job start command output from the PC 200 or the like is received.

  First, various data associated with a print job are received (S301). The received data includes print data and setting information (paper size, designated tray, manual duplex printing settings, etc.).

  Next, it is determined whether or not the paper feed tray (designated tray) designated in the print job is being restricted (S302). In the printer 100, use of a specific paper feed tray is restricted by a restriction process (S403 in FIG. 9) described later. Therefore, it is determined whether or not the designated tray of the received print job is the target of restriction processing.

  If the designated tray is being restricted (S302: YES), the print job cannot be printed. Therefore, the data of the print job is stored in the RAM 33 or NVRAM 34 as the last standby data having the lowest print priority (S311), and this process ends.

  On the other hand, if the designated tray is not being restricted (S302: NO), it is determined whether the received print job is a secure print job (S303). If it is a secure print job (S303: YES), the secure print job data is stored in the RAM 33 or NVRAM 34 as the first standby data with the highest print priority (S321). Then, the fact that the secure print job has been received is notified (S322), and this processing is terminated. Examples of the notification method include display on the display unit 41 and pronunciation of a warning sound. On the other hand, if the job is not a secure print job (S303: NO), normal print processing is performed (S304), and this processing is terminated.

[Secure Print Processing]
Next, secure printing processing (an example of input means, printing means, restriction means, and instruction means) of the printer 100 will be described with reference to the flowchart of FIG. This process is executed when a secure print job is received.

  First, a password input screen as shown in FIG. 10 is displayed on the display unit 41, and password input is accepted (S401). Then, it is determined whether or not the passwords match (S402). If the passwords do not match (S402: NO), an error message indicating that the passwords do not match is displayed (S411), and this process ends. Note that the password may be input only once or a plurality of retries may be possible.

  If the passwords match (S402: YES), the process proceeds to a restriction mode that restricts the use of the designated tray of the secure print job by another print job (S403). As a result, the designated tray cannot be used from another print job until the restriction mode is canceled.

  After shifting to the restriction mode, a print resumption instruction screen for notifying an instruction for replacing the paper as shown in FIG. 11 and receiving an input of a print start instruction for the back side is displayed on the display unit 41 (S404). That is, a notification is made that a sheet having a desired image printed on its surface (hereinafter referred to as “desired sheet”) is set on the designated tray. In this embodiment, the input of one of the buttons 42 is received using the start key as an instruction trigger for restarting printing and the stop key as an instruction trigger for stopping printing (S405, S406).

  When the start key is pressed (S406: YES), the print data waiting at the head, that is, the print data of the secure print job stored in the process of S321 is printed (S407). Thereby, a desired image is printed on the back surface of the desired paper. After the process of S407 or when the stop key is pressed (S405: YES), the restriction mode is canceled (S408). As a result, printing on the designated tray becomes possible.

  Next, it is determined whether there is standby data (S409). That is, it is determined whether or not there is a print job that has been received during the restriction mode and has entered a standby state. If there is standby data (S409: YES), the standby data is printed (S410). As a result, all the print jobs that have become standby data are printed following the secure print job. After the processing of S410 or when there is no standby data (S409: NO), this processing is terminated.

  That is, in this embodiment, when performing manual double-sided printing, the PC 200 side requests printing of the front side with a normal print job, and requests printing of the back side with a secure print job following the front side print job. On the printer 100 side, after executing the front side print job, the printer 100 waits for the password entry of the back side secure print job. At this time, other users who do not know the password cannot execute the print job on the back side. After entering the password, the mode shifts to the restricted mode, and other print jobs with the specified tray set are put on standby. Then, the desired paper is set on the designated tray and printed on the desired paper. As a result, printing on the desired paper is reliably performed, and a desired printed matter of double-sided printing is reliably obtained.

  In this embodiment, if the designated tray is not restricted, printing can be performed as usual. That is, even if the use of a specific tray is restricted by a secure print job, the secure print job can be overtaken (so-called overtake printing) by another tray. Therefore, the exclusive state of the printer 100 of the user who requested manual duplex printing is avoided, and other users are not inconvenienced.

  In this embodiment, secure printing is performed only for printing on the back surface, but secure printing may also be performed for printing on the front surface. In this way, by requesting the password for the surface, it is possible to reduce the possibility of others seeing the printed material even when the surface is printed. It should be noted that the front side printing can be realized as secure printing by sending the front side secure information as the processing of S251 after sending the front side job start command as shown in FIG. At this time, the password of the front side secure print job transmitted in the process of S251 is made the same as the password of the back side secure print job transmitted in the process of S206. As a result, it is possible to reduce the trouble of inputting the password. In addition, by using a common password, it is possible to reduce human error such as the user forgetting the password and storing the password on the front side and the password on the back side incorrectly. FIG. 12 is an application example of FIG. 7, and the same step numbers are assigned to similar processes.

[Second form]
Next, a printer having only one paper feed tray will be described as a second embodiment. The printer of this embodiment has only one paper feed tray, and no paper feed tray other than that paper feed tray is designated. For this reason, when overtaking printing of other print jobs is permitted, paper is fed from the same paper feed tray, and printing on a desired paper is not guaranteed. Therefore, a process that prevents overtaking printing is performed. This is different from the first embodiment in which a plurality of paper feed trays are provided and overtaking printing is permitted. Since the processing on the PC side is the same as that in the first embodiment, the description thereof is omitted.

[Processing on the printer side]
[Print job reception processing]
First, the print job reception process will be described with reference to the flowchart of FIG. The same processes as those in the first embodiment are denoted by the same reference numerals as those in the first embodiment.

  In the print job reception process of this embodiment, after receiving various data associated with the print job (S301), it is determined whether or not the secure print job is stored (S331). That is, in this embodiment, since overtaking printing is not performed, if a secure print job is being stored, printing of other print jobs is restricted until the secure print job is printed. Therefore, if the secure print job is stored (S331: YES), the print job data is stored as the last standby data (S311).

  On the other hand, if the secure print job is not stored (S331: NO), it is determined whether the received print job is a secure print job (S303), and if it is a secure print job (S303: YES), The secure print job data is stored as the first standby data (S321). On the other hand, if the job is not a secure print job (S303: NO), normal print processing is performed (S304).

[Secure Print Processing]
Next, the secure printing process will be described with reference to the flowchart of FIG. In addition, about the process similar to a 1st form, the code | symbol similar to a 1st form is attached | subjected. This embodiment is different from the first embodiment in that there is no transition process to the restriction mode and no cancellation process and that the password match is a trigger for starting the printing of the secure print job.

  First, a paper replacement instruction is notified (S421). Then, the input of the password is accepted (S401), and if the passwords match (S402: YES), the print data waiting at the head, that is, the print data of the secure print job stored in the process of S321 is printed (S407). ). Thereby, a desired image is printed on the back surface of the desired paper. Thereafter, it is determined whether or not there is standby data (S409). If there is standby data (S409: YES), the standby data is printed (S410), and this process is terminated.

  That is, in this embodiment, all the print jobs are set in a standby state while the secure print job is being saved. Therefore, there is no need for a transition process to a restriction mode for restricting the use of a specific paper feed tray and a release process. Then, after executing the front side print job, it waits for the password input of the back side secure print job. The user resets the desired paper in the designated tray and inputs the password. The printer prints the desired paper after verifying the password. As a result, a double-sided printed material can be reliably obtained, and normal printing processing can be performed after secure printing.

  Not only the number of paper feed trays of the printer but also all other jobs after accepting a secure print job as in the present embodiment have the following advantages. That is, when another print job is overtaken during manual duplex printing (specifically, between the preceding job and the succeeding job), it is difficult to determine which printed matter is the target for manual duplex printing. If another job before the succeeding job is to be executed for a long time, the subsequent job is awaited. Therefore, at least a period from when a secure print job is received until the start of printing of the secure print job is instructed can be avoided by putting other print jobs in a standby state. In other words, it is convenient for users who have requested manual duplex printing.

  As described above in detail, the printer 100 restricts the use of other print jobs from the designated tray during the period during which secure print job data is received. As a result, other print jobs cannot use the paper set in the designated tray during that period. The secure print job starts printing when a password is input. For this reason, it is possible to avoid execution of printing by another user for the secure print job in the standby state. Therefore, it is possible to prevent the paper set on the designated tray from being used by another person and to print on the desired paper reliably.

  In the manual duplex printing according to the embodiment, after the front side printing, the back side print job is in a standby state. Therefore, the time to turn the paper over is obtained. As a result, even if a front-side print job and a back-side print job are continuously requested by a single print instruction, an appropriate printed matter can be obtained by setting the reversed paper before the back-side printing. Therefore, the user only has to print once, and there is no need to return to the PC 200 and perform operations in the middle of processing.

  Note that this embodiment is merely an example, and does not limit the present invention. Therefore, the present invention can naturally be improved and modified in various ways without departing from the gist thereof. For example, the present invention is not limited to a printer, and can be applied to any apparatus having a printing function, such as a multifunction machine or a copier. Further, the image forming method of the image forming unit is not limited to the electrophotographic method, and may be an ink jet method. Further, even if a color image can be formed, it may be dedicated to a monochrome image.

  Further, in the first embodiment, when a plurality of paper feed trays are provided, overtaking printing is permitted. However, even if a plurality of paper feed trays are provided, overtaking printing is performed as in the second embodiment. The configuration may not be permitted. Further, it is possible to allow both the restriction of only a specific paper feed tray and the restriction of all the paper feed trays in the restriction mode, and the user may select them. This improves user convenience.

  In the embodiment, the password is unlocked as unlocking data, but the unlocking method is not limited to the password. For example, unlocking may be performed without manual input by RFID communication.

  In the embodiment, the print job requested to be printed on the designated tray during the restriction mode is set in the standby state. However, the method for restricting execution of the print job is not limited to this. For example, the acceptance of the print job may be rejected, and the rejection may be returned to the PC that has requested printing.

  The present invention is not limited to manual duplex printing. For example, the present invention can be applied to a sheet on which specific information is printed on the front surface, and information associated with the information is printed on the front surface of the same sheet or printed on a special or dedicated sheet. That is, the present invention is effective even for a printing apparatus that does not have a duplex printing function.

1 is a perspective view illustrating a schematic configuration of a printer according to a first embodiment (a plurality of paper feed trays). It is a figure which shows the connection structure of a printer and PC. FIG. 2 is a conceptual diagram illustrating a schematic configuration of an image forming unit of a printer. FIG. 2 is a block diagram illustrating an electrical configuration of a printer. It is a flowchart which shows the procedure of the print request on the PC side. FIG. 9 is a diagram illustrating an example of a setting dialog for manual duplex printing. It is a flowchart which shows the procedure of the manual duplex printing request | requirement by the side of PC. 6 is a flowchart illustrating a procedure of job reception processing on the printer side. 6 is a flowchart illustrating a procedure of secure printing processing on the printer side. It is a figure which shows an example of the password input screen by the side of a printer. 6 is a diagram illustrating an example of a print resumption instruction screen on the printer side. FIG. It is a flowchart which shows the procedure of the manual duplex printing request | requirement by the side of PC of an application example (double-sided secure printing). 10 is a flowchart illustrating a job reception process procedure on the printer side according to a second embodiment (one sheet feeding tray). 10 is a flowchart illustrating a procedure of secure printing processing on the printer side according to a second embodiment (one sheet feeding tray).

Explanation of symbols

DESCRIPTION OF SYMBOLS 10 Image forming part 20 Scanner part 30 Control part 41 Display part 42 Button group 50 Process part 90,91 Paper feed tray 100 Printer 200 PC

Claims (7)

A receiving unit for designating a paper feeding unit for feeding paper and receiving a print job (specific print job) associated with unlocking data permitting printing;
An input means for inputting unlocking data;
Printing means for feeding paper from a paper supply unit designated by a specific print job permitted to be printed by the unlocking data input by the input means, and printing an image of the specific print job on the paper;
Limiting means for restricting paper feeding from a paper feeding unit designated by the specific print job from another print job when the specific print job is received by the receiving means. Characteristic printing device. The printing apparatus according to claim 1,
The printing apparatus according to claim 1, wherein the specific print job is a subsequent job in manual duplex printing that outputs two print jobs, a preceding print job (previous job) and a subsequent print job (subsequent job). The printing apparatus according to claim 2,
A printing apparatus, wherein unlocking data is also associated with a preceding job in manual duplex printing. The printing apparatus according to claim 3,
A printing apparatus, wherein unlock data associated with a preceding job and a succeeding job in manual duplex printing is the same. In the printing apparatus according to any one of claims 1 to 4,
A printing apparatus that receives and executes a print job from a paper feeding unit that is not restricted by the restriction unit. In the printing apparatus according to any one of claims 1 to 4,
A printing apparatus characterized in that another print job is set to a standby state or a reception refusal state until at least unlocking data corresponding to the specific print job is input after the specific print job is received. The printing apparatus according to any one of claims 1 to 6,
An instruction means for instructing start of printing of a specific print job permitted to be printed by the unlocking data;
From the time when unlocking data corresponding to the specific print job is input until the start of printing of the specific print job is instructed by the instruction unit, another print job is set in a standby state or an acceptance refusal state. A printing apparatus characterized by the above.

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