JP2000255142A - Printer - Google Patents

Abstract

PROBLEM TO BE SOLVED: To obtain a printer in which a desired print can be finished in a short time. SOLUTION: The printer 10 comprises sheet discharge stackers 28, 30, 32 for stacking recovery print condition confirming sheets independently from a normal sheet discharge stacker group 26 for stacking printed sheets. When print processing temporarily interrupted due to sheet jam, or the like, is restarted, a print image forming section 18 and an IOT control section 20 control the operation such that a specified number of sheets printed after restart are stacked in any one of the recovery confirmation sheet discharge stackers 28, 30, 32.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a printing apparatus,
More specifically, the present invention relates to a printing apparatus capable of temporarily stopping printing when a problem such as a jam occurs during ejection of printed paper and restarting printing thereafter.

[0002]

2. Description of the Related Art Generally, in a printing apparatus such as a laser beam printer or an ink jet printer for printing on cut paper, when a paper jam occurs in the apparatus, the printing operation is temporarily stopped and an operator is notified of the fact. Then, when the operator clears the jammed paper and instructs to resume printing, the operator resumes printing (performs recovery printing).

[0003] When recovery printing is performed in this type of printing apparatus, troubles such as printing failure and page sequence failure are likely to occur, so it is necessary for an operator to confirm whether recovery printing has been performed correctly. was there.

As a technique for efficiently performing this checking operation, in the technique described in Japanese Patent Application Laid-Open No. 4-247980, when an error occurs during printing, the printed paper after printing is discharged is discharged. Previously, a stacker for stacking printed paper was moved in a predetermined direction. This allows the operator to easily recognize the first page after resuming printing, since the printed paper after resuming printing is stacked at a position different from the printed paper that was previously stacked on the stacker. It is possible to efficiently check whether or not the recovery printing has been correctly performed.

[0005]

However, according to the technique described in Japanese Patent Application Laid-Open No. Hei 4-247980, it is possible to efficiently confirm whether or not recovery printing has been correctly performed as described above. If printing has not been performed correctly, it is necessary to print the entire job again, and there is a problem that it takes time to complete all desired printing.

This problem is particularly serious in a printer in which the stacker is a large-capacity closed stacker (a stacker in which sheets cannot be taken out while the sheets are being stacked). That is, in such a printer, the printing result cannot be confirmed until all the printing is completed, and the time required for all the printing to be completed is long, so that the recovery printing is not performed correctly. In this case, the time required to complete all desired printing is significantly increased. Further, in this case, since a large number of sheets are printed again, the number of wasteful sheets also increases.

The present invention has been made to solve the above problems, and has as its object to provide a printing apparatus capable of completing desired printing in a short time.

[0008]

According to another aspect of the present invention, there is provided a printing apparatus, comprising: a first stacking unit for stacking printed sheets; and a second stacking unit for stacking printed sheets. Instruction input means for inputting an instruction for resuming printing that has been temporarily stopped; and when an instruction for resuming printing is input by the instruction input means, Control means for stacking printed sheets of the sheets to be printed, and controlling the second stacking means to stack an arbitrary number of printed sheets from the top of the sheets to be printed after resuming printing. Have.

The printing apparatus according to the first aspect of the present invention includes a first stacking unit and a second stacking unit for stacking printed sheets, and an instruction for restarting the temporarily stopped printing is provided by the instruction inputting unit. If entered, the first
In the stacking means, printed sheets of all the sheets to be printed after printing restart are stacked, and in the second stacking means, an arbitrary number of printed sheets from the top of the sheets to be printed after printing restart are stacked. Is controlled by the control means.

As described above, according to the printing apparatus of the first aspect, when an instruction to restart printing is input, the first stack unit prints all sheets to be printed after printing is restarted. The control unit controls the stacking unit to stack an arbitrary number of printed sheets from the top of the sheet to be printed after resuming printing in the second stacking unit. Inconveniences such as a defect and a page sequence defect can be found early by checking the printed sheets stacked on the second stacking means, and desired printing can be completed in a short time.

According to a second aspect of the present invention, in the first aspect of the present invention, the number input means for inputting the number of printed sheets to be stacked on the second stack means after printing is resumed. Further, the control means may include the sheet number input means when the second stacking means is a stacking means that cannot take out sheets stacked in a stack of printed sheets, that is, when the second stacking means is a so-called closed stacker. It is preferable to control so that the stacked sheets can be taken out from the second stacking unit after the stacking of the printed sheets for the number of sheets input in the second stacking unit is completed. .

According to a third aspect of the present invention, in the first or second aspect of the present invention, the control unit is configured to perform the operation after the completion of stacking of the printed sheets on the second stacking unit. It is preferable to stack printed paper on the first stacking means.

[0013]

Embodiments of the present invention will be described below in detail with reference to the drawings.

[First Embodiment] First, referring to FIG.
The configuration of the printing apparatus 10 according to the first embodiment will be described. As shown in FIG. 1, the printing apparatus 10 according to the first embodiment includes an input / output device 12 including a keyboard and a display. The input / output device 12 is connected to a data input unit 16 via a user interface unit 14. It is connected to the.

The data input section 16 is connected to a print image forming section 18, and the print image forming section 18 is connected to an IOT (Image Output Terminal) control section 20.
Is connected to the IOT 22 via the.

On the other hand, the IOT 22 has a paper supply port feeder group 24 composed of a plurality of paper supply port feeders,
A paper discharge destination stacker group 26 composed of a plurality of paper discharge destination stackers, and three recovery confirmation paper discharge stackers 28, 30 and 32 are provided. IOT2
2 takes out paper from the paper supply port feeder group 24 based on various information received from the IOT control unit 20, performs printing processing on the taken out paper, and prints the printed paper on the paper discharge destination stacker group 26 and the like. It has the function of discharging to

On the other hand, the data input unit 16 includes a data input device 34 such as a tape device and an input data storage device 36,
The print image forming unit 18 includes the input data storage device 3
6 and the print image storage device 38, and the IOT control unit 20 is connected to the print image storage device 38.

In the printing apparatus 10 according to the present embodiment, if a jam occurs in the IOT 22 and the cycle must be once stopped (printing stopped), the operator removes the jammed paper and then operates the input / output device 12 to remove the jammed paper. After inputting a print restart instruction via the user interface unit 14 via the keyboard, the number of output recovery recovery sheets and the output destination of the recovery confirmation sheet (any one of the recovery confirmation sheet discharge stackers 28, 30, and 32) described later. Perform the specified input.

The sheet discharge destination stacker group 26 is the first of the present invention.
Recovery stack paper ejection stacker 2
8, 30, and 32 correspond to the second stack means of the present invention, the input / output device 12 and the user interface section 14 correspond to the instruction input means and the number of sheets input means of the present invention, and the print image forming section 18 and the IOT control section 20 correspond to the second stack means. Each corresponds to the control means of the invention.

Next, the printing apparatus 10 according to the first embodiment will be described.
The operation of will be described. In the printing apparatus 10, printing processing is performed in the following three stages.

First step: Data to be printed is read from the data input device 34 and stored in the input data storage device 36.

Second stage: The input data stored in the input data storage device 36 is read out to form a print image, and then stored in the print image storage device 38.

Third stage: print image storage device 38
Is read out and printed, and is discharged to a stacker in a specified form.

First, the outline of the first stage processing will be described with reference to FIG.

The data input unit 16 reads raw data from a data input device 34 such as a tape device based on a data input start instruction input from the user interface unit 14, and stores the raw data in an input data storage device 36. In addition,
As the data input device 34, in addition to the tape device, a bus & tag device and various network clients (TCP / IP)
Etc.) can be applied.

When a certain amount of raw data is stored in the input data storage device 36, the data input unit 16 instructs the print image forming unit 18 to start a print image forming process. Note that the processing in the first stage is not directly related to the present invention, and thus detailed description is omitted.

Next, the processing in the second stage will be described with reference to FIG.
This will be described with reference to FIG. FIG. 2 is a flowchart showing a flow of processing executed in the print image forming unit 18 after the power of the printing apparatus 10 is turned on. If a paper jam occurs during printing by the IOT 22, the print image forming unit 18 terminates the processing shown in FIG. 2 and stands by, the operator removes the jammed paper, and the keyboard of the input / output device 12. When a print restart instruction is input via the user interface unit 14 by the user, the interrupt processing shown in FIG. 4 is executed.
This will be described later.

In step 100 of FIG.
Waiting for an instruction to start the print image forming process from the input data storage device 36 in the next step 102
Then, in step 104, a print image corresponding to each sheet (separate front and back in the case of double-sided printing) is formed using the read input data.

As shown in FIG. 3, the print image in the printing apparatus 10 of the present embodiment is a paper output instructing the raster image 50 corresponding to the resolution of the IOT 22 and the output form of the paper for transferring the raster image. It is configured by the form control information 52.

The sheet output form control information 52 includes a “pointer to previous page information” indicating a pointer to the sheet output form control information 52 of the previous page on the print image storage device 38 and the next page on the print image storage device 38. "Pointer to next page information" indicating a pointer to the sheet output form control information 52, "raster image pointer" indicating a raster image pointer on the print image storage device 38, and “Paper number” indicating the corresponding paper number, “Single-sided / double-sided printing instruction” indicating one-sided printing / two-sided printing, “copy number” indicating the number of copies to be printed, and “Collat” indicating collating / non-collating.
e / Un-collate (collate / non-collate) instruction "," paper supply port instruction "indicating which paper supply port feeder to use, and" paper output port instruction indicating which paper discharge destination stacker to use. "Recovery confirmation paper output destination" indicating which recovery confirmation paper discharge stacker to use, "recovery confirmation paper number" indicating the paper number of the recovery confirmation paper corresponding to the paper output form control information 52, and recovery confirmation. "Recovery completion pointer" indicating a pointer to the paper output form control information 52 on the print image storage device 38 corresponding to the paper to be printed next after the paper output is completed.
Are configured by each field.

Note that the "recovery confirmation paper output destination"
The fields “recovery confirmation paper number” and “recovery completion pointer” are particularly relevant to the present invention, and these fields will be described in further detail. The stacker holds a stacker (a stacker instructed via the user interface unit 14) that outputs a recovery confirmation sheet that is output in advance. In the present embodiment, any one of the recovery confirmation sheet discharge stackers 28, 30, and 32 is used. Will be retained.

The "recovery confirmation sheet number" field holds the sheet number used in the interface with the IOT 22. Since the paper output form control information 52 for which the recovery output is specified is used to control both the page of the recovery confirmation paper and the page of the normal output paper, two types of paper numbers are used to identify each page. Is required.

Further, the "recovery completion pointer" field is a pointer used to return to the first page to be printed after printing is resumed and to perform normal printing after outputting the recovery confirmation sheet.

At this time, 0 (zero) is set in each of the fields of “output destination of recovery confirmation sheet”, “recovery confirmation sheet number”, and “recovery completion pointer”.

In the next step 106 (see FIG. 2), the print image formed in the above step 104 is stored in the print image storage device 38. In the next step 108, the print image stored in the print image storage device 38 has a predetermined amount. It is determined whether or not it has reached a predetermined amount (if the determination is affirmative), the process proceeds to step 110,
When the predetermined amount has not been reached (in the case of a negative determination), the process proceeds to step 114.

In step 110, it is determined whether or not a print start instruction has already been issued to the IOT control unit 20. If not (in the case of a negative determination), the process proceeds to step 112 and the IOT control unit 20 is instructed. Then, after notifying the sheet output form control information 52 of the print start page (in this case, the first page) and instructing the start of printing, the process proceeds to step 114. The process proceeds to step 114 without performing.

In step 114, it is determined whether or not the processing in steps 102 to 112 for all input data has been completed. If not (in the case of a negative determination), steps 102 to 112 are performed until the processing is completed. This process is terminated after the process of (1) is repeatedly executed.

Note that the IOT control unit 20 completes paper output including information indicating the paper number of the discharged paper every time printing of one page is completed and the printed paper is discharged to the stacker, as described later. The information is transmitted to the print image forming unit 18.
If the paper output completion information is received from the IOT control unit 20 while the processing of steps 102 to 114 is repeatedly executed, the page corresponding to the paper number included in the received paper output completion information The raster image 50 and the paper output form control information 52 are deleted from the print image storage device 38. This enables continuous printing of multiple pages without increasing the storage capacity of the print image storage device 38.

Next, with reference to FIG. 4, the interrupt processing executed when the print image forming unit 18 inputs an instruction to resume printing from the operator will be described.

In step 200 of the figure, the system waits for reception of information (the number of output sheets of the recovery confirmation paper and the output destination of the recovery confirmation paper) input by the operator via the user interface unit 14.

In the next step 202, based on the information indicating the sheet number included in the sheet output completion information last received from the IOT control unit 20 immediately before the occurrence of the jam, the first entry after the print restart (after the print restart) Paper output form control information 5 corresponding to the page to be printed first
2) is determined.

That is, as shown in FIG. 5, when the sheet number included in the sheet output completion information last received from the IOT control unit 20 is n, the sheet output form control information 52 corresponding to the sheet number n Is determined by searching all the paper output form control information 52 stored in the print image storage device 38, and the “pointer to next page information” of the paper output form control information 52 determined next. The head address of the paper output form control information 52 corresponding to the next page (n + 1 page) is obtained by referring to the field, and the paper output form control information 52 corresponding to the head address is determined as the head entry after recovery is resumed. .

In the next step 204, the above step 2
02 from the first entry determined in step 02
, The fields of “recovery confirmation paper output destination”, “recovery confirmation paper number”, and “recovery completion pointer” are rewritten for the number of entries (the number of pages) obtained as the number of recovery confirmation paper output.

More specifically, for example, the output number of the recovery confirmation paper obtained in step 200 is 5, the output destination of the recovery confirmation paper is the recovery confirmation paper discharge stacker 32, and the top entry determined in step 202 is page n + 1. As shown in FIG. 6, the “recovery confirmation paper output destination” field of the paper output form control information 52 corresponding to five pages from page n + 1 indicates the recovery confirmation paper discharge stacker 32 as shown in FIG. ', And the "recovery confirmation paper number" field is changed to n-4, n-3, n-2, n-
1, n, and further, the “recovery completion pointer” field of the paper output mode control information 52 corresponding to the last page (page n + 5) of the recovery confirmation paper is rewritten to the head address of the head entry (page n + 1).

In the "recovery confirmation sheet number" field, a numerical value which does not include the sheet number to be printed after the printing is resumed may be written. In the present embodiment, the output has already been completed before the occurrence of the jam as described above. Make sure that the specified paper number is applied.

When the rewriting of the entry is completed, in the next step 206, the IOT control unit 20 is notified of the paper output form control information 52 of the print resumption page (in the example of FIG. 6, page n + 1), and instructs the IOT control to restart the printing. In the next step 208, after the formation of the print image interrupted due to the occurrence of the jam is restarted, this interrupt processing is ended.

By the processing of steps 206 and 208, the IOT control unit 20 resumes the print processing that has been stopped due to the occurrence of the jam, and completes the paper output every time the printed paper is discharged to the stacker. The information is output to the print image forming unit 18.

When the print image forming unit 18 receives the sheet output completion information from the IOT control unit 20 while forming a print image, the print number and the sheet output number included in the received sheet output completion information are used. By comparing both the “paper number” field and the “recovery confirmation paper number” field of the form control information 52, the raster image 50 of the page where the paper number included in the paper output completion information and the value of the “paper number” field are equal A process of deleting the sheet output form control information 52 from the print image storage device 38 is performed. This enables continuous printing of multiple pages without increasing the storage capacity of the print image storage device 38.

FIG. 7 shows an outline of the flow of the processing by the print image forming unit 18 (the processing described with reference to FIGS. 2 and 4). As shown in the figure,
The print image forming unit 18 sends a print image (paper output form control information 5) of the first page (print start page) to the IOT control unit 20 at the start of normal printing.
2) The start address A on the print image storage device 38 is notified. On the other hand, every time the output of the printed paper to the stacker is completed, the IOT control unit 20 notifies the print image forming unit 18 of the paper output completion information including the information indicating the paper number of the paper.

At this time, for example, if a jam occurs at the time when the output of the sheet of the sheet number n is completed, the print image forming unit 18 outputs the sheet output completion including the information indicating the sheet number n from the IOT control unit 20. Information has been received.

At this point, if the print image forming unit 18 has formed and stored a print image up to the sheet corresponding to the sheet number m, the print image forming unit 18
When the print is resumed, the IOT control unit 20 is notified of the start address B of the print image (paper output form control information 52) of the first page (print resume page) after the print is resumed on the print image storage device 38 and the print is resumed. , The formation and storage of the print image of the (m + 1) th page and thereafter are started.

That is, conventionally, the formation and storage of the print image are restarted from the sheet on the page next to the sheet whose print output has been completed when the jam occurs in general. The print image forming unit 18 resumes the formation and storage of the print image from the sheet on the page next to the sheet on which the formation and storage of the print image has been completed at the time of the occurrence of the jam. The time required for forming and storing the print image after the restart can be reduced.

Next, the processing in the third stage will be described with reference to FIG.
This will be described with reference to FIG. FIG. 8 is a flowchart showing a flow of processing executed in the IOT control unit 20 after the power of the printing apparatus 10 is turned on.

First, in step 300, a print start or print restart instruction from the print image forming unit 18 is waited for, and in the next step 302, the sheet output form control information 52 notified from the print image forming unit 18 is received. "Recovery confirmation paper output destination" field is 0
It is determined whether it is (zero) or not. If it is 0 (if the determination is affirmative), the process proceeds to step 304 and the “paper output port instruction”, “paper number”,
Step 3 after notifying the IOT 22 of each field information of "paper supply port information" and "single / double-sided printing information"
Move to 10.

On the other hand, if it is determined in step 302 that the "recovery confirmation paper output destination" field is not 0 (in the case of a negative determination), the process proceeds to step 306, and the "recovery paper output form control information 52" The IOT 22 is notified of the field information of “Confirmation paper output destination”, “Recovery confirmation paper number”, “Paper supply port information”, and “Simplex / Duplex printing information”. After the field is cleared (rewritten to 0), the process proceeds to step 310.

When the IOT 22 receives each piece of field information by the processing of step 304 or step 306, it requests the IOT control unit 20 to output a raster image corresponding to the field information.

Therefore, in the next step 310, this IO
It waits for the reception of a raster image output request from T22, and then proceeds to step 312 to execute IOT2 based on the contents of the "raster image pointer" field.
2 to the raster image.

When the IOT 22 receives a raster image from the IOT control unit 20, it performs print processing for one sheet based on the raster image and each of the above-mentioned field information, and when the output of printed paper to the stacker is completed. Then, information indicating that fact is transmitted to the IOT control unit 20.

Therefore, in the next step 314, the IOT 22
After waiting for the completion of the output of the printed paper to the stacker, the next step 316 transmits to the print image forming unit 18 the paper output completion information including the information indicating the paper number of the paper whose output has been completed. .

In the next step 318, it is determined whether or not output of all pages of paper to the stacker has been completed based on whether or not the paper output form control information 52 is stored in the print image storage device 38. If the judgment has been made (if the judgment is affirmative), the present processing is ended. If the judgment has not been completed (if the judgment is negative), the processing shifts to step 320.

In step 320, it is determined whether or not the value of the "recovery completion pointer" field of the sheet output form control information 52 corresponding to the sheet whose output has been completed immediately before is 0 (zero). (In the case of an affirmative determination), the process proceeds to step 322 and the sheet output form control information 52 of the next sheet is set based on the “pointer to next page information” field.
After that, the process returns to step 302.

On the other hand, if it is determined in step 320 that the value of the “recovery completion pointer” field is not 0 (in the case of a negative determination), the process proceeds to step 324 and the “recovery completion pointer” of the paper output mode control information 52 After obtaining the sheet output form control information 52 of the next sheet based on the "" field, the process proceeds to step 326 to clear (rewrite to "0") the "recovery completion pointer" field, and then returns to step 302.

That is, in the processing of steps 320 to 326, as shown in FIG. 9, the "pointer to next page information" field or the "recovery completion pointer" Field.

The above steps 302 to 326
Is repeated until all the sheet output form control information 52 is exhausted, so that in the case of normal printing, the printed sheets of all the sheets to be printed are set in the stacker designated in the "sheet discharge instruction" field. If a paper jam occurs during printing and printing is resumed, the specified number of printed recovery confirmation sheets from the print resume page are printed in the stacker specified in the "Recovery confirmation paper output destination" field. After that, all printed sheets to be printed after the print restart page are output to the stacker specified in the “sheet discharge port instruction” field.

As described in detail above, in the printing apparatus according to the first embodiment, the printed paper after printing is resumed is output to the recovery confirmation paper discharge stacker provided separately from the normal stacker. Inconvenient recovery printing paper, page sequence failure, and other inconveniences can be detected early by checking the recovery confirmation paper output to the recovery confirmation paper output stacker, and the desired print can be completed in a short time. can do.

In the printing apparatus according to the first embodiment, the recovery confirmation sheet can be output without re-creating the raster image once created, so that the required time after resuming printing can be shortened. .

Further, in the printing apparatus according to the first embodiment, the normal recovery print is performed after outputting the specified number of recovery confirmation papers to the recovery confirmation paper discharge stacker, so that all the recovery prints are completed. The inconvenience can be found beforehand, and the number of sheets output wastefully can be reduced.

[Second Embodiment] Next, a second embodiment of the present invention will be described. In the second embodiment, a case where the stacker for stacking the recovery confirmation sheets is a closed stacker will be described. The basic configuration of the printing apparatus 10 according to the second embodiment is the same as that of the first embodiment, and a description thereof will be omitted.

First, a process executed by the IOT control unit 20 of the printing apparatus 10 according to the second embodiment will be described with reference to FIG. Steps that perform the same processing as in FIG. 8 in FIG. 10 are assigned the same step numbers, and descriptions thereof are omitted.

As shown in the figure, in the printing apparatus 10 according to the second embodiment, after performing the processing of clearing the “recovery completion pointer” field in step 326, in step 328 the “recovery confirmation sheet output destination” field is used. The only difference from the first embodiment is that the designated recovery confirmation sheet discharge stacker is in an open state (a state in which output sheets can be taken out).

That is, in the second embodiment, since the stacker for outputting the recovery confirmation paper is a closed stacker, it is determined whether or not the output of the recovery confirmation paper is completed. Until you can not do.

Therefore, the printing apparatus 10 according to the second embodiment
In this configuration, the output of the recovery check paper is set to the open state when the output of the recovery check paper is completed, so that the print state of the recovery check paper can be checked immediately after the output of the recovery check paper is completed.

As described in detail above, in the printing apparatus according to the second embodiment, the same effects as those of the first embodiment can be obtained, and the recovery confirmation is performed immediately after the output of all the recovery confirmation paper is completed. Since the paper discharge stacker is in the open state, the print state of the recovery confirmation paper can be checked at an early stage, and the desired print can be completed in a shorter time.

In each of the above embodiments, the case where the value of the “recovery confirmation sheet number” field rewritten by the print image forming unit 18 when printing is resumed is the sheet number of the sheet that has already been output before the occurrence of the jam. Although described, the invention is not limited to this,
The value of the “recovery confirmation sheet number” field at the time of resuming printing may not be the sheet number to be printed after resuming printing, and may be, for example, a negative value.

[0075]

According to the present invention, when an instruction to restart printing is input, printed sheets of all sheets to be printed after printing restart are stacked in the first stacking means, and The stacking means is controlled so that an arbitrary number of printed sheets are stacked from the top of the sheet to be printed after printing is resumed. Can be found at an early stage by checking the printed sheets stacked on the second stacking means, and the desired printing can be completed in a short time.

[Brief description of the drawings]

FIG. 1 is a block diagram illustrating a schematic configuration of a printing apparatus according to a first embodiment.

FIG. 2 is a flowchart illustrating a flow of processing executed in a print image forming unit of the printing apparatus according to the first embodiment.

FIG. 3 is a schematic diagram illustrating a configuration of a print image.

FIG. 4 is a flowchart illustrating a flow of an interrupt process executed in a print image forming unit of the printing apparatus according to the first embodiment.

FIG. 5 is a schematic diagram for explaining a method of determining a head entry when printing is resumed.

FIG. 6 is a schematic diagram for explaining rewriting contents of paper output mode control information when printing is resumed.

FIG. 7 is a schematic diagram for explaining the outline of the processing flow of a print image forming unit.

FIG. 8 is a flowchart illustrating a flow of a process executed in an IOT control unit of the printing apparatus according to the first embodiment.

FIG. 9 is a schematic diagram for explaining processing in an IOT control unit;

FIG. 10 is a flowchart illustrating a flow of processing executed in an IOT control unit of a printing apparatus according to a second embodiment.

[Explanation of symbols]

Reference Signs List 10 printing device 12 input / output device (instruction input means and number input means) 14 user interface section (instruction input means and number input means) 16 data input section 18 print image forming section (control means) 20 IOT control section (control means) 22 IOT 24 Paper feed port feeder group 26 Paper discharge destination stacker group (first stack means) 28 Recovery confirmation paper discharge stacker (second stack means) 30 Recovery confirmation paper discharge stacker (second stack means) 32 Recovery confirmation Paper discharge stacker (second stacking means) 34 Data input device 36 Input data storage device 38 Print image storage device 50 Raster image 52 Paper output form control information

Claims (3)

[Claims] 1. A sheet stacking means comprising a first stacking means for stacking printed sheets and a second stacking means, an instruction inputting means for inputting an instruction to resume printing once stopped, and When an instruction to resume printing is input by the instruction input means, printed sheets of all sheets to be printed after the printing is restarted are stacked in the first stack means, and the second stack means is stacked in the second stack means. Control means for controlling so as to stack an arbitrary number of printed sheets from the top of the sheets to be printed after printing is resumed. 2. The printing apparatus according to claim 1, further comprising a sheet number input unit for inputting the number of printed sheets to be stacked on the second stack unit after restarting printing, wherein the control unit determines that the second stack unit has a printed sheet number. In a case where the stacking means cannot take out the sheets stacked in the stack, the second sheet after the stacking of the printed sheets of the number input by the number inputting means on the second stacking means is completed. 2. The printing apparatus according to claim 1, wherein control is performed such that the stacked sheets can be taken out from the stacking means. 3. The method according to claim 1, wherein the control unit is configured to control the first stack after the stack of the printed sheets on the second stack unit is completed.
The printing apparatus according to claim 1, wherein printed sheets are stacked on the stacking means.