JPS62105658A - Paper sheet jamming processor for print processing system - Google Patents

Abstract

PURPOSE:To eliminate wasteful reprint by providing means for detecting a seam of continuous sheet, means for tracing the seam position and means for detecting sheet jamming, thereby eliminating the retransmission of printing data to a host machine in case of sheet jamming near the seam including the seam. CONSTITUTION:Seam tracing means 50 traces the position of the seam of a sheet from the seam detection output of seam detecting means 26. When a sheet jamming is detected by jam detecting means 35, whether the jam imcludes the seam or not is judged by referring to the seam tracing means. When the fact that the jamming includes the seam is decided by this judgement, the unnecessity of retransmitting printing data is notified to a host machine to cut off the retransmission of the data. If the distance from the seam detecting position to the jamming detecting position is l and the distance of three pages is l2, unnecessity of retransmission is notified as the jamming occurs at any blank page when the seam position P of the seam tracing means is disposed between (l-l2) and (l+l2) at jamming occurrence time, thereby preventing the reprint.

Description

[Detailed Description of the Invention] [Table of Contents] Overview Industrial Field of Application Conventional Technology Problems to be Solved by the Invention Means for Solving the Problems (Fig. 1) Working Examples (a) One Example Explanation of the overall configuration (Figures 2 and 3) (
b) Explanation of the configuration of one embodiment (Figure 4) (C) Explanation of the operation of one embodiment (Figures 5 and 6) (d) Explanation of other embodiments Effects of the invention [Summary] Seam In a print processing system that includes a printing device that prints on continuous paper spliced by a printer, and a post-processing device, there is provided a seam detection means that detects a seam of the continuous paper, a seam tracking means that tracks the seam position, and a post-processing device. By providing a means for detecting a paper jam in the printer, there is no need to retransmit print data to a higher level in the case of a paper jam in the vicinity of a seam, including a seam.

[Industrial application field]

The present invention relates to a print processing system in which continuous paper such as folded paper is printed according to print data from a higher level, and then cut as post-processing and stored as a form. The present invention relates to a paper jam handling method that performs recovery control when a paper jam occurs in post-processing.

Print processing systems that perform processing such as printing and recording while feeding continuous paper are widely used. In such print processing systems, since the processed continuous paper itself is difficult to handle, the continuous paper is cut and stored in a post-processing device.

For example, in the print processing system shown in FIG. 7, the printing device LBP prints page by page on the continuous paper PP sent from the paper supply device PFU according to the print data from the host HO8T, and sends it to the paper post-processing device APP. , paper post-processing device APP cuts the paper into forms and stores them in page units.

[Conventional technology]

In such a print processing system, if the processing speed is improved, it will not take much time to process the standard length continuous paper PP. Therefore, every time a continuous sheet of standard length is processed, the apparatus must be stopped until the next continuous sheet is manually set in the hopper 8TC, which reduces the operating rate of the apparatus.

For this reason, as shown in FIG. 8 (5), the ends of the standard length continuous paper PP are joined by a seam tape PT.

A long continuous sheet is formed and set in the hopper 8TC.

On the other hand, if such long continuous paper is used.

Seam pages with seam tape do not perform printing or other processes well, so they are not printed and are left as blank pages. To control this printing, seam detection holes DH are provided on the seam pages. In Figure 4, three blank pages are created before and after the seam.

The printed continuous paper on which such blank pages have been created is cut and stored in the post-processing device APP.

In such a print processing system, as shown in Fig. 8 (I3), the print data for one page is transferred from the upper HO8T, and the print data for one page is transferred normally. When received, the print data for the next page is transferred, and printing is continuously performed on the continuous paper PP.

On the other hand, since the post-processing device APP performs mechanical operations on paper such as cutting and storing, paper jams are likely to occur. Paper jams are particularly likely to occur when storing paper after cutting, so the post-processing device is equipped with a detection means for detecting paper jams when paper jams occur.

The entire system is stopped.

When such a paper jam occurs, the paper that has become defective due to the jam cannot be used as a printed matter, so it is necessary to reprint it, and all pages after the jam related to the upper HO8T are printed. Requested data retransmission.

[Problem that the invention seeks to solve]

Therefore, in the prior art, if a jam occurs, a retransmission request is issued, so even if a jam occurs on a blank page including the seam portion, a retransmission request is automatically issued.

For this reason, a jam occurs in a blank page including a seam part, and even if the subsequent printed pages are not defective, they can be used, so a resend request is issued and these pages are reprinted.

There is a problem in that unnecessary reprinting is performed.

An object of the present invention is to provide a paper jam handling method for a print processing system that eliminates the need for such wasteful reprinting.

[Means for solving problems]

FIG. 1 is a diagram explaining the principle of the present invention.

According to the invention, seam tracking means are provided.

The position of the seam portion of the paper is tracked from the seam detection output of the seam detection means.

When a paper jam is detected by the jam detection means, the seam tracking means is referred to and it is determined whether the jammed portion includes a seam portion.

If it is determined by this determination that the jammed portion includes a seam portion, a notification is sent to the higher level that the print data does not need to be retransmitted, and the retransmission of the print data is cut off.

[For production]

For example, when there are 6 blank pages (seam pages) including the seam shown in Figure 8, the distance from the seam detection position to the jam detection position is l, and the distance for 3 pages is l.
If there is a risk, the seam position P of the seam tracking means when a jam occurs
between C6-1,'') and (l+2.), the jam occurs on one of the blank pages, and a notification is sent that retransmission is not necessary.
+1. ) If this is the case, the jam does not occur on a blank page, but rather on a printed page, and therefore a resend request is notified.

Therefore, unnecessary retransmission requests can be cut for paper jams that include seams, and reprinting caused by this can be prevented.

〔Example〕

(a) Description of overall configuration of one embodiment FIG. 2 is an overall configuration diagram of a print processing system according to an embodiment of the present invention, and FIG. 3 is an internal configuration diagram thereof.

In the figure, the same parts as those shown in Figs. 1 and 7 are indicated by the same symbols, and 4fi and LBP are printing devices (laser printers). The STC uses a paper hopper to print by electrophotography using a photosensitive drum 10. For example, a super-long paper with a length of about 10,000 m is made by joining three sets of standard continuous paper (B4 size) with a seam tape PT. Continuous folding paper P with shaku feed holes
PFU is a paper supply device that stacks paper P, has a seam detector 26, and supplies continuous paper PP from the paper hopper STC to the lower part of the laser printer LBP, and TVU is a turnover device. It is a mechanism that changes the direction of the printed continuous paper PP discharged from the top of the laser printer LBP by 90 degrees and guides it to an intermediate slitter device to be described later. The printed continuous paper PP from the mechanism TVU is made into two continuous papers PPI and PP2, which are discharged to the buffer unit BFU in the overlapping direction, BFU is a paper buffer unit, and has a jam detection unit JG at the bottom, P
CM is a cutting device, and C8U is a stacker device.

Note that the intermediate slitter device M8U, the cutting device PCM, and the stacker device CPU constitute a paper post-processing device APP.

Therefore, the continuous paper (84 size) PP in the paper hopper STC is introduced via the seam detector 26 by the tractor 25 driven by the motor M4 of the paper supply unit PFU.
It is supplied to the lower part of the laser printer LBP via a guide 27. In the laser printer LBP, the paper supply device PFU
The continuous paper PP from the introduction roller 18. Buffalora17. It is guided to the tractor 11 via the splice table 15, and a latent image formed by the image forming section (charger and laser optical system) 13 is developed by the developing section 14 and transferred to the photosensitive drum 10 by the transfer charger 12. 11, the image is fixed by a fixing device 16, and is ejected by an ejecting roller 19. The tractor 11 is driven by the motor M1 and continuously feeds the paper PP. Therefore, the supplied paper passes through the internal print bus of the laser printer LBP, and the contents of two B5-sized pages are printed on the B4.
They are printed in parallel on one-page paper using electrophotography. The printed continuous paper PP is printed on a laser printer LB.
It is discharged from the upper discharge row 219 of P, and the direction is changed by 90 degrees by the turnover mechanism TVU via the buffer roller BLI.

It is guided to an intermediate slitter device M8U.

In the intermediate slitter device 1M5U, the intermediate slitter 2 is transported while feeding the paper PP with a tractor 20 driven by a motor M2.
1, the 84-size continuous paper is cut in half at the middle part, and the two cut continuous papers PPI and PP2 are discharged by a pair of superposition guides 22 so as to be superimposed.

In the packer unit BFU, the buffer roller 23 facilitates the overlapping operation of the continuous sheets PPI and PP20, and the 85-size continuous sheets PP1. PP2
is guided to the cutting device PCM. In the cutting device PCM, a double-end slitter 3 is fed while feeding two sheets of paper PP1 and PP2 by a feeding tractor 30 driven by a motor M3.
In step 1, cut the edges (feeding holes) of the paper PPI and PP2.

Further bursts 0-732a, 32b, 33a.

33b and the burst cutter 34 perform burst cutting of the sheets PPI and PP2 in page units at the perforation positions.

The sensor 35 detects the paper CP cut into pages and uses it for jam detection.

Finally, the conveyor stacker group [sheet C cut by C8U]
While being conveyed by a conveyor 40, the P is placed against a stack guide 41 and stored in an inverted state.

That is, the continuous paper PP is printed by a laser printer LBP, which is a printing device, and is printed by an intermediate slitter device MSU.
The sheets are cut in half in the longitudinal direction, stacked in two sheets, cut into page units by the cutting device PCM, and stored in the conveyor stacker device C8U in the order of markings. In addition, 42 is a mechanism.

This laser printer LBP is capable of printing at extremely high speeds, for example, 10,000 lines per minute, and therefore has a printing capacity of 200 to 300 sheets per minute.

(b) Description of the configuration of one embodiment FIG. 4 is a configuration diagram of one embodiment of the present invention.

In the figure, the same parts as those shown in Figs. 2 and 3 are indicated by the same symbols, and 50 is a mechanism control section (hereinafter referred to as a mechanical control section). 51 is a control processor (hereinafter referred to as a processor) that controls each mechanical section by executing a program; 52 is a memory; , a flag area 52a for storing programs, parameters, data, etc. necessary for processing by the processor 51, and for instructing paper seam counting.

and a position count area 52b.

53 is an input boat, each mechanical part (post-processing device APP
54 is an output boat for outputting commands, etc. from the processor 51; 55 is a drive control unit; Motor Ml, motor M4 . 56 is an interrupt control unit that controls the control unit of the post-processing device APP. 57 is a path that issues an interrupt signal INF to the processor 51, memory 52, and input port 53.
．． It is connected to the output port 54 to exchange data, addresses, etc.

58 is the main control unit, which exchanges commands and data with the host computer HO8T, and sends the BOT (
The mechanical control unit receives commands such as (print start), EOT (print stop) and print data for each page and controls the image forming unit 13 (not shown) to form an image on the photosensitive drum 10 corresponding to the print data. 50 processors 5
59 is a motor control unit that controls the drive (speed) of the motor M1 according to the signal from the drive control unit 55; This is a post-processing control unit that controls the motor M2. of the intermediate slitter device MSU according to instructions from the drive control unit 55. Motor M3 of the scattered device PCM. The burst drive unit 34a9 section drives and controls the mechanism 42, monitors the cycle of the signal from the sensor 35, detects a jam, and notifies the input port 53 of the mechanical control unit 50.

26 is the aforementioned seam detector (seam sensor).

Detect the paper through the detection hole DH (Fig. 8).

It notifies the input boat 53 of a seam detection signal.

28 is a motor control unit that controls the drive (speed) of the motor M4 according to a signal from the drive control unit 55;
is a part of the buzzer, and has a buzzer that emits an alarm sound and a buzzer cut-off switch.

Therefore, the memory 52 has a flag area 52a for instructing the seam count and a position count area 52b, which are used for tracking the position of the seam.

The sensor 35 detects the cut paper CP, and the post-processing control unit 36 uses the paper detection signal to detect a paper jam from the cycle.
It is configured to notify the mechanical control unit 50.

(C) Description of operation of one embodiment FIG. 5 is a jam processing flow diagram according to an embodiment of the present invention.

FIG. 6 is a print processing flow diagram of an embodiment of the present invention. First, a printing operation is performed under the control of the main control section 58, and along with this, the paper supply device PFU is controlled under the control of the mechanical control section 50. Motor M4. Motor Ml of printing device LBP
, motor M2 of the post-processing device APP. M3 is driven, and the continuous paper PP is synchronously fed from the paper supply device PFU to the post-processing device APP via the printing device LBP. The continuous paper PP is cut into pages at perforation positions, the sensor 35 detects the cut paper CP, and issues a paper detection signal, and the post-processing control unit 3
The following description will be made assuming that the cycle is monitored in step 6 to detect a jam.

The main control unit 58 of the processor 51 is configured to perform 1!2 inch printing (
The processor 51 executes the paper jam processing shown in FIG.
Refer to the contents and check whether counting is required.

(2) If counting is not necessary, the processor 51 checks whether the input boat 53 and the seam sensor 26 detect a seam and generate a seam detection signal.

If no seam detection signal is generated, proceed to step ■. If a seam detection signal is generated, a count is required.
The processor 51 turns on the count required flag in the flag area 52a of the memory 52 and proceeds to step (2).

■ If it is determined that counting is required in step ■.

That is, in step (2), the seam is detected by the seam sensor 26,
After the flag is turned on, the processor 51 uses the memory 5
"1" is added to the contents of the position count area 52b of No.2.

Then, the processor 51 compares the contents of the position count area 52b with the reference position (l+l).

As described above, the reference position <l+&) corresponds to the end of the blank page reaching the jam detection point (the position of the sensor 35).

Therefore, the contents of the 9-position count area 52b are (l+jh
) If the above is the case, all blank pages including the seam have passed through the jam detection point, so there is no need to track the seam position for jam detection. Clear the flag and turn off the count required flag in the flag area 52a, and proceed to step (2).

On the other hand, the contents of the 2-position count area 52b are (7!+mu)
If below, 1. Continue tracking the seam position and proceed to step ■.

(2) Next, the processor 51 checks whether a jam detection signal has arrived from the post-processing control section 36 from the input port 53, and if it has not arrived, the process ends.

(2) Conversely, when a jam detection signal has arrived, the processor 51 compares the contents of the position count area 52H of the memory 52 with the reference values (1!-1*) and (l+J!z).

The contents of the position count area 52a are CI-It).

If it is between (X+ZX), it means that a blank page including the seam is located at the jam detection point, and the jam is determined to be near the seam, and the processor 51 sets the seam as an error status to notify the main control unit 58. Set the jam and finish.

■ On the other hand, the contents of the 2-position count area 52H.

<1-1 Hiroshi) and (l+12), since the blank page including the seam is not located at the jam detection point, the processor 51 determines that the jam is outside the vicinity of the seam, and the processor 51 activates the main control unit 58. Set the jam outside the seam as the error status and end the process in order to notify the user.
sounds to notify the operator.

In this way, the post-processing control unit 36 detects a jam from the paper detection signal of the sensor 35, and notifies the processor 51 of this, and the processor 51 checks the contents of the position count area 52b for seam tracking.

Determine whether the jam is near or outside the seam.

On the other hand, the main control unit 58 monitors this error status,
The printing process shown in FIG. 6 is performed.

(2) When the main control unit 58 receives the start of printing from the upper HO8T, it starts printing and performs the printing operation for one page.

Next, it is checked whether an error status has been notified from the processor 51 of the mechanical control section 50.

■ If the occurrence of a jam is not notified from the processor 51, check whether a print stop command has been issued from the upper HO8T2. If not, print data for the secondary page must have been issued, so the print data for the primary page is The printing operation is performed, and the process returns to the error status notification determination in step (2).

On the other hand, if the print stop command has been issued.

The printing operation is stopped, and the motors M1 to M1 are controlled via the mechanical control unit 50.
M4 is stopped and paper feeding is also stopped to complete the process.

On the other hand, if the occurrence of a jam is notified from the processor 51 as an error status, the printing operation is immediately stopped and the motors M1 to M4 are stopped via the mechanical control unit 50.
Stop paper feeding. Then, check the contents of the error status to see if there is a jam near the seam.

If the jam is near the seam, the printed page is not caught in the jam and can be used, so the higher level HO8T is notified that re-output is not required.

finish.

On the other hand, if it is not a jam near the seam but a jam near the outside of the seam,
The printed page is stuck in a jam, so the top HO
Request re-output of print data to 8T and end.

Then, the operator detects the jam by the sound of the buzzer 43 and removes the jammed paper.

Release the jam state and use the error reset key (not shown)
When pressed, the print process shown in FIG. 6 and the paper jam process shown in FIG. 5 are restarted.

Note that the re-output request to the upper HO8T is a request to re-send the print data after the jammed page.

(d) Description of other embodiments In the above embodiment, the sensor 3 after cutting of the post-processing device APP
Although the jam is detected by sensor 5, the jam may be detected by a sensor at another location.

For example, buffer unit BFU, conveyor stacker device C8U
A hardware counter may be used instead of the seam tracking counter based on the combination of the processor 51 and the memory 52.

Also, although 6 blank pages are taken as the seam area, at least 2 pages can be selected as needed, and 12 can be changed accordingly.The configuration of the post-processing device and the printing device can also be the same as in the embodiment. Not limited.

Furthermore, the location of the seam sensor 26 is not limited to the paper supply device PFU, but may be provided within the printing device LBP.

Although the present invention has been described above with reference to embodiments, the present invention can be modified in various ways according to the gist of the present invention.

These are not excluded from the present invention.

〔Effect of the invention〕

As explained above, according to the present invention, when a jam occurs,
Since it is determined whether the paper jam is at a seam or not and a retransmission request to the higher level is suppressed, it is possible to notify the higher level that retransmission is not necessary when a paper jam occurs near the seam.

Therefore, there is an effect that there is no need to perform unnecessary reprinting.

Moreover, this can be realized by a simple method of seam tracking, and the performance of the print processing system can be easily improved.

[Brief explanation of drawings]

FIG. 1 is a diagram explaining the principle of the present invention. FIG. 2 is an overall configuration diagram of an embodiment of the present invention. FIG. 3 is an internal configuration diagram of an embodiment of the present invention. FIG. 4 is a configuration diagram of an embodiment of the present invention. FIG. 5 is a jam processing flow diagram according to an embodiment of the present invention. FIG. 6 is a print processing flow diagram of an embodiment of the present invention. FIG. 7 is an explanatory diagram of the print processing system. FIG. 8 is an explanatory diagram of the prior art. In the figure, LBP: printing device. APP...Post-processing device. PP...Continuous paper. 26... Seam sensor. 50... Mechanical control unit (seam tracking means). 35...Sensor (jam detection means).

Claims (1)

[Scope of Claims] A printing device that is supplied with continuous paper joined at seams and that prints on the continuous paper according to print data given from a higher level; and a continuous paper that has been subjected to printing processing and that is sent from the printing device. In a print processing system that includes a post-processing device that cuts and stores paper, a seam detection means detects a seam of the supplied continuous paper, and a position of the seam of the paper is determined from the seam detection of the seam detection means. a seam tracking means for tracking, and a detection means for detecting a paper jam in a post-processing device, and when a paper jam is detected by the detection means, the seam tracking means detects a paper seam portion. 1. A paper jam handling method for a print processing system, characterized in that when it is determined that the paper jam is a paper jam including a paper jam, the higher rank is notified that the print data does not need to be retransmitted.