JPH0732682A - Paper processing device - Google Patents

Abstract

PURPOSE:To provide a paper-processing device, with which the re-setting of continuous paper is automated as to the paper processing device, in which the feeding out to the next perforation can be carried out by feeding out only the remaining quality of the paginal feed of continuous paper when the cutting off of power source during processing is released. CONSTITUTION:The device concerned feeds the continuous paper 2, at the paginal end of which perforation is provided, from a paper feeding part 1 by a paper feeding means 3 so as to execute the predetermined processing on the continuous paper 2 with a processing means 5. The device concerned is equipped with a calculating means 10 for calculating the feed of the continuous paper 2 in synchronization with perforation, a nonvolatile storing means 9, which stores the feed of the continuous paper calculated by the calculating means 10 at the stoppage of processing due to abnormalities including the cutting off of power source during processing, and a calculating means 11 for calculating the remaining quantity of paginal feed on the basis of the stored paginal length and feed of the continuous paper 2 so as to have a constitution, which feeds out the continuous paper 2 only by the calculated remaining quantity of feed.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a paper processing apparatus such as a laser printer which uses continuous paper, and in particular, when the power is cut off during printing, only the remaining amount of the continuous page is fed. The present invention relates to a sheet processing apparatus capable of sending out to the next perforation.

With the recent development of office automation, electrophotographic printing apparatuses such as laser printers are widely used in output terminals of computers, facsimile machines, copying machines and the like.

In these apparatuses, continuous printing paper (hereinafter referred to as paper) having perforations at page breaks is guided into a gap between a photosensitive drum and a transfer device to transfer a toner image on the photosensitive drum onto the printing paper. If the device stops due to power failure or interlock detection and the paper stops halfway, after the stop is released, the operator needs to re-adjust the perforations again, which is troublesome and the work is automatic. A method that can be set to is desired.

[0004]

2. Description of the Related Art FIG. 6 illustrates an internal side view of a laser printer to which the present invention is applied. In the figure, 1a is a paper feed unit accommodating and accommodating sheets 2a folded at perforations, 3a
Is a tractor, 4 is a transport path, 5a is a printer unit, and 6 is a stacker.

The printer section 5a includes an optical unit 50, a photosensitive drum 51 as an image forming body, a cleaner 52, a charger 53, and a developing device.
54, a transfer device 55, a static eliminator 56, and a fixing device 57. With such a configuration, first, when the power of the apparatus is turned on and the paper 2a is loaded in the paper feeding unit 1a, the size sensor
The size of the sheet 2a is detected by S1 and stored in a control unit (not shown). The size sensor S1 is composed of a plurality of sensors shielded according to the paper size.

Then, the perforations of the sheet 2a are aligned with the designated position a, the feed holes at both ends of the sheet 2a are set on the sprocket 30 provided on the belt B of the tractor 3a, and the tractor 3a is depressed by depressing an autoload button (not shown). Drive the paper
2a is fed in the direction of arrow A, the sensor S2 detects the leading edge of the paper 2a, feeds it by a predetermined amount, sets the perforations at the print standby position b, and stops, and enters the print standby state.

Finally, the fixing section 57 is heated to a predetermined temperature and becomes ready for printing. The photosensitive drum 51 has already been neutralized by the static eliminator 56, the residual toner is cleaned by the cleaner 52, and is charged again by the charger 53.

When the print start button is pressed, the optical data radiated from the optical unit 50 composed of a laser light source or the like scans the photosensitive drum 51, and the electrostatic image formed on the photosensitive drum 51 is a toner image by the developing device 54. Paper developed and transferred to
After transferring to 2a with transfer device 55, fix it with fixing device 57, and
Are sequentially sent to the stacker 6 and accumulated.

Here, there is a power failure during printing,
Or, if the operator shuts down the power by detecting an interlock such as opening the door of the device, the device stops (hereinafter referred to as abnormal stop) and the feeding of the paper 2a is stopped in the middle, so the operator does not stop abnormally. After releasing, the perforation is aligned with the tractor 3a again and the autoload button is pressed in order to reset the paper 2a. When the paper 2a is reloaded,
By pressing the print start button, the corresponding page is reprinted from the beginning. The print data is stored in the control unit in page units and is not erased until printing of one page is completed.

[0010]

According to the above-mentioned conventional method, the apparatus abnormally stops due to a power failure during printing or an interlock is detected, and after the abnormal stop is released, the operator adjusts the perforation to a predetermined position again. There is a problem in that it is necessary to perform the operation and redo the autoload.

The present invention provides a sheet processing apparatus capable of automatically re-perforating sheets without operator intervention when an abnormal stoppage of the apparatus due to power interruption during printing is canceled. The purpose is to

[0012]

FIG. 1 is a block diagram showing the principle of the present invention. In the figure, 3 is a paper feeding means, 5 is a processing means, 2 is continuous paper with perforations at page breaks,
Reference numeral 10 is a counting means for counting the feeding amount of the continuous paper 2 by the paper feeding means 3 in synchronization with the perforation, and 9 is for storing the length of one page of the continuous paper 2 and processing due to an abnormality including power-off during processing. A non-volatile storage means for storing the feed amount of the continuous paper 2 counted by the counting means 10 at the time of stop, and a length of one page of the continuous paper 2 stored in the storage means 9 at the time of releasing the processing stop due to an abnormality. And a feed amount of the continuous paper 2 based on the feed amount of the continuous paper 2.

Therefore, the continuous paper 2 provided with perforations at the page breaks is fed from the paper feed unit 1 by the paper feeding means 3 and the processing means 5 processes the continuous paper 2 and the processing is stopped due to an abnormality. At the time of canceling, the paper feed means 3 feeds the continuous paper 2 by the feed remaining amount of the corresponding page calculated by the calculation means 11.

[0014]

The feeding amount of the continuous paper 2 is counted by the counting means 10 in synchronism with the perforation during printing, and when the printing is stopped due to an abnormality including power-off, the counted feeding amount is previously set to 1 of the continuous paper 2.
The page remaining length is stored in the storage unit 9 for storing the page length, and at the time of canceling the process stop due to an abnormality, based on the page length and the feed amount of one page of the continuous paper 2 stored in the storage unit 9, the remaining feed amount of the corresponding page. Is calculated by the calculating means 11 and the continuous paper 2 is sent out according to the remaining feed amount, so that the continuous paper 2 is automatically generated.
Can be reset, and the troublesome work of resetting by the operator can be omitted.

[0015]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment in which the present invention is applied to the paper feeding of the laser printer described in the conventional example will be described with reference to FIGS. 2 and 3 are configuration diagrams showing an embodiment of the present invention, and FIG.
5 and 6 are flowcharts of the embodiment. The same reference numerals denote the same objects throughout the drawings.

The paper 2a, the tractor 3a, and the printer unit 5a shown in FIG. 2 correspond to the continuous paper 2, the paper feed means 3, and the processing means 5 shown in FIG. 1, respectively, and the RAM 9a, the feed amount counter 10a, and the feed counter 10a shown in FIG. The calculation unit 11a corresponds to the storage unit 9, the counting unit 10, and the calculation unit 11 in FIG. 1, respectively.

As shown in the side view of the main part of the paper feeding of the laser printer in FIG. 2, the timing belt TB is wound around the pulley P1 of the drive shaft of the stepping motor (hereinafter referred to as the motor) M1 and the pulley P2 of the driven shaft of the tractor 3a. The motor M1 is provided with a sensor S3 that detects the amount of paper feed per 1/2 inch due to the rotation of the pulley P1.

In the paper feed control block diagram of FIG. 3, 7 is an MPU, 8 is a ROM, 9a is a RAM, 10a is a feed amount counter, 11a is a calculation unit, 12 is an operation panel, 13 is a sensor amplifier, and 14 is a drive. A circuit, 80 is a control program, 81 is a reset program, 90 is a page length table for each size, 91 is a page length file, and 92 is a remaining feed amount file.

The MPU 7 is a control program 80 in the ROM 8.
And each part is controlled according to the reset program 81. R
The OM8 controls the page length setting by detecting the paper size, the transfer of the paper 2a at the time of automatic loading and printing, the count of the feed amount of the paper 2a, and the power interruption due to power failure or the abnormal stop due to the interlock. Program 80,
And a resetting program 81 for automatically resetting the paper 2a by pressing the resetting instruction button 122 of the operation panel 12 which will be described later at the time of return to calculate the page feed remaining amount by the calculating unit 11a.
To store.

The calculation unit 11a is half of the feed amount counter 10a.
The feed amount L2 (= 1/2) from the count N of the detection signal for each inch
Inch × N) is calculated and the page length file of RAM9a is calculated.
91 pages length L1 minus feed amount L2, remaining feed amount L3
Calculate (= L1-L2).

The RAM 9a is a page length table for each size.
90, a page length file 91, a feed amount counter 10a, and a feed remaining amount file 92 are provided, and battery support is provided when the power is cut off.

The page length by size table 90 stores page lengths of all sizes of the paper 2a used by the apparatus. The page length file 91 is the paper 2a of the corresponding size read from the size-dependent page length table 90 by the detection by the size sensor S1 when the paper 2a is loaded in the paper feeding unit 1a.
Stores the page length of.

The feed amount counter 10a counts the detection signal from the sensor S3 which detects the feed amount every 1/2 inch in synchronization with the perforations of the sheet 2a. Therefore, when the perforation is detected, counting starts, and when the page length of the page length file 91 is counted, the count up to that point is cleared,
Counting starts again from the next perforation.

The remaining feed amount file 92 stores the remaining feed amount L3 calculated by the calculation unit 11a. The operation panel 12 includes an auto load button 120, a print start button 121, and a reset instruction button 122.
The display unit 123 and operation buttons for inputting print conditions such as the number of prints and print density are provided. The display unit 123 displays the printing conditions input by operation and the device status (guidance such as printable or paper jam).

Since it has such a structure and function, its operation will be described with reference to the flow charts of FIGS. First, when the apparatus power is turned on and the paper 2a is loaded into the paper feed unit 1a, the size of the paper 2a is detected by the size sensor S1 and the page of the paper 2a of the corresponding size is detected from the size-dependent page length table 90 by the detection signal. The length is read and stored in the page length file 91.

The perforation of the paper 2a is aligned with the designated position a, the feed hole is set on the tractor 3a, and the auto load button 12 is pressed.
When 0 is pressed, the tractor 3a is driven and the paper 2a is moved to the arrow A
When the sensor S2 detects the leading edge of the sheet 2a, the sensor S2 sends the sheet 2a by a predetermined amount to set the perforations at the printing position, completes the autoloading, and enters the print standby state.

Then, when the print start button 121 is pressed, the feeding of the sheet 2a is started, the sensor S3 detects the feeding amount every 1/2 inch, and the feeding amount counter 10a starts counting the detection signal. . In addition, printing is started during this time.

When the feed amount counter 10a reaches the page length stored in the page length file 91, the count is cleared and the counting of the next page is started. If there is an abnormal stop due to a power failure or an interlock during printing and the abnormal stop is released, “Recovery” is displayed on the display unit 123.

Then, when the operator presses the reset button 122, the tractor 3a drives in the reverse direction to retract the sheet 2a, and the position where the set S3 first detects (that is, 1/2 inch immediately before the abnormal stop). Stop at each feed amount detected position).

In a device using a stepping motor, the driving phase and the motor phase do not match, so it is necessary to realign the perforations. Therefore, since the sensor S3 and the perforation are in phase, it is possible to use the sensor S3 to align the paper positions at 1/2 inch intervals.

Next, in the arithmetic unit 11a, the feed amount counter 10a
The remaining feed amount L3 is calculated from the count N and the page length L1 set in the page length file 91. That is, the feed remaining amount L3 = page length L1−feed amount L2 = L1−1 / 2 inch × N is obtained (in units of inches), and the feed remaining amount L3 is stored in the feed remaining amount file 92.

Remaining amount of feed stored in the remaining amount of feed file 92
Only L3 drives the tractor 3a in the set feed direction to transfer the paper 2a. Then, "reset complete" is displayed on the display unit 123, and the operator confirms that the perforation is aligned with the predetermined position if necessary.

When the operator depresses the print start button 121, the corresponding page that has abnormally stopped during printing is reprinted from the beginning, and the subsequent printing is continued. In this way, when the abnormal stop during printing is released, the paper 2a that has been printed and sent up to the middle of the page by simply pressing the reset button 122
Can be automatically reset to the perforation position of the page, so that the operator can save troublesome resetting operation.

[0034]

As described above, according to the present invention, in claim 1, the feed amount of continuous paper is counted in synchronization with the perforation, and the processing is stopped due to an abnormality including power-off during processing,
When the abnormal stop is restored, the remaining feed amount is calculated based on the feed amount and page length, and only the remaining feed amount is sent out, so that continuous paper processed halfway through the page is automatically Since it can be reset at the position of the perforations, it is possible to save the operator the troublesome operation of resetting.

According to the second aspect, when the driving is performed after the abnormal stop is recovered, in the device using the stepping motor, the driving phase and the motor phase do not match. Therefore, it is necessary to adjust the perforations. By detecting the unit length which is an integer fraction of the page length and counting the feed amount of continuous paper, the counting of the unit length which is a fraction of integer and the perforation phase are matched. It is possible to align the perforation positions of the continuous paper at intervals of a unit length of 1 / integer. There is an effect.

[Brief description of drawings]

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

FIG. 2 is a configuration diagram (1) showing an embodiment of the present invention.

FIG. 3 is a configuration diagram (part 2) showing an embodiment of the present invention.

FIG. 4 is a flowchart of the embodiment (part 1).

FIG. 5 is a flowchart of the embodiment (part 2).

FIG. 6 is an internal side view of a laser printer to which the present invention is applied.

[Explanation of symbols]

1, 1a is the paper feed section, 2 is continuous paper, 2a
Is paper, 3 is paper feeding means, 3a is a tractor,
5 is a processing unit, 5a is a printer unit, 9 is a storage unit, 9a is a RAM, 10 is a counting unit,
10a is a feed amount counter, 11 is a calculation means, 11a is a calculation unit, 91 is a page length file, and 92 is a remaining feed hunting file.

Claims (2)

[Claims] 1. A continuous paper (2) provided with perforations at page breaks from a paper feeding section (1) is sent out by a paper feeding means (3), and a predetermined means is provided on the continuous paper (2) by a processing means (5). Which is a device for performing the processing of (1) of the continuous paper (2) and a counting means (10) for counting the feed amount of the continuous paper (2) by the paper feeding means (3) in synchronism with the minced line. In addition to storing the length, the counting means (1
Non-volatile storage means (9) for storing the feed amount of the continuous paper (2) by (0) and one of the continuous paper (2) stored in the storage means (9) at the time of releasing the processing stop due to the abnormality. Page length and continuous form (2)
And a calculation means (11) for calculating the remaining feed amount of the relevant page based on the feeding amount of the corresponding page, and only the remaining feed amount of the relevant page calculated by the calculation means (11) is calculated by the paper feeding means (3). A sheet processing device for feeding the continuous sheet (2). 2. The counting means (10) is one of continuous paper (2).
2. The sheet processing apparatus according to claim 1, wherein a unit length which is an integral fraction of a page length is detected and counted.