JPS582858A - Transfer paper sorting method of copying machine - Google Patents

Abstract

PURPOSE:To distinguish and store transferred paper obtained through successive copying operation, by sending transferred paper, irrelevent to the copying operation, to a storage part after the successive copying operation without performing the copying operation. CONSTITUTION:When a copy start signal SI is inputted to the input port S1 of a microcomputer 100, the output ports P40(0) and P50(0)-P50(3) of an I/O expander 400, and output ports 0(4)-0(7) of the microcomputer 100 are set to start preliminary rotation and then a copying sequence is carried out. A stop signal for the finishing of copying of a desired number of sheets stops the copying operation; after the generation of the stop signal, the output P40(0) of the I/O expander 400 is set at prescribed timing and white copying paper is conveyed and ejected to an ejection part. Then, after rotation is performed to finish the copying sequence.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a copy paper sorting method in a copying machine, and more particularly to a copy paper sorting method for sorting and storing copy sheets copied by successive copying operations in a storage section of a copying machine.

Conventional copying machines and the like operate in a mode in which a plurality of copies of various originals are made, or a set of sheet originals is made.

In large-scale copying machines, the copy sheets copied in this way are stored in a storage section or a tray, and the position of the tray is changed after each copying operation, that is, each time a series of copying operations is completed, so that the copy paper is The resulting copies were stored separately.

However, this conventional method requires a drive source to move the tray! = Not only did it require enough space to move it, but the control needed to do so was also complicated, which hindered efforts to reduce the cost and size of copying machines.

It is an object of the present invention to provide a copy paper sorting method in a copy machine that enables a compact, inexpensive copy machine that can be stored.

The present invention is characterized in that after a series of copying operations is completed, transfer paper unrelated to the copying operation is sent to the storage section for identification at the time of classification without being subjected to the copying operation.

Next, embodiments of the present invention will be described in detail with reference to the accompanying drawings. FIG. 1 shows an example of a copying machine in which the present invention is used. This copying machine is a powder development transfer type electrophotographic copying machine. Reference numeral 1 designates a transparent document tray, on which a document to be copied is placed with its leading edge aligned with the reference position (2) of the document tray, and is held down with a document cover 2. Below the document tray 1 is a document illumination lamp 3. , movable mirrors 4 and 5, a fixed in-mirror lens 6 and mirror 7, and a photosensitive drum 8 are arranged at the positions shown by the solid lines. A F'50 is arranged for the purpose.

When a copy button (not shown) is pressed, the photosensitive drum 8 starts to rotate clockwise in the figure, and is charged and irradiated with light by each charger and each lamp, which will be described later. Lighting lamp 3, movable mirror 4
, 5 moves to the position shown by the broken line in the figure (the solid line part is B
It has a sensor of B at I (p (both 1 and 2), and the dashed line (-
The position shown is OHp and has the sensor A). When the photosensitive drum 8 completes a predetermined rotation, a signal to start exposure is issued, and the document illumination lamp 3 and the first mirror 4 move rightward from the position shown by the broken line at the same speed as the photosensitive drum 8. Then, the second mirror 5 also starts moving rightward from the position shown by the broken line at half the speed.

At this time, the document illumination lamp scans from OHp to B) II), but at this time (C1 2 REG
Pass through the sensor. The registration roller (2REG) rotates as it passes this sensor and synchronizes with the transfer paper.

The image of the original OB illuminated from below by the original illumination lamp 3 (2) is formed on the photosensitive drum 8 at the exposure section 9 by an optical system consisting of movable mirrors 4, 5, an in-mirror lens 6, a mirror 7, etc. When the exposure is completed in response to a signal corresponding to the size, the document illumination lamp 3 and movable mirrors 4 and 5 stop moving to the right in the figure, and immediately return to the binary direction (that is, to the left in the figure). The above operation is repeated according to the number of copies specified in advance by a button (not shown).When the exposure for the specified number of sheets is completed, the document illumination lamp 3 and movable mirrors 4, 5 return to the predetermined position C shown by the solid line in the figure. The speed of movement to the left in the figure is faster than the speed of movement to the right in the figure (this increases the copying efficiency).

The photosensitive drum 8 is coated with two transparent insulating layers on the photosensitive layer, and rotates clockwise in the figure as described above. A due to the pre-static eliminator 10 supplied with high voltage current.
At the same time as the charge is removed, the primary charger 12 is exposed to light from the lamp 11ζ2 to erase the charges on the surface of the insulating layer and inside the photosensitive layer, and then is supplied with a (+) high voltage current from a high voltage power source (not shown). (The entire surface is charged to Fl- from -). Subsequently, when reaching the exposure section e (:), the image from the illumination section 13 is exposed to slit light at the same time C2, not shown A
A static eliminator 14 that is supplied with high voltage current from a high voltage power supply.
The AC charge removal forms an electrostatic latent image on the document.

Then, the developing roller 18C is composed of a container 17 containing the entire developer, a developing roller 18, and a dog blade 19, and the developing roller 18C is magnetically operated. The electrostatic latent image on 8 is visualized. Next, the transfer paper fed from the paper feed section is brought into close contact with the photosensitive drum 8, and the image on the photosensitive drum B is sheet-transferred onto the transfer paper by being charged by the transfer charger 20 with a (+) high-voltage current from the high-voltage power supply. be done. The transfer paper that has been transferred is
The separation static eliminator 21 (Y1), which is supplied with AC high voltage current from the high voltage power source 1, is neutralized and its attraction force with the photosensitive drum B is weakened.

Next, the transfer paper is sucked by the roller 23 (= therefore, separated from the photosensitive drum 8 in the 22nd section, and transferred to the belt 24 and the guide 2).
5 (Guided to the fixing section 26 from the second. Exposure.

The ram 8 is pressed against the edge portion 2 of the plate cleaner 27.
At step 7', the remaining developer is wiped off and the next cycle is repeated. After the photosensitive drum 8 repeats the cycle for the number of sheets specified in advance by a button (not shown), it continues to rotate, and the above-mentioned AC static eliminator 14 (2) removes static electricity and exposes the entire surface using the lamp 15 (2) removes the inside of the photosensitive layer. The charge is removed and the transfer paper rotates a predetermined amount in preparation for the next time and then stops.On the other hand, the transfer paper is stored in the cassette 28 or paper feed deck 2B! Various types of transfer paper are prepared according to the size of the transfer paper, and can be easily replaced as necessary.The paper feed deck 29 is also configured so that transfer paper of several sizes can be stored with simple operation as necessary. The transfer paper stored in the cassette 28 or the paper feed deck 29 (2) is brought into contact with the paper feed rollers 30, 31 (2) with a predetermined pressure, regardless of the amount.The photosensitive drum 8 When the paper feed roller 3 reaches a predetermined position, press the button C2 (not shown) to move the paper feed roller 3 selected in advance.
0 or 31 starts rotation and sends out the transfer paper in the figure. Subsequent paper feeding is performed using roller pair 32°32' or 3.
3.33' and subsequent paper feeding means (2).The transfer paper is transported by roller pairs 36.36', 37.31' (registration rollers (2REG)), guides 38.38' or 39.39' and 40. 40', 41°41' (2) After being guided to the photosensitive drum 8 and synchronized with the image on the photosensitive drum 8, it comes into close contact with the photosensitive drum 8, and as described above, the image is transferred by being charged by the transfer charger 20. As described above, the transfer paper after the transfer is charged by the separation static eliminator 21 (2), separated from the photosensitive drum 8 at the position 22, and transferred to the belt 24 and guide 2 driven by rollers.
5 to the fixing section 26. In the fixing section 26, the transfer paper having an unfixed image on its surface is fixed by being subjected to a predetermined pressure when passing between rollers 42 and 43 that are pressed against each other with a predetermined pressure and rotate at the same peripheral speed. Fixing part 2
Finally, the transfer paper with the number 6 is removed by a static eliminator 44C; the charge remaining on the surface is removed, and then guided by guides 45 and 46 to discharge rollers 47 and 48, and discharged onto a tray 49.

. FIG. 2 is a block diagram showing the control section of the copying apparatus. In this example, a 4-bit microcontroller 100 M888400 (manufactured by Tsujitsu) is used, and since the number of I/O ports is small, three I10 expanders, p200, 300
I am using ゜400. The control section shown in the block diagram is just one embodiment of the present invention.

When a copy start signal is input from another control section (not shown) to the input port S of the microcomputer 100, the I10
Expander 400 output boat P40(0), P2O
)~(3), Output boat of microcomputer 100 (4)~
(2) etc. are set, the main motor, primary charger, secondary charger, etc. are driven, and pre-rotation for stabilizing the photoreceptor is started. After that, at a predetermined timing, the output port R[F]) of the microcomputer 100 ~ 0υ, 1/6
Ta400 (7) Out'jJ Ho) P40 (1),
(2) etc. are set, and the above-described copying sequence is executed. The copying operation is then completed when a stop signal is generated when the desired number of copies have been completed. Further, the output P40(0) of the I10 expander 400 is set at a predetermined timing after the stop signal is generated, and blank copy paper is conveyed and ejected to the ejecting section as described later. Then, post-rotation is performed and the copying sequence ends. The above sequence is controlled by the drum clock generated by the interrupt terminal η of the microcomputer 100 (7).

The other input/output boats include a check boat equipped with safety devices such as jammers and a C2 for service personnel, and detailed explanation thereof will be omitted here.

Next, the control flow of the present invention will be explained with reference to FIGS. 3 and 4. Insert the plug at tl in Figure 3 and at t2 (
Step 100 in FIG. 4), when the power is turned on, the copying operation is accepted after waiting for the fusing unit of the copying machine (see FIG. 3 (see fl) to heat up. t3 in FIG. 2 and step 101 in FIG. 4). When the C Nikopy on signal is input as shown in the figure, in step 102, the pre-rotation timer,
Four timers are set: paper feed timing, optical system drive timer, and 10-gen lamp timer. Next, step 1 of Fig. 3(a), fc) to (g) and Fig. 4
As shown in 03, the main motor, blank exposure, -
Next exposure, full-surface exposure, and pre-transfer exposure are each turned on, and high voltage is set to each charger. The above-mentioned timers are reset in that order in steps 104, 106 and 108, and the paper feed rollers 30 and 3 are reset accordingly.
1. At the same time as the halogen lamp 3 is turned on (steps 105, 107), the optical system 4,
5 is driven, and the developing bias voltage is further applied to the developing roller 1.
8.

Subsequently, in step 110, the final timer in the initial settings is reset and when it is determined that the pre-rotation has ended, the image exposure sequence begins. The optical system driven by step 108c2 is an OHp sensor (main) on the optical system scanning.
position sensor) is turned on (step 11).
1), the blank exposure lamp 15 turns off (-), and a timer for the next paper feeding timing is set (112).

When this timer is turned off (113), step 1
In step 14, it is determined whether or not the copy is stopped, and if it is not stopped, the paper feed roller is turned on in step 115, and in step 116, it is determined in half whether the second REG roller is turned on or not. be done. If it is on, the second REG roller on timer is set (117) and the process returns to step 111.

If it is determined in step 114 that copying is to be stopped, the present invention (2) Accordingly, in step 118 (2), a check is made to determine whether or not to send out a transfer sheet unrelated to the copying operation (i.e., whether or not to output a blank sheet). Only in the blank paper output mode, step 119 (2) sets the paper feed roller.Then, the second REG roller is set through steps 120 and 121, and the BHp (reversal home position) sensor is set at step 122. It is determined whether or not the BHP sensor has operated. When the BHP sensor ■ is reached, the optical systems 4 and 5 are turned on via steps 123...124.
A sequence is performed in which the blank exposure lamp is turned on, the halogen exposure lamp 3 is turned off, and the high voltage to the chargers 9, 10, and 12 is cut off. Next, in step 125, a post-rotation timer is set, the developing bias and the developing sleeve are turned on, the bias voltage is cut off, and post-rotation begins as shown in FIG. If it is determined that the
Turn off each G roller (2) to finish copying.

In the above-mentioned control, after a series of copying operations are completed, a mode in which transfer paper unrelated to the copying operation is sent out can be realized by, for example, providing such a mode switch on the operation panel of the copying machine. It is also possible to perform C2 automatically in conjunction with copy-on every time the data is replaced.

Furthermore, the blank transfer paper for differentiation sent out in the above mode is fed from the cassette containing the related transfer paper, as well as from a separate cassette unrelated to the previous copying operation. It is also possible to use paper other than white paper (if you use colored paper,
A clearer distinction becomes possible.

As explained above, according to the present invention, after a series of double-track re-operations are completed, copy sheets unrelated to the copying operation are sent to the storage section without performing the copying operation, which requires a large space and complicated control. Copies 1' obtained by successive copying operations can be clearly distinguished and stored.

[Brief explanation of the drawing]

FIG. 1 is a layout diagram showing the configuration of a copying machine used in the present invention, FIG. 2 is a block diagram showing a control section of the copying machine, and FIGS. 3(a) to (g) are controls according to the present invention. FIG. 4 is a timing chart showing the flow of control according to the present invention (2).

Claims (1)

[Scope of Claims] 1) Copy paper sorting method in a copying machine in which copy sheets copied by successive copying operations are classified and stored in a copying machine storage section+2, after the completion of a series of copying operations, the 1. A copy paper sorting method in a copying machine, characterized in that the paper that can be identified as a copy paper is sent to the storage section without performing a copying operation and is identified at the time of classification and storage. 2) A copy paper sorting method in a copying machine according to claim 1, characterized in that the transfer paper is fed from a cassette containing transfer paper fed during a copying operation. 3) The transfer paper unrelated to the copying operation is fed from a cassette different from the cassette containing the transfer paper fed in the copying operation. Copy paper classification method for copying machines.