JPH01226647A - Supplied paper quantity counting device - Google Patents

Abstract

PURPOSE:To grasp the replacement time for each transport roller correctly by counting the quantity of supplied paper for each paper feeding device and memorizing the value into a memory device and reading out the counted number for the supplied paper for each paper feeding device at each desired time and displaying said value on a display part. CONSTITUTION:A CPU 70 receives the signals of switches and sensors and judges the selection among an upper paper feeding cassette part, lower paper feeding cassette part, or a manual paper insertion part, and the quantity of supplied paper in each paper feeding part, in other words, the number of times of use of a transport roller is counted from the signal of a paper stop switch 10 interlocked with a resisting roller and memorized into a memory device 81. The data of the number of times of use for each transport roller which is memorized in the memory device 81 is read out at each desired time, and displayed by a display device 83 on an operation panel. Therefore, the replacement time for each transport roller of the paper feeding means having a plurality of paper feeding parts can be grasped easily and correctly.

Description

[Detailed description of the invention] [Purpose of the invention] (Industrial application field) The present invention relates to a feeding sheet number counting device.

(Prior Art) Currently, office equipment such as copying machines and printers are equipped with a plurality of paper feed units to facilitate the use of various different sizes of transfer paper. The paper feeding section is provided with a paper feeding device that uses several types of transport rollers and the like to transport the transfer paper. The paper feeding device takes out the transfer paper from the paper feeding section by the frictional force between the transfer paper and the conveying roller, and at this time, only one sheet of the transfer paper is separated and conveyed to the next process. Because the transfer paper and the conveyance roller rub against each other in this way, the surface characteristics of the conveyance roller deteriorate after tens of thousands of sheets are passed, and the conveyance ability decreases. For this reason, it was necessary to replace these rollers regularly.

However, in the case of copying machines, conventional sheet counting devices count and display the number of copies used for each developing unit and the total number of copies. Therefore, it has been impossible to determine the actual number of sheets fed by the conveyance rollers of each sheet feed @ position corresponding to each sheet feeding section, based only on the total number of copies.

This also applies to other office equipment. Therefore, the actual number of times each conveyance roller is used is unknown.
The timing of replacement was left up to the judgment of the service personnel, which was often inappropriate and inefficient.

(Problem to be Solved by the Invention) As mentioned above, the conventional sheet feeding sheet number counting device only counts the total number of sheets fed by each sheet feeding device. It was not possible to determine the actual number of sheets fed by the conveyor rollers of the device. Therefore, the replacement timing corresponding to the actual number of times each conveying roller was used was left to the user's estimation, and was not an appropriate replacement timing.

SUMMARY OF THE INVENTION In order to eliminate the above-mentioned drawbacks, it is an object of the present invention to provide a feeding sheet number counting device that can easily and accurately determine the number of sheets fed at the corner of a sheet feeding means and determine the appropriate time to replace the rollers. .

[Structure of the Invention] (Means for Solving One Problem) In order to achieve the above-mentioned problem, the present invention stores the number of sheets fed in a storage device for each sheet feeding device in a sheet feeding sheet number counting device. The feeding sheet count data for each paper feeding device can be read from the storage device at any time, and the read data is displayed on the display section.

(Function) By pressing the specified key on the operation panel, the Ill 1m device will
The data on the number of fed sheets for each paper feeding device stored therein is read out from a preset area in the recording device and displayed on the display unit. Based on this data, it is possible to accurately determine whether it is time to replace each conveyance roller of the paper feeding device. In this way, it is now possible to easily and accurately know when to replace the conveyance rollers, which has not been appropriate in the past.

(Example) An embodiment of the present invention will be described below with reference to the drawings.

FIG. 2 is a schematic cross-sectional view of a copying machine using a feeding sheet number counting device according to an embodiment of the present invention. A document table 14 is provided on the top surface of the copying machine main body 1 (hereinafter referred to as main body 1), and an operation panel 87 is provided in front of the document table 14. Also, on the right side of the main body 1, an unfeed paper cassette section 3 is provided.
and a non-feeding paper cassette section 4 are provided as paper feeding sections, and a top picture paper cassette 31 and a bottom picture paper cassette 41 are attached thereto. The cassette cover of this overglaze paper cassette 31 is
In order to manually feed the transfer paper P1 as appropriate, a manual paper feed section 2 is provided as a paper feed section, and this is connected to a manual paper feed tray 21.
That's what it means. A paper discharge tray 12 is attached to the left side of the main body 1. A photosensitive drum 16 is located approximately in the center of the main body 1.
is installed. Around the photosensitive drum 16, a charging device 17. Optical system 15. Developing device 218
．． Transfer charger9. Charger for peeling 19. A cleaning device 13, a static elimination lamp 21, and the like are arranged in sequence.

At the bottom of the main body 1, there are a transfer paper P2 automatically taken out from the overprint paper cassette 31 via the pickup roller 6, a transfer paper P3 automatically taken out from the underpainting paper cassette 41 via the pickup row 55, and a manual paper feed table. A transfer paper conveyance path 8 is formed that guides the transfer paper P1 manually fed from the photosensitive drum 16 and the transfer charger 9 to the paper discharge tray 12. A paper stop switch 10 is connected to this transfer paper transport path 8 from upstream.
, registration roller 11. A heat roller 20 and a paper discharge roller 22 are sequentially arranged. Here, each device from each paper feed section to the registration roller 11 is called a paper feed device, and details will be explained in detail.

The optical system 15 includes an exposure lamp 24. whose back part is surrounded by a reflector 23. It has a configuration including a mirror 25 to 30 degrees and a lens 31.

Here, the photosensitive drum 16 is driven by a drive mechanism (not shown) in the direction of the arrow a in the drawing in synchronization with the optical system 15. First, the photoreceptor drum 16 is charged with the charging band 1! ! 11
7, it is uniformly charged. Next, a projected image of the document uniformly irradiated with light by the exposure lamp 24 is projected by the optical system 9.
An image is formed on the photosensitive drum 16. This image is an electrostatic latent image. This formed electrostatic latent image is transferred to the developing device! 10 to form a toner image and send it to a transfer charger 911.

On the other hand, the transfer paper P1, P2, or P3 (hereinafter referred to as transfer paper P) supplied automatically or manually is
The paper stop switch 10 is turned on in synchronization with the photosensitive drum 16, and the registration roller 11 rotates accordingly. Then, the above-described toner image is transferred onto the transfer paper P by the transfer charger 9. The transfer paper P on which this toner image has been transferred is peeled off from the photosensitive drum 16 by a peeling charger 19, passes through a transfer paper conveyance path 8, and is guided to a heat roller 2o. Here, the transfer paper is discharged onto the paper discharge tray 12 by a paper discharge roller 22 after the transfer image is fused and fixed.

On the other hand, after the toner image is transferred onto the transfer paper P, the residual toner remaining on the photoreceptor drum 16 is cleaned by the cleaning device 13, and the residual image on the photoreceptor drum 16 is further erased by the static elimination lamp 21, and the next copy is made. Ready for action.

Inside the main body 1, an upper frame and a lower frame (not shown) are pivotally supported at one end via a support shaft (not shown), and the other ends of both frames are opened at a desired angle, for example, about 30 degrees. It is configured so that it can be done. A charger 17 for charging is provided around the photoreceptor drum 16 on the upper frame. Optical system 15, exposure lamp 24. Developing device N18. Each device, such as the crushing device 13 and the static elimination lamp 21, is attached by appropriate means. Furthermore, the upper frame
The document table 14, the pickup roller 6, feed roller 32, and separation roller 34 of the upper automatic paper feeder, and the feed roller 7 of the manual paper feeder are provided to constitute the upper unit 1A.

In the lower frame, there is a picture paper cassette 3. Lower paper feed cassette 4. Transfer charger9. Peeling charger 19° heat roller 20. Paper ejection roller 22. Each mechanism such as the paper ejection tray 12 is attached by appropriate means to constitute the lower unit 1B.

After the front cover of the main body 1 is rotated and removed, it is configured so that it can be opened and closed approximately along the transfer paper conveyance path 8 of the transfer paper P via a housing opening/closing device (not shown). If the casing can be opened and closed along the transfer paper transport path 8 in this way, the rollers interposed therein can be easily replaced.

FIG. 3 shows the operation panel 87, and the upper right cloth block in the figure includes an interrupt key 512 for setting an interrupt mode for interrupt copying, and a preheating key 5 for preheating the main body 1.
2 and a counter key 53 for displaying the number of sheets fed from each sheet feeding section. In the upper right center block of the figure, there is a lamp section 5 that displays the status of the main body 1 with a lamp.
5. A number display section 56 for displaying the setting of the number of copies is provided in the upper left block in the figure. In the lower right block of the figure, there is a copy key 5 for executing the copy operation.
A numeric keypad 54 is provided for setting 0 and the number of copies. A density setting section 57 for setting copy density is provided in the block on the left. Furthermore, in the block to the left of that, there is a color selection key 58 for selecting the color of the copy. Cassette selection key 59 for selecting a paper feed cassette. An enlargement/reduction key 60 for setting an enlargement mode and a reduction mode and an equal-size key 61 for setting an equal-size mode are provided. The leftmost block is provided with a liquid crystal display section 62 for displaying operating conditions and the like, and an information key 63 for calling up the normal mode on the liquid crystal display section 62.

Here, when a paper feed cassette is selected using the cassette selection key 59, a storage area in the storage device corresponding to the paper feed cassette is set at the same time, as will be explained later. When paper is fed from the manual paper feed unit 2, the storage fi area is not set by a key, but by turning on the manual feed switch when inserting the transfer paper P1.

Next, detailed information regarding the paper feeding means will be explained.

As shown in Figure 4, there are three paper feed sections on the right side of the paper feed means.
Manual paper feed section 2. An upper and upper cassette section 3 and a non-feed cassette section 4 are provided. Each of the paper feed units has the transfer paper P1 of an appropriate size for use. P
2 and P3 are stored. Furthermore, the unfed paper cassette 31 and the unfed paper cassette 41 are of a T-cartridge type that can be freely attached to and removed from the main body 1, making it efficient when changing the transfer paper size or replenishing the transfer paper P2 (or P3). It is. Transfer paper P1. Transfer paper transport paths that guide each of P2 and P3 to the registration rollers 11 are formed individually. The transfer paper conveyance path 81 (hereinafter referred to as the conveyance path 81) of the conveyance path of the transfer paper P1 extends from the manual feed row 57 to the feed roller 32 and the separation row 534. A manual feed switch 42 is provided along the conveyance path 81. The transfer 'M conveyance path 82 (hereinafter referred to as the conveyance path 82) of the conveyance path of the transfer paper P2 extends from the pickup row 56 to the registration roller 11. This conveyance path 8
2, a feed roller 32, a separation roller 34, and a paper stop switch 10 are disposed in this order from upstream. Transfer paper conveyance path 83 of the conveyance path of transfer paper P3
(hereinafter referred to as the conveyance path 83) is the pickup roller 5
to the registration roller 11. In the middle of this conveyance path 83, there are a feed roller 331 and a separation roller 3 from upstream.
5 and a paper stop switch 10 are arranged in this order. Further, the conveyance path 81 joins the conveyance path 82 from the feed roller 32 and the separation roller 34 .

In the conveyance path 82, the transfer paper 82 is taken out by the lowering and rotation of the pickup roller 6 by a drive mechanism (not shown), and is conveyed to the reservoir contact portion between the feed roller 32 and the separation roller 34. The feed roller 32 rotates in the b direction shown in the figure. The separation roller 34 is similarly driven to rotate in the direction b shown in the figure. Therefore, when there is no transfer paper P2 or when feeding one sheet, the feed roller 3
r! between the transfer paper P2 and the separation roller 34 or between the transfer paper P2 and the separation roller 34. Rubbing occurs. At this time, a spring joint provided around the support shaft (not shown) slips, and the separation roller 34 rotates in the direction C shown in the figure. In other words, in the case of one-sheet feeding, the transfer paper P2 is conveyed to the paper stop switch 10. When the transfer paper P2 is fed two sheets, the separation roller 34 and the feed roller 32 both rotate in the b direction because the distance between the transfer paper P2 is small. In other words, in the case of two-sheet feeding, the upper transfer paper P
2 is conveyed to the paper stop switch 10 by the feed roller 32, and the lower transfer sheet P2 is conveyed to the paper stop switch 10 by the feed roller 32.
4, the paper is returned to the main paper feed cassette 31. In this way, only one sheet of transfer paper P2 is transported. Transfer paper P
2, the registration roller 11 is turned on by turning on the vapor stop switch 10 after a predetermined time after the feed roller 32 is conveyed.
It is then aligned and transported to the transfer process.

The same applies to the transport mode of the transfer paper P3 in the transport path 83.

Further, when the transfer paper P1 is fed to the manual paper feed section 2, the manual feed switch 42 is turned on from off.
Detects that paper is being fed. The manual feed row 57 of the conveyance path 81 is lowered by a drive mechanism (not shown), rotates further, and conveys the transfer sheet P1 to the sliding contact portion between the feed roller 32 and the separation roller 34. From there, it becomes a conveyance path 82, and the conveyance operation of *P1 for transfer is as described above.

Here, when we look at each paper feed section and the various rollers disposed on each transfer paper conveyance path, we can see the following.

The number of sheets of transfer paper conveyed by the manual feed roller 7 is
is equal to the number of sheets fed. The number of transfer sheets conveyed by the pickup roller 6 is equal to the number of sheets fed in the overprint paper cassette section 3. The number of transfer sheets conveyed by the feed roller 32 and the separation roller 34 is equal to the total number of sheets fed by the manual paper feed section 2 and the overprint paper cassette section 3. pickup low 55
The number of sheets of transfer paper conveyed by the feed roller 33 and the separation roller 35 is equal to the number of sheets fed to the sketch paper cassette section 4. The number of transfer sheets conveyed by the registration roller 11 is equal to the total number of sheets fed by each sheet feeding section.

The various rollers listed here are rollers that convey the transfer paper P by using a material (for example, rubber, etc.) that has frictional force on its surface. Therefore, it is necessary to replace the rollers according to the lifespan of the friction material. The lifespan of this friction material is the usage limit of wear, and this can be inferred from the transfer paper conveyance mechanism.
F of the number of sheets fed by each paper feed section! A grip is required.

In Figure 4, the top picture paper cassette part 3 and the bottom picture paper cassette part 4
An upper size switch 36 and a lower size switch 37 are provided at the back of each paper feed cassette mounting opening.

Paper empty switches 38 and 39 are provided at the inner bottom of each paper feed cassette mounting opening, respectively. The upper size switch 36 and the lower size switch 37 are both cassette non-installation signal generating means that detect whether each paper feed cassette is installed or not and generate a signal when the paper feed cassette is not installed.

When the paper feed cassette to be used, for example, the non-feed paper cassette 31, is not installed, the contact of the upper size switch 36 is closed and a cassette non-installation signal is sent to the control circuit. When the unfeeding cassette 41 is not installed, the lower size switch 37 performs the same operation. Furthermore, in this state, the paper replenishment indicator lamp in the lamp section 56 blinks, and the input of the copy key 50 is not accepted.

Further, paper empty switches 38 and 39 are paper empty detection devices that detect the presence or absence of transfer paper in each paper feed cassette and issue a signal.

If there is no transfer paper in either or the refeed cassette, a paper out signal is sent to the control circuit. In this state, the paper replenishment indicator lamp in the lamp section 55 blinks as described above, and the input of the copy key 50 is not accepted.

A manual feed switch 42 is provided as a pretext for loading the transfer paper P1 in the manual paper feed section 2. This switch is in the paper insertion detection H position which detects whether the transfer paper P1 is inserted or not and issues a signal. When the transfer paper P1 is inserted into the manual paper feed section 2, the manual feed switch 4
Contact No. 2 closes and a paper insertion signal is sent to the control circuit.

In this state, the manual paper feed section setting is displayed on the liquid crystal display section 62, and input of the cassette selection key 59 is no longer accepted.

FIG. 1 shows the overall υjn circuit of II according to this embodiment. That is, the CPU 70 is the main ill 1
It is the 11th section and controls the entire copier. This CPU70
The following devices are connected to the internal input via an input interface circuit 71. Paper stop switch 1
0. Input switches 72 such as various keys on the operation panel 87
．． Other various switches and sensors necessary for close-up operation 741 Manual feed switch 42 for detecting the insertion of transfer paper into the manual paper feed section 2. These include a transfer paper empty detection device 76 and a cassette non-installation signal generation means 77 of the non-feed paper cassette section 3, a transfer paper empty detection device 78 and a cassette non-installation signal generation means 79 of the paper non-feed cassette section 4, and the like. Also, devices below the CPU 70 are connected. The lamp part 55 of the operation panel 87, the display device 83 such as the liquid crystal display part 62, and the manual paper feed part 2. Various power sources 84, various motors 85, and various solenoids 86 for the upper upper digit cassette section 3 and the unfeeding cassette section 4
That is.

The cassette non-installation signal generating means 77 and 79 include the above-mentioned upper size switch 36 and lower size switch 37. Furthermore, an identification information generating means (not shown) is also provided for generating an identification code unique to the cassette (indicating the size of the transfer paper stored therein). This signal is also sent to the CPU 70 via the input interface circuit 71.
The size of the transfer paper can be visually confirmed because the size of the transfer paper is inputted to the image data and displayed on the operation panel 87 via the rough output interface circuit 82.

Further, the signal from the paper stop switch 10 is also input to the CPU 70 via the input interface circuit 71.

The signal from the paper stop switch 10 is an ON signal that synchronizes the rotation of the photosensitive drum 16 and the conveyance of the transfer paper P in the copying operation of the main body 1 described above, and sends out the transfer paper P from the registration row 511. It's a signal.

This signal is counted by the counting function of the program within the CPU 70. Further, the count value is stored in the storage device i81 as needed.

Said storage device! 81 is an EEPROM (read-only memory that can be erased and written automatically), and the CPU
This is a storage device that stores the number of sheets to be fed (number of times of sheet feeding operation) calculated in step 70, and its details will be explained below.

As shown in FIG. 5, in this embodiment, in order to store the number of sheets to be fed for each paper feed section in the storage device 81, a memory area 811 for manual paper feed section. A storage area 812 for the unfed cassette section and a storage area 813 for the unfed cassette section are provided, and a storage area 814 for the total number of fed sheets is provided to store the total number of fed sheets. These storage areas are selected according to the above-mentioned settings of the paper feed unit used, and the count data is stored. The counting data stored in the area for each paper feed item is composed of, for example, 4 pits x 5, and is stored in the BCD.
Stored in code. Further, the count data stored at the above-mentioned total address is composed of, for example, 4 bits x 6, and is stored in a BCD code.

Next, the operation of the paper feeding section in the above configuration will be mainly explained. First, the operation of the paper feeding device from the time the power is turned on will be explained using the flowcharts shown in FIGS. 6 and 7. When the power is turned on, the process proceeds to step 90. In step 90, it is checked whether warming up of the heat roller 2o has been completed. When the process is completed, the copy permission display lamp on the operation panel 87 is turned on to enter a standby state, and key operations on the operation panel 87 are accepted in step 91. Next, the process proceeds to step 92, in which it is checked whether the manual feed switch 42 is turned on in order to check whether the manual feed tray 2 is to be used. If it is not turned on, the process proceeds to step 93; if it is turned on, the process proceeds to step 99. In step 99, the manual paper feed section 2 is selected and the process proceeds to step 103. Also step 93
Then, it is checked whether the unfeed paper cassette section 4 is installed based on the lower paper cassette uninstalled signal in the insertion slot of the sketch paper cassette section 4, and even if it is installed, it is checked whether the transfer paper P3 is set or not. Paper empty detection bag! ! 78
Check it out. If the transfer paper P3 is not set, the process advances to step 94. In step 94, the unfed paper cassette 33
Check about. If the transfer paper P2 is not set, the process advances to step 95. In step 95, the transfer paper replenishment lamp on the operation panel 87 is turned on, and the copy-ready display lamp on the operation panel 87 is also turned off, returning to the standby state. In this way, when the manual paper feed section 2 is not used and the unfed paper cassette 31 and the unfed paper cassette 41 are not installed or the transfer paper P is empty, replenishment of the transfer paper P is prompted. In step 93, if the unfeed paper cassette 41 is installed, step 9
Proceed to step 6. In step 96, it is checked whether the main paper feed cassette section 3 is installed, and even if it is installed, the transfer sheet empty detection device 76 checks whether the transfer sheet P2 is set. If the transfer paper P2 is set, the process advances to step 98. In step 98, it is checked whether or not the non-feeding cassette unit 4 is currently selected by the cassette selection key 59. If the non-feeding cassette unit 4 has been selected, the process advances to step 100. In step 100, the unfed paper cassette section 4 is selected,
Proceed to step 103. In step 96, if the main paper feed cassette 3 is not loaded in the 'IA' state, step 98 is skipped and the process proceeds to step 100. If the overprint paper cassette section 3 is installed in step 94 or if the non-feed paper cassette section 4 is selected in step 98, the process advances to step 101.

In step 101, the main paper feed cassette section 3 is selected, and the process proceeds to step 103. In this way, when the main paper feed cassette section 31 and the non-paper feed cassette section 41, or either one of them is not installed, selection of that paper feed cassette section is prohibited. In step 103,
At the same time, the storage area of the storage device [81 corresponding to the selected paper feed cassette section is set, and at the same time, the size of the transfer paper P in the selected paper feed cassette section is displayed. That is, the size of the stored transfer paper P is determined based on the paper feed cassette identification code of the selected paper feed cassette section, and the size is displayed on the liquid crystal display section 62 on the operation panel 87.

When the size of the transfer paper P is displayed in this way, step 1
Proceed to 04. In step 104, it is checked whether there is any abnormality inside the copying machine. If there is an abnormality, the abnormality will be handled and the system will return to the standby state. If there is no abnormality, proceed to step 105. In step 105, the operation panel 87
Check whether the upper copy key 50 is turned on.

If it is turned on, the copying operation is started and the process advances to step 106. If it is not turned on, it returns to standby mode.

In step 106, various lenses, various motors, various power supplies, and various lamps are turned on, and the process proceeds to step 107. In step 107, the pickup roller in the paper feeding device of the selected paper feeding unit rotates to start feeding paper, and the process proceeds to step 108.

In step 108, the feed roller is rotated to convey the picked up transfer paper P, and in step 10
Proceed to step 9. In step 109, the vapor stop switch 10 is turned on after a predetermined time has elapsed after the feed roller conveys the transfer paper P@, and the process proceeds to step 110. In step 10, the display content of the sheet number display section 56 on the operation panel 87 is reduced by "1", and the process proceeds to step 111. In step 111, data stored in the storage area in the storage device 81 corresponding to the used supply unit is read, and in step 11
Proceed to step 12. In step 112, the read data is
1'' is added and the process proceeds to step 113. Step 113
Then, the added data is stored again in the storage area from which it was read, and the process proceeds to step 114. In step 114, the registration roller 11 is rotated to transfer the image onto the transfer sheet 1! It is transported onto the container 9 and the process proceeds to step 115.

Step 110 may be performed anywhere between steps 111 to 114 or after ftJ.

In step 115, it is checked whether or not the set number of sheets has been fed. If paper feeding has ended, the process advances to step 116. In step 116, various solenoids, various motors, various power supplies, and various lamps are turned off,
Return to standby state.

If the set number of sheets has not been fed in step 115, the process returns to step 107.

These steps 110 to 113 may be parallel to step 114.

Next, the operation of reading out the cumulative number of fed sheets in each sheet feeding section will be explained using the flowchart shown in FIG. When reading the cumulative number of sheets fed from the standby state, step 12
Go to 0. In step 120, it is checked whether there is a request to display the total number of sheets fed (inputted by pressing the counter key 53 on the operation panel 87). If there is a request to display the total number of fed sheets, the process advances to step 121. In step 121, the contents of the storage area storing the total number of fed sheets in the storage device 81 are displayed on the liquid crystal display section 62 on the operation panel 87, and the process proceeds to step 129. In step 120 above, if there is no request to display the total number of fed sheets, step 1
Proceed to step 22. In step 122, the unfed paper cassette section 3
It is checked whether there is a request to display the number of fed sheets (inputted by simultaneously opening the counter key 53 and the cassette selection key 59 on the operation panel 87 one by one). If there is a request to display the number of sheets fed, step 12
Proceed to step 3. In step 123, the contents of the storage area of the storage device ft81 corresponding to the unfed paper cassette section 3 in the storage device 81 are displayed on the liquid crystal display section 62, and the process proceeds to step 129. In step 122, if there is no display request, the process proceeds to step 124. In step 124, there is a request to display the number of sheets fed by the sketch paper cassette unit 4 (inputted by pressing the cassette selection key 59 twice while pressing the counter key 53 once on the operation panel 87). Check whether or not. If there is a request to display the number of fed sheets, the process advances to step 125.

In step 125, the contents of the storage area of the storage device 81 corresponding to the sketch paper cassette section 4 in the storage device 81 are displayed on the liquid crystal display section 62, and the process proceeds to step 129. If there is no display request in step 124 above, step 126
Proceed to. In step 126, there is a request to display the number of sheets fed by the manual paper feed section 2 (inputted by pressing the cassette selection key 59 three times while pressing the counter key 53 once on the operation panel 87). Check whether or not. If there is a request to display the number of sheets fed, step 1
Proceed to step 28. In step 128, the record I! of the storage device N81 corresponding to the manual paper feed section 2 in the storage device 81 is entered! The contents of the area are displayed on the liquid crystal display section 62 and the process proceeds to step 129. If there is no display request in step 126, the process advances to step 127. In step 129, it is checked whether there is a request to clear the number of sheets fed by each sheet feeding section (inputted by pressing the information key 63 on the operation panel 87). If there is a clearing request, step 130
Proceed to. If there is no clearing request, the process advances to step 131. In step 131, it is checked whether a predetermined period of time has elapsed since the number of fed sheets was displayed. If the predetermined time has not elapsed, the process advances to step 129. If the predetermined time has elapsed, the process proceeds to step 130. In step 130, the liquid crystal display section 62
Clear the display and proceed to step 127. Step 1
At step 27, the normal mode is displayed at 62 on the liquid crystal display section, and the device returns to the standby state.

With the configuration as described above, since the count data is stored in BCD code, there is no need for data conversion when displaying the data. When displaying the counting data, it is displayed on the liquid crystal display section 62 on the operation panel 87, so no extra parts are required. Further, if the signal from the paper stop switch 10 is counted, it is possible to obtain a more accurate paper feed count value since this is a position where the probability of jamming of the transfer paper is low.

Paper stop switch 1 has a low probability of jamming.
0 is located upstream of the transfer paper conveyance path 8, and this can be mentioned because the number of conveyance rollers used up to that point is small.

Note that the present invention is not limited to the above embodiments, and hardware may be used as the counting means. For example, a switch signal may be used as the counting signal. In this case, the number of close-up shots can be counted.

Further, the sheet number readout switch is not limited to the present invention. The total number of fed sheets is calculated by calculating the other number of fed sheets using the CPU.
It may be displayed. Furthermore, the apparatus of the present invention can also be used in office automation equipment other than copying machines.

[Effects of the Invention] As described in detail above, according to the present invention, the number of fed sheets for each paper feed item can be stored and displayed, so that each conveyance roller of a paper feeding means equipped with a plurality of paper feeding sections can be stored and displayed. This has the effect that it is possible to easily and accurately know when to replace the product.

[Brief explanation of the drawing]

1 to 8 show an embodiment of the present invention, in which FIG. 1 is a block diagram of a control device, FIG. 2 is a schematic sectional view of a copying machine, and FIG. 3 is a sectional view of a paper feed device. Schematic diagram, Figure 4 is a front view of the operation panel, Figure 5 is a configuration diagram of the storage device, Figure 6 is the first half of the operation flowchart of the paper feeder, Figure 7 is the first half of the operation flowchart of the paper feeder, and Figure 8 is the first half of the operation flowchart of the paper feeder. The figure is a flowchart of the conveyance roller replacement operation. 2...Manual paper feed section, 3...Non-feed paper cassette section, 4
...Drawing paper cassette section, 10...Paper stop switch, 42...Manual feed switch, 5
0...Copy key, 53...Counter key, 59.
...Cassette selection key, 62...LCD display section, 63.
...Information key, 70...CPU181
···Storage device

Claims (1)

[Scope of Claims] A paper feeding means including a plurality of paper feeding sections each capable of supplying transfer paper of a plurality of different sizes; an output means for emitting a signal corresponding to the paper feeding operation of the paper feeding means; It is characterized by comprising a counting means for counting the signals of the output means, a storage means for storing the count data of the counting means, a control means for controlling the storage means, and a display section for displaying the count data. A device for counting the number of fed sheets.