JPH04277757A - Document feeder for copying machine - Google Patents

Abstract

PURPOSE:To offer the document feeder for the copying machine which is prevented from entering a paper empty state halfway in copying operation, and prevents miscopying and easily takes a copy on special paper without any miscopying. CONSTITUTION:The document feeder for the copying machine is so constituted that paper storage parts 41 and 42 where paper is stored can move between a paper feed position and a paper supplementation position. When a set copy quantity is larger than the rest of paper stored in the selected paper storage part 41 or 42, the selected paper storage part 41 or 42 moves from the storage position to the paper supplementation position. Further, when the selected paper storage part is a stored paper storage stored with the special paper, the paper storage part stored with the special paper moves from the paper feed position to the supplementation position.

Description

[Detailed description of the invention]

0001

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a paper feeding device for a copying machine, and more particularly, the present invention relates to a paper feeding device for a copying machine, and more specifically, for a copying machine in which a paper storage section for storing paper is movable between a paper feeding position and a paper replenishment position. Regarding a paper feeding device.

0002

2. Description of the Related Art Generally, a copying machine is equipped with a plurality of paper storage sections each containing paper of different sizes. A storage section is selected and paper is fed from this paper storage section, and the currently selected paper storage section is displayed on the operation panel of the copying machine or the like.

By the way, in a copying machine, when there is no paper in the selected paper storage section or when there is no paper in the selected paper storage section during copying, the copying operation is stopped and a message is displayed on the operation panel of the copying machine. , a so-called paper empty display appears, indicating that there is no paper in the paper storage section. When the paper empty display appears, the user knows the currently selected paper storage section from the display on the operation panel and the size of the copied paper discharged to the output tray of the copying machine, and then selects the paper storage section. Paper will be replenished.

Conventionally, in the paper feed device of this type of copying machine, the paper storage section consists of a paper feed tray for storing paper, and the paper can be moved to the feeding position within the copying machine body and pulled out from the copying machine body by operating a switch. It is movable between the paper supply position and the paper supply position, and by operating the operation switch corresponding to the paper storage paper supply base that is empty of paper, the paper storage paper supply base can be moved from the paper supply position to the paper supply position. It is well known that the system was moved to
(See Publication No. 9).

Further, the paper storage section is composed of a cassette for storing paper having a predetermined size, and when the selected cassette runs out of paper, the cassette is automatically moved from the paper feeding position to the paper replenishment position. It is also well known that the cassette can be moved to make it easier to find a cassette that has run out of paper and to replenish paper (for example, Japanese Patent Laid-Open No. 57-19
(See Publication No. 9737).

[0006]

[Problems to be Solved by the Invention] However, with the conventional copying machine paper feeding device described above, when the paper becomes empty during copying, the user can check the display on the operation panel or the paper output tray of the copying machine as described above. After knowing the currently selected paper storage section from the size of the copied paper that has been ejected and replenishing the paper storage section, you can check the originals that were copied when the copying operation stops due to paper empty. You must check the number of copies and restart the copying machine. For this reason, if the paper becomes empty during copying, it is not only very troublesome to restart the copying machine, but also makes it difficult to check the original that was copied and the number of copies when the copying operation stops due to paper empty. There was a problem that mistakes could cause copy mistakes.

[0007] Furthermore, in the paper feeding device of the conventional copying machine described above,
When copying onto special paper that is different from regular paper, such as OHP sheets or color paper for use with overhead projectors, the user must store the special paper from multiple paper feed trays or cassettes. Identify the specific paper feed trays and cassettes that are used to store paper, and check whether these paper feed trays and cassettes contain more than the required number of special papers before copying. There was also the problem that copying onto special paper was troublesome, and copying errors were likely to occur.

SUMMARY OF THE INVENTION An object of the present invention is to provide a paper feeding device for a copying machine that prevents paper emptying during copying and also prevents copy errors from occurring.

Another object of the present invention is to provide a paper feeding device for a copying machine that allows copying onto special paper easily without causing copy errors.

0010

[Means for Solving the Problems] In order to achieve the above object, the present invention provides a paper storage section that stores paper, which is movable between a paper feeding position and a paper replenishment position, and a paper storage section that stores paper. A paper feeding device for a copying machine, comprising a drive means for driving between a paper position and a paper replenishment position, and a control means for the drive means, the control means for controlling a set number of copies and a paper stored in a selected paper storage section. and a remaining amount of paper, and when the set number of copies is greater than the remaining amount of paper, a command signal is output to the driving means to move the paper storage section from the paper feeding position to the paper replenishment position. There is.

[0011] In order to achieve the above other objects, the present invention
A paper storage section for storing paper is movable between a paper feeding position and a paper replenishment position, and a driving means and a control means for driving the paper storage section between the paper feeding position and the paper replenishment position are provided. A paper feeding device for a copying machine, wherein the control means feeds the paper storage section when the selected paper storage section is stored in advance as storing special paper. It is characterized in that a command signal for moving from the paper position to the paper replenishment position is output to the driving means.

0012

[Operation] A command signal is output when the set number of copies is greater than the remaining amount of paper stored in the selected paper storage section. When this command signal is input to the driving means, the driving means moves the selected paper storage section from the paper feeding position to the paper replenishing position.

Further, the above command signal is output when the selected paper storage section is a paper storage section in which it is stored in advance that special paper is stored therein. When this command signal is input to the driving means, the driving means moves the paper storage section in which the special paper is stored from the paper feeding position to the paper replenishment position.

[0014]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, embodiments of the present invention will be described with reference to the accompanying drawings.

Configuration of automatic document feeder As shown in FIG.
rculatingauto Document
Handler: Hereinafter, referred to as RDH. ) 1 includes a document placement tray 2, a paper feed belt 3, a pair of paper feed rollers 4, a reversing guide plate 5, a transport belt 6, a reversing roller 7, a pair of ejection rollers 8, a document width direction regulating plate 9, and a document length detection It is composed of a sensor 11 and a document presence/absence sensor 12.

[0016] The RDH 1 circulates and conveys the original in order from the last page. The original is placed on the original tray 2 with the back side of the last page facing down, and the original width direction regulating plate 9 is set by the user. do. The last page of the document is pulled out by the rotation of the paper feed belt 3, and is transferred from the paper feed roller pair 4 via the reversing guide plate 5 to the conveyor belt 6 and the document table glass 1.
3, and is set at a predetermined position on the document table glass 13 by the rotation of the conveyor belt 6, and is irradiated with light by the optical system 23. After image exposure, the original is transferred to the conveyor belt 6
The document is conveyed from above the document table glass 13 to the right in FIG. be done.

To detect the number of originals, the originals are not image-exposed and the RDH 1 is circulated until the original presence/absence sensor 12 outputs a signal indicating that there are no more originals. At that time, the original length detection sensor 11 Detected by the number of times the is turned on. The document width direction size is detected by the user setting the document width direction regulating plate 9, and the document length direction size is detected by the document length detection sensor 11 being turned on when the number of document sheets is detected. It is detected by converting the length of time (the document moves at a constant speed) into length.

Structure of Copying Machine Main Body In the copying machine main body 20, a photosensitive drum 21 rotates in the direction of arrow c based on a print signal, and a predetermined potential is applied to the outer peripheral surface by discharging from a charging charger 22.

On the other hand, in the optical system 23, the exposure lamp 24 is turned on, and the reflected light from the original is reflected through a mirror system and a lens.
The outer peripheral surface of the photoreceptor drum 21 is exposed from between the charger 22 and the inter-image eraser 25, and an electrostatic latent image corresponding to the original image is formed.

The outer circumferential surface of the photosensitive drum 21 on which the electrostatic latent image is formed is such that the electric charge in the area before the front end and after the rear end of the image area where the electrostatic latent image is formed is absorbed by the light of the inter-image eraser 25. Erases by irradiation. Next, the electrostatic latent image on the photosensitive drum 21 is transferred to a developing area X, which is a portion facing the developing device 26.
Here, the toner is supplied from the developing device 26 and visualized as a toner image. Subsequently, the toner image is conveyed to the transfer area Y, which is a portion facing the transfer charger 28, where the copy paper (hereinafter referred to as
It is written as paper. ) is transcribed.

The outer peripheral surface of the photoreceptor drum 21 that has passed through the transfer area Y moves in the direction of arrow c, and the toner remaining on the photoreceptor drum 21 without being transferred to the paper is removed by the cleaning device 32, and the toner is removed by the eraser lamp 33. The residual charge is erased by the illumination and the paper is prepared for the next copying.

The paper to which the toner image has been transferred in the transfer area Y is separated from the outer circumference of the photosensitive drum 21 based on the discharge of the separation charger 34, and is conveyed to the fixing device 36 by the conveyor belt 35, where the toner image is is heat-fixed and discharged onto the discharge tray 37.

The paper feed device 31 feeds paper 4 of different sizes.
Two paper storage sections 41 and 42 that accommodate paper 3a and 43b
The paper 43a or 4 paper can be loaded from either the selected paper storage section 41 or the paper storage section 42.
3b is fed.

FIG. 1 shows the structure of the paper storage section 41. This paper storage section 41 includes a paper deck elevator mechanism 45 of a paper deck 44 on which paper 43a is placed, and the paper deck 44 and paper deck elevator mechanism 4.
an automatic push/pull mechanism 47 for pushing out and pulling in the tray 46 supporting the copying machine 5 toward the front side of the copying machine main body 20;
It has a configuration that combines the following.

The paper deck elevator mechanism 45 of the paper deck 44 has the following construction. That is,
A chain 48 is connected to the paper deck 44, and the output of the elevator lift-up motor M1 is transmitted to the chain 48 via a worm 49, a worm wheel 51, and a chain sprocket 52, and the paper deck 44 is raised. and descend. The rotation and stopping of the elevator lift-up motor M1 is controlled by the central processing unit (hereinafter referred to as CPU) 1 of the control section shown in FIG. 5, which controls the copying machine main body 20, as will be described later.
Controlled by 01.

Furthermore, the automatic push-out/pull-in mechanism 47 for the tray 46 has the following configuration. That is, a rack 53 is provided on one side of the tray 46, and this rack 5
A pinion 54 is engaged with the pinion 3. Then, the output of the drive motor M2 is transmitted from the pinion 54 to the rack 53 via the pinions 56 and 57, and the tray 46 is pushed out and pulled in the front of the copying machine main body 20.

When the paper storage section 41 moves from the paper feeding position housed in the copying machine main body 20 to the paper replenishing position outside the copying machine main body 20, an instruction signal from the CPU 101 shown in FIG. Beta lift up motor M1
rotates and the paper deck 44 descends. When the paper deck 44 descends to the lower limit position, the lower limit position detection sensor 5
8 detects this and outputs a signal, and the paper deck 44 stops at the lower limit position. When the paper deck 44 is stopped at the lower limit position, the drive motor M2 rotates to drive the tray 46 and push the tray 46 forward of the copying machine main body 20. When the tray 46 reaches the extrusion limit position, the extrusion limit detection sensor 59 detects it and outputs a signal, and the tray 46 stops at the extrusion limit position.

On the other hand, when the paper storage section 41 moves from the paper replenishing position to the paper feeding position within the copying machine main body 20, the opposite operation to that described above is performed. At this time, the retraction limit position of the tray 46 into the copying machine main body 20 is detected by the retraction limit detection sensor 61. In addition, the upper limit position of the paper deck 44 is as shown in FIG.
When the paper feed roller 62 comes into pressure contact with the topmost paper 43a placed on the paper deck 44,
Upper limit position detection sensor 63 that detects it and outputs a signal
Detected by The movement of the paper storage section 41 to the paper feeding position is automatically performed by the user operating a storage switch 64 provided in front of the paper storage section 41 after replenishing the paper 43a. And the remaining amount of paper is
After the paper 43a is replenished, detection is made by counting the pulses that drive the elevator lift-up motor M1. Note that the final paper empty state is detected by a paper presence/absence sensor 60 provided at the bottom of the paper deck 44.

The other paper storage section 42 has the same structure as the paper storage section 41 described above, so a description thereof will be omitted.

Returning to FIG. 2, the paper storage section 41 or 4
The paper 43a or 43b sent out from the paper 43a or 43b is conveyed upward along the ascending path 65. When the paper 43a or 43b is detected by the pre-registration sensor 66, it is stopped in front of the timing roller 67, and sent out to the transfer area Y by the timing roller 67 in time with the toner image on the outer peripheral surface of the photoreceptor drum 21. It will be done.

Regarding single multi-copy operation, next,
The operation of copying (single multi-copy) in which only one side of a large number of originals is continuously copied using the RDH 1 will be described.

In the RDH 1, the above-mentioned document feeding operation is performed continuously, and the documents are conveyed one by one to the illuminated position on the document platen glass 13, and the documents are sequentially transported starting from the document whose illumination by the exposure lamp 24 has been completed. It is discharged onto the loading tray 2.

In the copying machine main body 20, the optical system 23, photosensitive drum 21, peripheral mechanisms, etc. repeat the above-described copying operation, and the paper 43a sent to the transfer area Y is
Alternatively, a toner image is transferred to 43b.

In the paper feeding device 31, the timing roller 67
The paper 43a or 43b is fed to the transfer area Y in synchronization with the toner image. Further, when the paper 43a or 43b is waiting in front of the timing roller 67, if it is confirmed that there is a document on the document tray 2 based on the signal from the document presence/absence sensor 12, the document is placed on the document tray 2. The paper 43a or 43b corresponding to the original on the tray 2 is sent out to the rear of the paper 43a or 43b waiting in front of the timing roller 67. Then, when the first paper 43a or 43b waiting in front of the timing roller 67 is sent out to the transfer area Y, the following second paper 43a or 43b is sent to the timing roller 67.
It is transported to just before 7. Further, if there is a document on the document tray 2 at this point, the third paper 43a or 43b is sent out from the paper storage section 41 or 42 behind the second paper 43a or 43b.

In this way, the paper 43a or 43b for the original waiting on the original tray 2 is taken out first from the paper storage section 41 or 42 and waits in the middle of the paper feeding path, so that the paper 43a or 43b is is the transfer area Y
be transported quickly. In other words, a large number of originals can be copied in a short time.

Regarding the operation panel, the operation panel 69 is shown in FIG. The operation panel 69 is provided with keys described below.

The print key 70 is a key for starting copying. The numeric keys 71 to 80 are keys for entering numbers such as the number of copies. Clear stop key 8
1 has a stop key function for stopping multi-copying and a function for clearing set numbers.

The paper feed port selection key 82 is a key for selecting the paper storage sections 41 and 42. Copy magnification selection keys 83 to 86 are keys for selecting copy magnifications of equal magnification, two-stage fixed reduction, and one-stage fixed enlargement, respectively. The all reset key 87 is a key for setting the copy mode to an initial state. The three-digit display segment 88 is
Displays the number of copies, etc. Display segment 89 displays the copy magnification. Display segment 90 displays the paper size. The upper paper feed selection display LED 91 is a light emitting diode (LED) that indicates that the upper paper storage section 41 is selected.

The lower paper feed selection display LED 92 is an LED that indicates that the lower paper storage section 42 is selected.
It is D. Top feed special paper input switch and display L
ED93 is a switch for remembering that special paper such as an OHP sheet for an overhead projector is stored in the upper paper storage section 41. Similarly, the lower paper feed special paper input switch and display LED 94 are switches for remembering that special paper such as an OHP sheet for an overhead projector is stored in the lower paper storage section 42.

The magnification key selection display LEDs 96 to 99 light up in response to the operation of the copy magnification selection keys 83 to 86.

FIG. 5 shows the structure of the control section of the paper storage sections 41 and 42, the structure of which has been explained above.

In FIG. 5, a CPU 101 is a CPU that controls sheet feeding and image formation in the copying machine main body 20, and the input ports of its expansion elements 102 and 103 are equipped with the various sensors described in FIGS. 1 and 2. and switch outputs are input. In addition, the output port includes a paper storage section 41,
42 elevator lift-up motors M1 and drive motors M2 are connected through a drive circuit (not shown), and by rotating forward and reverse, the paper deck 44 is lifted up and down or the tray 46 is pushed out and retracted. Further, the CPU 101 is connected to other control CPUs, and performs control by receiving various commands such as starting and canceling preheating through communication.

Regarding the control operation of the paper storage units 41 and 42 Next, the control operation of the paper storage units 41 and 42 executed by the CPU 101 will be explained with reference to the flowchart.

FIG. 6 shows the flow of the main copying routine. First, initial settings are performed in step S1. That is, when the CPU 101 operates, it initializes the contents of the RAM that temporarily stores data, sets various functions, and clears various timer counters. Next, the process proceeds to step S2, where the internal timer is cleared and started. Next, the process proceeds to steps S3 and S4, and various processes such as the number of copies and movement of the paper storage units 41 and 42 from the paper feeding position to the paper replenishment position are performed in a subroutine, and in step S5, a copying operation routine is performed to make copies. perform an action. Next, in step S6, communication and other various processes are performed, and in step S7, it is checked whether the internal timer has expired or not. If it has not finished, wait until it has finished, and if it has finished, return to step S2, Repeat the above. In this manner, various types of control of the copying machine are performed based on one operation time of the main routine.

FIG. 7 shows a routine for determining the set number of copies. First, in step S11, the numeric keypad 71 of the panel 69
- Receives a numeric input from 80, and in step S12 RDH1
Detects the number and size of originals set in the machine. Then, in step S13, the calculation of set number of sheets=number of placed sheets×number of original sheets is performed. In step S14, the upper paper feed special paper input switch and display LED 93 of the panel 69, the lower paper feed special paper input switch and display LED 94, the paper storage section
1. Receive an input as to whether the paper stored in the paper storage section 42 is special paper, store it in the memory, and then return.

FIG. 8 shows a routine for detecting the number and size of original sheets. First, in step S21, it is determined whether there is a document in the tray. If there is no document, the process returns; if there is a document, step S21 is performed.
In step S22, one original is circulated, and in step S23, the value is updated to the value obtained by adding 1 to the current number of originals. And step S
In step S24, it is determined whether or not the document length detection sensor 11 is on. If the document length detection sensor 11 is on, the current counter S is updated to S+1 in step S25, and in step S26 At , the ON time of the document length detection sensor 11 is converted to the document size, and the document size is detected. Further, in step S24, the document length detection sensor 1
Returns if it is determined that 1 is not on.

FIG. 9 shows a paper storage section discharging routine for moving the paper storage sections 41 and 42 to the paper replenishment position. First, in step S31, the size of copy paper is determined from the copy magnification. In step S32, it is determined whether or not the corresponding copy size is in the paper storage units 41 and 42. If not, after performing the paper storage unit ejection operation 1 in step S33,
Return. If there is a corresponding copy size, step S3
In step S35, it is determined whether the paper storage section, for example, the paper storage section 41, is a special paper cassette, and if it is special paper, the process moves to step S35, paper storage section discharge operation 2. If it is determined in step S34 that the paper is not special paper, it is determined in step S36 whether the remaining amount is greater than the set number of sheets. If the remaining amount is greater than or equal to the set number of sheets, return; if it is less than the set number of sheets, proceed to step S.
After performing the paper storage section discharging operation 1 of No. 37, the process returns.

A copying operation routine is shown in FIG. first,
A normal copying operation is performed in step S41. Then, in step S42, it is determined whether there is any paper in the corresponding paper storage section 41 or 42. If there is, the process returns, and if there is no, the process returns after executing the paper storage section discharging operation 1 in step S43.

The paper storage section discharge operation 1 subroutine is shown in FIGS. 11 and 12. First, in step S51, it is determined whether or not the paper storage units 41, 42 are currently in the storage state at the paper feeding position. If the paper storage units 41, 42 are in the storage state, the paper storage units 41, 42 are ejected in step S52, and the remaining paper is removed in step S53. The amount memory is cleared and the process proceeds to step S54. If it is determined in step S51 that the paper storage units 41 and 42 are not in the storage position, the process proceeds to step S54. In step S54, it is determined whether or not there is a storage input for the paper storage units 41, 42 from the storage switch 64 by the user;
If not, the process returns, and if so, the paper is stored in the paper feeding position of the paper storage units 41 and 42 in step S55. Step S
If the elevator lift-up motor M1 is not ascending at step 56, the process returns; if it is ascending, the pulses of the elevator lift-up motor M1 are counted up at step S57, and at step S58, the pulses of the elevator lift-up motor M1 are converted into the number of remaining paper sheets and stored in the memory.

The subroutine of the paper storage section discharge operation 2 is shown in FIGS. 13 and 14. First, in step S61, it is determined whether or not A time has elapsed since the paper storage sections 41 and 42 were last stored. If A time has not elapsed, the process returns; and if A time has elapsed, the process proceeds to step S62. It is determined whether or not the storage sections 41 and 42 are in the storage state, and if the paper storage sections 41 and 42 are in the storage state, the paper storage sections 41 and 42 are ejected in step S63 by moving them to the paper replenishment position, and in step S6
4 to clear the paper remaining memory. If it is determined in step S62 that the paper storage units 41 and 42 are not stored, the process advances to step S65. Next, step S65
In step S66, it is determined whether B time has elapsed since the paper storage units 41 and 42 were discharged. If B time has not elapsed, the process returns. The paper is stored in the paper feed position. Therefore,
In step S67, it is determined whether or not the paper deck 44 is rising. If the paper deck 44 is not rising, the process returns; if it is rising, the pulse of the elevator lift-up motor M1 is counted up in step S68, and in step S69. After converting to the number of remaining paper sheets and storing it in memory,
Return.

The present invention is not limited to those in which the paper storage section has the paper feeding mechanism described in the above embodiments, but can also be applied to those in which paper is housed in a so-called cassette and fed.

[0052]

According to the present invention, when the set number of copies is greater than the remaining amount of paper stored in the selected paper storage section, the selected paper storage section is moved from the paper feeding position to the paper replenishment position. Since it moves, copying will not start unless paper is refilled in the paper storage section that has been moved to this paper replenishment position, and it is possible to reliably prevent paper from becoming empty during copying, and prevent copy errors due to empty paper during copying. can also be reliably prevented.

Further, according to the present invention, when the selected paper storage section is a paper storage section in which it is stored in advance that special paper is stored, the paper storage section that stores special paper is not supplied. Since it moves from the paper position to the paper replenishment position, it is possible to check the special paper in the paper storage section that has been moved to the paper replenishment position and copy on the special paper, ensuring that mistakes are prevented when copying on special paper. be able to.

[Brief explanation of the drawing]

FIG. 1 is an explanatory diagram showing the structure of an embodiment of a paper feeding device for a copying machine according to the present invention.

FIG. 2 is a sectional view showing the structure of a copying machine equipped with the paper feeding device of the copying machine shown in FIG. 1;

FIG. 3 is an explanatory diagram showing an installation configuration of an upper limit position detection sensor of the paper deck of the paper feeding device of the copying machine shown in FIG. 1;

FIG. 4 is a plan view of the operation panel of the copying machine shown in FIG. 2;

FIG. 5 is an explanatory diagram of a control section of the copying machine shown in FIG. 2;

6 is a flowchart of a main routine for controlling the paper feed device of the copying machine executed by the control unit of the copying machine shown in FIG. 2; FIG.

FIG. 7 is a part of a flowchart of a routine for determining the set number of sheets for the paper feed device of the copying machine, which is executed by the control unit of the copying machine shown in FIG. 2;

8 is a flowchart of a routine for detecting the number and size of originals in the paper feeder of the copying machine, which is executed by the control unit of the copying machine shown in FIG. 2;

9 is a flowchart of a routine for discharging the paper storage section of the paper feeder of the copying machine, which is executed by the control unit of the copying machine shown in FIG. 2;

10 is a flowchart of a copying operation routine of the paper feeding device of the copying machine executed by the control unit of the copying machine shown in FIG. 2;

11 is a part of a flowchart of a subroutine of a paper storage section ejection operation 1 of a paper feeding device of a copying machine executed by a control unit of the copying machine shown in FIG. 2; FIG.

12 is a part of the flow of a subroutine of a paper storage section ejection operation 1 of the paper feeding device of the copying machine, which is executed by the control unit of the copying machine shown in FIG. 2;

13 is a part of a flowchart of a subroutine of a paper storage section ejection operation 2 of the paper feeding device of the copying machine executed by the control unit of the copying machine shown in FIG. 2; FIG.

14 is a part of the flow of a subroutine of a paper storage section ejection operation 2 of the paper feeding device of the copying machine executed by the control unit of the copying machine shown in FIG. 2; FIG.

[Explanation of symbols]

41 Paper storage section 42 Paper storage section 43a Paper 43b Paper 44 Paper deck 45 Paper deck elevator mechanism 46 Tray 47 Automatic extrusion/pull-in mechanism 91 Upper paper feed selection display LED 92 Lower paper feed selection display LED 93 Upper paper feed paper input switch and display LED9
4 Lower paper feed paper input switch and display LED10
1 CPU

Claims (2)

[Claims] 1. A paper storage section for storing paper is movable between a paper feeding position and a paper replenishment position, and a driving means for driving the paper storage section between the paper feeding position and the paper replenishment position. A paper feeding device for a copying machine comprising a control means, wherein the control means compares the set number of copies with the remaining amount of paper stored in the selected paper storage section,
A paper feeding device for a copying machine, characterized in that a command signal for moving the paper storage section from a paper feeding position to a paper replenishment position is output to the driving means when the set number of copies is greater than the remaining amount of paper. 2. A paper storage section for storing paper is movable between a paper feeding position and a paper replenishment position, and a drive means for driving the paper storage section between the paper feeding position and the paper replenishment position. and a control means for a copying machine, wherein the control means controls the paper feeding device when the selected paper storage section is a paper storage section stored in advance as storing special paper. A paper feeding device for a copying machine, characterized in that a command signal for moving a paper storage section from a paper feeding position to a paper replenishment position is output to the driving means.