JPH0122181B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application The present invention is applicable to machines such as electrophotographic copying machines and facsimile machines, which are used to produce stacked sheets of paper cut into various sizes and stacked together, or stacked sheets of originals of different types. In a sheet feeding device that can selectively feed sheets, it relates to a device that can selectively pull out a specific storage means from among a large number of storage means such as trays that store the same sheets. It is.

Prior Art For example, in a conventional electrophotographic copying machine,
Since paper storage trays are installed inside the aircraft, it was only possible to store two or three of the same paper storage trays.

In addition, there are many sizes of originals such as B4, B5, A4, and A5, and in order to avoid wasting paper, it is necessary to prepare many types of paper that correspond to the original size. If the paper size does not match the document size, the paper storage tray must be replaced, and the replacement work is complicated.

In particular, recently, electrophotographic copying machines capable of multi-step variable magnification copying have become widespread, and the frequency of replacing the paper storage tray described above has increased, making it impossible to ignore from the standpoint of copying work efficiency. In order to reduce the work as much as possible, if the number of paper storage trays stored in one copying machine is increased, the number of conveyance means such as paper feed rolls in the area where each tray is installed will correspondingly increase, and the paper feed The cost of the entire device will increase significantly.

As a solution to such problems, there is, for example, an automatic paper feeder disclosed in Japanese Utility Model Publication No. 57-48835.

This automatic paper feeder has multiple paper storage trays that can be moved between a paper feeding position and a non-paper feeding position depending on the paper size, while a single paper transport means feeds each paper storage tray. Each paper storage tray is normally placed in the paper feeding position, and when the desired paper storage tray is selected, the unselected storage tray is moved back to the non-paper feeding position to feed the paper. However, the moving mechanism of the sheet storage means applied to an automatic paper feeder with such a configuration is designed to move the conveying means to the paper feeding position of the selected storage tray. Since the sheet storage means is configured to be moved, the operability may deteriorate and the overall configuration of the sheet feeding device may become complicated, especially as the number of sheet storage means increases. There was a problem.

Purpose of the invention The purpose of the present invention is to eliminate such problems,
To provide a drawer device for a sheet storage means having a simple configuration and excellent operability, which moves only a selected sheet storage means from a plurality of sheet storage means to a paper feeding position. It is in.

Structure of the Invention The present invention comprises a plurality of support means 5 disposed vertically at required intervals, a plurality of sheet storage means 2 each supported by the support means 5 so as to be movable back and forth, In a sheet feeding device including a conveying means 18 that contacts the uppermost sheet 1 in the sheet storage means 2 and conveys it to the paper discharge side, each of the sheet storage means 2 is A biasing means that always biases backward, a cam member 43 attached to the sheet storage means 2 and tilted in the left-right direction, and a pivoting member adjacent to the cam member 43 that is driven to rotate about the vertical direction. a member 36, a lever means 38 projecting radially at an appropriate angle from each other at positions where they can collide with each of the cam members 43 on the pivoting member 36, and a pivoting drive means for pivoting the pivoting member 36. and an elevating means for elevating and lowering the conveying means 18 up and down along the paper discharge side of the sheet storage means 2, and driving and controlling the turning drive means and the elevating means to turn the turning member 36 at an appropriate angle. Thus, one lever means 38 acts on the corresponding cam member 43 to pull out the required sheet storage means 2 and to place said transport means 1 onto the sheet 1 in said sheet storage means 2.
The present invention is characterized by comprising a control means 50 for controlling 8 to come into contact with each other.

Embodiment An embodiment of the present invention illustrated in the drawings will be described below.

Copy paper 1 is a laminated sheet of paper cut and stacked in various sizes such as A3, A4, A5, B4, B5, etc. Copy paper 1 is divided into paper trays 2 according to size or in the vertical and horizontal directions. It is stored in a layered manner with different layers.

Reference numeral 4 denotes shelf supports oriented vertically, and on the front and rear shelf supports 4, at regular intervals in the vertical direction, there are shelves facing diagonally upward in the paper feeding direction (to the right in Figure 1). Six stages of shelf support members 5 are installed facing each other, and a paper tray 2 is placed on the shelf support member 5 via a guide roll 3. While the paper tray 2 is supported by the shelf support member 5, It is designed to be able to move back and forth along its length.

Further, the paper tray 2 is located closer to the paper feed position (first
A total of four guide rails 6 (two pairs, two pairs) are vertically oriented on both the left and right sides (the front and rear sides perpendicular to the plane of the paper in Figure 1), and the guide rails 6 have one A pair of elevating members 7 are fitted so as to be able to move up and down.

Furthermore, a screw rod 8 oriented parallel to the two guide rails 6 is pivotally supported via a bearing 9, and a bevel gear 10 is fitted to the lower end of the screw rod 8. Rotating shaft 12 of step motor 13 via bevel gear 11
The lifting member 7 is screwed to the screw rod 8, and when the step motor 13 is rotated in the forward and reverse directions,
The elevating member 7 is adapted to be driven up and down.

Moreover, in the elevating member 7, the paper tray 2
A bracket 14 is provided protrudingly on the opposite side, and the swing lever 1 is connected to the bracket 14 via a pivot shaft 15.
The base end of the paper feed roll shaft 17 is pivotally mounted on the tip of the swing lever 16, and the pulley 19 is integrated with the paper feed roll shaft 17.
A belt 20 is stretched around a drive pulley 21 which is supported on the same axis as the pivot shaft 15 of the swing lever 16, and a transmission means (not shown) and a paper feed clutch C (seventh When the driving pulley 21 connected to the drive pulley 21 is rotated in conjunction with the rotation of the transport roll 29, it is integrated with the roll shaft 17 via the belt 20, pulley 19 and paper feed roll shaft 17. The paper feed roll 18 is rotated counterclockwise in FIG.

In addition, at the lower part of the elevating member 7 near the paper tray 2,
A paper guide 22 is integrally attached so as to face diagonally downward, so that the copy paper 1 fed by the paper feed roll 18 is guided by the paper guide 22 into a pair of upper and lower transport rolls 29. It's summery.

Further, on the bottom surface of the paper guide 22, a paper 1
A reflective paper feed completion detector RS is installed so as not to interfere with the paper transport, and the detector RS detects the paper feed depending on the presence or absence of light that has passed through the hole in the paper guide 22 and reflected on the paper 1. It is now possible to detect whether or not the process has been completed.

Furthermore, the elevating member 7 and the paper receiving section 35 of the dry type electrophotographic copying machine 34 capable of multi-step magnification/variable copying are connected by three pairs of connecting links 25, 26, and 27 that pivot freely relative to each other. connected by a means 24 and a pair of upper and lower flexible guide chute 28;
Four pairs of upper and lower transport rolls 29 are provided at the joint portion and end portion of the connecting means 24 so as to protrude inwardly from the guide chute 28 and come into contact with each other.
30, 31, and 32 are pivotally mounted, and the same conveyor roll 2
A paper feed motor 33 (see FIG. 7) is appropriately connected to the paper feed motors 9, 30, 31, and 32 by a belt (not shown), etc.
9, 30, 31, and 32 are rotated all at once, and the copy paper 1 taken out by the paper feed roll 18 is transferred to the copy machine 3.
The paper is fed to the paper receiving section 35 of No. 4.

Moreover, in the elevating member 7, a limit switch LS is disposed above and adjacent to the base protrusion 23 that is integrated with the swing lever 16. When the limit switch LS is turned on and off, the paper feed roll 18 is moved into the paper tray 2. It is designed to detect whether or not it is in contact with the copy paper 1.

In addition, two pairs of swing rods 36 are oriented vertically on both left and right sides at the rear of the paper tray 2 (on the left side in FIG. 1) and are pivoted via bearings 37, corresponding to the installation height of the paper tray 2. Six pivoting levers 38 are integrally fixed to the pivoting rod 36 at 60° intervals in the radial direction, and a roll 39 is pivotally attached to the tip of the pivoting lever 38.

Furthermore, a bevel gear 4 is provided at the lower end of the rotating member 36.
0 is fitted, a tray drawer clutch _C2 is interposed on the other rotation shaft 42 of the step motor 13, and a bevel gear 41 meshes with the bevel gear 40.
is fitted onto the shaft end of the rotating shaft 42, and when the step motor 13 is rotated with the tray drawer clutch _C2 connected, the swing rod 36 is driven to swing. There is.

Furthermore, a cam 43 is provided on the rear surface of the paper tray 2 (on the left side in FIG. 1) and protrudes from the pivot lever 38, and the cam 43 has a cam surface 44 that faces rearward and slopes from both left and right sides toward the width center. is formed, and when the turning member 36 is turned and one of the turning levers 38 is directed in the paper feeding direction of the paper tray 2, the tip roll 39 of the turning lever 38 is turned.
The cam surface 44 is pushed out, and the paper tray 2 is pulled out forward.

Also, on the operation panel of the copying machine (not shown),
A paper feed ready indicator PD and a tray selection switch that allows you to select one of the six paper trays 2.
SE, a copy number setting switch group NE that can set the number of copies by specifying a number from 0 to 9, a copy start switch group ST, and other switch groups are provided.

Furthermore, a microcomputer 50 is installed in the copying machine 34.
The microcomputer 50 has an input interface 51, a ROM 52, and a ROM 5.
3, CPU 54, and output interface 55
It's getting more and more familiar.

Furthermore, the input interface 51 includes a tray selection switch SE and a group of copy number setting switches.
Signals from input means such as NE, copy start switch ST, reflective sheet feeding completion detector RS, limit switch LS, other switch groups, and various counters in the copying machine 34 are appropriately adjusted and input to the CPU 54. It's summery.

The ROM 52 also stores sequence programs necessary for normal copying operations, programs necessary for executing the flowcharts shown in FIGS. 8 through 12, and the like.

Furthermore, the input data, data obtained by the operation of the CPU 54 described later, and other data can be read and written into the RAM 53.

Furthermore, the CPU 54 executes programs and instructions stored in the ROM 52 in accordance with input signals from the input interface 51, and sends signals to the step motor 13, the paper feed motor 33, the conveying means lifting clutch C ₁ , Control signals are output to the tray drawer clutch C ₂ , the paper feed clutch C ₃ , the paper feed ready indicator PD, and each operating part of the copying machine 34 .

Since the illustrated embodiment is configured as described above, the tray selection switch is activated as shown in FIG.
When you press SEj (switch corresponding to the jth tray 2j counting from the top) and copy number setting switch SE, and input the selection of tray 2 to be pulled out and the number of copies to be made (step), the step of the program is the paper feed preparation subroutine. Enter (step).

In the paper feed preparation subroutine, as shown in FIG. 9, the steps of the program are to judge whether the previously selected tray 2i and the currently selected tray 2j are equal (step 〓〓), and if they are equal, Connect the tray drawer clutch _C2 (Step 〓〓) and proceed to Step 〓〓. Also, if they are not equal,
That is, if i≠j, the conveying means lifting clutch C ₁
(step), and in step calculate aj-ai and use it as the value of S.

Here, ai indicates the standby position of the elevating member 7 for the i-th paper tray (a position slightly higher than the highest paper level in the paper tray 2i) in terms of the number of steps of the step motor 13. The standby position a ₁ of the elevating member 7 for 2 ₁ is set as the reference position (a ₁ =0) (see FIG. 11).

Similarly, for aj, the standby position of the elevating member 7 with respect to the paper tray 2j is shown.

This standby position is also the position to which the elevating member 7 returns when a series of copying operations is completed.

Note that bj will also be explained here with reference to FIG.

At the position of the elevating member 7, there are position ranges (parts marked with 〓) in which paper can be fed, which correspond to each paper tray and are spaced apart from each other, but the lowest position of the position range is at position b. Again, it is expressed by the number of steps of the step motor 13 based on _a1 .

The above values for each paper tray a and b are stored in the ROM 52 of the computer 50.

In the paper feed preparation subroutine, the program calculates the value of S, and then proceeds to step, where it is determined whether S is positive or negative, and if it is positive, the step motor 13 is reversed to move the elevating member 7 to |
It is lowered by s| (step 〓〓), and if S is negative, it is raised by S by normal rotation of the step motor 13 (step 〓〓).

Here, the elevating member 7 is located at the standby position aj for the newly selected paper tray 2j.

Next, at step 〓〓, the conveyance means lifting clutch _C1 is shut off once, and at step 〓〓, the tray drawer clutch is closed.
Connect _C2 and enter the tray drawer subroutine (step 〓〓).

Before entering into the explanation of the tray drawer subroutine shown in FIG. 10, there are six pivot levers 38 fixed to the pivot rod 36 radially at angular intervals of 60 degrees.
Let me explain the positional relationship.

The top turning lever 38 ₁ is located at the height of the paper tray 2 ₁ and pushes out the paper tray 2 ₁ .
The next turning lever 38 ₂ from the top is located at the height of the paper tray 2 ₂ and rotates in the clockwise direction from the turning lever 38 ₁ (No.
(Clockwise direction in the figure; hereafter, clockwise direction is assumed to be clockwise direction when viewed from above, and counterclockwise direction is assumed to be counterclockwise direction)
The paper tray ₂₂ is pushed out at a position forming an angle of 60 degrees, and the rotating levers ₃₈₆ are similarly fixed to the rotating levers in order to push out the corresponding paper trays.

When none of the paper trays is pushed out and is in a predetermined storage position and the turning rod 36 is not driven, the paper tray is moved from the position where it was pushed out.
The turning rod 36 is in a standby position at a position rotated 30 degrees to the left.

For example, in FIG. 11, the cam 34 is located between the rotating levers ₃₈₆ and ₃₈₁ , so the rotating lever 36 has finished pushing out the paper tray ₂₆ and is rotated 30 degrees to the left and is on standby. It turns out.

The tray drawer subroutine will be explained based on FIG. 10, assuming that the previously selected paper tray is 2i and the newly selected paper tray 2j.

First, in step 〓〓, j-(i+0.5) is calculated and used as the value of p.

And if p is larger than 3 (step 〓),
Calculate p-6 and set it as the value of p again (Step〓〓), and if p is smaller than -3 (Step〓〓), calculate p+6 and set it as the value of p again (Step〓〓).

Now proceed to step 〓, determine whether p is positive or negative,
If it is positive, the turning rod 36 is rotated to the left by 60°×p,
If it is negative, it is rotated clockwise by 60° x |p|, and the tray drawer subroutine ends.

For example, the previously selected paper tray 2i is at the bottom (i=6), and the newly selected paper tray 2i
Following the flow of the tray drawer subroutine when j is the fourth row from the top (j = 4), we find that
Calculating the value of p with step 〓〓, p=4-(6+
0.5)=-2.5 and -3<p<3, so we pass steps 〓 and 〓〓 and proceed to step 〓, and since p>0, we proceed further to step 〓〓, and the turning rod 36
It can be rotated to the right by 150° (=60° x |-2.5|).

Therefore, the turning rod 36 is the lowest paper tray 2.
₆ is rotated 150 degrees clockwise from the standby state after use (the state shown in FIG. 11), and the swing lever ₃₈₄ collides with the cam of the paper tray ₂₄ , causing the same paper tray ₂₄ to be rotated 150 degrees clockwise.
can be made into an extruded state.

When the subroutine program is executed in this way, the turning lever 36 is rotated from the standby state to the position where the turning lever corresponding to the newly selected paper tray pushes the paper tray forward at the minimum rotation angle. do.

Next, when the paper feeding preparation subroutine is returned to with the predetermined paper tray 2j being pulled out forward, the tray pull-out clutch _C2 is cut off at step 〓〓, the conveying means elevating clutch _C1 is connected, and the step motor 13 is turned off. Due to the reverse rotation, only the elevating member 7 is lowered (step 〓〓).

Simultaneously with this driving of the step motor 13, the number m of steps of the step motor 13 begins to be counted at the step ⓓ.

Then, the paper feed roll 18 continues to descend by repeating the steps 〓〓〓〓〓 until it comes into contact with the copy paper 1 in the tray 2j.
Contact the copy paper 1 inside and press the limit switch LS.
When turned off, the value of m is entered in l (step), and the position correction subroutine is entered (step 〓〓).

However, the limit switch LS is not turned off and the number of steps m being counted at step 〓 is bj−
If the value is equal to or exceeds the value of aj (when the elevating member 7 has passed the paper feeding position and there is no copy paper 1 in the paper tray 2j), the step motor 13 is stopped at step 〓〓, and then the step motor 13 is stopped at step After being rotated forward by several meters, the elevating member 7 is returned to the standby position aj.

Then, at step 〓〓, the conveying means lifting clutch C ₁
is shut off, the tray drawer clutch _C2 is connected, and at step 〓〓, the turning lever 36 is rotated 30 degrees to the left to be in a standby state, and the paper tray 2j is returned to its original storage position, and the tray drawer clutch C2 is closed.
C ₂ is blocked (step 〓〓), the value of j is put into i (step 〓〓), and the program progress is stopped.
The user waits until preparations for replenishing the copy paper 1 to the paper tray 2j are made.

Next, when the program proceeds to the position correction subroutine, the elevating member 7 is moved as shown in FIG.
The number of steps n of the step motor 13 that is lowering the step motor 13 is counted again (Steps 〓〓).

This number of steps n is counted to further lower the elevating member 7 by a certain number of steps _n0 after the paper feed roll 18 contacts the copy paper 1 in the paper tray 2j and the limit switch LS is turned off. A sheet of paper with a thickness corresponding to n ₀ can be easily fed at the stop position of the elevating member 7.

Therefore, compare the number of steps n during counting with n ₀ (step 〓), and if n exceeds n ₀ ,
The value of n added to the value of l is again l
(step 〓〓), and the step motor 13
is stopped (step 〓〓), and the position correction subroutine ends.

Also, before n reaches n ₀ , the value of l+n changes to bj−
Compared with the value of aj (step〓), when the value is equal to or larger, the step motor 13 is stopped (step〓), and the elevating member 7 is lowered from aj.
The step motor 13 is again incremented and raised by n (step 〓〓).

Then, at step 〓〓, the conveying means lifting clutch C ₁
is shut off and tray drawer clutch C ₂ is connected.
At step 〓〓, the turning lever 36 is rotated 30 degrees to the left and placed in a standby state, and the paper tray 2j is returned to its original storage position.At step 〓〓, the tray drawer clutch _C2 is shut off, and then at step 〓〓 The value of j is entered into i, the program progress is stopped, and preparations are made for replenishing the copy paper 1 to the paper tray 2j.

When the position correction subroutine shown in FIG. 12 is completed, the paper feed preparation completion indicator PD is activated to display the paper feed preparation completion in the step of FIG. 8, and the copy start switch ST is turned on ( In step 1, it is determined whether the number of copies Z is 1 or not, and if it is 2 or more, the paper feed motor 33 is driven in step, and the paper feed clutch C3 is connected in step ₃ , and thus the paper feed roll is 18,
With the rotation of the transport rolls 29, 30, 31, 32, j
The copy paper 1 in the th paper tray 2j is conveyed to the dry electrophotographic copying machine 34.

After copying is done in step, the number of copies Z is subtracted by one (step), and if the limit switch LS remains off in step,
The steps of the program are returned to the step again, and the steps are repeated.

During this time, when the number of copy sheets 1 in the paper tray 2j decreases and the paper feed roll 18 can no longer connect to the copy sheets 1 with the required contact force, the limit switch LS is turned on and the step motor 13 is reversely rotated to move the lifting member 7. After the is lowered, the program steps are the position correction subroutine (step)
Return to step via .

When the number of copies Z becomes 1 in step, the program advances to step.

On the other hand, if the number of copies z is 1 from the beginning, the program progresses from step to step, and after the paper feed motor 33 is operated, the paper feed clutch _C3 is connected in step, and the program step continues. You can move on to the next step.

Then, in step, when the copy paper 1 passes the paper feed roll 18 by the reflection type paper feed completion detector RS, the paper feed clutch _C3 is shut off in step, and after t time elapses, the copy paper 1 passes through the paper feed roll 18.
8, copy paper 1 is placed in the paper receiving section 35 of the copying machine 34.
After the paper has been completely conveyed to the next step, the paper feed motor 33 is stopped in step, and the final copy is made in step.

After the copying is completed, the elevating member 7 returns to the standby position aj raised by l in step, and then the conveying means elevating clutch _C1 is shut off and the tray drawer clutch is closed.
_C2 is connected (step), the turning lever 36 is rotated 30 degrees to the left (step 〓〓), and the paper tray 2j is returned to its original storage position.

Then, the tray drawer clutch _C2 is disconnected (step), and the value of j is put into i at step 〓〓, and the progress of the program is stopped.

In this way, the required paper feeding and copying are accomplished.

In addition, when changing the type of copy paper 1 to be supplied, select and press the tray selection switch Sj as appropriate, and the elevating member 7 and paper feed roll 18 will move to the selected paper tray. 2j, the same paper tray 2j is pulled out forward, and the required copy paper 1 is supplied.

Furthermore, by appropriately changing the spacing between the paper trays 2 and the height of the shelf supports 4, and changing the number of steps a and b stored in the ROM 52 to appropriate values, a wide variety of types can be produced regardless of the size of the copying machine 34. It is possible to quickly and easily select and supply copy sheets 1 of different paper sizes and orientations. Furthermore, by rotating the turning rod 36, the desired paper tray 2j is
can be pushed forward or retracted,
There is no need to provide a motor for pulling in and pushing in each paper tray, and the structure is simple and costs are low. In addition, any paper tray can be pushed out within a rotation angle of 150° of the turning rod 36. Time efficient.

In the embodiment described above, the turning rod 36 rotates to push out the intermediate paper trays one by one until the desired paper tray is pushed out.
The swivel lever 38 is made to be able to move up and down together with the swivel lever 38, and after the previous copying operation is completed, it is raised in the standby position. The height of the turning lever 38 and the cam 40 are changed by raising the cam 40 to a certain height, and then the tray drawer subroutine (first
(see figure 0), turn the turning rod 3 of steps 〓, 〓.
If the rotation lever 38 and cam 43 are rotated the remaining 30 degrees, and then the rotation lever is lowered to match the height of the rotation lever 38 and the cam 43, only the required paper tray can be rotated the remaining 30 degrees. can be extruded.

Furthermore, in the embodiment described above, the shelf support member is tilted rearward so that a retreating force is always applied to the paper tray, but a spring may be used to pull the paper tray rearward.

Furthermore, the elevating member 7 was raised and lowered by rotating the screw rod 8, but the fluid can be freely inserted and retracted by supplying and discharging fluid to a multi-stage cylindrical body such as a cylindrical cam mechanism, a pantograph mechanism, or a telescope barrel. The elevating member 7 may be moved up and down by means such as a belt mechanism or the like.

Furthermore, instead of the copy paper 1, a manuscript may be processed as a sheet.

Effects of the Invention According to the present invention, by controlling the biasing means, the cam member, the turning member, and the lever means, only the required sheet storage means can be selectively pulled out or pushed in, and the required sheet storage means can be immediately pulled out or pushed in. Since sheets can be transported and fed from the sheet storage means of the present invention, the operability is excellent and the structure can be simplified.

[Brief explanation of drawings]

Fig. 1 is a side view illustrating an embodiment of a drawer device for sheet storage means according to the present invention, Fig. 2 is a perspective view of its main parts, Fig. 3 is a plan view thereof, and Fig. 4 is a paper tray. A side view of the main parts illustrating the state before pulling out the
FIG. 5 is a side view of the main part with the paper tray pulled out, FIG. 6 is a longitudinal side view of the main part, FIG. 7 is a block diagram of the control system of the embodiment, and FIG. 8 is a flowchart thereof. FIG. 9 is a flowchart of the paper feed preparation subroutine in the same flowchart.
0 is a flowchart of the tray drawer subroutine in the flowchart of FIG. 9, FIG. 11 is a schematic plan cross-sectional view of the main part to explain the rotation of the turning rod, and FIG. 12 is a diagram of FIGS. 8 and 9. Flowchart of the position correction subroutine in the flowchart of 1st
FIG. 3 is an explanatory diagram illustrating the operation of the elevating member of the embodiment. 1...Copy paper, 2...Paper tray, 3...Kaidroll, 4...Shelf support, 5...Shelf support member, 6
... Guide rail, 7 ... Lifting member, 8 ... Screw rod, 9 ... Bearing, 10, 11 ... Bevel gear, 1
2...Rotating shaft, 13...Step motor, 14...
... Bracket, 15 ... Pivot shaft, 16 ... Swing lever, 17 ... Paper feed roll shaft, 18 ... Paper feed roll, 19 ... Pulley, 20 ... Belt, 21 ...
Drive pulley, 22...Paper guide, 23...Base protrusion, 24...Connection means, 25, 26, 27...
Connecting link, 28...Guide chute, 29,3
0, 31, 32...Transportation roll, 33...Paper feed motor, 34...Dry type electrophotographic copying machine, 35...Paper receiving section, 36...Swivel rod, 37...Bearing, 38
...Swivel lever, 39...Roll, 40,41...
...bevel gear, 42...rotating shaft, 43...cam,
44...cam surface, 50...microcomputer, 51...input interface, 52...
ROM, 53...RAM, 54...CPU, 55...
…output interface, C ₁ …conveying means lifting clutch, C ₂ …tray drawer clutch, C ₃ …
Paper feed clutch, PD... Paper feed ready indicator, RS
... Reflective paper feed completion detector, LS ... Limit switch, SE ... Tray selection switch, NE ... Copy number setting switch group, ST ... Copy start switch.

Claims (1)

[Scope of Claims] 1. A plurality of support means 5 arranged at required intervals in the vertical direction, and a plurality of sheet storage means 2 each supported by the support means 5 so as to be movable back and forth.
and the uppermost sheet 1 in the sheet storage means 2.
A sheet feeding device comprising a conveyance means 18 for conveying the sheet to the paper discharge side in contact with the sheet storage means 2, comprising: urging means for constantly urging the sheet storage means 2 rearward; cam members 43 attached to the means 2 and tilted in the left-right direction; a rotating member 36 adjacent to the cam member 43 and driven to rotate about the vertical direction; lever means 38 projecting radially at appropriate angles to each other at positions where they can collide; a turning drive means for turning said turning member 36; and a turning drive means for turning said turning member 36; By driving and controlling the elevating means that moves up and down along the paper side, the turning drive means and the elevating means, and turning the turning member 36 at an appropriate angle.
Two lever means 38 act on the corresponding cam members 43 to pull out the required sheet storage means 2 and place the sheets 1 in the sheet storage means 2 on the conveying means 18.
A drawer device for a sheet storage means, characterized in that it is equipped with a control means 50 for controlling the contacting of the sheet storage means.