JPS6048849A - Sheet feeder - Google Patents

Abstract

PURPOSE:To feed a sheet both automatically and manually through the same transport path by providing a notch portion on a part of sheet feeding means, which is spaced from and positioned opposite to a sheet in a sheet storing portion and adapted to guide a manual feed sheet guided from a manual feed portion to a portion to be supplied. CONSTITUTION:A sheet feeder includes a manual feed portion 15 for feeding a manual feed sheet P' and sheet feeding means 38 for taking out and feeding a sheet P in a sheet storing portion 2. A sheet fed by the sheet feeding means 38 and a sheet fed by the manual feed portion 15 are sent to the same portion 50 to be supplied. In this case, a notch portion 38a spaced from and positioned opposite to a sheet in the sheet storing portion 2 and adapted to guide a sheet fed from the manual feed portion 15 to the portion 50 to be suppled is formed on a part of the sheet feeding means 38. In this arrangement, a sheet can be fed both automatically and manually through the same transport path.

Description

DETAILED DESCRIPTION OF THE INVENTION [Technical Field of the Invention] The present invention relates to a paper feeding device used, for example, in an electronic copying machine.

[Technical background of the invention and its problems]

Generally, an electronic copying machine has a paper feed cassette that stores paper in its main body, and the paper in the paper feed cassette is taken out one by one by the rotation of paper feed rollers, and then transferred to the photoreceptor drum via registration rollers. It is supplied automatically.

In addition, this electronic copying machine is equipped with a manual paper feed tray as well as a paper feed cassette, from which paper of a different size than the paper stored in the paper feed cassette can be manually fed. be.

However, in the past, the conveyance path for automatic paper feeding,
If a separate conveyance path is required for manual paper feed, or if the conveyance path for automatic paper feed and the conveyance path for manual paper feed are shared, the paper feed rollers of the paper feed cassette may be Manual paper cannot be conveyed unless the paper is released from the paper, and in either case, the structure is complicated and the cost is high.

[Purpose of the invention]

The present invention has been made in view of the above circumstances, and its purpose is to provide a paper feeding device that has a simple configuration and is capable of automatically or manually feeding paper using the same conveyance path. It is something.

[Summary of the invention]

In order to achieve the above object, the present invention forms a guide part in a part of the paper feeding means for taking out the paper in the paper storage part, makes this guide part face the paper in the paper storage part at a distance, and moves the guide part along the guide part. It guides manually fed paper to the feeding section.

[Embodiments of the invention]

Hereinafter, one embodiment of the present invention will be described with reference to the drawings. Figures 1 to 3 show the external appearance of an electronic copying machine to which the paper feeding device of the present invention is applied. A paper feed cassette 3 serves as a paper storage section, and a paper discharge tray 3 is mounted on the left side of the main body 1 of the copying machine. Further, on the top surface of the copying machine main body 1, there is provided a document table 4 that can freely move back and forth in the left-right direction (direction of arrow a), and on the front edge of the top surface of the copying machine main body 1, a display 5 and a numeric keypad 6 are provided. An operation panel 10 is provided with input keys 9 including exposure settings, an input key 7, a print key 8, and the like.

As shown in FIG. 2, the document table 4 has a structure including a document placing plate (glass plate) 12 on which a document 11 is placed, and a document cover 13 covering the upper surface of the document placing plate (glass plate) 12.

Further, the cassette cover 14 of the paper feed cassette 2 has a third
As shown in the figure, paper P! A manual paper feed stand 15 serves as a manual paper feed unit for manually feeding paper as needed. Note that 16 shown in FIG. 2 is a power switch.

Next, the internal mechanism of the electronic copying machine will be explained with reference to FIG. In the figure, reference numeral 20 denotes a drum-shaped photoreceptor disposed approximately in the center of the copying machine main body 1, and the photoreceptor 20 is driven in the direction of the arrow in synchronization with the document table 4 by a drive mechanism (not shown). First, a document image uniformly charged by a charger 21 and uniformly irradiated by an exposure lamp 22 is imaged onto a photoreceptor 20 by a focusing light transmitter (trade name: Self-Oak Lens Array) 23, and electrostatic charge is generated. It is designed to form a latent image. The formed electrostatic latent image is turned into a toner image by the developing device 24 and sent to the transfer charger 25 side.

A sheet P or P' that is automatically or manually fed is fed by a sheet feeding device 26, and a toner image previously formed on a photoreceptor 20 is transferred onto the sheet P or p/ by a transfer charger 25.

Furthermore, the toner image is peeled off from the photoconductor 20 by a peeling charge 27 caused by AC corona discharge, passes through a conveyance path 28, and is melted and fixed onto the paper p (p') by a fixing device 29, and can be freely attached and detached by a discharge roller 30. It is discharged to tray 3.

On the other hand, residual toner remaining on the photoreceptor 20 after transferring the toner image onto the paper p (p) is cleaned by a cleaning device 31, and the electric potential on the photoreceptor 2θ is partially lowered below the level by a static eliminating land 32. Make the next copy operation possible.

A fan 33 serves as a cooling device, and exhausts heat generated from the heat-generating exposure lamp 22 and the fixing device 29 inside the machine. Further, an exhaust fan 36 is also attached to the main motor 35 to cool down the heat generated by the power supply section 34 and the like.

Inside the copying machine main body 1, an upper frame and a lower frame (not shown) are pivotally supported at one end via a support shaft 37, and the other ends of both frames are configured to be opened at a desired angle, for example, 30°. ing. The upper frame includes a charger 21, a focusing light transmitter 23, an exposure thin f22, a developing device 24, a cleaning device 31, around the photoreceptor 2o.
Each device such as a static elimination lamp 32 is attached by appropriate means, and a fan 33 as a cooling device, a paper feed roller 38 of a paper feed device 26, and a document table 4 are also attached to the frame to constitute the upper unit IA. ing. The frame also includes a paper feed cassette 2, a transfer charge 25, a peeling charger 26, a conveying path 28, a forming guide plate 39, a fixing device 29, two discharge rows 30, a tray 3, and other mechanisms, a main motor 35, and a power source. The portion 34 and the like are attached by appropriate means to constitute the lower unit IB. After rotating and removing the front cover 1a of the copying machine main body 1, the paper p (
It is configured so that it can be opened and closed along p conveyance paths 28. Therefore, even if paper p becomes jammed on the conveyance path 28, it can be easily taken out.

In addition, 50.50 in FIG. 4 corrects the inclination of the leading edge of the paper P that is automatically fed from the paper cassette 2 or the paper P' that is manually fed, and also performs a toner image formation operation on the photoreceptor 20. This is a pair of registration rollers that feeds the paper P or P' toward the transfer charger 25 in synchronization with the timing, and 51 is a manual feed detection switch disposed just before the pair of registration rollers 50 and 5θ.

52 is a paper discharge switch, 53 is a total counter, 54 is a paper empty switch that detects when the paper P in the paper feed cassette 2 is empty, and 55 is a developing device 24.
56 is a toner hopper, 57 is a toner out detection switch, 58 is a toner concentration detector, and 59 is a hopper lid, which prevents the document table 4 from moving unless it is closed. It has become.

Further, 60 is a high voltage transformer, 61 is a static elimination brush, 62 is a handle formed for opening and closing the upper unit A, 63 is a reflector surrounding the back of the exposure lamp 22, and 64 is an auxiliary reflector.

A weight 65 is used to bring the cleaning blade 66 of the cleaning device into contact with the photoreceptor 20 at a constant pressure, and a solenoid (not shown) causes the blade to move towards and away from the photoreceptor 20.

Note that the reflector 63, the auxiliary reflector 64, and the convergent light transmission body 23 are assembled as one unit.

Further, the paper feed device 26 provided at the lower right side of the copying machine main body 1 has a paper feed cassette 2 and a paper ejection opening 71 provided with separation claws 70 and 70 on the upper surface side of the paper feed cassette 2. The configuration includes a manual paper feed tray 15 formed on a cassette cover 72 that remains and covers the paper feed tray 15, and a paper feed row 238 as a paper feed means for taking out and feeding paper P from the paper feed cassette 2.

The paper feed row 238.38 is formed in a half-moon shape as shown in FIGS. 4 and 5, and when the paper is not fed from the paper feed cassette 2, the flat surface portion 38I serves as a guide portion.
L138h is in a state along the manual paper feeding direction (the state shown in FIG. 4), is spaced apart from and facing the paper P in the paper feed cassette 2, and is a guide member that guides the top side of the manually fed paper P/. It is also used as.

As shown in FIG.
(2) Endless rubber bell) 103.

103 is fitted externally. Note that the bomb plates 103, 103 have a large number of grooves 104 formed in the portion corresponding to the arcuate portion to increase the coefficient of friction, and the sheet P' is formed in the portion corresponding to the flat portion. The structure is such that the groove 104 is not provided so that the groove 104 can be smoothly guided.

Further, as shown in FIGS. 5 to 8, the drive shaft 100 has a drive gear 1050 whose rotational force is transmitted via a spring clutch 106, and the drive gear 105 drives the registration roller 50 below. It is driven via a drive gear 107 and an intermediate gear 108 attached to the shaft 50'. Further, the rotational force of a drive gear 1070 attached to the drive shaft 50' of the lower registration roller 50 is transmitted to the drive shaft 50' via a spring clutch.

Also, a gear 1 is attached to the drive shaft 100 of the paper feed rollers 3B and 3B.
The sleeve 117 of the spring clutch 106 that transmits the driving force of 05 has a locking protrusion 118a that maintains an angular relationship of approximately θ=210° and is shifted in phase in the axial direction of the sleeve 117.

118b is provided protrudingly, and the paper feed roller solenoid 12
According to the rONJ and rOFFJ operations of 0, the paper feed roller 38 can be selectively engaged with and disengaged from the locking portion 121a of the locking lever 121, and the paper feed roller 38.degree. 38 can be rotated intermittently.

Also, the sleeve 12 of the spring clutch 109 transmits the driving force of the gear to the drive shaft 50/ of the registration roller 50.
2 is formed with a ratchet gear 123, which allows the locking portion 125a of the locking lever 125 to selectively engage and disengage as the registration roller solenoid 124 operates rONJIrOFFJ. It has a structure that allows it to rotate.

Note that the configuration of the spring clutch 109 is well known, and detailed explanation will be omitted.

To add some explanation about the spring latch 106,
In FIG. 5, a spring 106b is wound around the small diameter portion of the arms 106&. A sleeve 117 surrounds the wound spring 106b. One end of the spring 106b is three! 117 grooves 11
7a, and the other end is fixed to the arms 106a. Arbor 105a is secured to drive shaft 100 by fasteners such as pin 106C and ring 106d. The locking protrusions 118a and 11 of the sleeve 117
8b is not locked by the locking lever 121, the spring 106b is tightened by the rotational force of the driving gear 1050, and the driving force of the driving gear 105 is transmitted to the drive shaft 100.

Next, the control operation will be explained with reference to FIGS. 9 to 15. FIG. 9 is a graph diagram of the copying machine of this embodiment. 5 B', 150.

52.51, 54, 151.152 are various switches,
Microprocessor 15 via data selector 153
Various data are sent to 4 from these switches.

58 is a sensor that detects the density of toner in the developing device; 15;
0 is a switch 52 for detecting that the toner collection bag is full of toner collected by the cleaning device;
51 is a switch for checking whether the paper has been ejected out of the conveyance path;
．． A switch that detects insertion to the 50 position, 5
4 is a switch for detecting that the paper P in the cassette is gone; 151 is a switch for detecting the position of the document table; 1;
52 is a switch for setting the operation mode of the copying machine.

9 is an input key, a print switch to start the copying operation, a numeric keypad for setting the number of copies, a clear/stop key to correct manual input or stop the copying operation, and an exposure adjustment eye. It consists of lium. Entering oysters-9
Input data from the microprocessor 154 is inputted to the microprocessor 154 via the data selector 153. At the same time, a key manual scan signal is input from the microprocessor 154 to the input key 9.

A reset circuit 155 outputs a reset signal and a clock signal to the microprocessor 154.

Furthermore, from the microprocessor 154, driver 1
A signal for displaying necessary information on the display 5 is outputted via the display 56, and at the same time, a scan signal for dynamic lighting is outputted to the display 5.

On the other hand, from the microprocessor 154, the driver 157
Various control signals are transmitted to the heater control circuit 158 via the
Lamp control circuit 159, driver 160. High voltage power supply 16
1.163, document platen clutch 163, paper feed roller solenoid 120, registration roller solenoid 124, toner replenishment solenoid 164, cleaner blade solenoid ye
s and the counter 53.

The heater control circuit 158 controls the fixing heater 1 of the fixing device 29.
The power supply to 65 is controlled to maintain the temperature at a fixing temperature. Lamp control circuit 159 controls energization to exposure run 7622 . The driver 160 controls the on/off operation of the main motor 35 and the static elimination lamp 32. High voltage power supply 161
supplies necessary voltages to the transfer charger 25, peeling charger 27, and development bias circuit 166, respectively, according to the control signal. High voltage power supply 161 supplies high voltage to charger 21 . The document table clutch 163 selectively transmits the driving force for reciprocating the document table. The paper feed row 2 solenoid 120 and the registration roller solenoid 124 rotate or stop the paper feed row and the registration roller.
It operates or stops the spring clutch between the drive source and each row 2. Toner supply solenoid 164
is operated when the toner concentration detector 58 detects that the toner concentration is below a specified value, and replenishes toner from the toner cartridge R into the developing device.

A cleaner blade solenoid 65 (not shown) presses the cleaning blade against the photoreceptor and separates it from the photoreceptor. The counter 53 counts the number of copies. Further, the fan 33 cools the inside of the copying machine.

Note that a signal indicating the temperature of the fixing heater 165 from the heater control circuit 158 is sent to the microprocessor 154 via the data selector 153.

Further, 170 is a main power source, which is connected to a DC power source 171 etc. via a switch 16. In the professional line diagram of Figure 9, "→" indicates the flow of signals, "S" indicates the flow of AC voltage supply, "→" indicates the flow of DC voltage supply, and "S" indicates the flow of AC voltage supply. ” indicates the flow of high voltage supply.

10 to 13 are diagrams showing the configuration of the document table switch 151. FIG. There is a 10th mark on the bottom of the glass plate of the manuscript table.
As shown in the figure, five magnets are provided. This magnet is the document platen limit detection magnet 20.
0, Magnet 201 for detecting document table home position,
It consists of a paper start position detection magnet 202 and document platen start position detection magnets 203 and 204.

The magnets 201 to 20.7 are arranged in a straight line on the rear edge of the glass plate, and the magnets 200 and 204 are arranged in a straight line that is also shifted to the front side of this straight line (see Fig. 10). ).

These magnets 1-200 to 204 are detected by reed switches 205 and 206 shown in FIG. These reed switches 205 and 206 are the original platen switch 1.
51. FIG. 11 shows the document table in the home position.

This home position is always the 11th position after copying is completed.
This is the position shown in the figure. At the home position, magnet 201 is detected by reed switch 205.

In addition, in FIGS. 11 to 13, the position of each magnet is indicated by a "△" mark.

FIG. 12 shows that the document table is at the start position. Here, the two document platen start position detection magnets 203 and 204 are simultaneously connected to the reed switch 205 and
206. This ensures reliable detection of the start position. In this state, the exposure operation for the original is started, and when the original table 4 moves in the direction of the arrow, the magnet 202 is detected by the switch 205. This detection signal is sent to microprocessor 154 to activate registration roller solenoid 124. This rotates the registration rollers and feeds the paper to the transfer section.

When the document table 4 moves further and reaches the state shown in FIG. 13, the magnet 200 is detected by the switch 206, and the limit position of the document table 4 is checked. This results in
The document table 4 is moved in the direction of the arrow shown in FIG. 13 and returns to the state shown in FIG. 11.

In this way, switch 2os, 2oe (151 in Figure 9)
The position of the document table 4 is detected by the signal from the microprocessor 154, and the JJXfA table clutch 163 is selectively activated to cause the document table 4 to reciprocate or to stop at a predetermined position.

FIG. 14 shows the display 5. 210 is an element that displays the number of copies, 211 is an element that displays the wait state (indicates that copying is not possible), 112 is an element that displays the ready state (indicates that copying is possible), and 213 is an element that displays the number of copies. An element 214 indicates that the cleaned and collected toner is full; an element 215;
An element 216 indicates that the toner in the toner hopper has run out, and an element 216 indicates that a jam has occurred.

Note that the display element 210 normally displays the number of copies (displays the general fixed number of copies input using the numeric keypad and displays the subtraction of the number of copies each time one copy is completed), but can change the setting mode by operating the mode switch 152. It also displays the location of paper jams on the conveyance path.

The mode switch 152 can be operated to switch between normal mode and
Each mode of aging mode, check mode, and forced ready mode can be set.

The normal mode is a normal copy mode. When the aging mode is set, the element 210 displays % A Q //, and the same operations as the normal copying operation are repeated except for the paper feeding operation, thereby allowing the copying machine to age.

Aging mode is canceled by operating the clear stop key. When check mode is set, element 210
* CHIJ is displayed, various input data input via the data selector 153 are checked, and a display (using a light emitting diode (not shown)) according to the input state is performed, and the output state of the output port of the microprocessor 154 is displayed. Check. Check mode is canceled by operating the clear stop key. When the forced ready mode is set, ready is displayed before the fixing heater 165 reaches the fixable temperature. Control of each of these modes is performed by microprocessor 154 according to a program stored in a memory built into microprocessor 154.

Therefore, when the power switch 16 is operated, the power source 170
Power is supplied to each part from Then, first, the microprocessor 154 reads data from each switch via the data selector 153. Thereby, it is detected that there is no abnormality, and the operation according to the mode setting by the mode switch 152 is started.

Here, the normal mode will be explained with reference to the flowchart in FIG. If there is no abnormality, first, the element 211 of the display 5 is displayed, and a signal indicating the fixable temperature is inputted from the heater control circuit 158. When this signal is input via the data selector 153, the element 211
is turned off, and the element 212 is displayed.

Next, when the number of copies is input using the input key 9, the set number of copies is displayed on the element 210. When the copy switch is further operated, a copy operation is started.

First, the microprocessor 154 operates a cleaner blade solenoid (not shown) through the driver 157 to press the cleaning blade against the photoreceptor, and then operates the main motor 35 and the static elimination run f32 through the driver 160.
The photoreceptor is rotated by operating the high-voltage power supply 161.
The transfer charger 25 and the peeling charger 27 are operated.
Apply a voltage to each.

Next, data from the document table switch 151 is read through the data selector 153, and the microprocessor 154 checks whether the document table 4 is at the start position. When the document table 4 is not at the start position, the document table clutch 163 is operated to move the document table 4 back and return it to the start position. Next, the paper feed low solenoid 12
0 is operated to rotate the paper feed roller a predetermined amount, and the paper P is detected from the paper feed cassette, and the exposure light 27 and 22 are turned on.

Next, the document table 4 is moved forward to start exposure, and
High voltage power supply 161 is operated to apply voltage to charger 21 . The document table 4 continues to move forward, and the document table switch 16
By the signal from 3, the original platen 4 is set to Peno J? - When the starting position is detected, the microprocessor 1
54 operates the registration roller solenoid 124 via the driver 157 to rotate the registration roller 50 and send the paper P to the transfer section.

Next, when it is detected by the -fR signal from the document table switch 163 that the document table 4 is at the IJ limit position,
The microprocessor 154 controls the power supply 162 to stop the operation of the charger 21, operates the document table clutch 163 to move the document table 4 backward, and controls the lamp control circuit 159 to turn off the exposure lamp 22. .

Then, based on a signal from the document table switch 151, the microprocessor 154 detects that the document table 4 is at the home position. Furthermore, it is determined whether the number of copies is equal to the set number of copies, and if the set number of copies has not been completed, the above-mentioned operation is repeated.

When copying is completed, the document table 4 is stopped at the home position. Next, when the sheet passing signal from the manual feed switch 51 is input via the data selector 153, the microprocessor 154 turns on the high voltage power supply 16.
1 to stop the operation of the transfer charger 25.

Furthermore, when the paper ejection signal from the paper ejection switch 52 is input, the microprocessor 154 considers that paper ejection is complete, and
After controlling the high-voltage power supply 161 and the driver 160 to stop the operations of the peeling charger 27, the static elimination lamp 32, and the main motor 35, a cleaner syleton lens (not shown) is controlled to separate the blade from the drum and complete the copying operation.

Next, a supplementary explanation will be given regarding the operation of each part.

When the power switch 16 is turned on, a blade solenoid (not shown) of the cleaning device 31 is turned on, and the blade 66 moves to the drum 2.
After being pressed against θ, the main motor 35, static elimination run f32,
Both the transfer and peeling chargers 25 and 27 are turned on for about 7 seconds (3 rotations) to uniformly remove the potential of the photoreceptor 20 to a partial level. The heat roller temperature of the fixing mechanism 29 is 190°C
When it reaches this point, it is detected by a thermistor and a message indicating that copying is possible appears. When the print key 8 is pressed, the plaid solenoid (not shown) is turned on, the main motor 35 is turned on, and both the transfer and peeling chargers 25.27 are turned on. Approximately 0.5 seconds after the plaid solenoid is turned on, the document platen clutch 163 is activated and the home position is reached. Operate the document table 4 located at the center (center) to the start position. Here, if the document table 4 has not returned to the start position after 3 seconds have passed since the clutch solenoid was turned on (document table lock), the display 5 will indicate % Ez #.
An abnormality is notified by displaying the and 2-code.

When it is detected that the document table 4 has reached the start position, the document table solenoid turns OFF. L paper feed roller solenoid 120
is ONL, the paper feed row 238 rotates and starts feeding paper from the cassette.

The cassette paper feeding timing will be explained below.
0.50 and paper feed row 238 are stationary.

[2] After copying starts, the paper feed signal turns on the paper feed roller lenoid 120, and the paper feed roller 238 moves to approximately 210 degrees.
(No paper is fed at first 60') Rotationally feeds the paper P in the paper feed cassette 2 [Registration rollers so, io (stationary)]
(Attachment) Stop for a moment.

[3] The registration roller renoids 124ON1. Registration roller 50. ．． At the same time as 50 rotates, the paper feed row solenoid 12θ turns OFF and the L paper feed row 238 rotates until it returns to its normal position.

[4] The paper P is about 5 minutes in front of the registration roller pair 50.50
Approximately 100 m5 ec after passing through the manual feed switch 51 located at the end, the resist clutch sealant lens 124 is turned off and the resist roller pair 50.50 stops.

[5] During continuous paper feeding, if the paper P has not finished passing through the manual feed switch 51 in front of the registration roller pair 50. to rotate the paper feed roller 38, and then repeat the operations [1] to [5] above. Also, [5]
If the previous paper P remains, the paper is fed for 100 m5ee, and both register ends -238, 50, and 50 rotate at the same time, but the first 60' of the paper feed row 238 does not feed paper, so the paper is fed by the registration rollers. This is after stopping at 50.5θ. Looking at the margin, the paper P was fed as 300 m5ec.
The registration roller pair 5θ, 50 stops before reaching the registration roller pair 50.50. In addition, when operating normally during continuous paper feeding, the registration roller pair 5o, 5θ is surely stopped before the paper feeding signal is input. (The length of paper P that does not stop is longer than the usable length of paper P.)

These series of timing controls are performed according to a program stored in microprocessor 154 shown in FIG.

In the case of continuous copying, the manual feed detection switch 51 in the row of registration roller pairs 50.50 detects the length of the first sheet of paper, and if the length of the first sheet is smaller than A4 size, copying from the second sheet onwards is done by moving the original platen 4 to the A4 length. The forward movement is stopped after a minute and a so-called quick return is performed to increase the copying speed.

In the case of a one-gallon size document that is thicker than A4 size, the document table 4 is moved back by the document table limit switch.

On the other hand, in the case of manual copying, as shown in FIG.

38a is stopped in a state where the paper P in the paper feed cassette 2 is separated from the paper P and is opposed to the paper P.
313 flat surface 38a.

38a, and is sent to registration rollers 50.degree. 50, and the cylinder key 8 is used to start copying. At this time, the manual feed detection switch 5 installed in front of the registration roller pair 50. Rotate 2 pairs of registration rows 50.50. When the original platen 4 returns to the original platen start position, the paper feed roller solenoid is turned on, and after a delay of 0.04 seconds, the exposure ramp D22 is turned on.
After a further delay of 0.16 seconds, the document platen forward solenoid turns O.
Nl, the document table 4 moves forward and the exposure process to the photoreceptor 2o is started. After a further delay of 0.13 seconds, the charger 21
Turn on. When the document table 4 reaches the d-74-start SW, this signal turns off the paper feed roller solenoid 120.
F and return the paper feed roller 38 to the normal position, and at the same time turn on the registration roller solenoid 124 to synchronize the leading edge of the document and the leading edge of the paper, and at the same time, 2 pairs of registration rollers 50.5
The pair of registration rollers 50 and 50, which start the rotation of the next sheet p, stops at 0FFL a predetermined time after the trailing edge is detected by the manual paper feed switch 51.

When the document table 4 moves back, it is stopped at the central home position by the document table home switch. The paper P onto which the toner image has been transferred by the transfer charger 25 is fixed by the fixing mechanism 29, and the paper P is fixed by the ejection roller. The paper is ejected to the tray 3 by 0 and 30, but after turning off the paper ejection switch 52, it is approximately 1.15
After turning the main motor 35 for a second, QFF is turned on.

After the main motor 35 is turned off, the cleaning plate 66 is separated from the photoreceptor 20.

In this way, the paper P that is manually fed from the manual paper feed table 15 is
' to the flat surface 38B of the paper feed roller J8.38.
? In order to guide the paper along 8 a to the reso roller 50°50, the paper is fed from the paper feed cassette 2 and the manual paper feed tray 1.
It goes without saying that paper can be fed from the feed rollers 3B and 5 using the same conveyance path, and it is also possible to feed paper without taking the trouble of letting the paper feed rollers 3B and 3B escape from the conveyance path during manual paper feeding.

〔Effect of the invention〕

As explained above, the present invention includes a guide section formed in the supply means, the guide section facing away from the paper in the paper storage section, and the paper that is manually fed along the guide section guided to the registration means. Therefore, there is no need for separate conveyance systems for automatic paper feeding and manual paper feeding, and there is no need to miss the paper feeding means during manual paper feeding, making the structure simpler and easier to use. This has the effect of reducing costs.

[Brief explanation of drawings]

The drawings show a one-pointed embodiment of the present invention, and FIGS.
The figure is a perspective view of the electronic copying machine, Figure 4 is a schematic diagram showing the inside of the machine, Figures 5 to 8 show the power transmission system for the paper feed and registration rollers, and Figure 5 is an exploded view. A perspective view, FIG. 6 is a schematic front view, FIG. 7 is a schematic side view, and FIG. 8 is a schematic front view.
The figure is a schematic cross-sectional plan view, and FIG. 9 is a flowchart of the operation of the electronic copying machine. 2... Paper feeding means (paper feeding force cera)), P,, P'...
Paper, 3FJ, 3B... Paper feed means (paper feed row, 7)
, 311B, 38a...Guiding part (notch part), 15...
・Manual paper feeding section, 50.50... Feeding section (registration roller). Applicant's representative Patent attorney Takehiko Suzue Figure 10 Figure 12 Figure 13/lb zT4 212 Procedural amendment 1. Display of the case Japanese Patent Application No. 155751/1982 2, Name of the invention Paper feeding device 3, Person making the amendment Relationship to the case Patent applicant (307) Toshiba Corporation 4, Agent 7 Contents of the amendment (1) Specification “~” written on page 26, lines 2 to 3
124 is turned ON and ~rotates'' is corrected to ``When ~124 is turned on and the registration rollers so, so rotate.'' (2) Delete "Clutch" written on page 26, line 9 of the specification box. (3) Delete "Paper feed roller solenoid turns ON" written in lines 16 to 177 on page 28 of the specification. (4) Delete "At the same time as paper feed roller solenoid 120 returns" written in lines 3 to 5 on page 29 of the specification box. (5) Correct beam number 8 in the drawing as shown in the attached sheet.

Claims (1)

[Claims] It is equipped with a manual paper feed section for feeding manual paper, a paper storage section that stores the paper, and a paper feed means for taking out and feeding the paper in the paper storage section, and the paper fed by the paper feed means and the manual paper feed section. In a paper feeding device that sends manual paper fed by a paper feeding unit to the same supplied unit, a part of the paper feeding unit is provided with a part of the paper feeding unit that is spaced apart from and facing the paper in the paper storage unit and that is fed from the manual paper feeding unit. A paper feeding device characterized in that a notch is formed to guide manually fed paper to the feeding section.