JPS59121035A - Automatic photosensitive paper feed type diazo copying machine capable of repeated copying - Google Patents

Abstract

PURPOSE:To execute exactly separation of original paper or its subsequent repeated transfer irrespective of the size of the original paper by providing a catch member opening and closing control means which is capable of separating the original paper from photosensitive paper, and executing discharge or repeated transfer, by opening and closing timely a catch member of a separating drum. CONSTITUTION:When short-sized original paper is inserted continuously, a separating drum 30 makes one rotation, and before a catch member 26 returns to its original position, the tip of the following original paper 0 reaches the separating drum 30. Even if a switch S1 is turned off by passing of the short-sized original paper, a timer T1 operates, and an output of an NAND circuit A1 holds an H signal. Accordingly, when the timer T1 is being operated, an original insertion indicating lamp PL is turned off, therefore, during a display of an original paper insertion inhibited state, the following original paper 0 is not inserted, and when the insertion indicating lamp PL is turned on, the following original 0 is inserted, by which even in case of copying the short-sized original paper, the catch member 26 is returned to its original position already, therefore, the following original paper 0 is caught exactly.

Description

DETAILED DESCRIPTION OF THE INVENTION Technical Field The present invention relates to a diazo copying machine capable of repeat copying, and in particular, to a diazo copying machine capable of repeat copying, and in particular, a photosensitive paper is automatically fed as a manuscript paper is inserted or repeatedly transferred, and superimposed on the manuscript paper with the leading edge aligned. The present invention relates to a diazo copying machine capable of automatically feeding photosensitive paper and capable of repeat copying, in which both of the superimposed papers are sent to an exposure section.

PRIOR ART In the case of this type of copying machine, in order to enable repeat copying, the manuscript paper sent out from the exposure section in a superimposed state with the photosensitive paper must be forcibly separated from the photosensitive paper and transported repeatedly. . In order to ensure that the original paper is forcibly separated from the photosensitive paper and thereby repeatedly transferred, the original paper is forcibly moved along a specific path within a certain range by holding the leading edge of the original paper in your mouth. A so-called document paper catch separation method for separating paper from photosensitive paper is known, for example, from Japanese Patent Application Laid-Open No. 48-56433.

However, the catch member that holds the leading edge of the original paper in its mouth is located on the outer periphery of the printing cylinder that forms the exposure section, and the catching member rotates at the same time as the printing cylinder and does not catch the leading edge of the original paper fed into the exposure section. In addition, even after passing through the exposure section, the leading edge of the document is transferred around the printing cylinder to forcibly separate the document paper from the photosensitive paper heading from the exposure section to the photosensitive paper discharge path. For this reason, the leading end of the manuscript paper is held by the catch member even while it is exposed to light, and the copy image of the held part may be lost or the shadow of the catch member may be copied. Additionally, during printing, if a synchronization error occurs with the cylinder catch member, the original paper is transported with its leading edge being held by the catch member, being subject to positional restraint, whereas photosensitive paper is transported with positional restraint due to the catch member. Even if the edges of the manuscript paper and photosensitive paper are aligned for a month,
There is a high possibility that the leading edges of both papers will be misaligned during transport.

Also, since the cylinder has a very large diameter compared to conventional separation devices, during single copying, if manuscript paper smaller than the circumference of the cylinder is continuously inserted, the cylinder will rotate once. Before the catch member returns to its original position, the leading edge of the next document paper reaches the printing cylinder, causing a problem that the document paper and the photosensitive paper cannot be separated.

Purpose 0 Summary of the Invention The present invention has been made in view of the above-mentioned problems.The present invention has been made in view of the above-mentioned problems. a switch that detects the overlapping paper and a superimposed paper feed path that sends out the superimposed original paper and photosensitive paper from the exposure section.Secondly, a pair of differential rollers that advance the original paper of both superimposed papers before the photosensitive paper, and a pair of differential rollers. The leading edge of the leading manuscript paper is caught and rotated by a catch member on a part of the outer periphery, and the manuscript paper is separated from the photosensitive paper that is following and heading toward the photosensitive paper ejection path, and is moved to the original paper ejection path. The direction toward the branching part of the document paper repeat transport path is set to a separation drum that is transferred, and a time that is set slightly longer than the time required for the separation drum to rotate once and for the catch member to return to its original position, which is activated by turning on the switch. The indicator lamp control means turns off the indicator lamp for a predetermined period of time, and the catch member of the separating drum is opened and closed in a timely manner to separate the original paper from the photosensitive paper and discharge or repeat the separation of the separated original paper. By providing a catch member opening/closing control means that enables transfer,
Separation of the original paper from the photosensitive paper and subsequent repeated transport can be reliably achieved without forcibly transporting the original paper using a catch member in the exposure section of the original paper, and the separation drum uses the catch member to separate the original paper from the photosensitive paper. Due to the separation from the photosensitive paper and the repeated transport of the manuscript paper, compared to conventional separation devices, the printing machine described above has a larger diameter, similar to the cylinder, but regardless of the size of the manuscript paper, it can It is an object of the present invention to provide a diazo copying machine that can reliably accomplish the separation or subsequent repeat transfer.

To explain the embodiment shown in the drawings, in FIG. 1, reference numeral 1 denotes the main body of the copying machine, and a manuscript paper insertion instruction lamp P is lit on one side of the front part to indicate that manuscript paper can be inserted.
L and a table 2 for inserting document paper 0 are provided at the lower front. A raw paper loading path 3 that is continuous and substantially flush with the table 2 is formed within the copying machine main body 1. A manuscript paper carrying-in roller 4 is provided in the manuscript paper carrying-in path 3.
and a pressing plate 5 which is in pressure contact with the roller 4 are provided so that the manuscript paper O inserted from above the table 2 is received between them and pulled into the rear of the manuscript paper carrying path 3. A photosensor switch Sl for detecting the introduction of the original paper is provided after the roller 4 and press plate 5 arrangement portion of the original paper introduction path 3.

At the lower part of the original paper carrying path 3, an automatic photosensitive paper supply means 6 is provided which feeds out one sheet of photosensitive paper P each time it is activated. The photosensitive paper automatic supply means 6 includes the photo sensor switch,
When either S1 or the photo sensor switch S2 for detecting document paper repeat provided in the middle of the document paper repeat transport path 7 on the document paper carry-in path 3 performs a detection operation, the paper feed solenoid SI, 5 [Fig. 12] operates and starts a one-rotation cam (not shown), the paper feed roller 8 rotates once and feeds out one sheet of photosensitive paper P, and the photosensitive paper is automatically fed as the original paper O is inserted or repeated. do.

Behind the original paper carrying path 3, the original paper carrying path 3, the original paper repeat transport path 7, and the photosensitive paper supplying path 9 from the photosensitive paper automatic feeding means 6 are connected to each other. A superimposing conveyance path 0 is provided which receives the paper O and the supplied photosensitive paper P from the photosensitive paper automatic supply means 6 at the same time, superimposes them vertically, and conveys them. Superimposed conveyance path 10
In this case, when the switch Sl or S2 is detected, the one-rotation cam is operated, and the stopper 113 starts automatically feeding the photosensitive paper P, and at the same time the stopper 113 moves to the superimposed conveyance path 10.
A leading edge aligning member 11 that faces inside and temporarily blocks the progress of the original paper O and the photosensitive paper P and aligns their leading edges, and a pair of transport rollers 12 and 13 located in front of the leading edge aligning member 11. is provided.

In the pair of transport rollers 1.2 and 13, the lower roller 12 is the driving side, the lower roller 13 is the driven side, and the upper roller 13 is the driven side.
When the stopper 111 of the first member 11 is lowered in conjunction with the leading edge aligning member 11 and facing the inside of the overlapping conveyance path 10, it moves upward and separates from the drive-side lower roller 12, so that the original paper 0 and the photosensitive paper P are free. The ends are brought into contact with the stopper 111 in the same state, and the ends are aligned.
After the leading edges of both papers 0°P are aligned, the paper is moved upward by the one-rotation cam (not shown) to enable the advance of both papers O9P, and then moved downward and comes into pressure contact with the drive-side lower roller 12, and after the leading edges are aligned, Superimposed both papers 0. P is conveyed to the rear of the superimposed conveyance path 10.

At the rear of the superimposed conveyance path 10, an exposure means 14 is provided which receives the document paper 0 and the photosensitive paper P that are conveyed in a superimposed manner and exposes the image on the document paper 0 onto the photosensitive paper P. The exposure means 14 is rotatably held within the copying machine main body 1, and has an exposure lamp 15 disposed in the internal space. One drive roller 1 to press the area
7 and a conveyor belt 21 stretched by a plurality of guide rollers 18, 19, 20, and a superimposed conveyance path 10.
A receiving port 22a faces the rear part of the exposure section 2, which exposes the original paper 0 and the photosensitive paper P received through the receiving port 22a while conveying them in a superimposed state toward the sending port 22b.
2 is formed.

The stacked original paper O is delivered from the outlet 22b of the exposure section 22.
A differential roller pair 24.25 is disposed on the superimposed double paper feed path 23 for feeding out the photosensitive paper P, and a differential roller pair 24.25 causes the original paper O of the superimposed two papers o and p to precede the photosensitive paper P.
5, the leading edge of the original paper 0 is caught by a catch member 26 on a part of the outer periphery, and the photosensitive paper P is rotated, and the original paper O follows behind it and heads toward the photosensitive paper ejection path 27.
A separating drum 30 is separated from the original paper and transported toward the branching portion 29 of the original paper carrying path 28 and the original paper repeat transporting path 7.
are arranged in sequence. Reference numeral 53 denotes a document paper separating and transporting path for separating the document paper O from the photosensitive paper P.

The differential roller pair 24, 25 has the lower roller 24 on the driving side and the upper roller 25 on the driven side. A locking pawl 32 that stops the roller 25 is connected to a ratchet gear 31 by a one-rotation cam 33.
(Figure 2)
. The one-rotation cam 33 is usually locked as shown in FIG. 2 by a locking pawl 34 connected to the solenoid SL+, and is sent out from the holding L1 exposure section 22 with the locking pawl 32 removed from the ratchet gear 31. Kuru superimposition of both papers 0. When P reaches in front of the differential roller pair 24.25 and the photo sensor switch S3 (Fig. 1) for detecting the feeding of both stacked sheets is activated, the locking pawl 3 is activated by the solenoid SL+.
4, the engagement with the locking claw 32 is released, and the locking claw 32 rotates once.
is engaged with the ratchet pawl 3] so that the driven side upper roller 25 is temporarily stopped.

The driven-side upper roller 25 is positioned so as to be in contact with the photosensitive paper P of the two superimposed sheets O1P sent out from the exposure section 22, and prevents the photosensitive paper P from advancing during the pause period. On the other hand, the drive-side lower roller 24 continues to rotate and advance the document paper 0 with which the roller 24 comes into contact even while the upper roller 25 is stopped. This is the differential operation of both rollers 24, 25, and causes the original paper O to precede the photosensitive paper P.

The feed speed of the drive-side lower roller 24 is equal to the normal feed speed in the exposure section 22. Therefore, the original paper O is not stretched or slackened between the exposure section 22 and the differential roller pair 24.25, whereas the photosensitive paper P is During this time, it forms a loop shape as shown by the imaginary line in Figure 1. For this reason, the exposure section 22 of the superimposed paper feed path 23 and the differential roller pair 24.25
The structure between the photosensitive paper P and the photosensitive paper P must be such that it can tolerate the formation of loops due to temporary sagging of the photosensitive paper P. In the case shown in the figure, the upper guide 35 is movable and the photosensitive paper P forms a loop while pushing the upper guide 35 one step; however, a single-sided guide structure may be used in which the double-sided guide 35 is omitted.

The separation drum 30 holds the catch member 26 inside the shaft 3.
6, the catch claw 26a of the catch member 26
protrudes toward the outer periphery of the drum 30 from a plurality of windows 37 that are opened in the axial direction on a part of the outer periphery of the drum 30 (Fig. 3).
. Further, the separation drum 30 has a stopper pin 38 for regulating the start position and an auxiliary stopper pin 39 used for long copying, protruding from two places on the same circle on the negative side.
By engaging the stopper pin 38 with the locking lever 40, the catch claw 26a is locked at the starting position where it waits as shown by the imaginary line in FIG. (Figure 4).

The locking lever 40 is controlled to engage and disengage from the stopper pins 38 and 39 by a one-turn cam 41, and the one-turn cam 41 is always controlled by the locking lever 42 connected and connected to the solenoid SL2. The locking lever 40 is held in the engagement position with the stopper pin 38. The solenoid S L 2 is a photosensor switch S4 for detecting the document paper catching timing, which is provided at the standby position of the catch pawl 26a on the superimposed double paper feed path 23, and is moved in advance through the differential roller pair 24°25 to the standby position. A certain gear
It is actuated by an operation that detects the leading edge of the document paper 0 that has reached a position where it enters between the notch claw 26a and the outer periphery of the separation pad 30, and the locking lever 42 is removed from the one-turn cam 41. is activated. The one-rotation cam 41 moves the locking lever 40 to the disengagement position 13- with the stopper pin 38 for a certain period of time during one rotation, and releases the locking lever 40 from the separation drum 30 to the standby position. 30 to be able to start.

The separation drum 30 has a drive gear 44.4 on the same shaft 43.
Driven gears 46 and 47 that mesh with the separation drum 30 are provided to be selectively connected when the clutch CL is on or off.
When the locking lever 40 is disengaged from the stopper pin 38, the separation drum 30 is driven at the same normal circumferential speed as the feeding speed in the exposure section 22. On the other hand, when the clutch CL is activated, the gear 46 becomes free with respect to the separation drum 30.
A gear 47 is connected to the separation drum 30 and the separation drum 30
is rotated at high speed (Figure 4).

The catch member 26 is closed 14 so that the catch pawl 26a is pressed against the outer periphery of the separation drum 30 by a spring 49 acting on a lever 48 fixed to the end of the shaft 36 that pivotally supports the catch member 26, which protrudes toward the side surface of the separation drum 30. − are biased to be in the same state; The lever 48 has a driven pin 50 at one end thereof, and is moved only when the separation drum 3o is locked at the initial position around the outside of the locus in which the driven pin 5o is revolved by the rotation of the L1 separation drum 3°. An initial position catch release member 51 and a shaft 52 are fixed to push the driven pin 5o against the spring 49 and keep the catch member 26 in an open state in which the catch claw 26a is separated from the outer peripheral surface of the separation drum 30. a movable catch release member 54 which is pivoted by and faces within the revolution locus of the driven pin 5° in the first half of the document paper separation and transfer path 53, opens the catch member 26, and retreats to a non-operating position outside the revolution locus; The passive pin 50 is located in the rear half of the original paper separation and transfer path 53.
A document paper separation and transfer end T position catch release member 55 is provided, which is fixedly installed so that the catch member 26 is in an open state while facing the revolution locus of the original paper (see FIGS. 2, 5 to 9). ).

The shaft 52 is provided with a post-separation document path switch whose tip approaches and separates from a position where the tip avoids the catch pawl 26a on the outer periphery of the separation drum 30, just before the branch 29 between the document paper ejection path 28 and the document paper repeat transport path 7. A guide 56 is also fixedly installed and is operated integrally with the movable catch release member 54. The document paper path switching guide 56 and the movable catch release member 54 are operated by a one-rotation cam 58 to which a cam follower 57 on the movable catch release member 54 is in pressure contact.
is locked by a locking lever 59 connected to the document paper path switching guide 56 to move the document paper path switching guide 56 to the document paper ejection side indicated by the solid line in FIG. (Fig. 2, Fig. 5 to Fig. 9).

The solenoid SL3 is connected to a photosensor switch S5 for detecting separated photosensitive paper, which is provided in the photosensitive paper ejection path 27 and the original paper separation and transport path 53, so that the original paper O and the photosensitive paper P are properly separated. The photosensor switch S6 (FIG. 1) is turned on only when activated in sequence, releases the locking lever 59 of the single-rotation cam 58, and starts the single-rotation cam 58. At some point during one rotation, the one-rotation cam 58 rotates when the cam follower 5
Release the push against 7 and move the original paper path switching guide 56.
to the original paper repeat transfer side as shown by the imaginary line in FIG.
6a and the outer periphery of the separation drum 30, the manuscript paper O is transferred to the manuscript paper repeat transport path 7 while the leading edge of the manuscript paper O is caught between the outer periphery of the separation drum 30
I'm trying to draw them in.

Note that a discharged photosensitive paper receiving guide 61 is provided at a branching portion 60 of the photosensitive paper discharge path 27 and the original paper separation and transfer path 53. (Figure 1). This guide 61 has a cam follower 63 that comes into pressure contact with a cam 62 that rotates together with the separation drum 30, and during one rotation of the separation drum 30, the catch claw 2
6a is moved from the state shown by the imaginary line in FIG. 1 to the photosensitive paper receiving state shown by the solid line for a certain period after passing the branching part 60, and the leading edge of the original paper 0 is brought into pressure contact with the upper surface of the preceding original paper 0. The trailing photosensitive paper P superimposed on the OJ- is scooped up and received into the photosensitive paper discharge path 27 (FIGS. 10 and 11).

A magnet 64 is attached to the side of the separation drum 30, and a reed switch is activated depending on the rotational position of the separation drum 30.
S7. S8 is now working.

Switches S7 and Ss are fixedly installed on the copying machine main body 1 side, and when switch S7 is activated by the approach of magnet 64, clutch CT- is activated to connect gear 47 to separation drum 30 instead of gear 46. Separation drum 3
0 at a higher speed than the original paper O which remains at normal speed,
At the same time as the high-speed rotation, the catch member 26 is opened by the document paper transfer end position catch release member 55, and the document paper O is removed from the separation drum 30 and is ready for multi-copying by repeat transfer. I'm trying to make it happen.

In order to maintain the original paper O at a normal speed even during high-speed rotation of the separation drum 30, a catch claw 26a on the outer periphery of the separation drum 30 is provided.
Collar 65 (
3) and those collars 65, in front of the branching part 60 on the superimposed paper feed path 23, and in the original paper separation transport path 5.
The drive roller 66 and conveyance rollers 67 and 68, which are in contact with each other at positions before the branching part 29 on the document paper repeat transport path 7 and immediately after the branching part 29 on the document paper repeat transport path 7, are configured to pinch and convey the paper. In Figure), the repeatedly transported original paper O is sent to the superimposed transport path 10 by the collar 65 and the transport roller 68, and is used for multi-copying.

When the separation drum 30 further rotates and another reed switch Sa is activated by the approach of the magnet 64, a long copy detection sensor installed parallel to the photo sensor switch Sa for long copying is activated. If the photo sensor switch Se (Fig. 1) is still on while detecting the photosensitive paper P, the separation drum 30 is temporarily stopped by the engagement of the stopper pin 39 and the locking lever 40 and returned to the initial position. The color 65 and each roller 66.
If the switch S9 does not detect or no longer detects document sheet 0 depending on whether the document sheet 0 is further conveyed by 67 or 68, the solenoid S L2 is operated to return the separation drum 30 to the initial position. be.

A KIi developing means 69 is disposed at the end of the original paper ejection path 27, and is designed to develop the photosensitive paper P that is separated from the original paper O and is ejected, and eject it to a photosensitive paper ejection tray 70 outside the machine. (Figure 1). In the middle of the photosensitive paper ejection path 27,
An abnormality paper ejection path 71 when the original paper O and the photosensitive paper P are not separated is formed into a branch, and a development switching guide 73 force ζ is provided at the branch portion 72. This guide 73 is
Normally, it is in the state shown by the solid line in Figure 1, and only when the original paper 0 and the photosensitive paper P are properly separated and the switches Ss and Sa are sequentially detected, the solenoid 5T-4 (Figure 4) is activated. While the photosensitive paper P conveyed through the photosensitive paper ejection path 27 in the state shown by the imaginary line in FIG. 27 or the document paper separation and transfer path 53 and only one of the switches Ss and S6 is activated for detection, the solenoid S L 4 does not work and the guide 73 remains in the position shown by the solid line in FIG. Even if the overlapping paper O1P enters the paper ejection path 27, it is guided to the abnormality paper ejection path 71 and ejected outside the machine without passing through the developing means 69, and one original paper O passes through the developing means 9 and is contaminated with developer. I'm trying to make sure it doesn't happen.

Furthermore, the movable catch release member 54 and the separated original paper path switching guide 56 are operated by the solenoid S L3 during single-sheet copying and final copying in multi-copying.
remains off and the one-rotation cam 58 is not rotated, so that the initial state shown by the solid line in FIG. 1 and FIG. The leading end catch of the original paper 0 that has been separated and transferred from the photosensitive paper P is released, and the guide 56 scoops up the separated original paper 0 with the catch released while the leading end is pressed against the outer periphery of the separation drum 30. When the separated document paper 0 is ejected to the document paper ejection tray 74 outside the machine and the switch S6 is on, the clutch CL is engaged and the separation drum 30 is rotated. becomes high speed, and the document paper leading edge catch claw 26a is removed. In addition, even during multi-copying, when the original paper O and the photosensitive paper P are not separated and only one of the switches Ss and S6 is detected, the movable catch release member 54 and the original paper path switching guide 56 after separation are detected. is left in its initial state, and both superimposed sheets 0. Even if P enters k, it is simply shuffled and ejected from the original paper ejection path 28 to the outside of the machine in the same manner as the original paper ejection described above.

If the original paper O and the photosensitive paper P are ejected outside the machine as described above without being separated and overlapped, the exposed photosensitive paper P is
It is inserted through a manual feed path 75 from outside the machine provided at the second part of the development switching guide 73 of the photosensitive paper ejection path 27 and can be subjected to development, so that the exposed photosensitive paper P is connected to the original paper O. Nothing is wasted due to non-automatic separation.

76 is a drive motor, 77.78 is an L belt that transmits driving force from the drive motor 76 to various parts, and 79 is a chain 7.
8 shows a driving force transmission chain or belt.

FIG. 12 shows an embodiment of an electric circuit that controls a series of operations in the copying machine, and the original sheet insertion instruction lamp PL is activated while switch S+ or switch S2 is on, or while switch S+ or switch S2 is on. While the timer T1 is operating by turning on the switch S2 temporarily for copying the last sheet of multi-copying, the light is turned off to display a state in which original paper insertion is prohibited.

Here, the inside of the timer TI has a circuit configuration as shown in FIG.
Therefore, the capacitor C1 connected to the SS terminal is not charged by the transistor Tr, and as a result, the 0TJT' terminal holds ((LII. Then, the input is inverted by inverter B, and the 9 outputs of the flip-flop circuit FF become 1li (//, and the transistor Tr is turned off, so that capacitor C1 connected to the SS terminal begins to be charged. Comparator COM
When the voltage at the SS terminal becomes higher than the voltage at the terminal 10, the output signal from the OUT terminal of the comparator COM becomes
-I', the flip-flop circuit FF is reset, and the Q output is inverted to "L", resulting in an initial state. Also, after the ゝゝI,〃 signal is input to the TR terminal and the OUT terminal is inverted to 1\■-1〃, the SS terminal is set to ゝゝL〃, thereby maintaining the ゝゝHtt state of the OUT terminal. From this state, the timer operation can be started by setting the SS terminal to 11].

The setting time of the timer T1 is determined by the variable resistor VR2 and the capacitor C1, which are interlocked with the speed adjusting variable resistor VR+ of the motor speed control circuit 80, so that the separation drum 30 always rotates once in response to a change in the copying speed. 26
The time is set slightly longer than the time required for the camera to return to its original position.

This electric circuit will be explained below along with a series of operations of the copying machine.

When copying, first operate the speed adjustment knob (not shown) from outside the machine and set the variable resistor VR to the condition that no original paper is burned.
+ Adjust. As a result, the drive motor 76 is controlled to a rotation speed that meets the seizure conditions, and the timer T
, are also set by the resistance value of the variable resistor VR2, which is controlled in conjunction with the variable resistor VR+, and the capacitor CI.

<In case of single copy> When original paper O is inserted, switch Sl detects the leading edge of original paper 0, turns on, and remains on while original paper 0 passes. By turning on switch Sl, ss is connected to NAND circuit A+.
(-tt times signal is input, and timer T1's T
The SS (-/J times signal is input to the R terminal, and the timer T
1 operates for a set time by variable resistor VR2 and capacitor C1. While this timer T1 is operating, timer T
The output signal from the OUT terminal of No. 1 is inverted from "l, II" to "IT", and the "L" signal is input to the NAND circuit AI via the inverter B1. When a 1N signal is input to this NAND circuit A1, its output is 1.
(/l signal is generated, the original paper insertion 25- instruction lamp PL goes out, and the original paper insertion prohibited f) status is displayed. This display is performed while the switch Sl is on or while the timer T1 is operating.

Okay, switch Sl's on signal is 74 of timer T2.
The timer T2 is activated for the time set by the resistor R3 and the capacitor C2, and during that time, the paper feed solenoid SI, 5 operates a one-rotation cam (not shown), thereby opening the paper feed slot 8. is rotated once, and the photosensitive paper P
Automatically feeds one sheet. Note that the internal circuit of the timer T2 also has the configuration shown in FIG. 13, so its explanation will be omitted.

The inserted original paper O and the automatically supplied photosensitive paper P are sent to a superimposing conveyance path 10, are overlapped with their leading edges aligned by a leading edge aligning member 1, and are fed to an exposure section 22.

Both superimposed sheets passing through the exposure section 22 0. P is sent out to the superimposed double paper feed path 23, and when the switch SS detects it and turns on, the solenoid SL+ is operated for a set time by the resistor 7 and the capacitor C4, and the differential roller pair is activated by the one-rotation cam 33. The driven upper roller 25 of 24°25 is temporarily stopped, and the original paper 0 is placed in front of the photosensitive paper P. Next, the switch S4 opens the catch pawl 26 of the catch member 26 in the open state.
When the leading edge of the original paper 0 that has entered between a and the outer periphery of the separation drum 30 is detected and turned on, the resistor R+s and the capacitor
The set time solenoid S L2 by CB operates, and the one-separation drum 30 is released from the lock by the locking lever 42 and begins to rotate in the direction of the arrow from the initial position shown in FIG. When the pin 50 is removed from the initial position catch release member 51 as shown in FIG. 6, it is brought into a closed state, and the leading edge of the original paper O is caught between the catch claw 26a and the outer peripheral surface of the separation drum 30.

As a result, while the manuscript paper O is forcibly transferred to the manuscript paper separation and transfer path 53 with its leading edge caught,
For the trailing photosensitive paper P, the gear/sochi member 26 is at the branch point 60.
Immediately after passing the photosensitive paper receiving guide 6, the tip of which is pressed against the outer periphery of the separation drum 30 by the cam 62 as shown in FIG.
1, it is scooped up from the preceding original paper OJ- and advances to the photosensitive paper discharge path 27. Therefore, the manuscript paper O is
As the document paper advances along the paper separation and transfer path 53 toward the branching section 29, it is gradually separated from the photosensitive paper P that advances toward the photosensitive paper discharge path 27.

When this separation is ensured, switch S5 first detects the leading edge of photosensitive paper P and turns on, and then switch S6 is turned on.
detects the leading edge of the original paper O and turns on.

At this time, the Q output of the flip-flop circuit FF+ is inverted by the ON signal of the switch S5. Next, when the switch 6 is turned on, the output of the Nant gate A3 is reversed, but since the relay contact RY+-aa is off, the solenoid SL+ does not operate, so the movable catch release member 54
After separation, the document paper path switching guide 56 does not operate and remains in the initial state shown in FIG. 7B. Therefore, the manuscript paper O is
The catch member 26 is opened by the movable catch release member 54 before the branching part 29, and the original paper O is released from the catch, and the separating drum 30 is released by the guide 56 at the branching part 29.
The paper is scooped up from the circumferential surface of the paper, guided to the document paper discharge path 28, and discharged to the discharge tray 74 outside the machine.

Further, when the switch S6 following the switch S5 is turned on, the solenoid SL4 is also activated, and the developer switching guide 673 is switched to the state shown by the imaginary line in FIGS. 1 and 4. The photosensitive paper P is sent to the developing means 69, subjected to development, and then discharged to the outside of the machine.

Meanwhile, the separation drum 30 continues to rotate, and at the position shown in FIG. 8, the switch S7 is turned on by the approach of the magnet 64, the Qri force of the flip-flop circuit FF2 is reversed, and the clutch CL is turned on. As a result, separation drum 3
0 is high speed rotation, and in the position shown in Figure 9, switch S8
is turned on by the approach of the magnet 64, the flip-flop circuit FF2 is reset, and the clutch CL is turned off, thereby canceling its high-speed rotation state. At this time, the long manuscript paper with the photosensitive paper P remaining in the switch 59 section (
When copying original paper (longer than the length of one rotation of the gear/back member 26), the switch S9 is on, so the solenoid SL2 does not operate and the stopper bin 39
is engaged with the locking lever 40, and the separating drum 30 is temporarily stopped until the photosensitive paper P passes the switch 59. On the other hand, in the case of copying short manuscript paper (original paper shorter than the length of movement of the catch member 26 in one rotation), the switch S9 is in the OFF state, so the solenoid SL2 is operated for the time set by the resistor RI8 and the capacitor C8, and the separating drum 30 returns to the initial position shown in FIG. 5 without stopping, and at this position, the stopper pin 38 engages with the locking lever 40 as shown in FIG. 4, and the separating drum 30 stops.

The above describes the copying operation of a single copy, but when making a single copy of multiple sheets of manuscript paper, after inserting the first manuscript paper 0, the second and subsequent manuscript sheets It is desirable to insert O continuously for quick copying, but if short document sheets are inserted continuously, the next The leading edge of the original paper 0 will reach the separating drum 30, and the original paper O will no longer be rotated through the gears.
Even if Sl is turned off, the timer T1 is operating and the output of the NAND circuit A1 maintains the TT times signal. Therefore, while the timer T1 is operating, the original insertion instruction lamp P■- goes out, and while the original paper insertion prohibited state is displayed due to kneading, the next original paper O is not inserted and the insertion instruction lamp Pt lights up. By inserting the next original paper O, even when copying a short original paper, the catch member 26 returns to its original position first, so that the next original paper O is reliably caught.

<In case of multi-copy> Multi-copy switch S+o is turned on by setting a sheet number counter (not shown) to an arbitrary number of sheets of 2 or more. If you insert the original paper O in this state, the switch
S+ detects the leading edge of original paper O and turns on upper 1 na 21 circuit
When the "L" signal is input to A1, the timer T,
The ゝゝL〃 signal is input to the TR terminal of the timer T1, and the output signal from the OUT terminal of the timer T1 is inverted to ゝゝ11//, and is passed through the NAND circuit A+K XVL through the inverter B1.
/l signal is input.

As a result, the output signal of the NAND circuit A1 becomes ``Htt'', and the original sheet insertion instruction lamp PL goes out. At the same time,
Multi-copy switch S+o on signal and timer T
1) The output of A2 activates the relay RY+, and the SS of the timer TI is turned on by turning on the contact RY+a+ of the IJ relay RYI.
The terminal becomes ゝゝL〃, and the OIJ T terminal becomes ゝゝ1-(t
The state of t is maintained during the operation of relay RYI, that is, during multi-copying. Note that when relay RY+ operates, relay contacts RYl-a 2 and RYI-aa are also turned on.

As a result, during multi-copying, the original paper insertion instruction lamp P
t is turned off, indicating that insertion of original paper is prohibited.

After the original paper 0 is inserted, the operation of the original paper O and the photosensitive paper P is as described above in the single frame until the original paper passes through the original paper separation and transport path 53 and the switch S6 detects the leading edge of the original paper O and turns on. Since this is the same as P, the explanation will be omitted.

When the Q output of the flip-flop circuit FF+ is inverted by the on signal of the switch S5 from the tip of the photosensitive paper P, the relay contact RY+-as is in the on state, so this output inversion signal and the on signal of the switch S6 cause a NAND game) A3 At the output of , solenoid Sl3 is operated for a set time by resistor R11 and capacitor C5. As a result, the cam 58 operates one rotation to bring the movable catch member 54 and the separated document paper path switching guide 56 into the state shown in FIG. 29 to the original paper repeat transport path 7.

When the separation drum 30 continues to rotate and the switch S7 is turned on by the approach of the magnet 64, the Q output of the flip-flop circuit FF2 is reversed and the clutch CI is turned on. As a result, the separation drum 3° begins to rotate at a high speed, and at the same time, the catch member 26 is brought into an open state by pushing its driven pin 50 to the original paper repeat transfer end T position by the catch release member 55 as shown in FIG. During the repeated transport at normal speed by the collar 65 and each roller 66, 67, 68, the catch member 26 moves away from the leading edge of the original paper O according to the separation drum 30 rotating at high speed, thereby separating the original paper O. The tip of 0 is completely removed from the catch claw 26a of the catch member 26.

When the switch S2 in the document paper repeat transfer path 7 detects the leading edge of the document paper 0 that has been repeatedly transferred and turns on, the on signal is given to the TR terminal of the timer T2, and the set time solenoid is activated by the resistor R3 and the capacitor C2. SI,5 is activated, and one sheet of photosensitive paper P is automatically fed as in the case of inserting the original paper. On the other hand, switch S
The set number of sheets on the sheet number setting counter is set to 1 by the ON signal of 2.
Subtracted.

The manuscript paper O that is repeatedly transported is scooped from the circumferential surface of the separation drum 30 by a scraper 80 whose tip is pressed against the outer circumference of the separation drum 30 at the final position of the paper repeat transport path 7, and is then conveyed in a superimposed manner. The photosensitive paper P is fed into the photosensitive paper path 10 and conveyed to the tip portion 22 of the photosensitive paper 34 with the leading edges aligned as described above.

After the separation drum 30 starts rotating at a high speed, when the switch S8 is turned on by the approach of the magnet 64, the flip-flop circuit FF2 is reset, its Q output is reversed, and the clutch CI- is turned off, causing the separation drum 30 to rotate at a high speed. The condition will be removed. Also, on the condition that no photosensitive paper P remains in switch 59 and switch S9 is off, solenoid SL2 is operated for a set time by resistor R1B and capacitor C8, and separation drum 3
0 is released from the temporary stop state caused by the engagement of the locking lever 40 and the stopper bin 39 for long copying, returns to the initial position shown in FIG. 5, and repeats the above operations to perform multi-copying. can continue.

When copying the last copy of multi-copy, switch S2
When detects the leading edge of original paper O and turns on, timer TI
When the signal is input to the TR terminal K"L, the number of copies set on the number of copies setting counter returns to the initial setting number, the multi-copy switch S+o is turned off, and the relay RY is turned off, so it is connected to the SS terminal of the timer T1. Capacitor C1 starts charging, and timer T1 operates for the time set by variable resistor VR2 and capacitor CIK.

That is, in the final copy of multi-copy, after switch S2 is turned on, the copying operation is exactly the same as when switch S1 is turned on during single copy.As a result, even in multi-copy, the next original paper 0 is copied. When performing multi-copying, if the original paper O is inserted after the original paper insertion instruction lamp is lit, quick copying can be performed regardless of the size of the original paper.

In addition, in multi-copying, if the switches S5 and Sa do not operate sequentially for detection because the original paper 0 and the photosensitive paper P are not separated, the q output of the flip-flop circuit FF+ is not inverted, so the solenoid S L3 is not activated. The drive gear, gear, release member 54 and the document paper path switching guide 56 after separation are set to the initial state as shown in FIG. 7B, and since the solenoid SL4 is not activated, the developing switching guide 73 is summarized as t in the initial state shown by the solid line in FIGS. 1 and 4.

Therefore, the two sheets are not separated and remain overlapped. P is
When the document paper separation and transfer path 53 is entered, the catch member 26 is opened by the movable catch release member 54 before the branching portion 29 to release the catch of the document paper 0, and the guide 56 releases the document paper O and the document paper 0 at the branching portion 29. By scooping up the photosensitive paper P from the circumferential surface of the separation drum 3o and guiding it to the original paper ejection path 28, it is ejected outside the machine without entering the original paper repeat transport path 7. Further, when the photosensitive paper enters the paper ejection path 27, it is guided by the developing guide 73 to the abnormal paper ejection path 71, and is ejected outside the machine without being sent to the developing means 69.

FIG. 14 shows another embodiment of the circuit portion within the dash-dotted line of the electric circuit in FIG. 12 that controls a series of operations in the copying machine.

In this embodiment, even when printing conditions are changed, the original paper insertion instruction lamp PL is always turned off by counting a constant number of pulses using the counter CT and the light detection switch Sl, and the switch S++ is controlled by the motor 76. 37- of the conveyance roller 24 driven by the shaft 24a, and a pulse disk 81 having slits of a predetermined pitch as shown in FIG. Consisting of each element,
As the disk 81 rotates, a pulse signal is generated with a pitch corresponding to the drive speed, that is, the conveyance speed, and this pulse signal is supplied to the CP terminal of the counter CT via the comparator COM+. Since CT is cleared, it does not accept pulse signals.

The CP terminal of the counter CT receives a pulse signal from the photodetection switch Sl when the switch Sl or the switch S2 is turned on at the moment of copying the last copy of the multi-copy, and the counter CT starts counting. counter CT
The count number is constant regardless of the copying speed, and is set to be slightly longer than the time required for the separation drum 30 to rotate once and the catch member 26 to return to its original position. During this count, the original paper insertion instruction is The lamp PL is turned off to indicate a state in which insertion of original paper is prohibited.

Components that are the same as those in FIG. 12 are designated by the same reference numerals as 38- be.

<In the case of single copy> When the switch Sl is turned on from the original paper OK, the ttLu signal inverted by the inverter B8 is input to the NAND circuit A6, and the flip-flop circuit FFa
A 1ゝH〃 signal is input to the CP terminal of , and its Q output is inverted to ゝゝH〃. This signal is inverted via the inverter BIO, and is inputted as an "L" times signal to the input terminal of the NAND circuit A6. When the 1N,' signal is input to this NAND circuit A6, its output is 'VH, Htt Double signal,
The original paper insertion instruction lamp PI- goes out, indicating that original paper insertion is prohibited. At the same time, flip-flop circuit F Fa
The tt Htt output signal is input to the input terminal of the NAND circuit A7, while the contact RY +-a of the relay RY +
Since + is off, the other input terminal of NAND circuit A7 is ゝゝHtt, so this NAND circuit A
The output of 7 is inverted to V''Lll, inputted to the CL terminal of the counter CT, and the clear state is released.As a result, the counting operation of the counter CT starts.

In addition, when the switch Sl is turned on, the ``H'' signal is input to the input terminal of the Noah game) As, and its output is inverted to ``L'' and given to the TR terminal of the timer T2, and the 3
and the timer T for the set time by capacitor C2K.
2 operates and 1 automatically feeds one sheet of photosensitive paper P in the same manner as in the embodiment shown in FIG.

In the case of copying short document paper 0, even if the switch Sl is turned off, the counter CT is still operating, and the flip-flop circuit FF
The Q output of the counter CT 3 holds "H", but when the counting operation of the counter CT is completed, the Q output of the counter CT is inverted by the inverter B7, and the signal is input to the PR terminal of the flip-flop circuit F Fa, and the flip-flop circuit By inverting the 9 outputs of the NAND circuit FF3 from 'H' to 'L', the output signal of the NAND circuit A6 becomes '
The VT-1ff is reversed and the original paper insertion instruction lamp pr- is lit.

The other operations are the same as those in FIG. 12, so the explanation will be omitted.

Therefore, in this embodiment as well, when making a single copy of a large number of sheets of short original paper, even if the switch Sl is turned off due to the passage of the original paper O, the counter CT is still counting, and the Q of the flip-flop circuit F Fa is The output maintains the ``H'' signal, and as a result, the output of the NAND circuit A6A maintains the ``H'' signal. In other words, during the counting operation of the counter CT, the original insertion instruction lamp pr- goes out L1
While the manuscript paper insertion prohibited state is displayed, do not insert the next manuscript paper 0, and insert the next manuscript paper 0 when the insertion instruction lamp pr- lights up, so that the next manuscript paper O can be ensured. is caught by.

<In case of multi-copy> After setting the number of sheets counter (not shown) to any number of sheets greater than or equal to 2 and turning on the multi-copy switch S+o, inserting the original paper O, the switch Sl is turned on, and in the same way as for single copy, The original paper insertion instruction lamp PL goes out, but the on signal of the switch SL causes 7 rip 70.
Ant game by the signal in which the Q output of Tsubu F Fa is inverted to tt Htt and the ON signal of switch Sho) A
Relay RY+ is activated by the "I-1" signal of output 2, and the NAND circuit is activated by turning on the contact RY+-a+.
Since the other input terminal of A7 becomes "L" 41-, the output of this NAND circuit A7 is maintained as "H" times the signal, and the counter CT is maintained in the clear state.

As a result, the flip-flop FF3 is not cleared, so the original sheet insertion instruction lamp P2 remains off during multi-copying.

The rest is the same as in the case of multi-copy in FIG. 12.

When the last sheet of multi-copy is being copied, the switch S2 detects the leading edge of the original paper O and turns on, and the "L" signal is input to the input terminal of the NAND circuit A6 via the inverter B9, and the number of sheets setting counter is input. The set number of copies returns to the initial set number, the multi-copy switch Sho is turned off, and the relay RY+ is turned off, so the clear state of the counter CT is cleared and the counting operation of the counter CT starts, and from then on, the copying operation is the same as the single copy. becomes.

Therefore, even during multi-copying, when inserting the next manuscript paper O,
By waiting for the insertion instruction lamp to turn on, copying can be performed quickly regardless of the size of the original paper.

A9-Effects The present invention is capable of reliably carrying out the repeated transfer of manuscript paper for multiple copies in a diazo copying machine as described above, and although the diameter of the separation drum is larger than that of conventional machines, it is possible to Regardless of the size of the paper, by timing the insertion of the original paper in accordance with the display of the instruction lamp, separation of the original paper or subsequent repeated transport can be reliably achieved.

Especially when making a single copy of multiple sheets of short manuscript paper,
By continuously inserting short lengths of original paper each time the original paper insertion instruction lamp is lit, the original paper can be reliably held by the gear/Z-chip member, and the efficiency of the copying work can be improved.

[Brief explanation of the drawing]

Fig. 1 is a cross-sectional view showing the internal mechanism of one embodiment, Fig. 2 is a side view of a part of the internal mechanism, Fig. 3 is a front view of a part around the separation drum, and Fig. 4 is another part of the internal mechanism. 5 to 9 are side views of a part of the internal mechanism showing the operating state of the separation drum and the catch member. FIGS. 10 and 11 are internal views showing the operating state of the ejected photosensitive paper receiving guide. A side view of a part of the mechanism, Fig. 12 is a control circuit diagram, Fig. 13 is an internal circuit diagram of the timer in Fig. 12, Fig. 14 is another control circuit diagram, and Fig. 15 is a specific example of the pulse generating means. FIG. O...Manuscript paper, P...Photosensitive paper, 6...Photosensitive paper automatic supply means, 7...Document paper repeat transport path, 10...Overlapping transport path, 11...Tip alignment member, 22... exposure section,
p t,...manuscript paper insertion instruction lamp, St, S2...
Original paper detection switch, 23... Overlapping both paper feeding path,
24° 25...Differential roller pair, 26...Catch member, 27...Photosensitive paper discharge path, 28...Document paper discharge path, 29...Branch portion, 30...Separation drum, 53...・
・Manuscript paper separation and transfer path, -46= Fig. 2 F-" --□-- 13 Fig. 235- Fig. 4, r-- Fig. 5 Fig. 7 △ Fig. 6 Fig. 7 B Fig. 8 Figure 10 Q17I Figure 1I

Claims (1)

[Claims] (1) Photosensitive paper is automatically fed as the manuscript is inserted and repeatedly transported, superimposed on the manuscript with the leading edge aligned, and both of the superimposed papers are fed into the exposure section, allowing for repeat copying. A diazo copier has an original paper insertion indicator lamp, a switch that detects the original paper on the original paper feed path, and a differential that moves the original papers of both superimposed sheets ahead of the photosensitive paper on the path for sending out both superimposed sheets from the exposure section. A pair of rollers and a pair of differential rollers pass through a pair of differential rollers, the leading edge of the document paper is caught by a catch member on a part of the outer periphery, and the document paper is rotated. a separation drum that separates the document paper and transports the document paper toward the branching portion of the document paper ejection path and the document paper repeat transfer path;
an indicator lamp control means that turns off the indicator lamp for a time set slightly longer than the time required for the catch member to return to its original position after one rotation; and an indicator lamp control means that opens and closes the catch member of the separation drum in a timely manner. hand,
A diazo copying machine capable of automatically supplying photosensitive paper and capable of repeat copying, characterized in that it is provided with a catch member opening/closing control means that enables the separation of original paper from photosensitive paper and the ejection and repeated transfer of separated original paper.