JPS6139417Y2 - - Google Patents

Description

[Detailed description of the invention] This invention makes multiple copies of each original by overlapping the copying material for each original each time while circulating one or more originals through an original circulation path provided in the copying machine. The present invention relates to a copy interrupting device for an automatic copying machine that can automatically take a copy.

In recent years, there has been an increasing trend toward high-speed automation in diazo copying machines, and in particular, by equipping them with automatic document repeat devices and automatic copy material feeding devices,
When making multiple copies from one original, it is no longer necessary for the operator to overlap the original and copy material and insert them into the machine each time.

Instead, if you notice lateral misaligned copies, blown-out or under-burned copies due to mixed originals, copies of folded edges, copies of reversed originals, copies with the feeding direction reversed, or other abnormal copies,
Or, if the original and copy material are not separated after printing, or if the separated copy material causes a paper jam, immediately eject the circulating original outside the machine and do not interrupt copying. The circulation of originals is repeated until the number of times the document has been copied is completed, wasting copy material or accumulating paper jams.

For this reason, the above-mentioned automatic copying machine has conventionally been provided with a means for ejecting a document through an internal circulation path to the outside of the document machine during repetition by an operator's push button operation.

An example of an automatic diazo copying machine equipped with an automatic document repeat device and an automatic copy paper feed device is outlined in FIG. It is also possible to install an automatic paper feeder. The copying machine 1 includes an automatic copy material (photosensitive paper) feeder 3, an automatic document repeater 4, an exposure section 5, and a phenomenon section 6.

The original inserted into the original repeating device 4 of the copying machine 1 from the original insertion table 2 is transported by a conveyor belt 4 that is passed between an original receiving roller pair 41 and a feed roller 42 provided at a position to pass the original to the exposure section 5.
3 to the exposure section 5. There is a micro switch in the document receiving slot that is activated when the document passes through.
SW1 is provided, and when this detects the leading edge of the document O, the photosensitive paper S is fed one by one for each document from the photosensitive paper automatic paper feeder 3 and placed at the exposure section entrance point A. After the leading edges of the original O and the photosensitive paper S are aligned and overlapped, the original O and the photosensitive paper S are conveyed by a conveyor belt 53 to a printing cylinder 52 containing a built-in light source 51, and exposed while being conveyed around the printing cylinder. It will be done. After completion of exposure, the polymer is separated by separation tanks 54 and 55 whose interiors are kept under negative pressure, and the photosensitive paper S is passed through a sealing sleeve 6 inside the developing section 6.
2, and after being processed by the processing tank 61, it is discharged to the copy receiver 63.

On the other hand, the document enters the automatic repeat device 4 and is repeatedly conveyed to the exposure section 5 by a repeat belt 44 provided between the document entrance from the exposure section and the feed roller 42 leading to the exposure section. The repeat belt 44 and the conveyor belt 43 are disposed close to and parallel to each other from the middle, and between them, the paths of the inserted original and the repeat original are the same. A micro switch SW2 is provided at the entrance of the repeat path in the automatic document repeat device, which is activated when the document passes.Subsequently, the solenoid SOL1 switches the document transport path to the repeat path toward point A and the discharge roller 47. A repeat switching pawl 45 is provided that can selectively switch to the outside discharge path that goes from the outside of the machine to the outside of the machine. The repeat switching claw 45 is held on the repeat path side until the preset number of repeats is completed, and the micro switch SW2 is
When the number of times the document is repeated reaches a preset circuit, the solenoid SOL1 is turned on, the repeat switching claw 45 is switched to the outside discharge path, and the document is discharged to the document receiver 48 by the discharge roller 47. The feeding of photosensitive paper for repeat originals is carried out in response to the document leading edge detection signal from the micro switch SW2, but the feeding of photosensitive paper is not carried out in response to the last detection signal.

Now, to interrupt the copying when an abnormal copy is noticed during the above-mentioned repeat, press the button of the repeat cancel switch (not shown) to activate the solenoid.
This is done by turning on SOL1, switching the repeat switching claw 45 to the outside discharge side, and stopping the machine after discharging the document being repeated.

However, in conventional devices, the repeat switching pawl 45 is activated immediately when the repeat canceling switch is pressed, so there may be cases where the leading edge of the document is at the operating end of the repeat switching pawl 45 when the push button is pressed. It's possible. In that case, the document will not be smoothly guided to the exit path, and the document may even be damaged. Further, when the repeat switching claw 45 is activated while a sheet of original is conveyed along the repeat path while straddling the repeat switching claw 45, the original is pressed against the toe of the repeat switching claw 45 and stopped.
There is also a risk that the documents being repeated may cause paper jams one after another.

This invention solves the above-mentioned drawbacks of the conventional copy interrupting device for automatic diazo copying machines, and is capable of ejecting the original being repeated outside the machine and interrupting copying without causing damage to the original or paper jam. The purpose is to provide an interruption device.

Hereinafter, this invention will be explained in detail based on drawings showing embodiments thereof.

The copy interrupting device of the present invention has a document ejection switch (repeat release switch), and is different from conventional devices in that the repeat switching claw 45 is operated to switch the document path to the outside ejection side. It is similar, but instead of immediately turning on the solenoid SOL1 and activating the repeat switching pawl when the document ejection switch is turned on, the push button of the document ejection switch SW5 is operated as shown in the circuit diagram in Figure 2. The document ejection signal sent by It is connected to the circuit AND1 so as to have both inputs thereof. The means for generating a pulse when the switch SW2 detects the leading edge of the document is a circuit that applies a pulse current to a solenoid (not shown) for a certain period of time when the leading edge of the document is detected by the switch 2, which is provided to count the number of repeats. 7 can be used. The output of the AND circuit AND1 is input to the solenoid SOL1 via the amplifier circuit 8, and the repeat switching pawl 45 is actuated.

Since the copy interruption control circuit of this embodiment is constructed as described above, when the operator notices abnormal copying and presses the push button of the document discharge switch SW5, a document discharge signal is input to the AND circuit AND1. However, after that, the document leading edge detection switch SW2
detects the leading edge of the document and inputs the pulse signal from the pulse generating circuit 7 to the AND circuit AND1, and then outputs it from the AND circuit AND1, turns on the solenoid SOL1, and switches the repeat switching claw 45 to the outside discharge path side. .

Therefore, the on/off timing of the document ejection switch SW5, the document leading edge detection switch SW2, and the solenoid SOL1 is as shown in FIG. ,
The document guide direction of the repeat switching claw 45 is set to outside the machine.

Since the documents that are simultaneously conveyed through the document repeat path are conveyed at regular intervals, the leading edge of the next document is usually moved before the trailing edge of the first document has passed the tip of the repeat switching claw 45 and has not yet been cut. is the switch SW
2 is not activated, so if solenoid SOL1 is activated at the timing shown in Figure 3, the repeat switching claw may damage the leading edge of the document or press down on the document, preventing it from being transported and causing a paper jam. Nothing happens.

In order to detect a jam at the inlet of the automatic repeat device 4 for repeat documents, another switch SW3 is installed downstream of the document leading edge detection switch SW2.
(See Figure 1), it is possible to use this switch SW3 as a document leading edge detection switch for the copy interrupting device of the present invention, but depending on its position, the repeat switching claw 45 may be This is not very appropriate since there is a possibility that the leading edge of the document may pass the tip of the repeat switching claw 45 before the switching operation is completed.

Further, as a means for detecting whether the original and the photosensitive paper are not decomposed after printing is completed, the paper is placed at a point on the photosensitive paper transport path having a path length equal to the path length from the separation point sandwiched between the separation tanks 54 and 55 to the switch SW2. By providing detection switch SW4, two switches
SW1 and SW4 can detect whether the original and the photosensitive paper are inseparable. Also, by providing one more switch downstream of this switch SW4, it is possible to detect a jam in the photosensitive paper. By using these methods together with the document/photosensitive paper non-separation signal or photosensitive paper jam detection signal and the artificial document ejection signal from the push button switch, the document is automatically damaged when non-separation or photosensitive paper jam occurs. This makes it possible to eject and interrupt copying without having to do so.

As described above, according to the present invention, copying can be interrupted by artificially ejecting a repeating original out of the machine without causing damage to the original or paper jam.

[Brief explanation of the drawing]

FIG. 1 is a sectional view showing an example of a schematic configuration of a diazo copying machine having an automatic document repeat device, FIG. 2 is a circuit diagram showing an example of a control circuit of the copy interrupting device of the present invention, and FIG. This is a solenoid timing chart. 1...Automatic diazo copying machine, 4...Document automatic repeat device, 44...Document repeat belt, 45...
...Guide member (repeat switching claw), SW2...Document leading edge detection means, SW4...Document/copy material non-separation detection means, SW5...Document discharge signal transmitter (push button switch).

Claims (1)

[Claims for Utility Model Registration] (1) A document having a document circulation path and a guide member for selectively switching the conveyance path for the documents circulating in the path to the circulation path and the discharge path outside the machine, Alternatively, in a copy interrupting device of an automatic copying machine, which is capable of repeatedly circulating a plurality of originals through the circulation path, overlapping copying material for each original each time, and automatically making multiple copies of each original, a switch that can be pressed regardless of the position of the original in the original circulation path to interrupt the copying operation; a leading edge detection means for the original located upstream of the guide member; A copy interrupting device comprising: a control circuit that switches the document conveyance path of the guide member to the outside ejection path side in response to a signal transmitted by the leading edge detection means. (2) Claim 1 of the first claim for registration of a utility model, characterized in that the document leading edge detection means also serves as a switch for counting the number of circulations in the circulation path of the document.
Copy interruption device as described in Section 1.