JPS6032860B2 - Copy number control device in a copying machine - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a copying machine, and more particularly to a copy number control device for a small copying machine in which a document table is reciprocated.

Conventionally, in small copying machines with a reciprocating document table, the circumference of the photoconductor is small relative to the length of the paper used, so the photoconductor needs to rotate multiple times for one copying process. be.

For this reason, if the signal for controlling the number of copies is taken from the rotation of the photoreceptor, the signal is issued multiple times for one copying process, making the control cumbersome and causing the activation of the signal generating means, such as the cam and mitt switch. Since the number of copies is increased and there are problems such as poor durability, the signal for the number of copies is taken from the movement of the document table.

However, when a signal is obtained from the movement of the document table, noise and vibration are generated when the signal generating means, such as the dock and the IJ mitt switch, are activated, resulting in various defects in copy quality.

The present invention has been made in view of the above-mentioned circumstances, and its object is to provide a copy number control device for a copying machine that is capable of extracting a copy number control signal from a photoreceptor once every multiple rotations of the photoreceptor. That's true.

Embodiments of the present invention will be described below with reference to the drawings.

A shaft 2 is rotatably supported structurally between the frames 1, 1, and a first lever 3 is fixedly installed at one end of the shaft 2, and a second lever 4 is fixedly installed at the other end of the shaft 2. is biased clockwise by a spring 9.

．． 5 is the support shaft 6 on the frame 1
This is a swinging punch which is provided so as to be able to swing up and down, one end 5a of which is placed in contact with the lower part of a pin 7 protruding from the first lever 3, and a cam follower 8 is provided at the end 5b of the swinging punch.

Reference numeral 10 denotes a cam, which is rotated in synchronization with the photoreceptor by being transmitted to a rotating shaft of a photoreceptor (not shown), and the cam 10 is in contact with the cam follower 8 .

11 is a solenoid 11 fixedly installed on a fixed side (not shown);
The movable part 11a is a recessed part 1 of the other end 5b of the swinging punch 5.
2, and when the solenoid 11 is energized, the movable part 11
a extends and comes into contact with the concave portion 12 to restrict the swinging of the swinging village 5 in the counterclockwise direction.

Further, one end of a link arm 13 is pivotally connected to the second lever 4, and the other end of the link arm 13 is connected to one end of an arm 15 rotatably supported on a base plate 19 via a shaft 14.

Reference numeral 16 denotes a ratchet provided on a base plate 19, and a pawl 17 that meshes with the ratchet teeth 16a is swingably attached to the arm 15.
It is biased to swing in the direction of meshing with a.

20 is a spring for preventing the ratchet 16 from reversing, 21 is a micro switch, and 22 is a dial, which is the ratchet 1.
The structure is such that when 6 rotates by one tooth, the scale increases by one.

23 is a pin that restricts the swinging of the arm 15.

Next, the operation will be explained.

When the copying process begins, cam 10 rotates synchronously with the photoreceptor.

When the cam 10 rotates and the small diameter portion 10a comes into contact with the cam follower 8, the first lever 3 is swung clockwise by the spring 9. , is swung counterclockwise by pin 7.

At this time, the solenoid 11 is de-energized and the actuating portion 11a is in the vertically small position (the OFF position in FIG. 1). Oscillating pestle 5
When the first lever 3 swings counterclockwise, the first lever 3 also swings clockwise, the second lever 4 swings via the rotating shaft 2, and the link arm 13 is moved upward.

As a result, the arm 15 swings until it touches the pin 23, and the pawl 17 rotates the ratchet 16 by one tooth.

When the photoreceptor further rotates and the cam lo rotates, the large portion 10
The cam follower 8 contacts b, the swinging punch 5 swings clockwise against the spring 9, the first and second levers 3 and 4 swing in the opposite direction to the above, and the link arm 13 descends. . As a result, the pawl 17 is separated from the ratchet 16 along with the force of the spring 18, so that the dial 22 attached to the ratchet 16 increases by one scale (the number of copies is 1). At this time, the ratchet 16 can be prevented from being reversed by the spring 20. The above operations are performed while the photoconductor rotates once, and when the photoconductor attempts to rotate further after completing one rotation, the solenoid 11 is energized using some kind of operation control signal, such as a return signal from the document table, and the actuating section 11a
with the swinging pestle 5 set at the extended position (the ON position indicated by the imaginary line in Figure 1).
It is supported by the recessed part 12 cut out on the other end 5b.

As a result, the swinging punch 5 is restricted from moving counterclockwise, so the photoreceptor rotates further, the cam 10 also rotates, and the small light part 1
Even if the cam follower 8 is positioned at 0a, the swinging punch 5 does not swing in all directions due to the spring 9, so the swinging punch 5 swings only once for every two rotations of the photoreceptor. That is,
The copy number control signal is generated only once for one copying process.

Therefore, the dial 22 that displays the number of copies increases by only one scale for every two revolutions of the photoreceptor, even though the number of copies control signal is derived from the rotation of the photoreceptor. Since the present invention is constructed as described above, if the movable part 11a of the solenoid 11 is placed at a position away from the recessed part 12 of the swinging punch 5, the swinging punch 5 swings due to the rotation of the cam 10, and the ratchet 16 is moved. The movable part 11a of the solenoid 11 rotates by a predetermined angle.
If it faces the concave portion 12 of the swinging punch 5, the swinging of the swinging punch 5 will be restricted and the ratchet 16 will not rotate even if the cam 10 rotates, so the rotation of the ratchet 16 will be controlled based on the rotation of the photoreceptor. It is possible to take out the copy number control signal more easily, and it is also possible to take out the copy number control signal once every multiple rotations of the photoreceptor.

Therefore, in a type of copying machine in which the document table moves back and forth and the photoreceptor rotates multiple times for one copying process, a copy number control signal is extracted from the rotation of the photoreceptor once for each multiple rotation of the photoreceptor. The number of copies can be accurately and easily controlled without applying vibration to the document table or generating noise.

In addition, the rotation of the cam 10 that rotates in synchronization with the photoreceptor is controlled by the swing village 5, the first lever 3, the shaft 2, the second lever 4, and the link arm 1.
3. Since the copy number control signal is mechanically transmitted to the ratchet 16 via the arm 15, etc., and the copy number control signal is obtained by the rotation of the ratchet 16, there is no need for malfunctions or complicated electrical control circuits, resulting in excellent reliability. Become something.

[Brief explanation of drawings]

The drawings show an embodiment of the present invention, and FIG. 1 is a plan view;
2 is a 0-view front view, FIG. 3 is a m-view front view, and FIG. 4 is a sectional view taken along the line W--W in FIG. 3. Figure 1 Figure 2 Figure 3 Figure 4

Claims (1)

[Claims] 1. In a copying machine of the type in which the document table reciprocates and the photoreceptor rotates multiple times for one copying process, a first lever 3 is installed at each end of a shaft 2 rotatably supported between frames 1 and 1. , the second lever 4 is fixed, a swinging rod 5 is swingably supported on the frame 1, and one end 5a of the swinging rod 5 is attached to the first lever 3.
and a cam follower 8 is provided at the other end 5b,
This cam follower 8 is opposed to a cam 10 that rotates in synchronization with the photoconductor, and the cam follower 8 is oscillated in a direction in which it comes into contact with the cam 10, and the movable portion 11a of the solenoid 11 is moved other than the oscillating rod 5. The link arm 13 is opposed to the concave portion 12 of the end 5b, and further, one end of the link arm 13 is pivotally connected to the second lever 4, and the other end is pivotally connected to one end of the arm 15 rotatably supported on the base plate 19 by the shaft 14. A pawl 17 that meshes with the teeth 16a of the ratchet 16 provided on the base plate 19 is pivotally connected to the arm 15 so as to be able to swing freely, and a spring 18 is used to engage the teeth 16a of the ratchet 16.
The substrate 19
1. A copy number control device for a copying machine, characterized in that a reverse rotation prevention spring 20 of a ratchet 16 is provided in the copying machine.