JPH0317310Y2 - - Google Patents

Description

[Detailed explanation of the idea]

The present invention relates to a copy number clearing device for a copying machine capable of continuous copying. As a device to prevent the number of copies from clearing when there is no paper.
There is Publication No. 57-16183. This device is equipped with a circuit that prohibits the number of copies from being cleared when paper runs out during continuous copying, until the no-paper condition is released. Even if the clear key is pressed by mistake while replenishing paper, the number of copies is not cleared and the problem that the previous number of copies becomes unknown does not occur. However, if you really want to clear the number of copies or change the number of copies when there is no paper, you have to load copy paper to cancel the no-paper state, which is extremely inconvenient. The present invention has been made in view of the above, and its purpose is to provide a copy number clearing device that clears the number of copies or resets the number of copies depending on the number of operations of the clear section. That's true. To this end, in the present invention, the number of operations of the clearing section is counted by a counting section, and the clearing of the number of copies is controlled depending on the contents of the count when there is no paper. Examples of the present invention will be described below. The figure is a block diagram showing one embodiment of the present invention. Reference numeral 1 designates a paper no-detection switch, which is activated to output a detection signal when there is no copy paper in a paper feed cassette (not shown) of the copying machine. Reference numeral 2 indicates a paper-free state detection unit, and when it receives the detection signal from the paper-free detection switch 1, it changes the signal at the output terminal a from the previous binary ring level L signal to an H signal, and outputs the signal to the output terminal b. A signal to drive the paperless display device 3 is output. This paperless display device 3 is a lamp,
It consists of LEDs, etc. Reference numeral 4 indicates a clear key as a clear section, which outputs the H panel every time it is operated (pressed), and a part of it is input to the counter 5. This counter 5 outputs H or L signals to output terminals a and b, depending on the number of H panels arriving from the clear key 4, as shown in Table 1 below.

[Table] Reference numeral 6 is an AND gate that receives the signal of the output terminal a of the paper-free state detection section 2 and the signal of the output terminal a of the counter 5. 7 is an AND gate that receives the signal of the output terminal a of the paper-free state detection section 2 and the inverter 8. Inverted signal and clear key 4
9 is an AND gate that receives the signal from the output terminal a of the paperless state detection section 2 and the signal from the output terminal b of the counter 5. Reference numeral 10 indicates a copy number display control section, which includes signals from the numeric keypad 11 as a copy number setting section for setting the number of copies, and an AND key for clearing the number of copies and transferring current copy number data to the copy number storage section 12.・The signal from gate 6 and the signal from AND gate 7 for clearing the number of copies are inputted respectively, and the number of copies display 1
3, copy number data (data on the number of copies to be made from now on) is output as a display signal. The number of copies storage unit 12 is an AND gate 9
The stored copy number data is sent to the copy number display control section 10 in response to a signal from the copy number display controller 10. In the above, by operating the numeric keypad 11, the desired number of copies is set in the copy number display control section 10 and displayed on the copy number display 13, and when continuous copying is performed thereafter, each copy is The number of copies displayed decreases with each copy. While the copying machine is set in the paper feed cassette, the paper no-detection switch 1 does not operate, the signal at the output terminal a of the no-paper state detection section 2 is L, and the signal at the output terminal b is inactive. Therefore, AND gates 6 and 9 close their gates, AND gate 7 opens when the output of inverter 8 becomes H, and paperless display 3 does not perform any display operation. Therefore, at this time, by pressing clear key 4, the H panel that comes out from there will be set to AND gate 7.
is input to the copy number display control unit 10, the copy number data is cleared, and the copy number display 13
will be displayed as zero. On the other hand, when the copying machine runs out of the paper feed cassette, the paper no-detection switch 1 is activated and the paper-absence detection section 2 is activated.
A drive signal is output from the output terminal b, and the paper-free indicator 3 displays the paper-free state, and an H signal is output from the output terminal a, opening the gates of AND gates 6 and 9, and opening the gate of AND gate 7. Close. Therefore, if the clear key 4 is pressed once in this state, the copy number display control section 10 is not controlled via the AND gate 7. clear key 4
When you press once, one H panel is input to the counter 5, but this counter 5 has output terminals a of L and b.
However, the state of H remains unchanged. Note that this counter 5 is cleared every time the output of the AND gate 7 becomes H. When the clear key 4 is pressed again, the output terminal a of the counter 5 becomes H and the output terminal b becomes L, so the output of the AND gate 6 becomes H, and the copy number display control section 1
The copy number data of 0 (the number of copies that is set in advance to a predetermined value and decreases each time a copy is made, and when the paper runs out) is cleared, and the number of copies stored in the copy number storage unit 1 is cleared.
Transferred to 2. Therefore, at this time, the display on the copy number display 13 becomes zero. When the clear key 4 is pressed again, the output terminal a of the counter 5 becomes L and the output terminal b becomes H. This time, the output of the AND gate 9 becomes H, and the above information stored in the copy number storage section 12 is changed. The copy number data is returned to the copy number display control section 10, and the content of the data is set as the subsequent number of copies and is displayed on the copy number display 13. Thereafter, the above operation is repeated every time the clear key 4 is pressed. In other words, if you press the clear key 4 four times, the number of copies will not be cleared, if you press it five times, it will be cleared and the data will be transferred to the number of copies storage section 12, and if you press it a sixth time, the data will be recalled and set. will be displayed as well. As mentioned above, when there is no paper, clear key 4
Pressing once will not clear the number of copies, pressing it twice will clear it, and pressing it a third time will set and display the previous number of copies. This operation is repeated every time the clear key 4 is operated. The above is just one example, and if the signal states of the output terminals a and b of the counter 5 are changed from the clear key 4 to the number of H panels as shown in Table 2, the clear signal can be cleared when there is no paper. By pressing the key 4 once, the output of the AND gate 6 becomes H, the copy number data is cleared, and the copy number storage unit 1 is cleared.
By pressing the button twice, the output of the AND gate 9 becomes H, and the data is recalled and set and displayed.

[Table] From the above, according to the clearing device of the present invention, by operating the clearing section when there is no paper, the number of copies at the time when the paper becomes empty can be cleared and reset for each operation. The setting is repeated, and there is an advantage that it is possible to easily switch to either setting a new number of copies by clearing or continuing copying by resetting.

[Brief explanation of drawings]

The figure is a block diagram of an embodiment of the clearing device of the present invention.

Claims (1)

[Scope of Claim for Utility Model Registration] A copy number display control section that subtracts the number of copies for each copy, a copy number setting section that sets the number of copies in the copy number display control section, and a copy number setting section that sets the number of copies in the copy number display control section. A copying machine equipped with a clear section for clearing and a no-paper state detection section for detecting a no-paper state of copy paper, a copy number storage section for taking in and temporarily storing the number of copies from the copy number display control section, and the clearing section. The number of operations is counted, and this count value becomes a predetermined number N.
(N is a natural number), the output is inverted, and the output is restored and inverted every time after that. A gate section is provided that allows counting and sends the output to the copy number display control section and the copy number storage section, and when the paper no-state detection section detects no paper, the output of the count section is controlled. When the output is reversed, the copy number data in the copy number display control section is cleared and transferred to the copy number storage section, and when the output is restored, the copy number data in the copy number storage section is set in the copy number display control section. A device for clearing the number of copies in a copying machine, which is characterized by: