JPS6011350B2 - Copy number control circuit - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a copy number control circuit that improves interrupt performance by adding a counting circuit to a single copy number print switch.

2. Description of the Related Art In order to improve interrupt performance, a copying machine is known which is equipped with a print switch dedicated to the number of single sheets in addition to a normal print switch.

With this copier, even if the normal print switch is set to make 12 copies, for example, by operating the single-copy switch, it is possible to make any number of copies regardless of the normal print switch setting. This is what I did. However, when making two copies, for example, using the conventional interrupt single-copy switch, the user must first press the stop button once to stop the copying machine, and then press the single-copy switch for each copy, making the operation difficult. It had the disadvantage of being complicated.

This invention has been made with the aim of eliminating such drawbacks, and by adding a switch counting circuit exclusively for the number of single sheets for interrupt, the desired number of sheets can be obtained by pressing the switch exclusively for the number of single sheets in advance for the desired number of sheets. The present invention aims to improve interrupt performance by providing a copy number control circuit that enables interrupt copying.

The present invention will be described in detail below with reference to an illustrated embodiment.

In the figure, 1 is a normal print switch, and by turning on this switch 1, the number of sheets can be set in advance by switching group 7.
This allows the number of copies stored in the programmer 8 to be obtained, and this print switch 1 is normally used when obtaining a plurality of copies. 2 is a single interrupt switch installed in parallel with the print switch 1 above, and is connected to the AND gate 3 along with the print switch 1 above.
A portion of the signal is also input to the R-S flip-flop 4.

3 is the above print switch 1 and the single sheet quantity dedicated switch 2
AND gate for detecting whether any of the
4 is an R-S flip-flop which prohibits a single circuit when the single circuit switch 2 or the single circuit is turned on;
This R-S flip-flop has a function to prevent the main motor 20 of the copying machine from being stopped even if the programmer 8 is set to 00 sheets by the sheet number setting switch group 7 and a match signal is output from the programmer 8. have.

5 is R- set by the output of the AND gate 3.
The S flip-flop stores the signal from the print switch 1 or 2, and the output side turns on the above-mentioned shutoff motor 20 via the inverter 6 and transistor 18.
- It is connected to the LI relay 19 that controls OFF.

As mentioned above, 7 is a group of switches for setting the number of copies, which has the function of encoding the signal from the switch 7, and the function of outputting a match signal date when the set number matches the number of copies. It is connected to the input side of a programmer 8 which has a function of counting 1 and a function of operating a set number display 9 and a copy completion number display 10 connected to the output side.

Further, a matching circuit 12 is connected to the output side of the programmer 8 to detect whether the output of a counting circuit 11 that counts the number of times the single copy number switch 2 is turned to ○N matches the copy completion number display 10. When these inputs match, a match signal is output from the match circuit 12. 1
8 is a NAND gate into which the signals from the coincidence circuit 12 and the R-S flip-flop 4 are input;
It has a control input related to the complement of D gate 1 3',
When the single copy switch 2 is turned on and the copying machine is operating, NAND is prohibited.

．． On the other hand, each of the NAND gates 13, . Either one of these NAND gates 13, 13' is L on the output side of 13'.
AND gate 14 that outputs an L signal when it becomes an OW signal
is connected to the output side of the AND gate 14, and a delay circuit 15 is connected to the output side of the AND gate 14, which delays the L signal for a certain period of time when the L signal is output to the AND gate 14, and then outputs the L signal to the R-S flip-flop 5. has been done.

16 is a copying drum 21 of a copying machine, for example, shown in FIG.
A detection switch set between the and paper feed tray 22 outputs an ON signal to the programmer 8 every time copy paper 23 passes, and 17 outputs an ON signal to the programmer 8 when the main motor 20 of the copying machine stops. The above counting circuit 11 outputs a signal.
and a falling differential circuit that clears the R-S flip-flop 4; 24 is a sheet count display connected to the counting circuit 11 via a decoder 25; the single sheet count exclusive switch 2 is turned on;
The number of times this has been done is now displayed. In the case of normal copying, when a desired number of copies, for example 12, is set in the programmer 8 using the number setting switch group 7, "12" is displayed on the set number display 9.

If you turn on print switch 1 in this state, AND
The output of the gate 3 changes from L to L, the Q of the R-S flip-flop 5 changes from L to L, the relay 9 is energized via the inverter 6, and the main motor 20 is rotated. Copying begins. Also at this time R-S
Q of flip-flop 4 is L, so NAND gate 13
' output is day, and Q of R-S flip-flop 4 is day. When copying is started, the switch 16 is turned on every time the copy paper 23 passes, and the copy completion number display 10 displays the number of copy completions as "01" and "02". When the copy completion number display 10 counts "12", the match signal output of the programmer 8 changes from L to day, so the NAND gate 1
3 becomes L from fl, and as a result, the output of the AND gate 14 also changes from day to day, and after a certain time delay by the delay circuit 15, that is, after the 12th copy paper 23 is ejected from the copying machine, the output becomes R-. An L signal is output to the S flip-flop 5. As a result, the R-S flip-flop 5 is reset, Q changes from L to day, and this H
The signal opens the relay 19 via the inverter 6, and the main motor 20 is stopped. Further, when the set number display 9 shows "2" and the operator wishes to obtain three additional copies by interrupting, the single copy number exclusive switch 2 for interrupting is pressed once.

This causes the main motor 20 to start operating, so
Next, when the single sheet count switch 2 is pressed twice again, the counting circuit 11 counts ``31'' and displays it on the sheet number display 24, and the counting circuit 11 inputs ``3'' into the coincidence circuit 12. At this time, the output of the matching circuit 12 is L. When the copy paper 23 continues to be copied and the switch 16 is turned on twice, the coincidence signal from the programmer 8 changes from L to day.
Since the Q of the R-S flip-flop 4 is L, the output of the NAND gate 13 remains unchanged. and switch 16
When turned on by the third copy paper 23, the coincidence circuit 1
The output of the NAND gate 13' becomes L from the day, and the output of the AND gate 14 also changes from the day to L. As a result, the main motor 20 is stopped after a certain period of time has elapsed, that is, when the third copy paper 23 is ejected, and the interruption copying is completed. Thereafter, by turning on the print switch 1 again, the desired number of copies, that is, two copies, can be obtained in succession to the previous copy. Note that the NAND gate 13 is provided to prevent the main motor 20 from being stopped by a coincidence signal generated when the second copy paper 23 operates the switch 16.

Furthermore, when the set number display 9 shows, for example, "12", the operation is the same as described above when 3 copies are interrupted, but when the number of interrupts is less than the set number, the coincidence signal input to the NAND gate 13 is L, it never becomes a day, and therefore no coincidence signal is output. As described in detail above, this invention adds a switch counting circuit dedicated to the number of single sheets for interrupts that is attached to a normal printed switch.
By simply pressing the single-copy switch for the desired number of copies in advance, it is possible to automatically make a predetermined number of interrupt copies, so it is now possible to make the desired number of copies by operating the single-copy switch for each copy. Compared to the case where copies are obtained, interrupt performance can be significantly improved.

In addition, since it is possible to make interrupt copies of the required number of copies without changing the number of copies set in advance before copying, there is no need for troublesome steps such as setting the number of copies again after interrupt copying, and there is no need to worry about making mistakes in the number of copies. This eliminates problems such as unnecessary copying and wasted paper.

[Brief explanation of the drawing]

The drawings show an embodiment of the present invention, with FIG. 1 being a block diagram, FIG. 2 being a circuit diagram of the main motor portion, and FIG. 3 being a schematic diagram of the print roller portion. 1 is a print switch, 2 is a single-sheet switch, 11
is a counting circuit. Figure 1 Figure 2 Figure 3

Claims (1)

[Claims] 1 A single print switch 2 for interrupts is provided in parallel with the print switch 1, an AND gate 3 detects when either one of the switches 1 and 2 is turned on, and the output of the AND gate 3 is set. main motor 20
The R-S flip-flop 5, which controls the rotation of the
Counting circuit 11 to be displayed at 4 and switch group 7 for copy number
a programmer 8 which stores the set number of copies set by the above, and outputs a match signal when the set number matches the number of signals from the detection switch 16 which issues a signal each time a copy is made; and the counting circuit 1.
1 is a coincidence circuit 12 that outputs a coincidence signal when the counted number and the display on the copy completion number display 10 match; and a delay circuit that resets the flip-flop 5 after delaying the output of the coincidence circuit 12 for a certain period of time. 15. A copy number control circuit comprising: