JPS58200249A - Start controller of copying machine - Google Patents

Abstract

PURPOSE:To eliminate miscopying due to difference of sheet size, by memorizing the sheet size during continuous copying, and providing a controller for restartin the continuous copying when the sheets are replenished and after comparison of both sizes, their accordance is conformed. CONSTITUTION:When an operator sets an amt. of continuous copying, data on the sheet size, etc. detected with sheet size detection switches 2a, 3a are memorized in RAM 12. When the sheets are used up before the completion of the copy set amt., and the operator replenishes the sheets, or selects another sheet feed tray, CPU10 judges that the continuous copying is on operation in accordance with the contents stored in RAM 12, and sends a control signal for restarting the continuous copying to start it. At this signal of CPU 10, when the size is different from that before the suspension, even if a use permission display device 13 displays ''copy OK'', the restart of continuous copying is not executed.

Description

[Detailed Description of the Invention] The present invention detects the paper size and restarts the continuous copying operation when the paper runs out during continuous copying and the paper is replenished or when another paper source tray is selected. The present invention relates to a starting control device for a copying machine.

Conventional copying machines, for example, are equipped with a no-peno detection switch that detects the presence or absence of paper in the paper feed tray.If paper runs out during continuous copying, the copying machine displays a message indicating that paper is running out, and It is supposed to stop.

However, according to conventional copying machines, in order to resume continuous copying, it is necessary to replenish paper, or to start again after switching to another paper feed tray. The operator may feel bothered by having to operate the button, and there is a risk that copying errors may occur because the machine restarts even if the paper size is different.

The present invention has been developed in view of the above, and is intended to eliminate the troublesome restart operation when paper runs out during continuous copying, and to eliminate copying errors due to differences in paper size. To provide a start control device for a copying machine, which restarts continuous copying operation based on a memory of a continuous copying state after confirming the paper size when the paper size is changed or when another paper feed tray is selected.

The starting control device for a copying machine according to the present invention will be explained in detail below.

FIG. 1 shows an embodiment of the present invention, in which two paper feed trays 1aslb located in a copying machine are each provided with a paper size detection switch 2a@2b* and a paper size detection switch 3as3b, and a door A door interlock switch 4 is provided to detect the opening and closing of the
A photosensitive drum 6 that transfers the image onto the paper 5 supplied from the selected paper feed tray 1m, lb, and a fixing roll 7 that fixes the transferred image are shown).

FIG. 2 shows a block diagram of an embodiment of the present invention, in which a paper size detection section 2 outputs a paper size signal detected by paper size detection switches 2 a e 2 b, and a no paper detection switch 3 as 3 b is connected to a paper feed tray. A no-paper detection section 3 outputs a no-paper signal when detecting that there is no paper left in the 1aslb, and a door interlock detection section outputs a door interlock signal when the door interlock switch 4 detects that the door is closed. 4, a continuous copy signal generator 8 which outputs a continuous copy signal when the operator sets the number of continuous copies (by turning on the switch from the buttock), and a paper feed tray 1aslb on the upper or lower stage. a tray selection unit 9 which outputs a tray selection signal when a tray selection signal is selected, and a tray selection unit 9 which processes input signals based on a program stored in a ROM 11 and stores necessary data (for example, a continuous copy signal including paper size) into a RAM. CPU outputs control signals by writing to 12 and reading when necessary.
10 (CPU 10.

ROM 11, RAM 12, and the input/output interface shown in the figure constitute a microcomputer 20), a use permission display section 13 that displays "Copy possible" based on a control signal, and a copy restart control section that restarts continuous copying. 14.Paper replenishment display section 15 which turns off the color "Paper not refilled" display when paper is replenished into the paper feed tray, and turns off the '1 "Please close door" display when the door is blocked. It has a door-in lock display section 16.

In the above configuration, the operation will be explained with reference to the flow chart of FIG. 3. When the operator sets the number of continuous copies, the continuous copy signal generator 8 outputs a continuous copy signal and the set number is displayed on the 4-channel display. (not shown) and stores the continuous copy status in the RAM 12. At the same time, paper feed tray l,,,a,1
When one of b is selected, a tray selection signal is output, and nine trays are selected and displayed on the operation panel display section (not shown), and the paper size detection switch 2a m3a
Based on the detection, the paper size detection section 2 displays the paper size of the selected tray on the operation panel display section (not shown).
12).

Press the Start button to start continuous copying (
At this time, "Copy possible" is displayed on the use permission display section 13, the paper supply display section 15 and the door interlock display section 16 are turned off), and continuous copying starts.

If the paper runs out before the set number of copies are completed, the no-paper detection switch 3 & or 3b detects this, the no-paper detection unit 3 outputs a no-paper-out signal, and the paper replenishment display unit 15 indicates that the CPU 10 Under the control, "Paper adjustment" is displayed. When the operator replenishes paper or selects another paper feed tray, it is determined that continuous copying is in progress based on the memory contents of RAM 12, and continuous copying is interrupted based on the paper size signal from paper size detection section 3. After determining that the paper size is equal to the previous paper size and further confirming that the door is closed by the door interlock signal output by the door interlock detection section 4,
If you wander for a predetermined period of time, when 2 to 3 seconds have passed, CPU 1
0 is the control signal for restarting continuous copying.Copy restart control unit 1
4, and continuous copying is resumed.

In this signal processing of the CPU 10, if the paper size is different from that before the interruption, the usage permission display section 13 will display "
Even if the message "Copy is ready" is displayed, continuous copying will not be resumed.

As explained above, according to the start control device for a copying machine according to the present invention, when the paper runs out during continuous copying and the paper is replenished, or when another paper feed tray is selected, the paper size is checked and then continuous copying is performed. Since the continuous copying operation is restarted based on the memorization of the state, it is possible to eliminate the hassle of restarting the continuous copying operation and copy errors due to differences in paper size.

[Brief explanation of drawings]

FIG. 1 is an explanatory diagram showing one embodiment of the present invention. FIG. 2 is a block diagram showing one embodiment of the present invention. FIG. 3 is a time chart of one embodiment of the present invention. Explanation of symbols: 1a, lb...Paper feed tray, 2...Paper size detection unit, 2m, 2b...Paper size detection switch, 3...
・Nopeno arm*output part, 3 a t 3 b... Nopeno mother-detection switch, 4... Door interlock switch (detection part), 5... Paper, 6... Photoreceptor drum, 7. ... Fixing roll, 8... Continuous copy signal generation section, 9... Tray selection section, 10... CPU, 11.
ROM, 12... RAM, 13... Usage permission display section, 14... Copy restart control section, 15... Paper supply display section, 16... Door interlock display section, 2
o...Microcomputer.

Claims (1)

[Scope of Claims] A copying machine that continuously copies a set number of copies, includes a storage means for storing a continuous copy paper size during a continuous copy operation when continuous copy is commanded, and a storage means for storing a continuous copy paper size during a continuous copy operation, A start control device for a copying machine, comprising control means for comparing the paper size with a new paper size when replenishing the paper size, and causing the copying machine to resume continuous copying when the paper sizes match.