JPS59121355A - Control device for copying machine - Google Patents

Abstract

PURPOSE:To eliminate the need for a mechanical changeover means and to reduce cost and floor space by making use of a control mechanism, etc. installed in a copying machine body for changing over the display of a tray size and enabling service perosnnel to change over and display electrically the size. CONSTITUTION:A copying machine constituted to change over and display the tray size set in a specific tray housing part by service personnel without using any size detecting means has a control part 41 and when said part is changed over to a selfdiagnosis mode (tray size set mode) by making the operation different from an oridinary operation for starting the copying machine and when an optical button such as clear button CL is pushed in this state, the size is displayed on a display part 27 for a paper size by the part 41 and the desired tray size can be stored in a nonvolatile memory. The tray size in the memory 28 stored in such a way is displayed on the display part 27 by the part 41 without using any mechanical changeover means when the copying machine is started in an oridinary mode.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention provides a control device for a copying machine, more specifically, a copying machine that selects and sets trays carrying copy sheets of different sizes in a tray storage section of a copying machine main body. This invention relates to a control device that displays the size of a tray set in a storage section.

Conventionally, in order to display the size of the tray set in the tray storage section of the copying machine (in other words, the size of the copy paper), a switch was placed facing the tray and the copying machine, and a tray of a predetermined size was set. In some cases, it is known that the size of the tray is displayed on the operation panel.

2. Description of the Related Art Copying machines having a plurality of tray storage sections have been proposed in which only trays of a specific size can be set in a specific tray storage section.

In such a copying machine, a specific tray storage section is opened 8 times according to the tray size to be set, and the displayed tray size is switched by a mechanical switching means such as a toggle switch. Note that this type of work is normally carried out by the service personnel of the copying machine manufacturer in response to the user's request.

However, as mentioned above, if the tray size to be displayed is switched by a mechanical switching means, a mechanical switching means such as a toggle switch must be specially installed, which increases costs and requires installation space. It also has disadvantages in terms of.

The present invention has been made in view of the above circumstances, and its object is to provide a copying machine in which a service person can switch and display the size of a tray set in a specific tray storage section without using a size detection means. It is an object of the present invention to provide a control device for a copying machine in which a service person can electrically switch and display tray size display using a control mechanism installed in the copying machine main body.

The present invention will be described in detail below with reference to the drawings.

FIG. 1 is a schematic explanatory diagram of a copying machine, in which a photoreceptor 2 is installed inside the main body I of the copying machine, and around the photoreceptor 2 there is a charger 3,
A developing device 4, a transfer device 5, a cleaning device 6, etc. are arranged in sequence, and an exposure optical system consisting of an exposure lamp 8, an image forming lens 9, etc. is located below a platen glass 7 provided in the copying machine main body IK. A system 10 is provided and is configured to irradiate and expose the original image on the platen glass 7 onto the photoreceptor 2 to form an electrostatic image.

Inside the copying machine main body 1, there is a first. Second. 3rd tray J I,
, l 1. , l I, are provided so that the sheet is conveyed from any one tray II to the total transfer unit 5. I2 is a fixing device.

The copying machine main body 1 is provided with an operation panel 20, and the operation panel 20 includes a copy start button 21, a first... Second. Third tray selection switch 22. .

22□, 22. A plurality of copy magnification selection switches 23, a close-up number setting switch group 24, a display group 25, etc. are provided.

Then, with the power supply switch 30tl-ON,
When operated in the same manner as before, the control mechanism 40 controls the operation of each device to obtain a copy through a predetermined copying process.

Note that since this operation is conventionally well known, its explanation will be omitted.

As shown in FIG. 3, the control mechanism 40 is equipped with a control section 41 and a ROM 42 that gives drive commands to the control section 4IK. A signal is input from the switch 30,
Based on the input fc multiplied signal, the photoreceptor 2, charger 3, developing device 4, transfer device 5, cleaning device 6, exposure optical system 10, etc.
It is configured to control the operation according to the program of OM42.

The third tray IIa is a specific tray, and the service staff adjusts the tray storage section 11'l so that only trays of a specific size can be set therein.

In addition, 1. The tray storage sections II', , II- of the second trays II, , II□ are configured so that trays of any size can be inserted, and the set tray size is operated using a tray detection means such as a switch) on the tunnel 20. This is how it should be displayed.

FIG. 4 is an explanatory diagram of a control circuit that displays the size of set copy paper. When the power supply switch 30 is turned on and the copying machine is started, the first. Second tray selection switch 22. ．． If you turn on any one of 222 or 10,000,
The tray is displayed on the tray display section 26, and
The size of the tray (that is, one paper size) is displayed on the paper size display section 27, and when the third L/A selection switch 22sk is turned on, the tray is displayed on the tray display section 26, and the paper size display section 27 The tray size (template, paper size) stored in the nonvolatile memory 28 is displayed.

Next, the operation of storing the size of the third tray pile in the nonvolatile memory 28 will be explained based on the chart 70 in FIGS. 4 and 5.

First, when the power-on switch 30 and any switch provided on the operation panel 20, such as the interrupt switch 29, are turned on at the same time, the control unit 41 determines that the self-diagnosis mode has entered, and enters a self-diagnosis mode different from normal operation. Switched to operation.

In this state, when the third tray selection switch 223 is turned ON and the clear button CL of the copy number setting switch group 24 is pressed, the control unit 41 will set the tray size in the third tray storage section +1'3. , the paper size display section 27 displays the 4-size paper size.

Then, when the clear button CL is pressed again, the 34 size is displayed, and when the clear button OL is pressed again, the 85 size is displayed.

In this manner, when the desired size is displayed by pressing the clear button CL several times, the copy start switch 21 is turned on to determine the tray size.

As a result, the control unit 41 causes the nonvolatile memory 28 to store the tray size at that time.

As described above, switch the control unit 4I to the self-diagnosis mode (pickup, tray size set mode) by performing an operation different from the normal copying machine startup operation, and press any button such as the clear button CL in this state. The control unit 41 displays the size on the paper size display unit 27, and the desired size is displayed fLf.
By pressing any button such as the copy start button 21 from c, the desired tray size can be stored in the nonvolatile memory 2g.

After this, the power supply switch 30'e is turned OFF to bring the control section 4I into the initial state. (However, the tray size stored in the non-volatile memory 28 is not cleared and continues to be stored.)

Then, when the power supply switch 30e is turned on to set the normal mode and the third tray selection switch 22° is turned on, the tray size stored in the nonvolatile memory 2g is displayed on the paper size display section 27 by the control section 4I.

In the above embodiment, the tray selection switch 22 is set to O.
Although the size of the N trays is displayed, each tray l '1
Even if the tray size (that is, paper size) that is set is displayed by displaying the size of 1 "t + "s, and displaying the tray corresponding to the turned-on tray selection switch 22 on the tray display section 26, good.

As described above, the present invention provides a copying machine in which a service person switches and displays the size of a tray set in a specific tray storage section without using a size detection means. Service personnel can switch and display electrically using a control mechanism installed in the copier body, and there is no need for mechanical switching means such as toggle switches as in the past, which reduces cost and installation space. But it will be advantageous.

[Brief explanation of the drawing]

The drawings show an embodiment of the present invention, and FIG. 1 is a schematic explanatory diagram of a copying machine, the second factor is a plan view of the operation knob, and the third factor is a plan view of the operation knob.
FIG. 4 is an explanatory diagram of the control mechanism, FIG. 4 is an explanatory diagram of a circuit for storing the tray size in a nonvolatile memory, and FIG. 5 is an operation flowchart thereof. 27 is a display section, 28 is a nonvolatile memory, and 40 is a control mechanism. Applicant Fuji Xerox Co., Ltd. Agent Patent Attorney Masaru Yonehara Figure 1 Figure 2 Figure 0 @ Figure 3 Otsu n

Claims (1)

[Claims] In a copying machine in which tray sizes are switched and displayed by service personnel without using a size detecting means, means for switching a control mechanism 40 that operates based on a predetermined process from a normal mode to a tray size setting mode. , when in the tray size set mode, the control mechanism 4
A non-volatile memo that remembers the tray size based on the signal input to 0! 72g, and a display section 27 that displays the tray size stored in a nonvolatile memory 28 when the copying machine is started in a normal mode.