JPS61121641A - Picture forming device - Google Patents

Abstract

PURPOSE:To reset the mode into a mode before power OFF when a power supply is turned on by providing a memory storing always the newest mode and setting automatically the titled device to attain the said mode as soon as the power supply is turned on. CONSTITUTION:An operation panel 31 is provided with a sub CPU 55 and backed up by a stand-by power supply 29. The sub-CPU 55 is connected to a main CPU 2 via a bus line 56. Every time a mode setting key on the operation panel 31 is depressed newly, the new mode is transmitted to the main CPU 2 as new data. Then the newest mode stored in the main CPU is transferred to the sub-CPU when the main power supply is turned on to set automatically the device to the newest mode.

Description

DETAILED DESCRIPTION OF THE INVENTION [Technical Field] The present invention relates to an image forming apparatus such as a facsimile machine or a copying machine.

[Prior Art] For example, conventional facsimile machines are configured so that the operator can freely select and set various modes such as fine and normal pixel density, dark and light image density, automatic reception and manual reception, etc. ing.

This setting operation is performed by pressing a key on the operation panel, and when it is accepted by the control device (CPU) side, an LED lamp etc. is lit in the part corresponding to the mode, indicating to the operator that the mode has been set. Inform.

However, once the power is turned off, the previously set mode is canceled, and the next time the power is turned on, it is automatically set to the initial mode.

Therefore, the operator has to set the desired mode again, making the operation extremely complicated. [Purpose] The present invention has been made to eliminate the above-mentioned drawbacks of the conventional method. It is an object of the present invention to provide an image forming apparatus configured to be able to automatically reset to a mode before power supply 01''F.

[Example] Hereinafter, the present invention will be described in detail based on the example shown in the drawings.

Figure 1 and the following diagrams explain one embodiment of the present invention.
The figure shows the overall structure of a facsimile machine to which the present invention is applied.

In FIG. 1, a crystal oscillator indicated by the symbol l generates a reference clock for the entire device.

The output clock of the crystal oscillator 1 is given as a reference clock to a CPU (central processing unit) 2 composed of a desired microprocessor element and the like. CPU2 connects ROM3, RAM4,
Timer 5. PPI (Programmable Para
llel l10) 6, 7, 8 and 10, UPI
(Peripheral CPU) Connected to 9.11.

Timer 5. Modem controllers 12. Tonal detector 13. and a modem 14 are connected, and data input/output to/from a communication line is performed via these input/output ports. Tonal detector 1
3.14 is connected to a subscriber telephone line W and a telephone 28 via a connection card (wiring board) 26.

PPl6 is for data input/output and power control with the operation panel 31, and is connected to the operation panel 31 and the feed switch 3 via the operation panel/power control device 16.
2 is connected.

The operation panel 31 also has a known telephone switch, which connects the telephone line connected to the facsimile device to the telephone set 28 and allows the switch to switch from facsimile communication mode to normal telephone mode. There is.

UPI9. ll controls the operation of the recording system.

The UPI 9 includes a plunger driver 21 for controlling the recording paper cuff tab plunger 34 and a motor 5 for transporting the recording paper.
A motor driver 22 that controls 5M2 is connected. A thermal head TPH is connected to the UPI 11 via a thermal head driver 25, and UPIll drives the thermal head TPH in accordance with recording data to perform recording. Recording paper RP is conveyed by pinch roller PR driven by motor 55M2 as the recording operation progresses. Further, a recording paper sensor RPS configured using a photo interrupter, a limit switch, etc. is provided on the conveyance path of the recording paper RP.

PPll0 is used to input and output data to the reading, reading and alarm systems. PPll0 has an image data processor/driver 23. A lamp driver 24 is connected. That is, the document DOC is transported by the feed roller FR while being illuminated by the light source LMP controlled by the lamp driver 24, and the reflected light from the document DOC is converged via the lens L onto the line sensor LS composed of a CCD sensor or the like. imaged.

The image data output from the line sensor LS is amplified by the amplifier 33, input to the image data processor/driver 23, and further sent to the main data bus via the PPI.

Further, a buzzer speaker 19 is connected to the PPll0 via a buzzer driver 18. This buzzer speaker 19 is also provided in conventional devices to notify errors such as no recording paper or communication procedure failure.

Power for the entire device is supplied from a main power supply device 27. However, in the standby state, this main power supply device 27 is OFF, and the operation panel 31 and N
Only the CU (Network Control Unit) 15 is supplied with power and is in a standby state. These power supplies 27.29
A commercial AC power source is connected to the main switch MSW and the noise filter 30.

Further, a RAM 44 is backed up by a battery 45 and stores each mode input by the operator via the operation panel.

FIG. 4 shows a schematic structure of the operation panel through which the operator inputs each mode and other settings.

In Fig. 4, the reference numeral 46 is a setting key for setting various modes, the reference numeral 47 is a numeric keypad similar to a button phone, and the reference numeral 48 is for storing an abbreviated telephone number of the other party and making a one-touch call. It is a one-touch dial key that can be used.

On the other hand, FIG. 2 shows a block diagram of a control circuit of the operation panel 31. As shown in FIG.

The operation panel 31 is provided with a sub CPU 55,
It is backed up by a standby power supply 29.

This sub CPU 55 is connected to the main CPU 2 via a pass line 56.

Further, the operation panel 31 is provided with a display 52, which is operated by the sub CPU 55 via a driver 59.

Reference numeral 58 indicates a register, reference numeral 53 indicates each key on the operation panel, and 54 indicates a light emitting diode that is lit in correspondence with each key.

Next, the operation of this embodiment configured as described above will be explained with reference to the flowchart of FIG. 3 and the timing chart of FIG. 5.

As shown in Figure 5, while the office power is on, the sub CPU
The standby power supply that starts the unit is always on. On the other hand, the main power supply that starts the main CPU and the reading devices, recording devices, etc. under the control of the main CPU is turned on only when the office power is turned on, during transmission and reception copying operations, and when there is a key input from the operation unit. There is.

Figure 3 (A) shows the control on the sub CPU side, and (B) shows the control on the main CPU side.
This shows control on the U side.

When the office power supply starts up, the sub CP is activated in step S1.
U performs initialization, turns on the main power supply, and starts the main CPU.

Next, in step S2, wait for a command to turn on the LED from the main CPU, and when this command comes, step 3
Steps 3 and 34 input the data and control the lighting. Step S5 monitors whether or not a key has been pressed, and if the key has been pressed, turns on the main power supply and controls the main CP.
Start U.

In step S6, the key press command and LED lighting data are transferred to the main CPU.

Then, in step S7, the LED corresponding to the pressed key lights up.

On the other hand, the main CPU is always activated by the sub CPU as shown in Figure 3 (
As shown in B), initialization is performed in step S8, and in step S9, the last updated information of each mode on the operation panel 31 is read from the RAM 44, and the LED lighting information is sent to the sub CPU 55 via the pass line 56. Forward.

Then, in step 310, a command from the sub CPU 55 is waited for, and if a command arrives, that is, if there is key human power, or if a command is received, the process goes to step 511.
, 312, the LED lighting data is input, and the RA
Store the LED lighting data in M44. If no command is received from the sub CPU, that is, in the case of initialization, the power is turned off.

Command processing such as sending, receiving, key manual registration etc.
Execute at 13 and turn off the main power after command processing is completed.
FL, wait for next command.

In this way, the sub CPU is automatically reset to the same mode as the last set mode.

On the other hand, each time a new mode setting key on the operation panel 31 is pressed, the new mode is transferred to the main CPU 2 as new data, so the latest setting mode can always be reproduced.

Further, since the RAM 44 is backed up by the battery 45, the stored contents are preserved even when the standby power supply 29 is turned off, and the latest mode can always be reproduced.

The timing of turning on and off each power supply is as shown in FIG. 5, and the above-mentioned control operation is performed at the same time as the power of the entire office is turned on, and the operator does not need to set a new mode.

In the above embodiment, the RAM 44 backed up by the battery 45 is used as a means for storing the latest mode of the device. :hG,m
Alternatively, a non-volatile memory such as E2ROM or MVRAM may be used.

As is clear from the above explanation, according to this embodiment, the main CP
The device is configured so that when the main power is turned on, the latest mode of the device stored on the U side is transferred to the sub CPU, and the device is automatically set to the latest mode. The operator can use the facsimile machine immediately without having to reset the mode as in the past.

Note that the present invention is applicable not only to facsimile machines but also to any image forming apparatus having multiple modes.

[Effects] As described above, according to the present invention, it is not necessary to set the mode every time the power is turned on, which is extremely convenient.

[Brief explanation of the drawing]

The figures are for explaining one embodiment of the present invention, and FIG. 1 is a block circuit diagram explaining the overall configuration of the device, FIG. 2 is a block circuit diagram explaining the structure of the operation panel, and FIG. 3 (A) ,
(B) is a flowchart explaining the control operation of the sub CPU and main CPU, FIG. 4 is a plan view of the operation panel, and FIG.
The figure is a timing chart diagram explaining the ON and OFF states of each power source. 2...Main CPU 27...Main power supply 29...
・Standby power supply 31...Operation panel 44...RAM45...
Battery 52...Display unit 55...Sub CPU

Claims (1)

[Claims] Equipped with a memory that always remembers the latest mode of the device,
An image forming apparatus characterized in that the apparatus is configured to automatically set the apparatus to the latest stored mode as soon as the power is turned on.