JPH0453977A - Mode setting device for copy image forming device - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a copy image forming apparatus having a plurality of copy process operation modes, and particularly relates to mode setting immediately after power is turned on.

[Conventional technology]

In a conventional copying machine, the state of the machine is set to the initial state by turning on the power switch (connecting the power supply). In other words,
The number of copies to be copied was set to 1, the copy magnification was set to 100%, automatic paper selection mode, automatic density mode, etc. were set to normal mode, and special modes such as sort/stack and duplex were set to cancel.

In such a copying machine, the power to the machine is connected only by a power switch (power SW) as shown in Figure 9a.
There was a blockage, so there was a jam.

If the front cover of the copier is opened during copying due to paper end, toner end, etc., the power supplied to the machine is still alive, and the power to the machine may be cut off by replenishing supplies, etc. 0 If the front cover of the machine is opened, the relay (R
According to A), the AC power source and the DC24V power source were cut off, but the DC5V power source used in the control system such as the CPU was connected.

However, if such a configuration is adopted, the power is cut off using a relay or the like, which complicates the hardware configuration and increases costs. Furthermore, the DC5V power supply remains active even when the front cover is opened, so safety for the user had to be considered.

Therefore, as shown in Figure 9b, a cover safety SW (door switch) is further inserted between the power supply and the DC power supply.
Even if the power switch is on, when the front cover, etc. is opened, the door switch opens in conjunction with this and cuts off the power supply to the machine, and the above problem occurs when the front cover, etc. is opened. Devices that solve this problem are known.

[Problem to be solved by the invention]

However, when the front cover, etc. of a copying machine configured as shown in FIG.
(initial mode setting in response to power-on).

This allows users to newly select their desired mode.
There is a problem in that the operation is cumbersome because input settings must be made via the operation board.

SUMMARY OF THE INVENTION An object of the present invention is to facilitate the setting of a copying operation mode of a copying machine, particularly the setting of a required mode after the power circuit is turned off in the middle of copying a required number of sheets and then the power is turned on again.

[Means to solve the problem]

The first invention of the present application is a copying apparatus that executes an image copying process in a setting mode, and a main power switch (power 5ill) that supplies and cuts off power to the copying apparatus.

A sub-power switch (cover safety
W) initial mode setting means (210) for setting a predetermined copying process operating mode in the copying machine in response to power-on of the copying machine; and mode input means (13 at Kl-);
), a non-volatile memory means (290) having at least two storage areas (evacuation areas 1, 2); a storage area (evacuation areas 1, 2) of the non-volatile memory means (290); The mode at the time of the previous power-off is retained on one side, and the mode input means (K
input mode setting means (13) for setting a mode in the copying apparatus in response to the input of 13) and retaining the latest mode in the other of the storage areas (saving areas 1 and 2) of the nonvolatile memory means (290); 210) ;Mode return instruction means (KT)
; and, in response to a return instruction from the mode return instruction means (KT), the storage area (
return mode setting means (210) for updating the mode held by one of the evacuation areas 1 and 2) in the copying device;
It is characterized by having the following.

The second invention of the present application is a copying apparatus that executes an image copying process in a setting mode, and a main power switch (power 5ty) that supplies and cuts off power to the copying apparatus.

A sub-power switch (cover safety
W), mode input means (13 at KL-), input mode setting means (13 at KL-) for setting a copying process operation mode in the copying apparatus in response to an input from the mode input means (13 at KL-);
210); and means (210) for generating information for representing the required number of remaining copies, which is the difference between the designated number of copies and the number of copies already made; means (210) for writing information indicative of the latest mode and the latest required number of remaining copies into the non-volatile memory means (290); ), and when the remaining number of copies is 0, a predetermined initial mode is set in the copying machine, and when it is 1 or more, the non-volatile memory means (
The present invention is characterized by comprising: initial mode setting means (210) for setting the mode of (290) in the copying apparatus.

The third invention of the present application is a copying apparatus that executes an image copying process in a setting mode, and a main power switch (power SW) that supplies and cuts off power to the copying apparatus.

A sub-power switch (cover safety
w), mode input means (Kl~13), input mode setting means (13) for setting the copying process operation mode in the copying apparatus in response to an input from the mode input means (Kl~13);
210), and failure detection means for detecting copying device conditions (paper end, toner end, toner overflow, oil end, double-sided tray paper present, ADF original present, paper jam) that may cause problems in copy image formation. (60, 80, 420), the non-volatile memory means (290); the latest mode and failure detection means (60);
゜80.420) means for writing the latest detection information (21
0): In response to power-on of the copying device, the non-volatile memory means (290) is checked for the presence or absence of detected information, and if there is no detection information, the copying device is set to a predetermined initial mode, and if there is, the non-volatile memory is initial mode setting means (210) for setting the mode of the means (290) in the copying device;
; It is characterized by comprising;

Note that symbols in parentheses indicate corresponding elements or corresponding matters in the embodiment shown in one drawing and described later.

[Effect]

According to the first invention of the present application, the setting mode of the copying apparatus when the power supply circuit of the copying apparatus is connected to the power source is set to two storage areas (retreat areas 1 and 2) of the memory means (290).
), and the power supply circuit is separated from the power supply (
power off), this is retained in the memory means (290) during power off.

Then, after the power supply circuit is connected to the power supply (power on), the setting mode (current mode) of the copying machine is written to another storage area, and thus the setting mode ( The previous mode) continues to use the memory means (2
90). When the mode return instructing means (KT) instructs return in this state.

In response to this, the return mode setting means (210) updates the previous mode stored in the nonvolatile memory means (290) to the copying apparatus.

Therefore, when the operator opens the front cover etc. before finishing copying the set number of sheets, and then closes the front cover etc. and attempts to resume copying the remaining copies (remaining number of sheets), the operator uses the mode return instruction means ( Just by inputting the return command (page), the previous mode will be automatically set to the copying machine. In this way, it is extremely easy to set the desired mode after turning on the power again.

According to the second invention of the present application, the setting mode of the copying machine and the number of copies remaining when the power supply circuit of the copying machine is connected to the power supply are written in the memory means (290), and the power supply circuit When the devices are disconnected from the power supply (power off), they are retained in memory means (290) during power off.

Next, when the power supply circuit is connected to the power supply (power on), the setting mode (previous mode) and remaining copy number information before the power is turned on and before the power is turned off are continuously stored in the memory means (290).
) is maintained. In this state, the initial mode setting means (
210) refers to the remaining number of sheets stored in the non-volatile memory means (290), and when it is 0, sets a predetermined initial mode to the copying machine, and when it is 1 or more, the non-volatile memory means (290)
Setting the previous mode of 290) on the copying machine 9 Therefore, if the operator opens the front cover etc. before finishing copying the set number of sheets and then closes the front cover etc.
The copying machine is automatically set to the mode immediately before opening the front cover or the like. In this manner, the required mode is automatically set after the power is turned on again, so that input operations by the operator are omitted.

According to the third invention of the present application, the setting mode of the copying device when the power supply circuit of the copying device is connected to the power source and the failure detection means (60, 80, 420) detecting a problem in copy image formation. A malfunctioning condition of the copying device that can result in a malfunction (paper end, toner end, etc.).

Toner overflow, oil end, double-sided tray paper present, ADFg document present, paper jam) and memory means (2
90), and when the power supply circuit is isolated from the power supply (power off), these are retained in the memory means (290) during power off.

Next, when the power supply circuit is connected to the power supply (power is turned on), the setting mode (previous mode) and detection information before the power is turned on and before the power is turned off are continuously held in the memory means (290). In this state, the initial mode setting means (210
) checks the non-volatile memory means (290) for the presence of detection information, and if there is no detection information, sets the copying device to a predetermined initial mode and detects a malfunction (paper end, toner end, toner overflow, oil end, double-sided When there is detection information indicating that tray paper is present, ADF original is present, and 2-page jam is present, the previous mode of the nonvolatile memory means (290) is set to the copying apparatus.

Therefore, the operator must open the front cover etc. in response to a malfunction (paper end, toner end, toner overflow, oil end, double-sided tray paper present, ADFg document present, paper jam), restore it to a healthy state, and then When the cover or the like is closed, the copying apparatus is automatically set to the mode immediately before the front cover or the like is opened. In this manner, the required mode is automatically set after the power is turned on again, so that input operations by the operator are omitted.

Other objects and features of each invention of the present application will become clear from the following description of embodiments with reference to the drawings.

〔Example〕

FIG. 2 shows one type of copying machine that implements each invention of the present application.
F (Consists of a group of optional units such as an automatic document feeder 60, a sorter 70, an automatic duplex processing unit 80, and paper feed units 170 and 180.The paper feed system that supplies recording sheets has five stages. That is, the first paper feeding system and the second paper feeding system are provided in the main body of the copying apparatus, and include a second paper feeding unit, which is a third paper feeding system, a fourth paper feeding system, and a fifth paper feeding system. A third paper feed unit is connected to the main body of the copying apparatus.

21, 22, 23 and 24 are the 1st paper feed system and the 2nd paper feed system, respectively.
These are cassettes provided in the paper feeding system, the third paper feeding system, and the fourth paper feeding system, and 25 is a tray of the fifth paper feeding system.

A contact glass 1 on which a document is placed is provided at the top of the main body of the copying apparatus. An optical scanning system 30 is provided below the contact glass 1.

The optical scanning system 30 includes an exposure lamp 31. First mirror 32.
Second mirror 33. Third mirror 34. Lens 35. Fourth mirror 36. It is composed of slits 37 and the like.

When reading and scanning a document, the exposure lamp 31 and the first
A first carriage carrying a mirror 32 and a second mirror 33
and a second carriage carrying a third mirror 34,
It is mechanically driven for scanning at a relative speed ratio of :1, and the optical path length is kept constant. The moving direction of the first and second carriages, that is, the sub-scanning direction, is the left-right direction in Fig. 2, and the sub-scanning start position is at the left end.6 The lens 35 is a zoom lens, and is driven by a motor to change the copy magnification. be able to.

The light emitted from the exposure lamp 31 is reflected on the surface of the document.

First mirror 32. Second mirror 33. Third mirror 34, lens 35. Through the fourth mirror 36 and the slit 37,
An image is formed on the photosensitive drum 2.

Around the photosensitive drum 2, there are a main charger 3, an eraser 4. Developing cartridge 5. A pre-transfer static elimination lamp 6, a transfer charger 7, a separation charger 8, a ticking unit 9, etc. are arranged.

Briefly explain the copy process.

The photosensitive drum 2 rotates in the direction shown by the arrow in the figure.

When the surface passes directly under the main charger 3, it is uniformly charged to a predetermined high potential by the discharge, and when it passes directly under the eraser 4, the charge on the portion not used for copying is erased. When the charged surface of the photosensitive drum 2 is irradiated with reflected light from the original, the potential of that portion changes (exposure neutralization) depending on the intensity of the irradiated light.

Since the optical scanning system 30 sequentially scans the document surface in synchronization with the surface speed of the photoconductor drum 2, the surface of the photoconductor drum 2 has a potential distribution according to the density (light reflectance) distribution of the document image,
That is, an electrostatic latent image is formed.

When the part on which the electrostatic latent image is formed passes near the developer cartridge 5, the toner in the developer cartridge 5 is electrostatically attracted to the surface of the photoreceptor 2 according to the potential distribution, and the toner is absorbed in the vicinity of the developer cartridge 5 according to the electrostatic latent image. A visual image is formed on the photoreceptor drum 2 (development).

On the other hand, in synchronization with the progress of the copying process, recording sheets are supplied from one of the five paper feeding systems selected. This recording sheet is fed through the registration roller 27 at a predetermined timing so as to overlap the surface of the photoreceptor drum 2, and is transferred to the photoreceptor drum 2 by the transfer charger 7.
The upper visible image (toner image) is transferred, and the recording sheet to which the visible image is transferred is further separated from the photoreceptor drum 2 by a separation charger 8. The separated recording sheet is fixed by a conveyor belt 11. It is transported to the container 12. After passing through the fixing device 12, the toner image on the recording sheet passes through the fixing device 12.
The recording sheet that has been fixed on the recording sheet by the internal heat passes through a predetermined paper ejection path and is transferred to a sorter 70.
Alternatively, the paper is discharged to the automatic duplex unit 80.

FIG. 3 shows an outline of the electric circuit configuration of the copying machine shown in FIG. 2.

The main control board 200 includes a microprocessor 21O9
Read/write memory (-IJ (ROM) 220° read/write memory (RAM) 230. Parallel I10 board 240
．． Serial I/○ port 250, A/D converter 26
09 interrupt controller 2701 is equipped with a timer 280 having a clock function and a calendar function, a nonvolatile read/write memory 290, and the like. (Recently, there are CPUs in which most of the above components are housed in one chip.) This control board 200 includes an operation board 310. Optical system control board 320. AC system control board 325 for controlling the lamp control board 330 and the heater control board 340.
High voltage power supply unit 350° automatic document feeder 60. Sorter 709 duplex unit 80. Paper feed unit 360. Drivers 370 and 380, a signal processing circuit 390, and the like are connected.

The operation board 310 is a key for specifying the operation mode of the copying machine, the operation mode, and the number of copies.

In addition, there are display elements that display machine abnormalities, jams, etc., and have the functions necessary for the operator to operate the machine.

The optical system control board 320 includes a scanning drive motor M1 of the optical scanning system 30 and a stepping motor M2 for driving when adjusting the magnification of the lens 35 and the second carriage.
．． Control M3.

The AC system control board 325 includes a lamp control board 330,
The light amount of the exposure lamp 31 of the optical scanning system 30 is controlled through the heater control board 340, and the fixing heater HTI provided in the fixing device 12 and the drum heater HT2 built in the photosensitive drum 2 are controlled.

The high voltage power supply unit 350 includes the main charger 3, the bias electrode 5a of the developer cartridge 5, and the transfer charger 7.
and generates high voltage power to be applied to each of the separate chargers 8.

Various AC loads 400 are connected to the driver 370 , various DC loads 410 are connected to the driver 380 , and various sensors 420 are connected to the signal processing circuit 390 .

Specifically, typical AC loads 400 include a main motor for driving the photoreceptor drum 2 and the like, a motor for the developer cartridge 5, a conveyance fan motor, a cooling fan motor, and the like. Typical examples of the various DC loads 410 include a solenoid for controlling a cleaning blade, a clutch for controlling a registration roller, and a clutch for controlling a paper feeding roller.

Separation claw control solenoid, eraser 4. These include a total counter and a toner replenishment control solenoid.

Furthermore, typical sensors 420 include a timing pulse generator that generates pulses synchronized with the rotation of the main motor, a toner image sensor PSEN, a toner color sensor C3EN, and a sensor that detects recording paper near the registration roller 27. These include a registration sensor, a paper size sensor, a paper presence/absence sensor, etc. provided in each paper feed system.

Figure 3 shows the "control board" and rAC shown in Figure 9b.
It shows the electrical circuit elements of the control board. That is, the above-described copying machine has a power supply connection mode shown in FIG. 9b.

FIG. 4 shows an operation board 310 provided in the copying machine of FIG.
Shows the appearance. Referring to FIG. 4, the operation board 310
, press the sorter mode key Kl.

2, K3 on the ADF mode key. 4a on the binding margin adjustment key,
4b, copy magnification adjustment key 5. 6a, K6b, 9a, 9b, 9c, duplex mode key 7. 8 on the original size selection key. Transfer paper selection key Kll, density adjustment key 12a, 12b, numeric keypad 10. Clear stop key KG, print start key KS, interrupt key KI
, a large number of keys including a mode clear key 13 and a mode return key KT to be described later, and various indicators DI.

D2. D3. Equipped with D4 and D5.

Next, FIGS. 1a and 1b show the control functions of the first embodiment of the microprocessor 210 on the main control board 200 in FIG. 3. First, a brief explanation of the contents of various symbols shown in FIG. Explain.

Ccopy: copy number counter Count the number of completed copy processes do. The set number of copy processes are completed. When completed, it is cleared to 0.

N5et: Copy number setting value register The number of copies per one document is set. This number is specified using the numeric keypad KIO.

NK: Numeric keypad manual register Decimal input from numeric keypad KIO Holds a numeric value.

The operation of the microphone processor 210 will be explained with reference to FIG. ).

In this process, the state of the main control board 200 itself is initialized. That is, the contents of the read/write memory 230 are cleared, various mode settings are initialized, and the output ports are reset.

Next, check the evacuation area flag FL for controlling the evacuation area (SA2), and if the evacuation area flag FL is 1, set it to 0 (5A3), and if the evacuation area flag FL is 0, set it to 1 (SA4). ), the evacuation area is an area where the machine status (setting mode, copy conditions, etc.) is always stored in the non-volatile memory 290, as shown in Figure 5. The state from the previous time is memorized.

Next, initial settings of the machine are performed (SA5). In this process, the states (operation modes) of various boards and devices connected to the main control board 200 are initialized to set the copying machine to its initial state.

It also sets the mode and count value of the timer 270.

Furthermore, as shown in FIG. 3, a main control board 200 and an operation board 310. The process of starting serial communication and the process of transmitting initial data between the three boards, optical system control board 320 and AC system control board 325, are also performed in step SA5. For example, the main control board 20
0 to the optical system control board 320 is the serial T shown in Figure 3.
In xD (main → optical), lens correction data is sent when the power is turned on.

Next, standby mode processing is performed (SA6). At this point, no copying operation is being performed, so the machine is stopped and in a standby state. In the standby state, first, the states of signals applied to various input ports are read and the results are stored in the memory 230.

Next, the data group for output control stored in the memory 230 in advance is outputted to the output port associated with each data, and the device connected to the output port is controlled.

Furthermore, the status of various input ports stored in the nonvolatile memory 290 that has been read in advance is determined to check for abnormalities. If there is an abnormality, predetermined abnormality processing is performed depending on the content of the abnormality. For example, when it is detected that there is no paper or silicone oil for toner use, the display on the operation board 310 displays a paper end display, a toner end display, an oil end display, a message (guidance) prompting for replenishment, etc. or display it on

In addition, if an abnormality that requires repair by a service person, such as a blown fuser temperature fuse or a blown exposure lamp, occurs, a display indicating the details of the abnormality and prompting the operator to call the service person will be displayed on the operation board as shown in Figure 4. to be displayed. These display data are sent from main control board 200 to operation board 310 by serial communication.

If there is no abnormality, determine the status of other input ports and process. 1 For example, process the input from the operation board 310 (Figure 3) (input data from the operation board 310 is also sent to the main control board via serial communication. 200). In this processing, the states of various mode selection switches (FIG. 4) provided in the operation board 310 are determined, and subsequent processing is determined according to the results.

Next, it is determined whether there is key human power or not, and if there is key human power, processing is performed in accordance with that key human power. For example, in the normal operation mode, if a number from 10 is entered on the numeric keypad, the numerical value associated with the pressed key is stored in the copy number register.

Further, when there is an input from the 1 magnification adjustment key 6a, 6b, etc., the magnification change data is sent to the optical system control board 320.

Further, the display data stored in the memories 230 and 290 in advance is output to the operation board 310 using serial communication at a predetermined timing, and the data is transferred to the operation board 310.
Display on the display above 0.

The data to be displayed is switched to a display state for each destination depending on the state of the mode switch. For example, by the microprocessor 210 in the operation board,
The set value of the number of copies is displayed on the display D1, and the copy magnification is displayed on the 1 display D4.

Next, it is determined whether a mode return signal has been input (SA7). When the mode return signal is input,
Depending on whether the save area flag FL is 1 or 0, information is retrieved from the save area that stores the mode before the power was turned off, and the mode is restored. Evacuation area flag FL
If is 1, the mode is set using the data in area 2 shown in FIG. 5 (SA9), and the evacuation area flag FL is set to O.
If so, the mode is set using the data in area 1 shown in FIG. 5 (SAIO). FIG. Depending on whether 0 or 1, non-volatile memory 2
It is determined whether the data should be stored in evacuation area 1 or evacuation area 2 of 90, and the data is evacuated.

Although the process shown in Figure 5 is not shown in the machine schematic operation flow diagrams in Figures 1a and 1b, it is a process that is always performed, and the latest machine status and mode are stored. There is.

Further, FIG. 6 shows an example of memory mapping of the nonvolatile memory 290.

Returning again to FIG. 1a. The mode return signal is generated by pressing the mode return key KT shown in FIG. In addition, in the case of a machine that does not have a mode return key, the mode return signal may be generated by pressing two or more keys at the same time (for example, pressing 'C on the clear key and # on the # key at the same time). etc.).

If the state is not copyable at step 5 AIL.

Alternatively, if the print start key KS is not turned on in step 5A12, the above-mentioned standby mode processing (SA6) and mode return signal determination (SA7).

Repeat the mode setting (SA8-5AIO).

Copying may not be possible if, for example, the fusing temperature is outside the predetermined range or the paper is at the end.

Supply status such as toner end, oil end, etc.
This is a case where some abnormality is detected.

See Figure 1b. Print key K in copy enabled state
When S is pressed, pre-copy mode processing is executed (SA1
3). In this processing, as processing immediately before starting the copying process, driving of the main motor is started, pre-copying cleaning processing of the photosensitive drum 2, etc. are performed. Numeric keypad K
The number of copies (NK) input in advance in IO is stored in the number of copies set value register N set.

Also, at this time, interrupt mask release data is sent from the main control board 200 to the optical system control board 320 via serial communication. This is because the timing-related communication between the main control board 200 and the optical system control board 320 during the copy operation is performed using an interrupt signal, so it is necessary to enable or disable the interrupt signal. This is because it is performed using serial communication data. In other words, during copying, the interrupt signal is enabled and timing signals necessary for the copying operation are exchanged, and during standby, the timing signal from the interrupt signal is not required, so the interrupt is masked.

When the pre-copy mode processing is completed, copy mode processing is executed (SA14). At this point, the copy process is actually executed. This processing includes copy process processing 9 paper transport processing and toner replenishment processing.

This includes abnormality check processing, etc.

In the copy process, each process element, machine operation element, paper feeding element, etc. is controlled on/off at a predetermined timing synchronized with the output of a timing pulse generator that generates a pulse corresponding to the amount of rotation of the main motor. Furthermore, if a scanner start signal is sent as an interrupt signal to the optical system control board 320 at a predetermined timing, when the exposure lamp reaches the image leading edge position, the E (lead edge) signal is sent from the optical system control board 320 to the main control board 200 and an E (lead edge) signal is sent as an interrupt signal. It comes back as a signal. The main control board 200 corrects the value of the timing pulse to a certain constant value (1928 in this embodiment) at the time it receives the E signal.

This pulse correction is performed in order to correctly align the image on the photosensitive drum with the transfer paper fed from the paper feed port.

In other words, when the L and E signals are received, the image of the leading edge of the document has just been formed on the photoreceptor drum.
The distance to the transfer position where the position meets the leading edge of the paper can be calculated. If this is done, the distance from the registration roller to the transfer position of the paper is also constant, so the registration start timing can be calculated from the timing E.

In this embodiment, when the L and E signals come at 1928 pulses and the registration start is set at 2000 pulses, one image is transferred exactly at the leading edge of the paper.

If an abnormality, jam, etc. occurs during the copy mode processing (SA14), the process shifts to abnormality/jam processing (SA15).

If there is no abnormality or jam, copy mode processing (SA14) is repeatedly executed until one cycle of copying process is completed, and when it is completed (SA16), the copy number counter Ccopy is incremented (+1) L (SA
I7), use the result as the copy number setting value, and register Nse.
Compare with the contents of the file (SA 18), Ccopy
= If it is not N5et, copy mode processing (SA1
Proceed to step 4) to start the next copying operation.

When Ccopy = N set, that is, when the copy mode processing (SA14) is completed for the final copy, the contents of the counter Ccopy are cleared (5A19) and post-copy mode processing is executed (SA20). In this process, the paper on which the copy image has been transferred is ejected.

Post-copy cleaning processing and the like of the photosensitive drum 2 are performed.

When the paper discharge is completed (SA21), the process returns to the standby mode process (5A6 in FIG. 1a) and repeats the above process.

In the abnormality/jam processing in step SA22, all driving loads of the machine are turned off to stop the operation, and the reason is displayed on the display section of the operation section.

If there is a jam, the jam is displayed and the jam location is displayed, and if there is a machine abnormality, the details are displayed.

Status information and mode information including abnormalities, jams, etc. are written in area 1 shown in FIG. 6 if the save area flag FL is 1, and in area 2 if FL is 0.

In the machine implementing the present invention, if an abnormality or jam occurs, the abnormality or jam cannot be cleared unless the power of the machine is turned off. will be held.

Therefore, the power to the machine is turned off by opening the front cover, etc., the power to the machine is turned on by closing the front cover, etc. after the abnormality or jam is cleared, and when the operator presses the mode return key KT (see Fig. 1a). Step 5A of
7) Retrieve information from the evacuation area of the one that remembers the mode before the power was turned off and restore the mode;
Further, unless the operator presses the mode return key KT, the state of one machine is set to the initial state.

Next, a second embodiment of the present invention will be described. In the second example,
The contents of the processing of the microprocessor 210 shown in FIGS. 1a and 1b of the first embodiment described above are changed to those shown in FIGS. 7a and 7b. The rest is the same as the first embodiment described above.

The processing of this second embodiment will be explained with reference to FIGS. 7a and 7b. Note that the details of processes similar to those shown in FIGS. 1a and 1b will be omitted.

As shown in FIG. 7a, when the power is turned on, CPU initialization processing is first performed (step SB1: hereinafter, the word step is omitted in parentheses, and only its No. is written). This process is similar to the content of (SAI) in FIG. 1a.

Next, the evacuation area flag FL for controlling the evacuation area is checked and the evacuation area flag FL is set to 1 or O (SB2 to SB4: 5 in Figure 1a).
A2-5Same as A4).

Next, the contents of the copy number counter Ccopy stored in the nonvolatile memory 290 are checked (SB5).
. If the content of the copy number counter Ccopy is 0, all the set copies will have been completed by the time the power is cut off, so normal initialization processing will be performed (SB6: SA5 in Figure 1a. Content is 0
If not, it is determined that the power was cut off before all the copies that were set were completed when the power was turned off, and the mode before the power was turned off is determined depending on whether the evacuation area flag FL is 1 or 0. Extract the information from the evacuation area that stores the information and return to the mode (SC7 to S09
: 5A8-8AI O in Figure 1a).

Next, standby mode processing is performed (SBIO: 5 in Figure 1a).
A6). After the standby mode ends, if the copying is not possible in step 5Bll or if the print start key KS is not turned on in step 5B12, the standby mode process (SBIO) is repeatedly executed.

See Figure 7b. Print key K in copy enabled state
When S is pressed, pre-copy mode processing is executed (SB1
3: 5A13 in Figure 1b).

Hereinafter, the processes from steps 5B14 to 5B22 shown in FIG. 7b are performed by steps 5A14 to SA22 shown in FIG. 1b.
Since the contents of the processing up to this point are the same, the explanation will be omitted.

In the second embodiment described above, the number of copies set when the machine is turned off is compared with the number of copies that have been completed, and if the set number of copies has been completed, the machine is initialized when the power is turned on ( SB6), if copying for the set number of sheets has not been completed, the mode is controlled to be reset to the mode when the power was turned off (SB7 to 5B9).

Next, a third embodiment of the present invention will be described. In the third embodiment,
The contents of the processing of the microprocessor 210 shown in FIGS. 1a and 1b of the first embodiment described above are changed to those shown in FIGS. 8a and 8b. The rest is the same as the first embodiment described above.

The processing of this third embodiment will be explained with reference to FIGS. 8a and 8b. Note that the details of processes similar to those shown in FIGS. 1a and ib will be omitted.

From Figure 8a, when the power is turned on, the CPU initialization process is performed first (in step SC, the word step is omitted in parentheses below and only its number is written).
, this process is similar to the content of (SAI) in FIG. 1a.

Next, the evacuation area flag FL for controlling the evacuation area is checked and the evacuation area flag FL is set to 1 or 0 (SC2 to SC4: S in Fig. 1a).
Same as A2 to SA4).

Next, the paper end flag F1. which is stored in the non-volatile memory 290. Toner end flag F2, toner overflow flag F3. Oil end flag F4. Double-sided tray paper present flag F5. ADF original presence flag F6. Check the jam flag FG (SC5a”sc5g),
If flags F1 to F6 and FG are 0, normal initialization processing is performed (SC6: 5A5 in FIG. 1a), and flags F1 to F6. If any flag in FG is set to 1, it is determined that the power was turned off because the front cover was opened for some reason, and the evacuation area flag FL is set to 1. 0, information is retrieved from the evacuation area that stores the mode before the power was turned off and the mode is restored (SC7 to S09: 1st
SA8-5AIO in figure a).

Next, standby mode processing is performed (SCIO: 5 in Figure 1a).
A6) After the standby mode ends, if the state is not ready for copying in step 5C1l, or if the print start key KS is not turned on in step 5C12, the above standby mode processing (SCIO) is repeatedly executed.

See Figure 8b. Print key K in copy enabled state
When S is pressed, 5C13 executes pre-copy mode processing.
: 5A13 in FIG. 1b), and when it is finished, execute copy mode processing (SC14: 5A14 in FIG. 1b),
At this point, the copy process is actually executed.

If an abnormality, jam, etc. occurs during copy mode processing (SC14), the process shifts to abnormality/jam processing (set5).

Also, every time one cycle of the copy process ends, the interrupt flag FS for interrupting the copy is checked (
SC5T), if the interruption flag FS is set to 1, the process shifts to post-copying mode processing (SC20: 5A20 in Figure tb) even if the set number of copies have not been completed. The interruption flag FS is set when the clear stop key KG is pressed or when paper end, toner end, toner overflow, oil end, document jam in the ADF, etc. occur.

If the interruption flag FS is not set to 1 in step 5C3T, the copy number counter Ccopy is incremented (+1) L (SCI 7: 5A1 in Fig. 1b).
7), compare the result with the contents of the copy number setting value register N5et (SC18: S A 18 in FIG. 1b)
), if Ccopy=N5et, the process again proceeds to copy mode processing (SC14) and starts the next copying operation.

When Ccopy = N set, that is, when the copy mode processing (SC14) is completed for the final copy, the contents of the counter Ccopy are cleared. 5C19: 1st
5A19 in Figure b), execute post-copy mode processing (SC
20: 5A20 in Figure 1b).

When the paper ejection is completed (SC21: 5A21 in Fig. 1b),
Returning to the standby mode process (5CIO in FIG. 8a), the above process is repeated.

In the abnormality/jam processing in step 5C22, all driving loads of the machine are turned off to stop the operation, and the reason is displayed on the display section of the operation section.

If there is a jam, the jam will be displayed and the jam location will be displayed, and if there is a machine abnormality, the details will be displayed.

Status information and mode information including abnormalities, jams, etc. are written in area 1 shown in FIG. 6 if the save area flag FL is 1, and in area 2 if FL is 0.

If it is the paper end, set the flag Fl to 1 (5C23a, 5C24a), and if the toner end, set the flag F2 to 1 (5C23b, 5C).
24b), )-ner overflow, flag F3
Set to 1 (5c23c, 5C24c), and if the oil is at the end, set flag F4 to 1 (5C23d).
, 5C24d), if there is paper in the duplex tray, flag F
Set 5 to 1 (5C23e, 5C24e), document feeder! If the original is set in (ADF), flag F6 should be set to 1 5C23f, 5C2
4f), if there is a jam, the flag FG is set to 1 (SC23g, SC24g).

If an error or jam occurs, the error or jam cannot be cleared unless the machine power is turned off.
Jam processing (SC22), flag setting (SC23a=
After performing steps (sc23g, SC24a to SC24g), the state is held as it is.

In the third embodiment described above, if one of the specific pieces of information is set in the flag (S C5a - S C5g) due to machine abnormality, jam occurrence, etc., it is stored in the non-volatile memory 290. The machine is controlled to return to the mode before the power was turned off (SC7-5C9), and if none of the specific information is set in the flag, the machine is initialized (SC6).

As mentioned above, in any of the first to third embodiments,
After the power is turned off, it is possible to return to the mode before the power was turned off.

〔Effect of the invention〕

As described above, according to the first invention of the present application, the operator opens the front cover etc. before finishing copying the set number of sheets.
After that, when closing the front cover etc. and attempting to resume copying the remaining copies (remaining number of sheets), the operator simply inputs a return command using the mode return instruction means (KT), and the previous mode is automatically set to the copying machine. be done. In this way, it is extremely easy to set the desired mode after turning on the power again.

According to the second invention, when the operator opens the front cover etc. before finishing copying the set number of sheets and then closes the front cover etc., the copying machine automatically changes the mode immediately before opening the front cover etc. Set.

In this manner, the required mode is automatically set after the power is turned on again, so that input operations by the operator are omitted.

According to the third invention, the operator opens the front cover etc. in response to a malfunction (paper end, toner end, toner overflow, oil end, double-sided tray paper present, ADF document present, paper jam), and then When the state is restored and the front cover etc. are then closed, the copying machine is automatically set to the mode immediately before the front cover etc. was opened. In this manner, the required mode is automatically set after the power is turned on again, so that input operations by the operator are omitted.

[Brief explanation of drawings]

1a and 1b show a microprocessor 2 of a first embodiment of a mode setting device for a copying image forming apparatus according to the present invention.
90 is a flowchart showing the control operation of step 90. FIG. 2 is a block diagram mainly showing the structure of the mechanical parts of a copying machine that is an embodiment of the present invention.6 FIG. 3 is a block diagram showing the structure of the electrical system of the copying machine shown in FIG. It is. 4 is a plan view of the operation board of the copying machine shown in FIG. 2. 6. FIG. 5 is a plan view of the operation board of the copying machine shown in FIG. 3 is a flowchart showing processing. FIG. 6 is a memory map showing the allocation of storage areas in the nonvolatile memory 290 shown in FIG. 7a@ and 7b[ are flowcharts showing differences in control operations of the microprocessor 290 of the second embodiment of the present invention from those of the first embodiment. FIGS. 8a and 8b are flowcharts showing how the control operation of the microprocessor 290 in the third embodiment of the present invention differs from that in the first embodiment. FIG. 9a is a block diagram showing the control system and power supply connections of a conventional copying machine. FIG. 9b is a block diagram showing the connection between the control system and power supply of another conventional copying machine. 1: Contact glass 3: Main charger 5: Developing cartridge 7: Transfer charger 9: Cleaning unit 30: Optical scanning system 32 to 34, 36: Mirror 37: Slit 70: Sorter 210: Microprocessor (initial mode setting means, input mode Setting means. Return mode setting means) 290: Non-volatile memory (non-volatile memory means) 420
: Various sensors 2: Photosensitive drum 4: Eraser 6: Pre-transfer static elimination lamp 8: Separation chargers 21 to 25: Paper feed cassette 31: Exposure lamp 35: Lens 60 Automatic document feeder 80: Automatic duplex unit (60, 80 , 420: failure detection means) KT = mode return key (mode return instruction means) (13 to Kl-: mode input means) (power Sv: main power switch) (cover safety Sv: auxiliary power switch) protection area 1, 2: Storage area) Door 5 Diagram 6 Diagram 9a Diagram Procedural Correction Security Type) % Formula % 1. Incident Display 1990 Patent Application No. 164661 2
, Name of the invention Mode setting device for copying image forming apparatus 3, Relationship with the case of the person making the amendment Patent applicant address 1-3-6 Nakamagome, Ota-ku, Tokyo Name Name
(674) Ricoh Co., Ltd. Representative Hama 1) Hiro 4, Agent address 4th floor, Showa Building, 2-27-6 Higashi Nihonbashi, Chuo-ku, Tokyo - Name Patent attorney (7696) Kosuke Sugisu 2. 5. Date of amendment order: September 10, 1990 (shipment date: September 25 of the same year) 6
, Target of correction Figure 7, Contents of correction

Claims (3)

[Claims] (1) A copying device that executes the image copying process in the setting mode, a main power switch that supplies and cuts off power to the copying device, and a main power switch that supplies power to the copying device in conjunction with closing and opening the cover of the copying device; A copying image forming apparatus comprising: a sub-power switch for shutting off the power; initial mode setting means for setting a predetermined copying process operation mode in the copying apparatus in response to power-on of the copying apparatus; and mode input means: at least two non-volatile memory means having two storage areas; a mode at the time of the previous power cut-off is held in one of the storage areas of the non-volatile memory means; a mode is set in the copying apparatus in response to an input from the mode input means; input mode setting means for maintaining the latest mode in the other storage area of the nonvolatile memory means; mode return instruction means; and, in response to a return instruction from the mode return instruction means, said one of the storage areas of the nonvolatile memory means A mode setting device for a copying image forming apparatus, comprising: a return mode setting means for updating and setting a mode held by the copying apparatus in the copying apparatus. (2) a copying device that executes the image copying process in the setting mode, a main power switch that supplies and cuts off power to the copying device, a supply of power to the copying device in conjunction with closing and opening of the cover of the copying device; an auxiliary power switch for shutting off, a mode input means, an input mode setting means for setting a copying process operation mode in the copying apparatus in response to an input from the mode input means, and a required number of copies, which is the difference between the specified number of copies and the number of copies already made. A copying image forming apparatus comprising means for generating information representing the number of remaining copies, non-volatile memory means; information representing the latest mode and the latest required number of remaining copies is written in the non-volatile memory means. and means for setting the copying apparatus to a predetermined initial mode by referring to information representing the required number of remaining copies in the nonvolatile memory means when the number of remaining copies is 0 in response to power-on of the copying apparatus; , initial mode setting means for setting the mode of the non-volatile memory means in the copying apparatus when the number is 1 or more. (3) a copying device that executes the image copying process in the setting mode, a main power switch that supplies and cuts off power to the copying device, a supply of power to the copying device in conjunction with closing and opening of the cover of the copying device; A sub-power switch for shutting off, a mode input means, an input mode setting means for setting a copying process operation mode in the copying device in response to an input from the mode inputting means, and a copying device that may cause problems in copy image formation. A copying image forming apparatus comprising: a non-volatile memory means; means for writing the latest mode and the latest detection information of the failure detecting means into the non-volatile memory means; and In response to power-on of the apparatus, the presence or absence of the detected information in the non-volatile memory means is checked, and if there is no such information, a predetermined initial mode is set in the copying apparatus, and if there is, the mode of the non-volatile memory means is set in the copying apparatus. A mode setting device for a copying image forming apparatus, comprising: initial mode setting means for setting an initial mode.