JPH06214443A - Copying machine with resuming function - Google Patents

Abstract

PURPOSE:To provide a copying machine which is friendly to a user and to improve overall copying efficiency by setting a resuming function or a standard mode which can be made to comply with the various desires or the user and simplifying complicated mode setting work. CONSTITUTION:A non-volatile RAM 703 storing at least one or more present mode states, a ROM 702 storing the standard set of at least one or more action modes and a CPU 701 setting the mode based on the content of the ROM 702 when the action mode is set to the standard mode in a lump (mode clearing, automatic clearing, automatic shut-off or the like) and setting the mode based on the content of the RAM 703 when a power source is turned on are provided.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION The present invention, when the power is turned on,
The present invention relates to a copying machine having a resume function for returning to a mode before being turned off, including those having a standard mode setting.

[0002]

2. Description of the Related Art In recent years, copiers have become more multifunctional, and for example, selection of recording paper, magnification in variable magnification mode, double-sided in double-sided mode → single-sided, double-sided → double-sided, moving amount in moving mode, erasing mode Many copy operation modes such as erase area are selectable. As users become more multifunctional,
A complicated mode setting operation is performed according to each copying process. Moreover, in a general copying machine, the power source is turned off when an abnormality occurs.
If it is turned on again, it will not recover from the abnormal state unless it is turned on again. When multiple users share one copying machine, they are away from the copying machine and other users turn off the power. Power off when unexpected
I was sometimes told. Conventionally, in such a case, if the power supply is turned off, there is a disadvantage that the copy operation mode that has been set carefully must be reset from the beginning.

On the other hand, in the case where a plurality of users share one copying machine, the user who wants to copy in the standard mode may make a mistake without noticing the mode set by the user who was previously using it. If the user does not operate the operation unit for a predetermined time in some cases, the automatic clear function that automatically returns to the standard mode is provided.

Further, in recent copying machines, the standard mode can be switched individually according to the preference of the user. For example, there are recording paper size (paper feed position), buzzer sound setting, automatic paper selection function setting, and the like. On the other hand, some standard modes are always fixed. In the general standard mode, magnification, deletion, movement, etc. are 100
%, No erasure, no move.

As a reference technical document related to the above-mentioned conventional example, there is "a power saving control method for an electronic copying machine" disclosed in Japanese Patent Laid-Open No. 221854/1983. This is to store the original state even when the original state is required to be stored, for example, even when the power saving mode is switched to during an interrupt or when a jam occurs.

[0006]

However, in the conventional copying machine as shown above, it is not possible to properly deal with various mode setting cases required by the user, and the operation is not possible. There is a problem that it causes deterioration of sex. In other words, when the power is turned on, it is possible to optimally select the resume function to return to the mode before turning off, including the one with the standard mode setting, or the function to return to the standard mode in the case of auto clear or the like. could not. With a device with a resume function, when the power was turned off and then turned on again, it was not possible to meet the demand for the standard mode. When the resume function is set in the service mode, etc., and the ON / OFF state of the setting is displayed on the operation unit at that time, the resume function may not work even though the resume function is ON. Conceivable. A user who turns on the setting of the resume function may be a user who frequently uses a complicated and constant operation mode and prefers that the previous setting remains as it is even when the power is turned off. In this case, the auto clear function setting is O
If it is N, the standard mode is set after a predetermined time, and the mode becomes unintended. When a user who frequently uses the resume function and a user who does not use the resume function share one copier, the user who does not use the resume function turns off the resume function.
After that, when a user who frequently uses the resume function tries to copy a previously used setting in a complicated mode, the mode setting must be performed again from the beginning. If the resume function is simply realized, the mode before the power is turned off is set regardless of the standard mode setting, and thus the function of individually switching the standard mode according to the user's preference becomes useless. When the resume function operates, the standard mode that can be changed according to preference is also in the state before the power is turned off.
Depending on the user, those whose standard mode cannot be changed may retain the value, but those who can set the standard mode are required to have the value set in the standard mode, and this cannot be handled. Power OFF in a copier equipped with resume function
If the non-volatile memory storing the previous mode is turned on in an abnormal state, the abnormal mode is set and the desired copy mode cannot be obtained.

The present invention has been made in view of the above circumstances, and simplifies the complicated mode setting work by enabling the resume function and standard mode setting capable of responding to various preferences of the user. The purpose is to provide a user-friendly copying machine and improve the overall copying efficiency.

[0008]

In order to achieve the above object, the present invention provides a nonvolatile first storage means for storing at least one or more current mode states and at least one or more operation modes. Non-volatile second to store standard settings
When the memory means and the operation mode are collectively set to the standard mode (mode clear, auto clear, auto shut off, etc.), the mode setting is executed based on the contents of the second memory means, and when the power is turned on, the first mode is set. The present invention provides a copying machine with a resume function, including a control means for executing mode setting based on the contents of a storage means.

Further, a non-volatile first storage means for storing at least one or more current mode states, and at least one
Non-volatile second storage means for storing standard settings of one or more operation modes, and the contents of the second storage means when collectively setting the operation mode to the standard mode (mode clear, auto clear, auto shut off, etc.) A first mode setting for executing the mode setting based on the contents of the first storage means when the power is turned on;
Resume function including a control means for selecting one of two modes of the second mode setting for executing the mode setting based on the contents of the second storage means and executing the mode setting based on the selected mode. It is intended to provide a copier with a copy.

Further, a non-volatile first storage means for storing at least one or more current mode states, and at least one
Input means for inputting the settings at the time of standard setting of one or more operation modes, and a non-volatile second for storing the input initial settings
A storage means, an auto clear means for automatically clearing the operation mode to the standard mode after a predetermined time, and a collective setting of the operation mode to the standard mode (mode clear, auto clear, auto shut off, etc.) The mode is set based on the contents, and when the power is turned on,
One of two modes is selected, a first mode setting for executing the mode setting based on the contents of the first storage means and a second mode setting for executing the mode setting based on the contents of the second storage means. The present invention provides a copying machine with a resume function, which includes a control means for executing the mode setting based on the contents of the second storage means when the mode setting is executed and the auto clear means is turned on. .

Also, a non-volatile first storage means for storing at least one or more current mode states, and at least one
Input means for inputting the settings at the time of standard setting of one or more operation modes, and a non-volatile second for storing the input initial settings
A storage means, an auto clear means for automatically clearing the operation mode to the standard mode after a predetermined time, and a collective setting of the operation mode to the standard mode (mode clear, auto clear, auto shut off, etc.) The mode is set based on the contents, and when the power is turned on,
One of two modes is selected, a first mode setting for executing the mode setting based on the contents of the first storage means and a second mode setting for executing the mode setting based on the contents of the second storage means. The present invention provides a copying machine with a resume function, which comprises a control means for setting a mode in which automatic clearing is not performed when the mode setting is performed and the first mode setting is selected.

Further, a nonvolatile first storage means for storing at least one or more current mode states, and at least one
Non-volatile second storage means for storing standard settings of one or more operation modes, and the contents of the second storage means when collectively setting the operation mode to the standard mode (mode clear, auto clear, auto shut off, etc.) A first mode setting for executing the mode setting based on the contents of the first storage means when the power is turned on;
One of two modes of the second mode setting for executing the mode setting based on the contents of the second storage means is selected, and rewriting of the first storage means is prohibited while the second mode setting is selected. , The first mode when the first mode setting is selected
The present invention provides a copying machine with a resume function, including a control means for executing mode setting based on the contents of a storage means.

Further, a non-volatile first storage means for storing at least one or more current mode states, and at least one
Input means for inputting the settings at the time of standard setting of one or more operation modes, and a non-volatile second for storing the input initial settings
When the memory means and the operation mode are collectively set to the standard mode (mode clear, auto clear, auto shut off, etc.), the mode setting is executed based on the contents of the second memory means, and when the power is turned on, the first mode is set. Of the contents of the storage means, only those not included in the second storage means,
A copying machine with a resume function is provided, which comprises a control means for executing mode setting based on the contents of the first storage means, and a mode setting based on the contents of the second storage means otherwise. is there.

Also, a non-volatile first storage means for storing at least one or more current mode states, and at least one
Input means for inputting the settings at the time of standard setting of one or more operation modes, and a non-volatile second for storing the input initial settings
When collectively setting the storage means and the operation mode to the standard mode (mode clear, auto clear, auto shut off, etc.), the mode setting is executed based on the contents of the second storage means, and all of the first storage means. The first mode setting for executing the mode setting based on the contents of the first storage means and the mode setting based on the contents of the first storage means only for the contents of the first storage means that are not included in the second storage means. Select any one of the two mode settings of the second mode setting, which is executed and otherwise executes the mode setting based on the contents of the second storage means. When the power is turned on, the mode is set based on the selected mode setting. The present invention provides a copier with a resume function, which includes a control unit that executes setting.

Further, a nonvolatile first storage means for storing at least one or more current mode states, and at least one
A second non-volatile storage means for storing standard settings of one or more operation modes and an abnormality of the first storage means are detected, and when the first storage means has an abnormality when the power is turned on, the second storage means is detected. Resume comprising control means for executing mode setting based on the contents of the storage means, and executing the mode setting based on the contents of the first storage means when the first storage means is judged to be normal when the power is turned on. It provides a copying machine with functions.

[0016]

In the copying machine with the resume function according to the present invention, when the operation mode is collectively set to the standard mode (mode clear, auto clear, auto shut off, etc.), the second mode is set.
The mode is set based on the contents of the storage means, and the power is turned on.
At the time of N, the mode setting is executed based on the contents of the first storage means to change the initial setting at the time of resume and mode clear (the mode does not change even if the power is turned on).

When the operation mode is collectively set to the standard mode (mode clear, auto clear, auto shut off, etc.), the mode is set based on the contents of the second storage means, and when the power is turned on, the first storage is performed. A first mode setting for executing the mode setting based on the contents of the means and a second mode setting for executing the mode setting based on the contents of the second storage means.
By selecting one of the two modes of mode setting and executing the mode setting based on the selected mode,
It is possible to select whether to convert the initial settings at the time of resume and mode clear.

When the operation mode is collectively set to the standard mode (mode clear, auto clear, auto shut off, etc.), the mode setting is executed based on the contents of the second storage means, and when the power is turned on, the first storage is performed. A first mode setting for executing the mode setting based on the contents of the means and a second mode setting for executing the mode setting based on the contents of the second storage means.
If you select either of the two modes of mode setting to execute the mode setting and select the auto clear means to ON,
By executing the mode setting based on the contents of the second storage means, the resume setting is turned off when the auto clear ON setting is executed.

When the operation mode is collectively set to the standard mode (mode clear, auto clear, auto shut off, etc.), the mode setting is executed based on the contents of the second storage means, and when the power is turned on, the first storage is performed. A first mode setting for executing the mode setting based on the contents of the means and a second mode setting for executing the mode setting based on the contents of the second storage means.
When either of the two modes of mode setting is selected to execute the mode setting, and when the first mode setting is selected, the mode is set to the mode in which the auto clear is not executed, and when the resume is turned on, the auto clear setting is turned off. To do so.

When the operation mode is collectively set to the standard mode (mode clear, auto clear, auto shut off, etc.), the mode setting is executed based on the contents of the second storage means, and when the power is turned on, the first storage is performed. A first mode setting for executing the mode setting based on the contents of the means and a second mode setting for executing the mode setting based on the contents of the second storage means.
When either one of the two modes of mode setting is selected and the second mode setting is selected, rewriting of the first storage means is prohibited,
When the first mode setting is selected, the resume setting is performed by executing the mode setting based on the contents of the first storage means.
From ON to the setting before OFF.

When the operation mode is collectively set to the standard mode (mode clear, auto clear, auto shut off, etc.), the mode setting is executed based on the contents of the second storage means, and when the power is turned on, the first storage is performed. Of the contents of the means, only those not included in the second storage means, the first
By executing the mode setting based on the contents of the storage means and executing the mode setting based on the contents of the second storage means other than that, the magnification and the like are kept as they are even when the power is turned off, and the sheet feeding position is maintained. Etc. are default.

When the operation mode is collectively set to the standard mode (mode clear, auto clear, auto shut off, etc.), the mode setting is executed based on the contents of the second storage means, and all of the first storage means are set. The first mode setting for executing the mode setting based on the contents, and the mode setting based on the contents of the first storing means only for the contents of the first storing means not included in the second storing means, Other than that, one of the two mode settings of the second mode setting for executing the mode setting based on the contents of the second storage means is selected, and when the power is turned on, the mode setting is executed based on the selected mode setting. As a result, it is possible to select the magnification and the like as they are even after the power is turned off, or the feeding position and the like are set to the default.

Further, when an abnormality of the first storage means is detected, and when there is an abnormality of the first storage means when the power is turned on, mode setting is executed based on the contents of the second storage means, and when the power is turned on, the first When it is determined that the storage means is normal, the mode setting is executed based on the contents of the first storage means,
The resume function is prohibited when the non-volatile first storage means is abnormal.

[0024]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to the accompanying drawings. FIG. 1 is an explanatory diagram showing a schematic configuration of a copying machine to which the present invention is applied. This copying machine has a document reading system 10
1, image forming system 102, paper feeding / conveying system 103, fixing / paper discharging system 1
04, an LCT (Large Volume Feeding Unit) 105 that is optionally installed, and an operation display system, an electrical equipment control system (not shown), and the like.

Next, the original reading system 101 and the image forming system 10
2. Specific configurations of the paper feed / conveyance system 103 and the operation display system will be described in detail in order. FIG. 2 is an explanatory diagram showing a detailed configuration of the document reading system 101, which includes an ADF (automatic document feeder) 201 that automatically conveys a set document and an optical unit 202 that illuminates the document and forms an optical image. It is configured. The ADF 201 is openably and closably mounted on the document placement surface and is composed of a document set table, a conveyance roller, a conveyance belt, and the like. In addition, the optical unit 202
Is a contact glass 203 on which a document is placed, an exposure illumination unit (fluorescent lamp) 204, and a first mirror 205.
The first scanner 206 and the second mirror 2 which are integrally configured by
07 and a third mirror 208, a second scanner 209 integrally formed, a fourth mirror 210 and a fifth mirror 21.
The third scanner 212, the sixth mirror 213, and the lens 214, which are integrally configured by 1, are housed in the housing.

FIG. 3 is an explanatory diagram showing the detailed structure of the image forming system 102. The image forming system 102 is composed of processing units based on a commonly used electrophotographic process. That is, 301 is a photoconductor drum that forms an electrostatic latent image, 302 is a charger that uniformly corona-discharges the surface of the photoconductor drum 301, 303 is a toner container, and the toner is stored in the photoconductor drum 301 based on the developing process.
A developing unit that is attached to the substrate and executes a developing process, 304
Is a transfer charger that executes a transfer process by corona discharge, and 305 is a separation charger that separates the recording paper that is in close contact with the photosensitive drum 301 by a corona discharge.

A cleaning unit 306 removes and collects residual toner on the surface of the photosensitive drum 301 after the transfer processing by the fur brush 307 and the cleaning blade 308. A cleaning unit 309 erases residual charges on the surface of the photosensitive drum 301. Ching lamp, 31
Reference numeral 0 is an eraser for optically erasing charges outside the original reading size or outside the effective image area. Reference numeral 311 is a photosensitive drum 30.
A potential sensor that measures and feeds back the surface potential on one surface, 312 is a PTC (pre-transfer charger) that performs static elimination before transfer processing by corona discharge, and 313 is a PTL (pre-transfer lamp) that statically eliminates static electricity before transfer processing. ), 31
Reference numeral 4 denotes a registration roller that conveys the recording paper at a timing synchronized with the image formed on the photosensitive drum 301, and 315 optically detects the density of the pattern formed on the photosensitive drum 301 and feeds it back as toner density. A sensor (toner concentration sensor) 316 is the photosensitive drum 301.
Contact the surface with slight pressure to separate (separate) the leading edge of the recording paper.
In addition, it is a separation claw that prevents entrapment.

FIG. 4 is a central sectional view showing the detailed structure of the paper feeding / transporting system 103, which constitutes the lower part of the copying machine. In the figure, reference numerals 401 to 404 denote paper feed trays capable of stacking a plurality of recording paper sheets and pulling them out toward the front side, 405 a manual feed table for setting recording paper sheets one by one at an irregular size or during interrupt copying processing, and 406 is a manual feed table. A manual paper feeding unit, 407 is a double-sided paper feeding unit, and 408 is a double-sided tray. That is, the paper feeding section is configured by arranging the paper feeding trays 401 to 404 for accommodating a plurality of recording papers in two rows in two rows in parallel, and also including the manual paper feeding unit 406 and the double-sided paper feeding unit 407. A right vertical transport unit 409 is provided on the exit side of the paper feed trays 401 and 402, while a left vertical transport unit 410 is provided on the exit side of the paper feed trays 403 and 404. A horizontal transport unit 411 is provided at the exit of the right vertical transport unit 409, and these transport paths are arranged so as to communicate with the registration rollers 314. In addition, each paper feed tray 401 to 4
04 is provided with sheet feeding units 412 to 415 for separating and transporting recording sheets one by one.
Reference numeral 5 includes a pickup roller, a feed roller, a separate roller and the like. Further, reference numeral 416 is a conveyor belt for guiding the recording paper which has been transferred and separated to the fixing / paper discharging system 104.

Next, the operation of the copying machine configured as described above will be described. The photosensitive drum 301 is rotatably supported by a drum shaft (not shown) and rotates counterclockwise in response to a copy start command or the like. Almost at the same time, the document to be copied, which is conveyed to a predetermined position on the contact glass 203 by the ADF 201, is exposed and scanned by the first scanner 206. At this time, fluorescent light 2
04 reflected light of the original obtained by the illumination (reflected light image)
Through the first mirror 205, the second mirror 207, the third mirror 208, the lens 214, the fourth mirror 210, the fifth mirror 211, and the sixth mirror 213, and the photosensitive drum 3
Image on 01.

On the other hand, prior to this, the surface of the photosensitive drum 301 is uniformly charged by the charging charger 302, so that an electrostatic latent image is formed by the potential distribution corresponding to the reflected light image. Photoconductor drum 301
Eraser 310 irradiates unnecessary light on the surface, and the surface is corrected to an electrostatic latent image area suitable for recording paper or a projected image. At this time, in order to obtain an image of equal size, the photosensitive drum 301 and the first scanner 206 are driven at the same speed. Next, the electrostatic latent image on the photosensitive drum 301 is visualized (toner image) by the toner contained in the developing unit 303. At this time, a developing bias potential is applied to the developing bias line of the developing unit 303,
A grayscale image is adjusted by controlling the amount of toner attached to the photoconductor drum 301.

On the other hand, the feeding of the recording paper is started almost in parallel with the image forming process. That is, the paper feed trays 401 to 40
4, paper feed from any one of the manual feed table 405, LCT 105, and double-sided tray 408 is selected, and paper feed is executed at a predetermined paper feed timing. For example, the paper feed tray 40
When the paper is fed from 1, the paper is fed by the paper feeding operation of the paper feeding unit 412, and the fed recording paper is fed to the right vertical transport unit 40.
9 and the horizontal transport unit 411, and then the registration roller 314.
Sent to. The recording paper is subjected to skew feed correction (skew correction) by coming into contact with the nip portion of the registration roller 314 that is stopped, and then the photoconductor drum 30.
The toner image is conveyed by restarting the registration roller 314 at the timing when the positional relationship with the toner image formed on the first image is matched.

Next, the recording paper is conveyed to the photosensitive drum 301 and comes into close contact therewith, and the toner image on the photosensitive drum 301 becomes P
TC312, PTL313, and transfer charger 30
By the action of 4, the toner image is transferred onto the recording paper. At this time, since the surface of the photosensitive drum 301 is very smooth, the adhesive force of the recording paper is large. For this reason,
The corona discharge of the separation charger 305 lowers the electric potential of the recording paper and reduces the adhesive force between the photosensitive drum 301 and the recording paper. Next, the recording paper is separated from the surface of the photosensitive drum 301 by the separation claw 316, and the separated recording paper is sent to the fixing / paper discharge system 104 by the conveyor belt 416. In the fixing / sheet discharging system 104, heat and pressure are applied to the conveyed recording sheet by a fixing roller and a pressure roller to fix the toner image on the recording sheet, and then the sheet is discharged outside the machine. Alternatively, in the case of double-sided copying, it is conveyed to the double-sided tray 408 side.

After the transfer process, the surface of the photosensitive drum 301 is left with the residual toner and paper dust after the transfer. Therefore, the cleaning unit 306 is the fur brush 307.
And the contact of the cleaning blade 308 collects adhering substances such as residual toner on the surface of the photosensitive drum 301. After that, the queuing lamp 309 is turned on to make the surface potential of the photosensitive drum 301 uniform, and the standby state is prepared for the next copying and copying process.

The control timing in the image forming process and the carrying process is obtained mainly based on a pulse signal generated in synchronization with the rotation of the photosensitive drum 301 or a reference pulse signal for driving the photosensitive drum 301. To be

FIG. 5 is an explanatory view showing a specific structure of the panel surface of the operation display unit according to the present invention, and FIGS.
, Various switches, LED and LCD
It is composed of a display panel 511 part composed of the like. Since the keys and displays have been described with reference to FIGS. 29 and 30, detailed description thereof will be omitted here, but if there are a plurality of displays for one key, rotation display is performed by pressing the key. However, the modes are incompatible.

Further, FIG. 6 shows the display panel 5 of FIG.
It is explanatory drawing which shows the detailed structure of 11 parts, and as shown in FIG. 31 and FIG. 32, the display element for various displays is arrange | positioned. Further, since these respective displays have been described with reference to FIGS. 31 and 32, detailed description thereof will be omitted here.

FIG. 7 is a block diagram showing a schematic structure of the copying machine according to the present invention. In the figure, 701 is a CP that executes control based on control programs and data.
U and 702 are ROs in which a control program is stored in advance.
M and 703 are backed up by a battery, CPU
This is a non-volatile RAM that stores the processing result of 701 and the like.

Further, the CPU 701 has an IN port 70
4, OUT port 705, timer 706, printer control unit 707, optical system control unit 708, high-voltage power supply unit 709, motor control unit 710, heater control unit 711, sensor sensitivity control unit 712, and A / D converter 713 are connected to each other. Has been done.

A memory clear DIPSW 724, a human body detection sensor 725, and remote communication enable / disable DIPSW 726 are connected to the IN port 704. Also, O
A display panel 511 is connected to the UT port 705. Further, the printer control unit 707 includes a printer 7
27 is connected.

An exposure illumination unit (fluorescent lamp) 204 is connected to the optical system control unit 708, and a charging charger 302, a separation charger 305, a transfer charger 304, a PTC 312, and a developing bias 720 are connected to the high voltage power supply unit 709. It is connected. Further, a main motor 714, a heater control unit 711, a fixing heater 715, a sensor sensitivity control unit 712, a P sensor 315, an ADS sensor 716, and a lamp light amount sensor 717 are connected to the motor control unit 710, respectively. Further, the A / D converter 713 has a lamp voltage of 7
21, P sensor light emitting voltage 722, P sensor light receiving voltage 72
3, the potential sensor 311, the ADS sensor 716, the lamp light amount sensor 717, the drum current sensor 718, and the fixing thermistor 719 are connected so as to be input.

The operation of the copying machine configured as described above will be described. The control of the copying machine main body is executed mainly by the CPU 701 based on a control program and data stored in the ROM 702. Also, the CPU 70
The intermediate result of the processing by 1 is stored in the RAM 703.
The IN port 704 is a key on the operation display unit (see FIG. 5),
Memory clear DIPSW 724, human body detection sensor 72
5, remote communication enabled / disabled Input of DIPSW 726 is executed. The OUT port outputs a display to the display panel unit 511. A timer 706 indicates the time and is used for AC power ON / OFF control in the weekly timer.
When the power is turned on, the memory clear DIPSW 724 turns off.
If it is N, the content of the non-volatile RAM 703 is set to a preset value.

The A / D converter 713 has a lamp voltage 721, a P sensor light emission voltage 722, a P sensor light reception voltage 723, an output of the potential sensor 311 and an ADS sensor 716.
Output, the output of the lamp light amount sensor 717, the output of the drum current sensor 718, and the voltage of the fixing thermistor 719 are converted into digital data and converted into digital data by the CPU.
Output to 701. Further, the high voltage power supply unit 709 is
Charging charger 302, separation charger 305, transfer charger 304, PTC (pre-transfer charger) 312,
And supply high voltage power to the developing bias 720,
The motor control unit 710 executes drive control of the main motor 714. In addition, the sensor sensitivity control unit 712
Is the light receiving gain of the lamp light amount sensor 717, the light receiving gain of the ADS sensor 716, the light receiving gain of the P sensor 315,
And used to variably control the light emission voltage of the P sensor 315. The optical system control unit 708 controls the exposure illumination unit 204, and the heater control unit 711 controls the fixing heater 715.

Next, the toner density control of this copying machine will be described. FIG. 8 is an explanatory view showing the toner density control, and is a plan view in the peripheral portion of the contact glass 203. In FIG. 8, reference numeral 801 is the contact glass 203.
802 is a P sensor pattern, 803 is an ADS reference pattern, 804 is a VL pattern, and 805 is a VD pattern. This P sensor pattern 802, ADS reference pattern 803, VL pattern 8
Four patterns 04 and VD pattern 05 are provided on the back surface (optical system side) of the optical table 801.

Further, FIG. 9 is an explanatory diagram showing the operation of toner density control in the above configuration. In FIG. 9, the first scanner 206 is moved below the P sensor pattern 802, the P illumination sensor unit 802 is illuminated by illuminating the exposure illumination unit (fluorescent lamp) 204, and the reflected light image is formed on the photosensitive drum 301. And a toner image (P sensor toner image) is formed.

Next, the main toner concentration control will be explained based on the explanatory diagram showing the operation of the toner concentration control of FIG. 10. The above P sensor toner image is read by the P sensor 315, and the P sensor output voltage at this time is Vsp. And the photoconductor drum 3
The output voltage of the P sensor at the background portion of 01 is Vsg. The value of the comparison value of Vsp and Vsg of 1 / 13Vsg is used as the reference voltage, and the proper concentration is set when Vsp is the reference voltage. The toner density control is executed by comparing this reference voltage with Vsp. When Vsp is higher than 1/13 Vsg, it is determined that the toner concentration is low and toner is replenished.

Next, the control of the exposure lamp light quantity of this copying machine will be described. FIG. 11 is an explanatory diagram showing exposure lamp light amount control. In the figure, 1101 is a main control plate on which the control system described in FIG. 7 is mounted, and 1102 is a fluorescent lamp stabilizer for controlling the lighting of the exposure illumination unit (fluorescent lamp) 204.

To explain the operation of the above configuration, in order to always maintain a stable state in forming an electrostatic latent image (image) formed on the photosensitive drum 301, an exposure illumination unit (fluorescent light) is used. It is necessary to always keep the light amount of the (lamp) 204 appropriate. Therefore, the exposure illumination unit (fluorescent lamp) 20
While the lamp 4 is lit, its light quantity is detected by the lamp light quantity sensor 717, and based on this detected light quantity, the main control board 110
Reference numeral 1 changes the lamp output signal to the fluorescent lamp ballast 1102 to control the light amount.

Next, automatic density adjustment (ADS) of this copying machine
The control will be described. This automatic density adjustment (ADS) control is executed by the configuration shown in FIG. That is,
The ADS sensor 716 reads the reflected light obtained by irradiating the document with the ADS sensor 716 in synchronization with the scanning of the first scanner 203, compares the maximum value (VDE) of the voltage with the reference value, and the VDE is high (bright). ) Or low (dark)
The development bias is changed according to the conditions to stabilize the image. The reference value of the ADS sensor 716 is AD
The S reference pattern 803 (see FIG. 8) is the output value of the ADS sensor 716 when exposed with a constant light amount.

By the way, the process control means the decrease of the light quantity of the exposure illumination unit (fluorescent lamp) 204 with the passage of time.
The potential sensor 311 detects the contamination of the optical components constituting the optical unit 202, the output variation of the charging charger 302, the potential variation of the electrostatic latent image due to the sensitivity of the photosensitive drum 301, the residual potential, etc., and the charging, exposure, and development are performed. This system feeds back to each process and controls each characteristic value to always obtain a stable image. Further, since the electrostatic latent image is stable, the toner density control operation by the P sensor 315 is also stable.

Next, the process control of this copying machine will be described. FIG. 13 is an explanatory diagram showing the potential state of the surface of the photosensitive drum in each process, and FIG. 14 is a graph showing the relationship between the document density and the surface potential of the photosensitive drum. Replace the photosensitive drum 301 with a quenching lamp (Q
After irradiating with L) 309, the potential of immediately after charged by the charging charger 302 Vo (charge potential after), VL pattern 804 (the potential after exposure of the reference Figure 8) V _L (white portion potential), VD The potential after exposing the pattern 805 (see FIG. 8) is V _D (black portion potential), and the potential after irradiating the photoconductor drum 301 with the eraser 310 is V _R (residual potential).

In FIG. 14 described above, in order to obtain an appropriate image, it is necessary to always keep the potential difference between V _D (black portion potential) and V _L (white portion potential) constant. Further, since V _R (residual potential) cannot be set to 0 even if the exposure output is increased, V _D (black portion potential) and _VL (white portion potential).
It is possible to make the potential difference between V _D (black part potential) and V _L (white part potential) constant by adding V _R (residual potential) to the target value of. Also, V _R is the surface potential of the photosensitive drum 301 by applying a (residual potential) is uniformly V _R (residual potential) amount is increased, the addition of V _R (residual potential) amount to the developing bias Correct the rising amount.

Next, each mode setting process according to the present invention will be described. In the copying machine shown in this embodiment, the mode is returned to the standard mode when the mode clear key 541 is turned on or when the auto clear function operates. in this case,
The standard mode can be changed according to the user's preference, and the standard mode is set in the service mode. These operations are as in the subroutine shown below.

FIG. 15 is a flow chart showing the service mode number input acceptance processing according to the present invention. In FIG. 15, after executing the mode setting process (S1501),
It is determined whether or not the mode clear key 541 is turned on (S1502). When it is determined that the mode clear key 541 is not turned on, a subroutine call is executed (S1503) and the process returns. On the other hand, in step 1502, the mode clear key 541 is turned on.
If it is determined that the setting value input result is 1, it is determined (S1504), and if it is determined that the setting value input result is not 1, the process returns. on the other hand,
When it is determined in step 1504 that the setting value input result is 1, DTBUF is set to DSVKNUM.
(S1505), the service mode corresponding to DSVKNUM is executed (S1506), and step 1
Return to 504. In this way, by turning on the power while pressing the mode clear key 541, the service mode number input acceptance state is entered.

FIG. 16 is a flow chart showing the set value input processing according to the present invention. In the setting value input process here, a numeric keypad 508 is used to input a numerical value, and the enter key 50
When 7 is pressed, the input value of the ten-key 508 is set in DTBUF, and as a return value to indicate the end of setting,
This is a subroutine that returns 1.

That is, in FIG. 16, DTBUF is set to 0 (S1601), and the enter key 507 is set to O.
If it is determined that it is N (S1602), and if it is determined that the enter key 507 is ON, 1 is returned to DTBUF (S1603) and the process returns. On the other hand, in step 1602, the enter key 50
When it is determined that 7 is not turned on, it is further determined whether the clear key 537 is turned on (S16).
04). In this step 1604, the clear key 5
When it is determined that 37 is turned on, step 16
On the other hand, when it is determined that the clear key 537 is not turned on, the mode clear key 54
It is determined whether 1 is ON (S1605). At step 1605, the mode clear key 541 is turned on.
When it is determined that the DTBUF is set, 0 is added to DTBUF.
Is returned (S1606), and this subroutine is returned. On the other hand, when it is determined in step 1605 that the mode clear key 541 is not turned on, the input by the ten keys 508 is executed based on the content shown in FIG. 33, for example (S1607), and the input value by the ten keys 508 is input to the DTBUF. Set (S160
8), return to step 1602 above. Note that the content of FIG. 33 shows only one part of many service modes for simplification of description.

Further, in the above, for example, in order to set the standard paper feed position, 1 is input with the ten keys 508 and the enter key 507 is pressed. Since the return value of the setting value input subroutine is 1, DTBUF is set to DSVKNUM
Set to. The CPU 701 performs corresponding service mode processing based on the value of DSVKNUM, and executes standard paper feed position setting processing.

Next, the process for setting the standard paper feed position will be described. FIG. 17 is a flowchart showing the standard paper feed position setting process according to the present invention. First, it is determined whether or not the setting value input result is 1 (S1701). When it is determined that the setting value input result is 1, the standard paper feed position data DIFDP is set in DTBUF (S1702),
This subroutine returns.

Further, in this embodiment, the sheet feeding positions of 1 to 4 stages are selectable, and the value obtained by subtracting 1 from the number of sheet feeding stages corresponds to the numerical value. For example, when it is desired to set the standard paper feed position to the second stage, 1 is input with the ten keys 508 and the enter key 507 is pressed. In this case, since the return value of the set value input subroutine is 1, the value of DTBUF is set in the standard paper feed position data DIFDP. The standard paper feed position data DIFDP is a predetermined address of the nonvolatile RAM 703, and the value is held even when the power is turned off. After that, the processing returns to the processing shown in FIG. 15, and the service mode number input acceptance state is entered again.

Next, the setting of the auto clear time will be described. The set value of the auto clear time indicates the time from when the key operation on the operation display unit is stopped until the standard mode is reached, in units of 1 minute. When it is 0, it indicates that the auto clear function is off. Similarly, these values are held at predetermined addresses in the non-volatile RAM 703 and are retained even when the power is turned off.

FIG. 18 is a flow chart showing the auto clear time setting process according to the present invention. In FIG. 18, first, it is determined whether or not the setting value input result is 1 (S1801), and when it is determined that the setting value input result is 1, the setting data DATCLR is set in DTBUF (S1802), It is determined whether the setting data DATCLR is 0 (S1803). This step 1
If it is determined in 803 that the setting data DATCLR is not 0, the resume setting data DRES
UM is set to 0 (S1804), and this subroutine is returned. On the other hand, when it is determined in step 1801 that the setting value input result is not 1, the above step 1
If it is determined at 803 that the setting data DATCLR is 0, then the present subroutine is returned.

As described above, the set value is the set data DAT.
When it is set to CLR and the value of the setting data DATCLR is other than 0, the resume setting data DRESUM is set to 0 because the auto clear function is ON. This means that the user who wants to copy in the standard mode is the mode set by the user who was using before, such as when one copier is shared by multiple users. The resume function is forcibly turned off in order to prevent unintentional miscopying.

Next, the setting of the resume function will be described. The setting of the resume function is whether to return to the mode before the power was turned off when the power was turned on.
That is, when it is 0, the resume function is turned off and the power is turned on.
When N, the same processing as the mode clear processing is executed, and when it is 1, the resume function is turned ON.

FIG. 19 is a flow chart showing the resume function setting process according to the present invention. First, it is determined whether or not the setting value input result is 1 (S1901), and when it is determined that the setting value input result is 1, the resume setting data DRESUM is set in DTBUF (S1).
902), and further, this resume setting data DR
It is determined whether ESUM is 1 (resume function is ON) (S1903). When it is determined in step 1903 that the resume function is ON,
Set the auto clear setting data DATCLR to 0 (S
1904). This is because the user who turns on the resume function setting frequently uses a complicated and constant operation mode and prefers that the previous setting remains as it is even if the power is turned off. Therefore, the setting of the auto clear function is forcibly turned off.

Further, after the auto clear setting data DATCLR is set to 0 in step 1904, the paper feed position DFEED is transferred to the buffer BFFEED (S19).
05), copy number value DCPYNUM is buffer BFF
Transfer to CPYNUM (S1906) and return from this subroutine.

Further, since the buffer BFFEED and the buffer BFFCPYNUM are predetermined addresses of the non-volatile RAM 703, the values are held even when the power is turned off. When the resume function is turned on again, the buffer BFEED and the buffer BFFCPYNUM respectively have the paper feed position DFEED and the copy number value D.
Set to CPYNUM. This is because when a user who frequently uses the resume function and a user who does not use the same share a single copying machine, a user who does not use the resume function turns off the resume function and then frequently uses the resume function. This is because the user does not need to set the mode from the beginning when the user tries to copy the previously used setting in a complicated mode.

On the other hand, when it is determined in step 1903 that the resume function is OFF (DRESUM is not 1), the buffer BFFEED is set to the sheet feeding position DFEED (S1907), and the buffer B is set.
FFCPYNUM is set to the number of copies DCPYNUM (S1908), and this subroutine is returned.

Next, each normal process related to the present invention will be described. As described in FIG. 15, when the mode clear key 541 is not pressed when the power is turned on, various subroutine calls are executed without executing the service mode process. This called subroutine is for the main control processing of the copying machine. For example, there are paper feed position selection and copy number set related to this embodiment.

FIG. 20 is a flow chart showing the paper feed position selection processing according to the present invention. When the copying machine is in the ready state, the paper feed position can be changed by operating the paper selection key 533. In FIG. 20, it is determined whether or not the paper selection key 533 is turned on (S2001), and the paper selection key 5
When it is determined that 33 is ON, the paper feeding position D
The FEED is incremented by 1 and the paper feed stage is moved to the lower stage (S2002). Next, it is judged whether or not the paper feed position DFEED is larger than 3 (S2003). When it is judged that the paper feed position DFEED is larger than 3, the paper feed position DFEED is returned to 0 (S2004), and Return the subroutine. On the other hand, when it is determined in step 2001 that the paper selection key 533 is not turned on, in step 2003, the paper feed position D
When FEED is 3 or less, this subroutine is returned.

Further, in the above, when copying is started, the recording paper is fed from the paper feed stage corresponding to the value of the paper feed position DFEED, and a predetermined copy process is executed.

Next, the process of setting the number of copies will be described. FIG. 21 is a flowchart showing the copy number setting process according to the present invention. First, it is determined whether or not the service mode is in progress (S2101), and when it is determined that the service mode is not in operation, it is further determined whether or not copying is in progress (S2102). Step 2 above
When it is determined in 102 that copying is not in progress, it is further determined whether or not the clear key 537 is ON (S2103), and when it is determined that the clear key 537 is OFF, an arbitrary number of sheets are input from the numeric keypad 508. Enter the number (S2104), and enter this numeric value as the number of copies D
It is set to CPYNUM (S2105), and this subroutine is returned.

On the other hand, when it is determined in step 2103 that the clear key 537 is ON, the copy count value DCPYNUM is set to 1 (S210).
6). When copying starts, the copy counter is incremented by 1 for each paper feeding operation, and the copy count value DCPYNUM
The copy process is executed until it matches with, and if they match, the final copy process is executed and the copy operation is ended.

Next, the mode setting process will be described.
Mode setting processing is performed when the mode clear key 541 is pressed, when auto clear is activated, and when the power is turned on.
This is executed at the same time to set the paper feed mode and the number of copies.

FIG. 22 is a flow chart showing the paper feed mode setting process according to the present invention. First, it is determined whether or not the power is ON (S2201), and when it is determined that the power is ON, it is further determined whether or not DRESUM is 1 (S2202). Step 22 above
In 01, when it is determined that the power source is OFF, and when it is determined in step 2202 that DRESUM is not 1, DIFFEDP in the standard mode is set.
Is set to DFEED (S2203), and this DF
A paper feed mode process according to the EED is executed (S220
4), this subroutine is returned. When it is determined in step 2202 that DRESUM is 1, similarly, in step 2204, DFEE
The paper feed mode process according to D is executed, and this subroutine is returned.

That is, in the paper feed mode setting described above, when the power is turned on, if DRESUM is checked and the resume function is OFF, the value of DIFEDP, which is the standard mode, is set to DFEED and the resume function is turned ON. If so, the value of DFEED is not changed. This DFEED is non-volatile, and the power source O
Since the value before FF is held, the resume function is realized. After that, the paper feed mode processing is executed according to the DFEED value.

FIG. 23 is a flow chart showing the copy number setting process according to the present invention. First, like above,
When it is determined that the power source is ON (S2301), and when it is determined that the power source is ON, further DRE is performed.
It is determined whether SUM is 1 (S2302). When it is determined in step 2301 that the power is off, and in step 2302, D
When it is determined that RESUM is not 1, the standard mode value 1 is set in DCPYNUM (S2303), the copy number setting process corresponding to this DCPYNUM is executed (S2304), and this subroutine is returned. Also, in step 2302 above, DRESUM is 1
If it is determined that
Then, the paper feed mode process according to DCPYNUM is executed, and the present subroutine is returned.

That is, the copy number setting in the above is also similar to the paper feeding mode setting when the power is turned on.
If the SUM is checked and the resume function is OFF, the standard mode value 1 stored in the ROM 702 is set in DCPYNUM, and if the resume function is ON, the value of DCPYNUM is not changed. Also,
DCPYNUM is also non-volatile and retains the value when the power is turned off, thus realizing the resume function. afterwards,
A copy number setting process according to the DCPYNUM value is executed.

Next, the auto clear processing will be described. FIG. 24 is a flowchart showing the auto clear process according to the present invention. First, it is determined whether or not copying is in progress (S2401), and when it is determined that copying is not in progress, it is further determined whether or not in service mode (S2402). If it is determined in step 2402 that the service mode is not in progress,
It is determined whether DATCLR is 0 (S240
3) If it is determined that DATCLR is 0, it is determined whether any key is pressed (S240).
4). When it is determined in step 2404 that any key has been pressed, TM1 is set to 0 (S2405), and this subroutine is returned. On the other hand, when it is determined in step 2404 that any key is not pressed, TM1 ≧
It is determined whether it is DATCLR (S2406), and T
If it is determined that M1 ≧ DATCLR, the above-described mode setting process is executed (S2407), and the present subroutine is returned.

That is, the auto-clear processing is prohibited during copying or during the service mode, and when not during copying or during the service mode, if the DATCLR is 0, the auto-clear function is off and the processing ends. For example,
Check the value of TM1. TM1 is incremented by 1 every minute by the timer interrupt processing. TM1 is D
When the value is smaller than the ATCLR value, this auto clear processing is ended. When TM1 ≧ DATCLR, the above-mentioned mode setting process is executed. In addition, power supply O
Since it is not N, D is set to DFEED in the paper feed mode setting.
If IFEDP is set and the number of copies is set, DCP
YNUM is set to 1. The above operation is summarized in FIG.

Further, in the above embodiment, the paper feed position can be set to the standard mode. However, when the resume function is activated, the paper feed position is set before the power is turned off. Since the standard mode is set by some users, the number of copies may be held at the value, but the paper feed position may be desired to be the value set at the standard mode. In order to handle such a case, another embodiment will be described below. In this embodiment, ON / OFF of the forced standard mode is selectable. When the forced standard mode is ON, even if the resume function is ON, even if the standard mode can be set, the standard mode is set. Set. Another embodiment will be described in detail below.

FIG. 25 is a flow chart showing another embodiment of the paper feed mode setting process according to the present invention. First, it is determined whether or not the power is on (S2501), and the power is turned on.
When it is determined that it is not N o'clock, the standard mode D
Set the value of IFEDP to DFEED (S250
2) The paper feed mode process according to this DFEED is executed (S2503), and this subroutine is returned. On the other hand, when it is determined in step 2501 that the power is ON, it is determined whether the forced standard mode DKMDSET is 1 (S2504). If it is determined in step 2504 that DKMDSET is 1, the process advances to step 2502 to set DFEED to DIFEDP. On the other hand, the above step 250
When it is determined in step 4 that DKMDSET is not 1, it is further determined whether DRESUM is 1 (S2505), and in this step, DRESU
If it is determined that M is not 1, step 2502
Go to and set DIFEDP to DFEED. On the other hand, when it is determined that DRESUM is 1, the process proceeds to step 2503, the paper feed mode process according to DFEED is executed, and the present subroutine is returned. Also, when mode clear and auto clear, DKMDS
Without performing the ET check, the same paper feed mode setting process as that shown in FIG. 22 is executed.

Next, the setting of the forced standard mode will be described. The setting of the forced standard mode is executed in the service mode like the setting of the resume function. FIG. 26
6 is a flowchart showing a forced standard mode setting process according to the present invention. First, it is determined whether or not the setting value input result is 1 (S2601). When it is determined that the setting value input result is 1, DTBUF is set in DKMDSET (S2602), and this subroutine is returned.

Next, a description will be given of an embodiment of a highly reliable copying machine capable of determining the mode even when the contents of the nonvolatile RAM 703 are destroyed in the copying machine having the resume function. Note that the hardware configuration is the same as the above, and the ROM 702 stores a setting mode program when a memory error occurs. Also, CP
The control of U701 is also similar to the above, and as shown in FIG.
In the mode setting process shown in, the following mode setting process shown in FIG. 27 is executed.

FIG. 27 is a flow chart showing the mode setting process according to the present invention. First, memory clear DIP
It is determined whether the SW 724 is ON (S270
1) If it is determined here that the memory clear DIPSW 724 is ON, a fixed code, for example, 11H is written in a predetermined address of the nonvolatile RAM 703 (S2
702). On the other hand, when it is determined in step 2701 that the memory clear DIPSW 724 is OFF, a memory check is executed (S2703),
A fixed code is read at a predetermined address of the non-volatile RAM 703 and it is determined whether or not there is a memory abnormality (S270).
4). That is, the fixed code read (in this case,
11H), it is determined whether or not they match, and if they match, it means that the memory is normal, and if they do not match, it means that the memory is abnormal. If this is executed for multiple addresses, a more accurate judgment can be made.
Next, when it is determined in step 2704 that a memory is abnormal, the memory abnormal mode is set (see FIG. 28).
Is executed (S2705), and this process is returned. On the other hand, after executing the process of step 2702 and when it is determined in step 2704 that the memory is normal, the normal mode setting process (see FIGS. 22 and 23) is performed.
Is executed (S2706), and this subroutine is returned.

Next, an example of the memory abnormality mode setting in step 2705 will be described. FIG. 28 is a flow chart showing the memory abnormality mode setting processing according to the present invention. First, the setting mode at the time of memory abnormality is read from the ROM 702, and 0 is set in DFEED (S28
01), and also set DCPYNUM to 1 (S
2802), this subroutine is returned.

In the above-described embodiment, the paper feed position, the number of copies, etc. have been described as an example. However, in addition, the length designation in the x and y directions of the image erasing area at the time of image editing, the movement amount, and the scaling factor It is also possible to retain the setting data before the power is turned off, such as adjustment values for image adjustment. In addition, even if the power is turned off during the service mode or during the setting of the size scaling, and then the power is turned on again, the service mode or the size scaling setting of the original state is immediately achieved by the same method. can do. That is, it is achieved by executing these mode setting processes according to the mode setting when the power is turned on.

Next, the effect of this embodiment will be described in detail. First, when the power is turned on, all modes including those with standard mode settings are restored to the mode before being turned off (resume function), and in the case of auto clear, etc., the mode is restored to the standard mode. You can select the appropriate mode batch setting from the auto clear function.
A user-friendly copying machine can be provided.

Second, the resume function setting ON / OF
Since F can be selected and the mode setting when the power is turned on can be switched according to the user's preference, a user-friendly copying machine can be provided.

Third, when the auto clear function is turned on, the setting of the resume function is forcibly turned off, so that the user's discomfort with respect to the contradiction between the two functions of the resume function and the auto clear function is reduced. It is possible to provide a user-friendly copying machine by eliminating inconsistencies in settings.

Fourthly, when the resume function is turned on, the setting of the auto clear function is forcibly turned off, so that the user's discomfort with respect to the contradiction between the two functions of the resume function and the auto clear function can be reduced. it can.

Fifth, when the resume function setting is turned from OFF to ON, the mode state before turning OFF the resume function is set, so that the user's operation work can be reduced.

Sixthly, when the resume function is operated when the power is turned on, the standard mode can be individually set to return to the set standard mode, and otherwise the resume function is operated. A copier can be provided.

Seventh, when the resume function is operated, it is possible to select whether to operate the resume function or forcibly set the standard mode to a mode in which the standard mode can be changed according to preference. Therefore, a user-friendly copying machine can be provided.

Eighth, the nonvolatile RAM 70 when the power is turned on
When the check of No. 3 is executed and an abnormality is detected, the standard mode is set, so the nonvolatile RAM 70
Even if the contents of No. 3 are destroyed, the mode is confirmed and a reliable copying machine can be provided in operation.

[0094]

As described above, according to the copying machine with the resume function according to the present invention, the resume function and the standard mode can be set so as to meet the various tastes of the user, and the complicated mode setting work can be performed. By providing simplification and providing a user-friendly copying machine, it is possible to improve the overall copying efficiency.

[Brief description of drawings]

FIG. 1 is an explanatory diagram showing a schematic configuration of a copying machine to which the present invention is applied.

FIG. 2 is an explanatory diagram showing a detailed configuration of a document reading system of a copying machine to which the present invention is applied.

FIG. 3 is an explanatory diagram showing a detailed configuration of an image forming system of a copying machine to which the present invention is applied.

FIG. 4 is an explanatory diagram showing a detailed configuration of a sheet feeding and conveying system of a copying machine to which the present invention is applied.

FIG. 5 is an explanatory diagram showing a configuration of a panel surface of the operation display unit according to the present invention.

FIG. 6 is an explanatory diagram showing a detailed configuration of a display panel portion according to the present invention.

FIG. 7 is a block diagram showing a schematic configuration of a copying machine according to the present invention.

FIG. 8 is an explanatory diagram showing toner density control according to the present invention.

9 is an explanatory diagram showing the toner density control shown in FIG.

FIG. 10 is an explanatory diagram showing an operation of toner density control according to the present invention.

FIG. 11 is an explanatory diagram showing exposure lamp light amount control according to the present invention.

FIG. 12 is an automatic density adjustment (AD) of the copying machine according to the present invention.
It is explanatory drawing which shows S) control.

FIG. 13 is an explanatory diagram showing a potential state on the surface of the photosensitive drum in each process according to the present invention.

FIG. 14 is a graph showing the relationship between the document density and the surface potential of the photosensitive drum according to the present invention.

FIG. 15 is a flowchart showing an operation of a service mode number input acceptance process according to the present invention.

FIG. 16 is a flowchart showing a set value input process according to the present invention.

FIG. 17 is a flowchart showing an operation of standard paper feed position setting processing according to the present invention.

FIG. 18 is a flowchart showing an operation of an auto clear time setting process according to the present invention.

FIG. 19 is a flowchart showing the operation of the resume function setting process according to the present invention.

FIG. 20 is a flowchart showing an operation of a paper feed position selection process according to the present invention.

FIG. 21 is a flowchart showing an operation of a copy number setting process according to the present invention.

FIG. 22 is a flowchart showing an operation of a paper feed mode setting process according to the present invention.

FIG. 23 is a flowchart showing the operation of copy number setting processing according to the present invention.

FIG. 24 is a flowchart showing the operation of the auto clear process according to the present invention.

FIG. 25 is a flowchart showing the operation of another paper feed mode setting process according to the present invention.

FIG. 26 is a flowchart showing the operation of forced standard mode setting processing according to the present invention.

FIG. 27 is a flowchart showing the operation of a mode setting process according to the present invention.

FIG. 28 is a flowchart showing the operation of a memory abnormality mode setting process according to the present invention.

FIG. 29 is a table showing keys and display states of the operation display unit according to the present invention.

FIG. 30 is a table showing keys and display states of the operation display unit according to the present invention.

FIG. 31 is a table showing the configuration and display state of the display panel according to the present invention.

FIG. 32 is a table showing a configuration and a display state of a display panel according to the present invention.

FIG. 33 is a table showing numbers and their contents by a ten-key pad according to the present invention.

FIG. 34 is a table showing the contents of auto clear processing according to the present invention.

[Explanation of symbols]

507 Enter key 508 Numeric keypad 533 Paper selection key 537 Clear key 541 Mode clear key 701 CPU 702 ROM 703 Nonvolatile R
AM

Claims (8)

[Claims] 1. A non-volatile first storage means for storing at least one or more current mode states, a non-volatile second storage means for storing standard settings of at least one or more operation modes, and an operation mode. When the standard mode is collectively set (mode clear, auto clear, auto shut off, etc.), the mode is set based on the contents of the second storage means, and when the power is turned on, based on the contents of the first storage means. A copying machine with a resume function, comprising: a control means for executing mode setting. 2. A non-volatile first storage means for storing at least one or more current mode states, a non-volatile second storage means for storing standard settings of at least one or more operation modes, and an operation mode. When the standard mode is collectively set (mode clear, auto clear, auto shut off, etc.), the mode is set based on the contents of the second storage means, and when the power is turned on, based on the contents of the first storage means. One of two modes, a first mode setting for executing the mode setting and a second mode setting for executing the mode setting based on the contents of the second storage means is selected, and the mode setting is performed based on the selected mode. A copying machine with a resume function, comprising: 3. A non-volatile first storage means for storing at least one or more current mode states, an input means for inputting at least one or more operation modes in a standard setting, and an input initial setting. A non-volatile second storage means for storing the data, an auto clear means for automatically clearing the operation mode to the standard mode after a predetermined time, and a batch setting of the operation mode to the standard mode (mode clear, auto clear, auto shut off, etc.) Sometimes, the mode setting is executed based on the contents of the second storage means, and when the power is turned on, the first mode setting is executed based on the contents of the first storage means and the contents of the second storage means. The mode setting is executed by selecting one of the two modes of the second mode setting for executing the mode setting based on In this case, the copying machine with the resume function is provided with a control means for executing the mode setting based on the contents of the second storage means. 4. A non-volatile first storage means for storing at least one or more current mode states, an input means for inputting a standard setting of at least one or more operation modes, and an input initial setting. A non-volatile second storage means for storing the data, an auto clear means for automatically clearing the operation mode to the standard mode after a predetermined time, and a batch setting of the operation mode to the standard mode (mode clear, auto clear, auto shut off, etc.) Sometimes, the mode setting is executed based on the contents of the second storage means, and when the power is turned on, the first mode setting is executed based on the contents of the first storage means and the contents of the second storage means. When the first mode setting is selected by selecting one of the two modes of the second mode setting for executing the mode setting based on A copying machine with a resume function, comprising: a control means for setting a mode in which auto clear is not executed. 5. A non-volatile first storage means for storing at least one or more current mode states, a non-volatile second storage means for storing at least one or more operation mode standard settings, and an operation mode. When the standard mode is collectively set (mode clear, auto clear, auto shut off, etc.), the mode is set based on the contents of the second storage means, and when the power is turned on, based on the contents of the first storage means. One of two modes, a first mode setting for executing the mode setting and a second mode setting for executing the mode setting based on the contents of the second storage means is selected, and while the second mode setting is being selected. , A control means for prohibiting rewriting of the first storage means and executing the mode setting based on the contents of the first storage means when the first mode setting is selected. A copier with a resume function. 6. A non-volatile first storage means for storing at least one or more current mode states, an input means for inputting a standard setting of at least one or more operation modes, and an input initial setting. And a non-volatile second storage means for storing the operation mode and the operation mode to the standard mode all at once (mode clear, auto clear, auto shut off, etc.), the mode setting is executed based on the contents of the second storage means. When the power is turned on, only the contents of the first storage means that are not included in the second storage means perform the mode setting based on the contents of the first storage means, and otherwise the second storage means. A copying machine with a resume function, comprising: a control means for executing a mode setting based on the contents of a storage means. 7. A non-volatile first storage means for storing at least one or more current mode states, an input means for inputting a standard setting of at least one or more operation modes, and an input initial setting. And a non-volatile second storage means for storing the operation mode and the operation mode to the standard mode all at once (mode clear, auto clear, auto shut off, etc.), the mode setting is executed based on the contents of the second storage means. , A first mode setting for executing a mode setting based on all the contents of the first storage unit, and a first storage unit only of the contents of the first storage unit not included in the second storage unit Mode setting is executed based on the contents of the above, and other than that, the mode setting is executed based on the contents of the second storage means. A copying machine with a resume function, comprising: a control means for executing the mode setting based on the selected mode setting at the time of N. 8. A non-volatile first storage means for storing at least one or more current mode states, a non-volatile second storage means for storing at least one or more operation mode standard settings, and the first non-volatile storage means. Detects abnormality of storage means and powers on
When there is an abnormality in the first storage means, the second storage means
The mode is set based on the contents of the storage means, and the power is turned on.
A copying machine with a resume function, comprising: control means for executing a mode setting based on the contents of the first storage means when it is determined that the first storage means is normal at the time of N.