JPS6358368A - Abnormality display device for business equipment - Google Patents

Abstract

PURPOSE:To make the occurrence of abnormality easy to understand by displaying the abnormality when it occurs and erasing display elements which are irrelevant to the occurrence of the abnormality. CONSTITUTION:A display part 42 consists of a dot matrix display part DSP1 and a numeral and symbol display part DSP2. The numeral and symbol display part DSP2 is equipped with a 7-segment display device DN1 for copy magnification, a 7-segment display device DN2 for the quantity of copies, a symbol groups size for indicating the size and direction of paper, a symbol group Serr for indicating various abnormalities, a jam display device Sjam, a ready display symbol Sok, a wait display symbol Swat, a copy density symbol Sden, and a service-man call symbol Ssm. If trouble occurs to a copying machine itself, the symbol Ssm blinks and other displays are erased at the same time; and the display part DSP1 displays a message indicating a handling method for the abnormality.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of the Invention] The present invention relates to a front claw device for office equipment such as a copying machine, and particularly to display control when an abnormality occurs.

[Prior Art] For example, the functions of copying machines have recently become more diverse, and accordingly, the number of display functions has also increased. Magnification value 2 Magnification adjustment mode, paper size and paper orientation for each paper feed system, numerous symbols indicating various abnormalities, jam occurrence position, etc.

A large number of items can be displayed, such as symbols indicating ready status, symbols indicating wait status, copy density, density adjustment mode, set number of copies, number of copies, etc.

A display device having such a large number of display capabilities is very convenient for an operator who understands the operation of the device in detail because it allows the operator to grasp the operating status of the device in detail. However, for inexperienced operators, there are too many 5-display contents and it is difficult to know what to do.Especially when a device that was previously operating normally suddenly stops, it is difficult to understand what to do. It is difficult to understand what treatment should be taken to return the condition to normal.

[Purpose of the Invention] An object of the present invention is to provide an abnormality display device for office equipment that provides a display that makes it easy for even an operator who is not familiar with the device to understand how to deal with the occurrence of an abnormality.

[Structure 1 of the Invention In order to achieve the above object, the present invention provides a large number of display elements to perform display according to the operating state and setting state of the office equipment, and when an abnormality is detected,
While displaying the display element indicating the abnormality, all display elements unrelated to the abnormality are erased.

In this way, when an abnormality occurs, only the display element indicating the abnormality is displayed, so that even an inexperienced operator can immediately understand that an abnormality has occurred.

In a preferred embodiment of the present invention, which will be described later, the following is done. When an abnormality occurs, a symbol indicating the abnormality is displayed blinking. In addition, it is equipped with a dot matrix character display and nonvolatile read/write memory, so that when an abnormality occurs,
Information written in advance in the nonvolatile read/write memory is displayed on the character display. The information written in this non-volatile read/write memory is, for example, the contact information of a service person who will repair the office equipment.

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

[Embodiment] FIG. 1 shows one type of copying machine embodying the present invention. This will be explained with reference to FIG. Briefly speaking, this copying machine consists of a copying machine body, an ADF (automatic document feeder) 60. Sorter 70. It is composed of a group of optional units such as an automatic double-sided processing unit 80. 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 machine, and the third paper feeding system is the second paper feeding system.
A paper feed unit 170 and a third paper feed unit 180 including a fourth paper feed system and a fifth paper feed system are connected to the main body of the copying machine. 21, 22, 23 and 24 are cassettes provided in the first paper feeding system, second paper feeding system, third paper feeding system and fourth paper feeding system, respectively, and 25 is a tray of the fifth paper feeding system. be.

A contact glass 1 on which a document is placed is provided at the top of the main body of the copying machine, and 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 3
5. A fourth mirror is provided with a 36° slit 37, etc. When performing document reading scanning, a first carriage carrying an exposure lamp 31 and a first mirror 32 and a second carriage carrying a second mirror 33 and a third mirror 34 are arranged in two positions so that the optical path length does not change. Mechanically scan-driven at a relative speed of 1. The lens 35 is a zoom lens, and its magnification can be changed by driving a motor.

Therefore, the light emitted from the exposure lamp 31 is transmitted to the first mirror 32.
．． Second mirror 33. Third mirror 34. Lens 35. Fourth
Through the mirror 36 and the slit 37, the photosensitive drum 2
imaged on top.

Around the photoreceptor drum 2, there are a main charger 3 and an eraser 4. Developing device5. Pre-transfer static elimination lamp 6, transfer charger 7, separation charger 8. It is equipped with a dangling unit 9, etc.

The image reproduction process will be briefly explained. The surface of the photosensitive drum 2 is uniformly charged to a predetermined high potential by the discharge of the main charger 3. The charge in the portion not used for image reproduction is erased by the eraser 4. When the charged surface of the photoreceptor drum 2 is irradiated with reflected light from the original, the potential of that part changes (decreases) depending on the intensity of the irradiated light.
The photosensitive drum 2 rotates in the direction shown by the arrow in the figure.
In synchronization with this, the optical scanning system 30 sequentially scans the document surface, so that a potential distribution corresponding to the density (light reflectance) distribution of the document image, that is, an electrostatic latent image, is formed on the surface of the photoreceptor drum 2. Ru.

When the portion on which the electrostatic latent image is formed passes near the developing device 5,
The toner in the developing device 5 is attracted to the surface of the photoreceptor 2 according to the potential distribution, thereby developing an electrostatic latent image, and a visible image corresponding to the electrostatic latent image is formed on the photoreceptor drum 2. Ru. 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 a registration roller 27 at a predetermined timing so that it overlaps the surface of the photosensitive drum 2.

Then, the transfer charger 7 transfers the visible image (toner image) on the photoreceptor drum 2 to the recording sheet side, and the separation charger 8 separates the recording sheet to which the visible image has been transferred from the photoreceptor drum 2. The recording sheet separated by 0 is conveyed to a fixing device 12 by a conveyor belt 11. Fixation f! 12, the toner image on the recording sheet is
The image is fixed onto the recording sheet by the heat in the fixing device 12.

After fixing, the recording sheet passes through a predetermined paper ejection path.
The paper is discharged to the sorter 70 or the automatic duplex unit 80.

An operation board 203 is provided on the top surface of the copying machine main body in FIG. The outline of the overall appearance of this operation board is shown in Section 2a.
Referring to FIG. 2a, this operation board 20 is shown in FIG.
3 is roughly divided into an operation section 41, a display section 42. It consists of a special function operation section 43 and a clip placement section 44.

The operating section 41 and the special function operating section 43 each include:
Hidden lids 51A and 51B are provided that cover the operation surface and can be opened and closed. In addition, FIG. 2a shows a state in which the hidden l51A asks a question.

These hidden parts 51A and 51B are made of synthetic resin and are semitransparent. Therefore, the hidden lids 51A and 51
Although it is not clearly visible when B is closed, by approaching the operation board 203, the operator learns that there is a key switch inside the hidden cover of the i-subject section 41 and the special function operation section 43. be able to.

A cross section of the operating portion 41 is shown in FIG. 2b. See Figure 2b. The housing 50 of the operation board has a recess 50a at the operation section 41, and the operation sections of a large number of key switches are exposed in the recess.

That is, the key top 55 is inserted into the hole 50b formed in the recess 50a.
is arranged, and the lower end 55a of the key top is in contact with the switch 54. The switch 54 is a print base [5
3 is soldered and fixed.

The hidden l51A is arranged above the recess 50a. A protrusion 51b formed at the rear end (left end in FIG. 2b) of the hidden i51A engages with a groove (not shown) formed in the housing 5o along the axial direction of arrow A, and the hidden i! It supports the rear end of 51A. The tip of the hidden l51A has 5 recesses 50
The upward force is received by a leaf spring 58 attached to one end 50c of a, and the protrusion 5]a formed in the vicinity comes to rest at a position where it engages with the housing 50.

Therefore, when force is applied to the tip of the hidden lid 51A in the six directions of arrows, the tip is disengaged from the housing 5o. In this state, if a force in the direction of arrow B is applied to the hidden lid 51A, the hidden E
The tip of i51A moves below the housing 50, the rear end moves in the direction of the arrow along the groove, and the hidden M5]A exposes the recess 50a to the outside.

When the hidden 151A is fully opened, the protrusion 51a at its tip
A switch SWI is placed at a position where it comes into contact with the switch SWI. This switch SWI is fixed to a printed circuit board 53 via a relay plate 56.

The appearance of the inside of the hidden cover 51A of the operation section 41 and the inside of the hidden cover 51B of the special function operation section 43 are shown in FIGS. 2c and 2d, respectively.

Referring to FIG. 2c, the operation unit 41 includes a mode clear key Kl and an interrupt key 2. 3 to print start key
．． 4 on the guidance key. @5 to confirm number key. Numeric keypad K
T, clear key KC, density down key 6. 7. To the density up key. Press 8 on the density adjustment mode key. 9 on paper selection key
．． A copy magnification up key KIO, a copy magnification down key Kll, and a copy magnification equal key 12 are provided.

Note that keys 2 and 3 are equipped with indicator lamps.

Briefly explain the function of each key. Key 1 clears various setting states to predetermined standard states.

Key 2 is used to temporarily store the operating state and setting state and recall the stored state when interrupt processing is to be performed by interrupting the copying process. Key 3 is used to start the copying operation. 5 on the key.

Switch between the mode that displays the function of each key and the normal mode. The key KT generates a numerical value such as the number of copies.

Key KC clears the generated value or stops the copy operation. Keys 6 and 7 change the copy density in the down and up directions, respectively. Key 8 selects either automatic mode or manual mode for copy density adjustment. Key 9 switches the selection of the paper feeding system that feeds the recording paper. Keys KLO and Kll switch the selection of copy magnification. 12 on the key sets the copy magnification to 1
Set to 00%.

In other words, the keys provided on the operation unit 41 are all keys that are used very frequently. Furthermore, if the copying work is simple, all the operations can be performed using only the keys provided on the operation unit 41.

Referring to FIG. 2d, this operation section 43 has a trimming key 21. 22 degrees to the masking key, 23 degrees to the binding margin w14, and the alignment key. 24 degrees to the page continuous copying key, 25 degrees to the centering key. 26. to the frame erase key. 27 in the program key. Paper selection mode: 28° for the single-sided key; 297 for the single-sided key; 30° for the double-sided key. 31. Book manuscript key. 32. to the magnification adjustment mode key. 33. to zoom up key. 3 on zoom down key
4. 35. for the sort/stack key. 36 is provided for the stable/collate key and 37 is provided for the ADF/5ADF key. Also, one or two indicator lights are provided near most keys.

Briefly explain the function of each key. 21 on the key. 22 and 23 are related to editing functions, and enable the function to copy only a specific area of the document, the function to copy an area excluding a specific area of the document, and the function to create margins at the edges of the copy, respectively. / Turn off.

24 on the key. 25 and 26 relate to copy processing functions, and each function continuously copies each page of a two-page manuscript onto one-page recording paper.

Turns on/off the function of positioning the reduced original image in the center of the recording paper and the function of forming a margin around the copy.

Keys 27 store and recall specific settings.

Key 28 switches between automatic paper selection mode and manual mode. In automatic mode, paper is automatically selected according to the original size and copy magnification.

29 on the key. 30 and 31 are related to double-sided copying, respectively. Function 9 copies two single-sided originals onto both sides of recording paper. Function 9 copies both sides of a double-sided original onto both sides of recording paper. Turns on/off the function that copies pages and right pages onto both sides of the recording paper.

32 on the key. 33 and 34 are related to the copy magnification, and are used to switch the magnification adjustment mode, zoom up, and zoom down, respectively.

35 on the key. 36 and 37 are for selecting operations of various optional devices installed in the main body of the copying machine.

That is, the key 35 switches the operation mode of the sorter 70 to one of the normal mode, sort mode, and stack mode. The key 36 is the automatic document feeder [! 160 operation mode.

A key 37 switches the operation mode of a paper processing device (not shown).

The appearance of the display section 42 (state 1 with all displays turned on) is shown in FIG. 2e. Referring to FIG. 2e, this display section 42
consists of a dot matrix display section DSP1 and a numerical value/symbol display section DSP2. In this example, the dot matrix display section DSPI displays arbitrary characters (numbers, alphabets, katakana,
It is a liquid crystal display that can display 40 symbols). The numeric/symbol display section DSP2 includes a 7-segment display DNI that displays the copy magnification as a 3-digit number, and a 7-segment display DN2.
7-segment display DN3 that displays the number of copies, etc. in 3-digit numbers. A symbol group 5size indicating the paper size and orientation of each paper feed system, a symbol group 5err indicating various abnormalities,
It is provided with a jam indicator Sja+* for displaying the jam occurrence position, a ready display symbol Sok + a unit display symbol Swashi + a copy density symbol 5den + a serviceman call symbol Ss+s, and the like.

To explain the display when an error occurs, 1. If an error occurs that is not a failure of the copying machine itself, such as no toner, 9 out of paper, or a jam, an ordinary user can repair the error relatively easily. , Error is displayed to inform the operator of what abnormality has occurred.

When a failure occurs in the copying machine itself, the symbol Ss+s blinks and at the same time the DSP
All displays except symbol Ssm No. 2 are erased, and a message indicating how to deal with the abnormality is displayed on the display section DSPI. That is, the DSPL displays an indication "Serviceman Call" 9 indicating that it is necessary to call a serviceman, the code No. of the abnormality that has occurred, and the contact telephone number of the serviceman.

Since a failure of the copying machine itself cannot be repaired by the user, such a display is provided, and by erasing all displays unrelated to the occurrence of an abnormality, it becomes easier for the user to recognize the occurrence of an abnormality.

A cross section of the clip mounting portion 44 is shown in FIG. 2g.

Referring to FIG. 2g, in the opening of the housing 50, there are two
Two hidden M61 and 62 are arranged.

The hidden Bodhisattva 61 is fixed to the housing 50 with screws 63, and can be removed (that is, semi-fixed) by removing the screws 63. The hidden lid 62 is supported by the housing 50 with one end 62a sandwiched between the housing 50 and one end 61a of the hidden lid 61, and is rotatable about the one end 62a. In other words, the hidden lid 62 can be opened and closed.

A permanent magnet plate 62b is arranged on the surface of the hidden lid 62. Therefore, when a metal clip or the like is placed on the hidden MB 2, it is attracted to the hidden lid 62.

A 4-bit DIP switch (dual in-line package type switch) SWD is arranged inside the hidden i61. This switch SWD is connected to the printed circuit board 5
It is soldered to 3.

This switch SWD is operated by a service person during maintenance, and has the following functions in this example.

Bit 1 Turns on/off the run-in operation Bit 2: Auto clear function on/off Bit 3: Turns the buzzer sound output function on/off Bit 4: Turns the monitor display function on/off. A sticker 61 displaying the same explanation as the above functional explanation
b is pasted onto the hidden lid 61.

Since this explanation is hidden by the hidden M62, it is not visible to general users, but it is useful for service personnel when performing maintenance.

FIG. 3 shows an outline of the electric circuit configuration of the copying machine shown in FIG. 1. Referring to FIG. 3, the main control device is composed of a microcomputer unit 100. This microcomputer unit 100 includes a microprocessor 110. Read-only memory (ROM) 120. Read/write memory (RAM) 130. I10 port 140.
An A/D converter 150 and a driver 160 are provided.

This main controller includes an automatic document feeder 60. Sorter 70
．． Operation board 203. Optical system control unit 204, high voltage power supply unit 205. Motor control unit 206. Heater control unit 207. Solenoid control unit 208
．． Relay control unit 209 and sensor unit 210
is connected.

The electrical circuit of the operation board 203 is shown in FIG. 4a.

Referring to FIG. 4a, the operation board 203 includes a microcomputer 310. Read-only memory 360, non-volatile read-only memory 330. Drivers 320, 340, and 350 are provided, and the dot matrix display section DSPI of the display section 42 is connected to the microcomputer 310 via the driver 340, and the numerical/symbol display section DSP2 is connected to the microcomputer 310 via the driver 350. There is. The key switch matrices provided in the operation units 41 and 43 are directly connected to the microcomputer 31, and the light emitting diode display is connected to the microcomputer 31 through the driver 320.
Connected to 0.

In the non-volatile read/write memory 330, data for a message (for example, the content shown in FIG. 2F) to be displayed on the display DSPI in the event of a failure of the copying machine itself is registered in advance in accordance with the conditions of each user. In addition to the program data of the microcomputer 310, the read-only memory 360 stores in advance fixed information data such as messages explaining the functions of various keys.

The microcomputer 310 is connected to the main controller microcomputer 100 via a serial bus, and is connected to the microcomputer 100 via the serial bus.
Various display processes such as abnormality display are performed according to the data sent from 00, and data corresponding to key human power is sent to the microcomputer 100.

Figure 4b shows the electrical circuit of the power supply system. Referring to Figure 4b, in this example two power supply units 211.21
It is equipped with 2. The input terminal of one power supply unit 211 is connected to the commercial power line (AClooV) via the electrical contacts of the main switch MSW and main relay RLI, and the input terminal of the other power supply unit 212 is connected to the commercial power line (AClooV) via the main switch MSW and main relay RLI. Connected to commercial power line.

The power supply unit 212 generates DC power (Vcc) that is supplied to electrical circuits with relatively low power consumption such as the microcomputer unit 100, and the power supply unit 211 generates DC power (Vcc) that is supplied to electrical circuits with relatively low power consumption such as the microcomputer unit 100. ) is generated. Main relay RLI is on/off controlled by microcomputer 100.

When the main switch MSW is turned on, the microcomputer 100 turns on the relay R according to the state of the switch SW1.
Controls LI on/off. In other words.

When the hidden cover 151A is closed, the switch SWI is turned off, turning off the relay RLI, and when the hidden cover 5IA is open, the switch SWI is turned on, turning on the relay RLI.

That is, when the hidden cover 51A is closed, the power supply to everything other than the heater control unit 207 and the microcomputer 100 is cut off, and the power saving mode is entered.

In this mode, the fixing heater is controlled, but the control target value of the heater temperature is set to a lower state than during operation.

The configuration of the heater control unit 207 is shown in FIG. 4c. Referring to Figure 4c, this circuit includes a thermistor THI
, ) - transistor Trl, solid state relay 5S
It is equipped with RI, operational amplifier OPI, inverter IN1, etc. A thermistor TH1 is disposed within the fixing device 12 and detects the temperature of the fixing roller. The operational increaser OP1 controls the solid state relay 5SRL to turn on/off depending on the magnitude of the voltages Vv and Vs applied to the two input terminals, and turns on/off the current supply to the fixing heater HET.

The resistance value of the thermistor THI tends to decrease as the temperature rises, as shown in Figure 4d.

Therefore, when the voltage Vs is constant, when the fixing temperature drops below a certain set temperature, it becomes V v ) V s and 5S
When the RI is turned on and the heater HET is energized and the fixing temperature exceeds the set temperature, V v < V s and 5SRI is turned off and the heater HET is energized.

When the switch SWl is on, the output of the inverter INI becomes a high level H, the transistor Tri is turned off, and the voltage Vs becomes a relatively low level. Therefore, the heater HET is turned on/off when the voltage Vv is at a relatively low level.

When the switch SWI is off, the output of the inverter INI becomes a low level L, the transistor Tri is turned on, and the voltage Vs becomes a relatively high level. Therefore, the heater HET is turned on/off when the voltage Vv is at a relatively high level.

That is, when the switch SW1 is off, the temperature control operating point becomes Pl in FIG. 4d, so the temperature of the heater HET is low; when the switch SWI is on, the operating point becomes P2, so the temperature of the heater becomes high. The temperature at the operating point pt is the mouth vibration temperature during preheating, and the temperature at P2 is the temperature at which a copying operation is possible, that is, a fixing process is possible.

Therefore, when the cover 51A is closed, the heater control is in a preheating standby state, and when the cover 151A is opened, the heater control is in a normal standby state.

Note that the voltage Vv is abnormal (thermistor THI is disconnected).

In order to monitor the presence of heater disconnections, abnormal temperature rises, etc.),
It is applied to an analog input terminal of A/D converter 150. In addition, the signal 5 corresponding to the on/off of the switch SWI
TBY is I1 of the microcomputer unit 100
0 port 140.

In FIG. 5a, a microcomputer unit 100
Please refer to FIG. 5a, which shows the schematic operation of. When the power is turned on, initialization is performed first. That is, the relay RLI is turned on, which clears the contents of the memory, clears the input/output ports, sets initial values for various parameters, sets various timers, and sets 2 interrupt modes.

Next, the process proceeds to standby mode, in which standby processing S1 and standby diagnosis processing S2 are repeatedly processed. In the standby process S1, the states of switches, sensors, etc. connected to each input port of the I10 boat 140 are read, the level of the signal applied to each analog input port of the A/D converter 150 is converted, and the results are read. The information read in the above processing is processed and determined, and based on the results, output device control 9 display control 7 communication control, etc. are performed.

When data is sent from another unit such as the operation board 203, a communication interrupt process (not shown) is executed to receive the data and perform processing according to the received data.

If switch SW1 is off (hidden M51A is closed), relay RLI is turned off.

In the standby diagnostic process S2, the presence or absence of various abnormalities and the type of abnormality are determined. For example, if the voltage Vv shown in FIG. 4C is Δ/D
It is read through converter 150 to determine its level. That is, if Vv is at a very high level (Va or higher), it is determined that the thermistor THI is disconnected, and if Vv is at a very small level, it is determined that the thermistor THI is short-circuited, and even if a predetermined period of time has passed after the power is turned on. , Vv level is equal to or higher than a predetermined value (but lower than Va), it is determined that the fixing heater HET is disconnected.

The above abnormality is a failure of the copying machine itself and cannot be repaired by a general user. Therefore, in order to distinguish it from other abnormalities, the flag FO is set to rr 1 , . When an abnormality that can be handled by a general user occurs, such as out of paper, out of toner, jam, etc., the flag FO is set to "0".

In this standby mode, the state of the DIP switch SWD is read and various functions are switched according to the result.

In this standby mode, when there are no abnormalities, each part of the apparatus is ready for copying (for example, the fixing temperature is within a predetermined range), and 3 is turned on in the start key on the operation board 203, the process proceeds to the secondary copy mode.

In this copy mode, the copy processing 4S5 and the copying diagnostic processing S6 are repeatedly processed. In copy processing S5,
A commonly known copier copying process is carried out. That is, in synchronization with the rotation of the photoreceptor drum 2, ifigim feed control, optical semi-control scan control, exposure lamp control, paper feed system control, high voltage power supply control, paper discharge control, etc. are executed at predetermined timings. Note that in the copy mode, processes corresponding to changes in the state of various key switches and switches swt and swo on the operation board, except for the clear/stop key KC, are prohibited.

In the copying diagnostic process S6, the presence or absence of various abnormalities and the type of the abnormality are determined similarly to the standby diagnostic process S2.

However, the contents of the diagnosis are different. That is, items that can be detected only when executing the copy process, such as exposure lamp lighting abnormalities and sensor status abnormalities at each process timing, are diagnosed, and in order to reduce the processing content, items that can be diagnosed during standby mode are omitted.

In this copy mode, there are no abnormalities, and the number of copied sheets is Nco.
When py matches the number N5ej set in advance on the operation board, the mode shifts to the primary post-copy mode.

In post-copy mode, the number of ejected sheets Nexh is the set number of sheets N.
The post-copy process S9 is repeatedly executed until the copy matches the set. In post-copy processing S9, various paper ejection sensor status readings, cleaning processing, copy stop processing, etc. are executed.

If an abnormality is detected in the standby diagnostic process S2, the process proceeds to step S1.
2, if an abnormality is detected in the copying diagnostic process S6, the process passes through the abnormality process Stt in step Sll and proceeds to step S1.
In the abnormality processing Sll proceeding to step 2, various stop processing is executed to interrupt the copy process in progress.

In step S12, the state of the flag FO is checked to determine whether the abnormality has occurred in the apparatus itself.

If there is an abnormality in the device itself, that is, if the flag FO is II I 11, the process proceeds to step S13; otherwise, the process proceeds to step S16.

In the case of an abnormality in the device itself, first a blue routine SL3 is executed to display a serviceman call. In this routine, the serviceman call symbol 5SI11 is displayed blinking.9
Next, display erasure processing S14 is executed.

In the display erasing process 314, the numerical value/symbol display section DSP
2, the zero-order message display process 315 is executed to erase all displays other than the symbol Ssm. In this process, message information stored in the nonvolatile read/write memory 330 in advance is read out and displayed on the dot matrix display section DSPI on the operation board. DSPI
A code N is assigned in advance according to the type of abnormality.
o.

are displayed at the same time. In this example, the memory 330;
Serviceman call” and “Renrakusaki device 03
-777-8111" is stored.

"No, l 6" means that the code No a is 16
Indicates that an abnormality has occurred. Therefore, the operation board 20
The display contents of the display section 42 on the top 3 are as shown in FIG. 2f.

The contents of the serviceman call display routine will be explained (see Fig. 5b).This process 1 is repeatedly executed as described later. At the beginning of a, the flag F1 is NO11. If Fl is #J I 11, first set a predetermined display blinking timer to 0.3 seconds and start it. Then, the flag F1 is set to "1" and the symbol 5sra is displayed. In the second and subsequent processes, since the flag F1 is l'', a timeout of the timer set to 0.3 seconds is checked. If a timeout occurs, the following process is executed. First.

Restart the timer and check flag F2.

F2 is II O+! If so, set it to II I IF to erase the display of symbol Ssm. F2 is '1
”, it is cleared to “0” and the symbol 5S11 is displayed. Therefore, by repeatedly executing this subroutine S13, the symbol Ss is displayed at a cycle of 0.6 seconds.
m is displayed blinking.

Referring again to Figure 5a. If the abnormality that has occurred is not a failure of the device itself, a display is made in accordance with the abnormality in step 816, and a message is displayed on the DSP 1 in step 317. That is, in step 816, one or more of the error symbols S_err is displayed depending on the type of abnormality (no toner, door open, two jammed sheets are missing, etc.), and S_ERR is displayed.
At step 17, the message information stored in advance in the address associated with the type of abnormality in the read-only memory 360 is read out and displayed on the DSPI.

Also, regardless of the state of flag FO, abnormal standby processing 3
Execute step 18. In this process, the presence or absence of an abnormality is repeatedly determined for the check item in which the abnormality has occurred. As a result, if the status has not returned to normal, the above process is repeated. If the process returns to normal, proceed to standby mode processing.

FIG. 6 shows the external appearance of the special function operation section 43B of the operation board of one modified embodiment.
The key switch group of 3B is divided into 1 editing key, processing key, special key, double-sided key, magnification key, and option key group according to their functions (same as Fig. 2d). Hidden M that covers the key switch (corresponds to the hidden lid 51A of the above embodiment) 81, 82, 83, 8
4°85 and 86 are provided. The surface of each hidden cover displays the function of the key group it covers.

Each hidden lid has a support structure similar to that of the hidden lid 51A of the previous embodiment, and can be opened and closed independently. Therefore, for example, when changing the operation mode of the sorter 70, the hidden cover 81
, 82, 83, 84 and 85 closed, cover 86
All you have to do is open it and operate the key switch 35.

FIG. 7 shows an operating section 41B in another modified embodiment.
(corresponding to 41 in the above embodiment), in this example, a protrusion 51 Ca is provided at one end of the hidden lid 51C.
is formed, and a switch SW2 (corresponding to the above-mentioned SWI) is arranged at a position where the tip of the switch contacts. Therefore, in this example it is hidden! ! When 51G is fully closed, protrusion 51Ca presses switch SW2 to turn off SW2,
When the hidden cover 51G opens a little, the protrusion 51Ca separates from SW2 and turns on SW2. The other configurations and operations are the same as in the previous embodiment.

2 In the above embodiment, when a failure occurs in the copying machine itself, the special graphic symbol Ssm is displayed blinking, but when an abnormality is displayed on the display unit DSPI as shown in Fig. 2f, , Ss+s may be omitted.

In that case, for example, it is preferable to blink the display ``Serviceman Call'' on the display unit DSPI.

In addition, in the embodiment, a different display from the conventional one is displayed only when a failure occurs in the copying machine itself; may be displayed and some or all of the other display may be erased.

As described above, according to the present invention, when an abnormality occurs, the abnormality is displayed and display elements unrelated to the abnormality are erased, so even an inexperienced operator can understand the occurrence of the abnormality. Easy and appropriate treatment.

[Brief explanation of drawings]

FIG. 1 is a front view showing the internal structure of one type of copying machine embodying the present invention. 2a is a plan view showing the entire operation board of the copying machine of FIG. 1. FIG. Figures 2b and 2g respectively represent the Hb of Figure 2a.
-II b sectional view and IIg -Hg line sectional view. 2c and 2d respectively show the operation section 4 of FIG. 2a.
1 and 43 are plan views showing a state in which hidden covers are removed. FIGS. 2e and 2f are plan views showing display examples of the display section 42 of the operation board shown in FIG. 2a. FIG. 3 is a block diagram showing the configuration of an electric circuit of the copying machine shown in FIG. 1. FIG. 4a is a block diagram showing the electrical circuit configuration of the operation board 203 of FIG. 3. FIG. 4b is a block diagram showing the power supply circuit of the copying machine of FIG. 1. FIG. 4c is an electrical circuit diagram showing the circuit configuration of the heater control unit 2.7 of FIG. 3. FIG. 4d is a graph showing the characteristics of the thermistor THI of FIG. 4c. 5a and 5b are flowcharts showing the general operation of the microcomputer unit 100 of FIG. 3. FIG. FIG. 6 is a plan view showing a modification of the special function operation section 43;
FIG. 7 is a cross-sectional view showing a modification of the operating section 41. 1: Contact glass 2: Photosensitive drum 3: Main charger 4: Eraser 5: Developing device
7: Transfer charger 8: Separation charger 30: Optical scanning system 31: Exposure lamp 41: Operation section 42: Display section 43: Operation section for special functions 44: Clip mounting section 50: Housing 51A, 51 B, 51C: Hidden lid 51a, 51b: Protrusion 53 Niblint board 54: Switch 55: Key top 58: Leaf spring 61.62.8
1 to 86: Hidden lid 63: Screw 100: Microcomputer unit (1 electronic control means) 207; Heater control unit 211.212: Power supply unit 330: Nonvolatile read/write memory SWI, SW2: Switch SWD: DI F switch RLI: Relay THI: Thermistor SSR: Solid state relay HET: Fixing heater OPl: Operational amplifier DSPI
: Dot matrix display section DSP2: Numerical/symbol display section 5size, Sok, 5den, Swat Nishinpol (first display means) Ss ■ Nishinpol (second display means) MSW: Main switch 43B Sae 4b diagram

Claims (5)

[Claims] (1) Office equipment; a first display means that includes a plurality of display elements that indicate the operating status and setting status of each part of the office equipment; a second display unit that includes a display element that indicates an abnormal state of the office equipment; and The office equipment is controlled to display each display element of the first display means according to the operating state and setting state of the office equipment, and when an abnormality occurs in the office equipment, the first display element is displayed according to the abnormality. An abnormality display device for office equipment, comprising: electronic control means for controlling the display of display elements of the second display means, and controlling at least some of the display elements of the first display means to be in an erased state. (2) The electronic control means blinks the display element of the second display means when an abnormality occurs in the office equipment.
An abnormality display device for office equipment according to claim (1). (3) The second display means includes a message display element, and when an abnormality occurs in the office equipment, the electronic control means displays a method for handling the abnormality on the message display element. An abnormality display device for office equipment as described in paragraph (1). (4) The second display means includes a message display element; the electronic control means includes a non-volatile read/write memory means, and when an abnormality occurs in the office equipment, reads out the contents of the non-volatile read/write memory means; An abnormality display device for office equipment according to claim 1, wherein information corresponding to the content is displayed on the message display element. (5) The abnormality is a failure that occurred in the office equipment itself;
Claims (1), (2), and (3)
Abnormality display device for office equipment as described in paragraph or paragraph (4).