JPS59128562A - Image forming device - Google Patents

Abstract

PURPOSE:To perform display and rewriting of status value appropriating sheet number designating keys by alloting serial number to signal values of a flag sensor and an actuator inside of software in an electrophotographic copying machine controlled by a microcomputer. CONSTITUTION:When a serviceman switch is depressed, the control system of a copying machine is changed to inspection mode. Then, a key for inputting number of copy sheets is depressed to designate address number given continuously to sensor, actuator and flag that input and output to a microcomputer for controlling. The number is displayed in lower two digits 202, 203 of the copy number display device, and value of port flag designated by the number is displayed in upper digit 201. When a copy start key 208 is depressed, the status value is reversed, and can be corrected. Increment, decrement and clear of the number are made by an enlarging key 205, and reducing key 204.

Description

Detailed Description of the Invention Technical Field The present invention relates to an image forming apparatus such as a copying machine or a facsimile receiver that is controlled using a microprocessor, and in particular uses a console keyboard, display, etc. to control sensors, actuators, and random access memory (RAM)
This invention relates to an image forming apparatus having a self-diagnosis WIF function that enables detection of the state of the software internal flag above.

Prior Art In conventional devices of this type, the input, output, and software internal flags each have separate address spaces, and are designated by mutually independent addresses (numbers) on the software. Therefore, when performing the same operation such as setting (on) or resetting (off) a certain control target point, different commands are used depending on whether the control target is an input section, an output section, or a software flag. There was the inconvenience of having to allocate it. For example, a ``1 set flag instruction'' is used to manipulate a flag, and a 1 out instruction is used to set an output. Also, limit the effective range of commands, e.g.

The instruction that checks the off state can only specify an input address as an operand. As described above, in the past, the software had an instruction system that lacked consistency.

Furthermore, in the past, when specifying or identifying a control target point, it was done using terminal numbers, actuator numbers, etc. on hardware, and it was done using boat numbers, input/output addresses, bit numbers, etc. on software. It was being done. However, the input/output designated addresses (numbers) on the software do not necessarily match the input and output terminal numbers on the hardware (for example, terminal numbers cannot be numbered repeatedly), and a correspondence table showing the relationship between the two is created. It was necessary to proceed with the work of Depack and others using the system.

Therefore, the applicant has set a unified sequential number (hereinafter referred to as an "ordinal number") that enables common recognition between the hardware side and the software side for the same control target point, and furthermore, control target (hereinafter referred to as “ordinal”)
An address space (hereinafter referred to as "ordinal space") that extends to all operating points of the processor by adding not only input/output controlled points but also flags formed only on software? This makes it possible to easily recognize the correspondence between software and hardware, eliminates restrictions on operand description for thetance instructions, and creates a more efficient and versatile instruction system. proposed a tank control method (Tokugan Sho Sku 1, 1
No. 11).

In other words, the original number here refers to the serial number when input, output, and each point of the software internal flag formed on the RAM are arranged in the same address space by integrating the specified addresses. It is.

On the other hand, when displaying an abnormal condition with a conventional device that has self-diagnosis function 2, it only displays an error hood corresponding to the failure situation as shown in Table 1 below, so it is necessary to judge the details. This required deep knowledge of the characteristics of the equipment, making maintenance management difficult and time-consuming to repair.

Therefore, the applicant proposed an image forming apparatus having a means for calling pre-registered process means and sensing means and executing diagnosis using the above-mentioned original number. However, although this proposed device is convenient for executing a series of operations, it is inconvenient and long-lasting for checking an arbitrary ordinal among many ordinals and performing 0N10FF. .

Therefore, an object of the present invention is to eliminate the above-mentioned drawbacks, and to provide a means for specifying an ordinal and a means for displaying the 0N10FF status of the selected ordinal, thereby making it possible to easily check the system. An object of the present invention is to provide an image forming apparatus that can perform the following steps.

Example Hereinafter, the present invention will be described in detail with reference to the drawings.

FIG. 1 shows the internal structure of the image forming apparatus of the present invention, where l is a photosensitive drum, the surface of which is composed of a three-layer seamless photosensitive member using, for example, a CdS photoconductor. 3 is the primary belt side Ll is the secondary charger, 6 is the transfer charger, 6 is the cleaning device composed of a cleaning roller and an elastic blade, 1 is the developer, 1 is the front exposure lamp, 9 is a full exposure lamp, // and /2 are paper feed rollers, /3 is an upper cassette, /4t is a lower cassette, 7
is a registration roller, /l is a paper detection sensor, /7 is a conveyor belt, 7g is a paper detection sensor, and /9 is a fixing roller.

2 is a main motor 1. 2 is a clutch for moving the optical system forward and backward; 23 is an illumination lamp integrated with the first scanning mirror Koda; No is the first scanning mirror 1.2
B is the third mirror 1.27 is the third mirror, -g is the optical system cooling fan 1.2q is the conveyance fan used to reliably convey the transfer paper, 30-/G is the lens optical system,
3/ is the copy tray - 3-1 and 33 c fixing heater, 3 da is the thermistor, 3 o is the document table glass, 37 and 3 g are the key counters (control counters), f/ is the remaining paper amount detector, and 3 is the ejection The roller, the illusion is the discharge toner container,
Nail is a pipe, Gu 6 is a sorter, and Gua is a paper detection sensor.

V is a document feeder (hereinafter referred to as DF) that transports originals one by one to the exposure position, g/ is a conveyor belt, O is the original, g3 is a pickup roller, H is an ejection sensor that detects whether the original is ejected, and g is 6 is a document presence/absence sensor, V is a DF mode switch that selects the DF mode, 1 is a paper feed tray, and 6 is a leading edge detection sensor that detects the leading edge of paper.

When a copying operation is started by pressing a copy start key, which will be described later, etc., the main motor starts rotating the photosensitive drum l in the direction of the arrow in the figure. When the drum / rotates a predetermined amount, the document g2 placed on the document table glass 36
is illuminated by the illumination lamp 3, and the reflected light is scanned by the first scanning mirror 5t and the first scanning mirror J. At that time, the first
For example, the scanning mirror evaluation and the first scanning mirror code are /://
The optical path length in front of the lens 30 is thereby always kept constant while scanning the document. After the image of the above-mentioned reflected light passes through the lens 3o, the third mirror, and the third mirror 17, it is imaged on the drum l at a predetermined exposure position. At this time, after the surface of the drum is simultaneously neutralized by a front exposure lamp and a pre-static charger, the reflected light image irradiated by the illumination lamp 23 is slit-exposed onto the drum at the above-mentioned exposure position.

At the same time, remove the corona that has the opposite polarity to AC AC or the opposite polarity to the primary charge! ! is carried out using a secondary charger 1, and then a high-contrast electrostatic latent image is formed on the drum 1 by uniform surface exposure using a full-surface exposure lamp. Next, the electrostatic latent image on the photosensitive drum 1 is developed by a developing roller of a developing device 7 to be visualized as a toner image, and the toner partial transfer charger S transfers the toner image onto a transfer paper. At that time, feed the transfer paper in the upper cassette/3 or the lower cassette/g into the copying machine by the paper feed roller//or 7.2,
Since the registration roller 3 sends the latent image toward the photosensitive drum at precise timing, the leading edge of the latent image on the drum can be aligned with the leading edge of the transfer paper at the transfer section. Next, while the transfer paper passes between the transfer charger 5 and the photosensitive drum l, the toner image on the photosensitive drum l is transferred onto the transfer paper.

After the transfer is completed, the transfer paper is separated from the photosensitive drum by a separation belt, guided through a paper detection sensor by a conveyor belt to a fixing roller by a conveyor belt to fix the paper by applying pressure and heat. Thereafter, the transfer paper is ejected to the tray 3/ via the paper detection sensor /g by the ejection roller. In addition, when the sorter 'It is installed, the transfer paper is discharged to each tray of the two tags B via the paper detection sensor. After the transfer is completed, the rotation of the photosensitive drum l is continued as it is, the cleaning device 6 cleans the surface of the photosensitive drum l, and the collected toner is collected in the discharge toner container 4!3 via the vibrator i, and then Move on to the next replication cycle.

Furthermore, when the automatic paper feeding mode using DFtO is selected by the DF mode switch j7, the document g2 placed on the paper feed tray gg is transported to the exposure position by the pickup roller za 3 and the transport belt g. When the document t2 reaches the side light position, the copying operation is started without inputting a copy start key (see FIG. 2), which will be described later. If the DF mode switch g7 is not selected, the user lifts up the DFtO which also serves as a document pressure bonding plate, sets the document g- on the document table glass 36, and starts the copying operation by inputting the copy start key.

FIGS. 2 and 2 show examples of the layout and configuration of the operating section (console panel) of the apparatus of the present invention shown in FIG. -X) 3 is the number of copies displayed on the display panel XtO, and 〃 is a reduced copy? Reduced copy selection key to select, -〇 means enlarged copy? The enlarged copy selection key 20 is a numeric keypad for setting the number of copies, and the number of copies can be set up to a maximum of three digits. , 207 is a clear key for canceling the number of copies set using the numeric keypad λOA, and 9g is a copy start key for instructing the start of copying.

By the way, the above-mentioned various keys 20'l to 20g and the display section θlNλ03 change to the following functions or display contents by switching a serviceman switch (not shown).

That is, the C-digit ordinal number entered using the numeric keypad λθ6 is immediately displayed on the copy number display section 202 and the Co-digit number display section θ3, and when the ordinal is in the ON state, the leftmost copy number display section 201 is displayed.
P'' is displayed, and when the ordinal is in the OFF state, the display section O7 becomes blank.

Also, reduction/enlargement copy selection keys, 201I and 2
Each time you press 05 once, the Ordinal number displayed on the display section -〇- and 203 will change to 6-/'' in hexadecimal notation.
Or 6+l'' is added, and if the button is continuously pressed for 03 seconds or more, the above-mentioned stepping operation is repeated at a cycle of OJ seconds.

As a result, you cannot input using the numeric keypad or 204/6
It becomes possible to place numbers in base numbers (see Tables 2 to 1).

The clear key 207 functions as a cancel key in the same way as usual, and when this key 20 is pressed, the N number displayed on the display sections 20.2 and 203 becomes zero. Copy start key -o
Every time g is pressed seven times, the ON/OFF state of the Ordinal displayed on the display section 201 and 203 is reversed, and if it is continued to be pressed for OJ seconds or more, the above operation is repeated every OJ seconds.

Tables 2 and 3 show examples of the above-mentioned ordinal numbers and their contents in this embodiment. Note that the above-mentioned ordinal number (key number) and address number correspond.

FIG. 3 shows an example of the configuration of the control unit (controller) of the device of the present invention shown in FIG. Reference numeral 2 denotes a driver that buffers the column selection signal from the key board 300 and drives and controls the keyboard matrix circuit l. 30.7 is an OR gate used to generate an interrupt signal no matter which key is pressed, and the interrupt controller (
For example, it is supplied to the input terminal IRQ of g2!9C).

30'l, 30! , 30A and 30 are input/output ports of a microcomputer (for example, !;2!;!;A), to which various input sensors such as a key column select (key column select) abnormality detection sensor and an output actuator are connected.

309 is an IC (integrated circuit) oscillator for basic clock generation, and its output is connected to the input terminal IR' of the interrupt controller.
7. 310 is a micro-pro sensor (CPU, e.g. ZaOg!A) for control;
Sequence control operation is performed by executing the program stored in M (read-only memory for programs) 3/2.

31! 031'6 is a static RAM (RAM) used to temporarily store data generated as the program is executed; 31'6 is a shift register;
12, the serial data supplied from the CPU 310 is changed to serial data, and the programmable LC
D (Liquid crystal display) Controller Dry No. 31
Send to 9. 37g is an LCD driven by the 3/9th dry nozzle. 3 is a D/A that converts the output from output port 3θ to digital to analog.
(Digital Analog) The controller is primary and generates an analog iE pressure to control the brightness of the exposure lamp. Note that the key power from the above-mentioned serviceman switch is supplied to the CPU 310 through the matrix circuit 301 and the key power control boat JOθ to switch to the inspection mode.

Next, an example of the operation of the apparatus shown in FIG. 3 regarding the ordinal display will be described in more detail with reference to the flowcharts in FIG. First, the operator switches the serviceman switch (not shown) to the ordinal display side, and the numeric keypad 2
When the original number is input by 0A, it is activated by the basic clock of the oscillator 309, jumps to step tioo shown in Figure (4), and displays the copy number display section θl.
-The last digit of the value shown in 03 is regarded as the Ordinal number, and the ON/OFF of the Ordinal corresponding to that number is
Write the OFF state to the display buffer RAM 31k. Next, proceed to the step lθ/, and read the display RAM
31! ; Contents i P/S converter 316 and LCD
Transfer serially to the LCD and 3Ig via the controller and 3/9, and display the ordinal 0N10FF status on the display θl at the left end of the display 03 by copying the number of copies of the display 03. After displaying
Return to the routine from which the interrupt occurred.

Also, when the above-mentioned serviceman switch is switched to the ordinal display side, the predetermined key 201IN20
When g is pressed, the key is manually activated and the main routine jumps to step 02 shown in FIG. 1I, where it is analyzed which key was pressed. As a result of that analysis,
When it is determined that the clear key λθ has been pressed, the display section KOQ/~, 203 is cleared to zero at the step flag θ3, and when it is determined that the numeric keypad and 20 O have been pressed, the numerical value of the manual power of that key is set at step 1Ioti. After displaying on the display sections 202 and 203, the process jumps to the aforementioned step Oθ. Further, when it is determined that the enlarged copy selection key 05 has been pressed, step lIo! At f, an addition process is performed by the ordinal number 1/'', and when it is determined that the reduced copy selection key 1I06 has been pressed, the ordinal number is subtracted by ``/'', and it is determined that the copy start key -0g has been pressed. Sometimes the 0N10FF state of the Ordinal is inverted. Thereafter, the program returns to the original main routine from which the interrupt occurred.

In addition, in this example, we used an existing numeric keypad, so it is not possible to directly enter numbers in E-base, but a separate hexadecimal key is provided for maintenance service, so that all numbers in I-base can be entered directly. You may also do so. Further, in this example, the ordinal check console is also used as the user operation console, but it goes without saying that a detachable dedicated check panel may also be used.

Effects As explained above, according to the present invention, there is a means for specifying an ordinal, and an ON/OFF function for the specified ordinal.
Since a means for displaying the OFF state is provided, the details of the failure can be easily determined by checking the software internal flags displayed by these means, reducing the time required for troubleshooting. The effect is that it becomes possible. Further, according to the present invention, the work time required for line checks at a factory during device production is shortened.

[Brief explanation of the drawing]

FIG. 7 is an internal configuration diagram showing an example of the image forming apparatus of the present invention, FIG. 2 is a front view showing an example of the external appearance of the operating section of the apparatus shown in FIG. 1, and FIG. 8 is a control section of the apparatus shown in FIG. 1. A block diagram illustrating an example of the configuration of , and a flowchart illustrating an example of the operation of the control section shown in the third diagram. L...Photosensitive drum, K...Pre-feeding charger, 3...-Secondary charger, G...Secondary charger, ! ...Transfer charger, 6.Cleaning device, 7.Developer, t..Front exposure lamp, D..Full surface exposure lamp, //, /2..Polymerized paper roller, / 3... Upper cassette, /da... Lower cassette, /j... Registration roller, /6... Paper detection sensor, /7... Conveyance belt, 7g... Paper detection sensor, 19.・・Fusing roller, ・・・Cleaning web, ・・・・Main motor 1. 2.2...Forward/reverse clutch, ? N27... Mirror, 3... Optical system cooling fan, Taku... Conveyance fan, 3θ-1 O-da... Lens optical system, 3/... Copy tray 1. 32. ．． 3.3... Fixing heater, 3G... Thermistor, 3A... Document platen glass 1. 77,. 3...Key counter, Kuha...Remaining paper amount detector, Goo...Discharge roller, lI3...Discharge toner container, Da5...Pipe, Sorter for section, Gua...Paper detection sensor , go...Document feeder (DF), E/...
・Transport belt, go...original, g3...pickup roller, glI...ejection sensor, zaj...original ejection table, za6...original presence/absence sensor 1 gri...DF mode switch , gza...paper feed tray, i9...tip detection sensor, 2Qθ...display panel, koθ/~J3...copy number display unit 1.1VII...
-Reduced copy selection key 1.20! ...Enlarged copy selection key 1. 206...key for setting the number of copies, λθri...clear key, 20g...copy start key, 30θ...key manual control boat, 3Ql...keyboard matrix circuit, 30 keys...
・Driver 1. 70.3...Orgate, 30g, 30! ...Input port, 304.307...Output port, 30g...Interrupt controller, 309...Basic clock generation IC oscillator, 3/(7
...CPU (microprocessor), 3/2...R
OM (read only memory), 31S...RAM (random access memory), 311...shift register, 37g...LCD (liquid crystal display), 3iq...
・LCD controller, 3.10...D/A (digital analog) converter, 32/...pass line. Patent applicant: Canon Co., Ltd. 1 Figure 4 (A) (B)

Claims (1)

[Claims] /) Input and output are controlled objects, and each point 'Ii of the controlled object: A unified sequential number obtained by integrating the specified addresses and arranging them in the same address space is defined as V. and in an image forming apparatus with a self-diagnosis function that performs sequence control on the control object using the unified sequential number, a designating means for selecting and designating the unified sequential number, and designating by the unified sequential number selected and designated by the designating means. an image forming apparatus comprising: a display means for displaying an on/off state of the controlled object; 2. The image forming apparatus according to claim 1, wherein a software internal flag is also controlled. 3) The apparatus according to claim 1 or 2, further comprising an inverting means for inverting the on/off state of the controlled object specified by the specifying means. image-forming device. t) An image forming apparatus according to claim 3, wherein the means for specifying the inspection mode assigns a normal image formation instruction key to the specifying means and the reversing means.