JPS59125754A - Copying device - Google Patents

Abstract

PURPOSE:To reduce the designing period of various copying machines using microprocessors and to improve reliability by providing a sub-routine control table to a microprocessor and skipping the sub-routine when the data is referred to at the timing for executing each sub-routine and when the said data is non-executable. CONSTITUTION:A program by which the setting and displaying of copying states, copying in one or both side mode, copying in double recording mode, etc. are controlled is stored in the ROM of a microcomputer unit 61. A main routine refers to the execution status of a sub-routine A and the content of a status register, judges whether the present status is in the state of executing the sub-routine A or not, and advances to the sub-routine when the status data is executable and the state data making the content of the status register executable is stored. The main routine skips to the judgement for whether the next sub-routine B is executable or not when the read- out data indicates the non-executability or the content of the status register is not executable. The main routine and the sub-routines are fixed and the sub-routine control table is changed with models of machines, whereby plural kinds of copying machines having different operation modes and functions are designed in a short period with high reliability.

Description

[Detailed Description of the Invention] ■Technical Section 11 The present invention relates to a copying machine, and particularly to a microcomputer (
The present invention relates to a copying machine which is equipped with a central controller (microprocessor) as well as a roll unit, and which performs operation reading of an operation board, reading of the status of each copying element, copying sequence, and operation control of each copying element.

■Prior art In conventional copying machines of this type, each copying process element and copying sequence are determined for each model, and there is little commonality between different models, especially the copy control program of the microprocessor is shared between different models. Can not. Therefore, a different program is designed and debugged for each different type of machine, which requires a long period of time to design a microprocessor and requires a lot of effort. Also, the depacking period is long. If debugging is simplified and the period is shortened, reliability becomes an issue.

(1) Purpose The present invention has been made with the object of shortening the design period and ensuring reliability of each type of copying machine using a microprocessor.

■Structure In order to achieve the above object, the present invention uses a plurality of machines that have different models, or different equipment elements and functions, but with some differences in equipment elements and/or functions, and similar skeletons. The model.

A group of copiers that can be shared has the same microprocessor as a copier that has all the equipment and functions, and is equipped with a subroutine management table that indicates whether or not each subroutine can be executed. Depending on the data, and when each subroutine is executed, the data is referenced at the timing, and if it is possible, the subroutine is entered, and if it is not, the subroutine is skipped. The configuration is such that only the subroutines associated with the functions are executed. According to this, for example, models with double-sided copying store data that enables the execution of a subroutine for double-sided copying in a subroutine management table, while models without double-sided copying store data that indicates that this subroutine cannot be executed. The main routine can be shared with a small amount of work each time. Therefore, for multiple types of copying machines,
Since it is only necessary to completely complete the main routine and subroutines of one model with all the equipment, the design period for each model can be greatly shortened and high reliability can be achieved.

The present invention will be described in detail below with reference to embodiments shown in the drawings.

FIG. 1 shows the structure of a mechanical section of an embodiment of the present invention. 1st
In the figure, B is the document conveying device, which automatically transports the document onto the contact 1-glass every time a document is set manually, and automatically transfers the document to the contact 1-glass by setting one or more documents. mode of transport on glass, and
It has a mower 1 which uses the document conveying device as a pressure plate.

A is the main body of the copying machine, where images are created.

In the copying machine A, the drum 20 is a photoreceptor using a selenium photoconductor, and is rotatably supported by a shaft 50, and rotates in the direction of the arrow in response to a copy command or the like.

A heater is installed inside the drum to control charging characteristics.

Before the drum 20 rotates, a static elimination lamp 33. Pre-transfer lamp, separation charger, transfer charger 30. Erase lamp 29. and drives the cleaning device 32.

In this example, the cleaning device 32 is operating under the power-on condition. However, it may be configured to operate at the above timing. As a result, the drum 20 after passing through the static elimination lamp
The leading edge of the image to be rotated is the part after the position passing the cleaning device 32 by the control unit. When the drum 20 rotates to the normal position, the document placed on the contact glass 15 is scanned by the first scanning mirror 16 and the halogen lamp 2.
The optical scanning is performed by the first carriage 6, which is now identical to the first carriage 6.

The reflected light image is the first mirror 16. 2nd mirror 17° 3rd
Mirror 18. Lens 14. The image is formed on the drum 20 via the fourth mirror 19. Main charger 2 on drum 20
After being charged by 8, unnecessary portions are illuminated with light by an erase lamp 29, and an image frame suitable for the transfer paper or projected image is created. Then, based on the reflected light image,
A latent image is created on the drum.

At this time, in order to obtain an image of the same size, the speed of the drum 2o and the speed of the first carriage 6 at which the image is torn open are suitable. The latent image on the drum is visualized as a toner image by the developing section 26. At this time, by applying a potential (for example, +) to the developing section, a dark or light image can be obtained.

The recording paper in the first paper feed tray 37 or the second paper feed tray 38 is fed by the paper feed roller until the paper detection is activated.

Next, the paper feed roller is driven again, and the transfer paper is sent to the registration roller 43 which has been stopped in advance, and the registration roller 43 is driven at the timing when the leading edge of the toner image on the drum 20'' matches the leading edge of the transfer paper. . The henna image on the drum 20 is transferred onto a transfer paper by a transfer charger 30. At this time, the surface of the drum is very smooth, so the tram 2
0 and the transfer paper are strong, so the potential of the transfer paper is lowered by a separation charger, the adhesion is reduced, and the paper is separated by a coarse comb, and the paper is sent to the fixing section 34 by the conveyor belt 52, where 1- Heat and pressure are applied to the paper to make it adhere to the paper, and the paper is ejected to the paper ejection tray.

Since a small amount of 1-ner remains on the surface of the 1-lamb 20 after transfer, the pre-cleaning charger (-discharge) is energized, the brush blade cleans the 1-lam surface, and the charge is applied to the next static elimination lamp. (Static charge can be removed using a lamp, LED, or EL.)

(You can also use AC power). Then proceed to the next cycle. These controls mainly involve pulses generated in synchronization with the rotation of the drum or drum 20 after transfer to drive the drum.
Since there is a small amount of toner remaining on the surface of the 1-ram, the pre-cleaning charger (-discharge) is activated, the brush blade cleans the 1-ram surface, and the next static elimination lamp makes the surface potential constant. (The method for removing static electricity is to use a lamp, LED,
E.L.

(A or C power supply may also be used). Then proceed to the next cycle. These controls may be performed mainly by pulses generated in synchronization with the rotation of the drum or by reference pulses for driving the drum.

When single-sided copying is set, the recording paper sent to the fixing device 34 is sent out to the M1' paper tray 58 through the ejection port after passing through the fixing device 34.

When double-sided copying is set, in the copy operation in response to the odd-numbered copy start, the recording paper sent to the fixing unit M34 passes through the fixing device 34, and then is transferred to the reversing conveyance path 59 by the conveyance direction control roller 35. Then, it is sent to the buffer 1 through the conveyance path of the ray 367\, and then sent to the buffer tray 36.

In a copy operation in response to an even-numbered copy start,
The recording paper on the buffer tray is sent to the transfer unit, and the recording paper sent to the fixing device 34 after the transfer is transferred to the fixing device 34 &
After that, the paper is sent out to the paper ejection tray 58 through the ejection port, as in the case of one-sided copying.

When double copying is set, in the copying operation in response to the odd-numbered copy start, the recording paper sent to the fixing device 34 passes through the fixing device 34, and then is transferred to the reversing conveyance path 59 by the conveyance direction control roller 35. It is not sent to the buffer tray 36, but is sent straight to the conveyance path to the buffer tray 36 and sent to the buffer tray 36. In the copy operation in response to the even-numbered copy start, the recording paper in the buffer tray 36'' is sent to the transfer unit, and after the transfer is completed, the recording paper is sent to the fixing device 34. After passing through the fixing device 34, the recording paper is As before, the paper is sent out to the paper ejection tray 58 through the ejection port.

FIG. 2 shows the configuration of an electrical control system that controls the operation of each part of the mechanism. The main body of the electrical control system is a microcomputer unit h61, and a remote control board 62. Abnormality display unit 63. Various sensors 64. and various electrical circuits for energizing the electrical elements of the copying mechanism element.

Microcomputer Unino 1-61 includes a microprocessor CPU, ROM with input/output port I10, RAM with input/output port hI10, gate element, and amplifier.

It consists of interface elements such as inverters.

When the power switch of the copying machine is turned on, the indicator light with the following display lights up.

A, power switch on, please wait, c, number of sheets per set..., number of copies per sheet...indication of waiting time until copying is possible, # degree...9 sheets to standard. Chair: Size set for paper source, Paper source: Indication of paper source setting (top or bottom) , copy mode...The main key switches provided on the single-sided recording operation board 62 are as follows.

■3 Power saving key switch: Press this switch to enter power saving mode. Press it again to return to normal. In power saving mode, the following states occur.

a0 power saving lamp lights up The following information will be deleted.

Other than C6 power saving key (main disabled d, drum and fixing heater controlled to lower temperature than during copying e, copy settings as standard (1 size, upper cassette feed).

Set to medium density 2 single-sided recording, Cera I, number of sheets 1) When the power saving mode is canceled, the copy setting becomes standard. The power saving key - is disabled during copying (until the recording paper is ejected or until it finishes entering buffers 1 to ray).

2. Printed key switch; The copy operation is started by pressing this key.

Can be entered only when copy operation is enabled.

3. Interrupt key switch: If you press this key during copying, copying will stop at that cycle if it is before paper feeding, or after the copying is finished (after ejecting the recording paper). , or after entering Buffer 1 to Ray), the mote and display at that time are memorized, the mode is set to the standard state, the number of cents is set to 1, and the number of copies per copy is set to 0 (light off). When entering interrupt mode, the interrupt display lights up. Pressing the key is valid multiple times during the period and during copying, and the mode at the time the copying is completed is adopted.

4.10 key (numeric keypad) switch: The 10 key is a key for setting the desired number of copies, and it is possible to set a 2-digit number using this key. ]0
During copying, when the number of copies set is not 1, the first 0 key and the third digit key are disabled. Further, the numbered keys are displayed in the set number and the contents of the keys are stored in the memory.

5. Double-sided copy key: The first press of this key switches to double-sided copy mode.
A double-sided copy is displayed. Press it again to return to single-sided copy mode.

6. Double copy key: The first press of this key enters the double copy mode, and the double copy is displayed. Pressing it again returns to single-sided copying.

The ROM of the microcomputer unit 61 contains a program (2) for copying status setting, display, single-sided mode copying, duplex mode copying, dual recording mode copying, and other scheduled controls for the copying machine group to which this model belongs. Main routines and subroutines) are stored.

Next, an overview of the subroutine management table related to the present invention and its execution selection will be explained.

Figure 3a shows an overview of the contents of the subroutine management table stored in the ROM of the microcomputer (microprocessor) 22TS 1-61, and Figure 3b shows the status assigned to one area of the RAM. An overview of the contents of the registers is shown, and FIG. 3c shows an overview of the execution operations of the processor 61.

The main routine, subroutine group, and subroutine management table (Figure 3a) are stored in the ROM of the microprocessor 221-61, and the status register (Figure 3b) is allocated to the RAM. Data indicating the current state of progress of the copy sequence is stored in memory.

Describing the outline of the operation of the microprocessor unit 61 with reference to FIG. 3c, the main routine first records the execution status of the subroutine indicated by 10 in the subroutine management table (FIG. 3a) and the status register (FIG. 3b). , and determines whether the current status is in a state to execute subroutine A. If the status data in the management table indicates that the subroutine can be executed, and the contents of the status register indicate that the subroutine is If the status data indicating that the program is enabled is stored, and the result is N, the process proceeds to that subroutine. That is, the start address of the subroutine A is read from 11 in the management table and execution of the block diagram is advanced to that address.

If the read data of the management table indicates that subroutine A is not being executed, or if the contents of the status register do not allow subroutine A to be executed, the process skips to the determination of whether subroutine B can be executed. Repeat the same operation below.

For example, subroutine A is a numeric keypad function,
It can be executed in minor abnormality mode, and subroutine B
is a manual function, and can be executed in copy start and copy mode. Subroutine C is a function of Jamlimono 1 to input, and can be executed in the minor abnormality single abnormality mode. Subroutine D is a display output function and can be executed in any mode other than test mode. Assuming that, 1.0, 12, 14 . The execution status of each subroutine indicated by l-6 is 00100010.000.
01100.01100000°01111111. Further, addresses indicated by 11, 13, 15, and 1.7 are the start addresses of the subroutines of the above functions, respectively.

Now, assuming that the copying machine is in the time mode, the content of the status register is 00000010, and the determination of whether execution is possible or not is made based on the result of the logical product of the status register and the execution status. That is, the content of the status register is 00000010 and the data of 10 in the management table is 00.
The logical product of 10001.0 is 000000], which is 0, which is the same as the contents of the status register, and since it is not zero, subroutine A is executed. In the case of subroutine B (the contents of the management table are 00001100), if the contents of the status register are 00000010, their logical sum becomes oooooooooo, which is zero and does not match the contents of the status register, so subroutine B is not executed. ■The execution status of subroutine C in 7I is 0.
Since it is 1.100000, the logical product with 00000010 is zero, so subroutine C is not executed.

16, the execution status of subroutine D is 0111]
, 111, and the AND with 0000001.0 is 0
The value is 0000010, which is not zero, and matches the contents of the status register, so execute it.

According to this logic, the execution status of subroutines that are not scheduled to be executed is set to ooooooooo for each machine.

FIG. 4a shows an outline of the main routine of the processor 61. In this case, each block is a subroutine, but in reality, each block shown in FIG. 4a is further divided into subroutines, and each subroutine is constituted by a subroutine. In addition,
It monitors the output of sensors, etc. at the required points in each block such as timing, test, copy start, copy, copy end, etc., detects an abnormality, and sets a flag indicating the details of the abnormal condition. Proceed to the block for minor or major abnormalities.

FIG. 4b shows an outline of the contents of the minor abnormality subroutine.

When proceeding to this step, the processor 61 reads the execution status of the "minor abnormality" subroutine in the subroutine management table, refers to the current state of each copy element (this indicates whether each subroutine can be executed), and compares the two. ), and the comparison result is zero (logical sum = ooooooo
oo), jump to the next step (serious abnormality). If the comparison result is not zero, a minor abnormality subroutine is executed.

Such a step for determining whether or not to execute a subroutine is placed at the beginning of each subroutine. Therefore, for example, in a machine that does not distinguish between minor and major abnormalities and always handles abnormalities in the same way as major abnormalities, the execution status data of the minor abnormality subroutine is
ooooooooooJ, and the execution status data of the serious abnormality subroutine is set to a value whose logical product with the contents of the status register does not become zero at the timing when abnormality processing is possible. In a machine that processes minor abnormalities and major abnormalities separately, in the management table, subroutine status data for minor abnormalities and major abnormalities are logically correlated with the contents of the status register (status data) when each can be executed. Set to a value that does not result in a sum of zero.

Although only a specific subroutine has been described above, all other subroutines selected for each model are set in the same way. Therefore, for example, in a model that does not perform double-sided copying, subroutines related to double-sided copying are set to ``roooooooooJ'' in the management table. The same applies to cassette selection 2 automatic document feeding, ejection to the sorter, enlargement, reduction, etc.

■Effects As explained above, by fixing the main routine and subroutine and changing the subroutine management table for each model, multiple types of copiers with different operation modes and/or functions can be operated at high cost. It is reliable and can be designed in a short period of time. Processor configuration effort is reduced.

[Brief explanation of drawings]

FIG. 1 is a side view mainly showing the structure of the mechanical system of an embodiment of the present invention, and FIG. 2 is a block diagram mainly showing the coupling relationship of the electrical system components. Figure 3a is a plan view showing the outline of the contents of the blue routine management table used in the present invention;
This figure is a plan view showing an overview of the contents of the status register, and FIG. 3c is a block diagram showing the correlation between the main routine executed by the microprocessor, subroutines, management tables, status registers, etc. FIG. 4a is a flowchart showing an outline of the main routine, and FIG. 4b is a flowchart showing an outline of the minor abnormality subroutine. A: Copying machine body B: Original transport device 6: Carriage 14: Lens 15: Contact glass plate 16 to 19: Mirror 2o: g Light body 1 - Ram
21: Halogen lamp 26: Developing device 28:
Main charger 29: Erase lamp 30: Separation charger 32 cleaning device 33: Static elimination lamp 34: Fixing device 36: Buffer tray 3
7.38: To Case No. 1 43 Ni register roller 50
: 1itll 58 : Paper discharge 1 helay 59 : Reversing conveyance path

Claims (3)

[Claims] (1) In a copying machine equipped with a microprocessor, in which the microprocessor controls the operations of the operation board, reading, copying, and each element; subroutine management that indicates whether or not each subroutine can be executed in the microprocessor or the memory connected to it; 1. A copying apparatus comprising a table, wherein a microprocessor reads executable data assigned to a subroutine to be executed in a main routine, and when the data is not executed, jumps over the subroutine. (2) The microprocessor refers to the contents of a status register that stores data indicating each state of the copying machine and the data read from the subroutine management table, and when both agree that the subroutine is executable, executes the subroutine. Copying apparatus described in the range (]). (3) The subroutine management table is composed of status data indicating whether each subroutine can be executed and the start address of the subroutine, and when the microprocessor determines that the subroutine can be executed, the microprocessor advances to the start address of the subroutine. Paragraph (1) or (
2) The copying device described in item 2).