JPH0558006A - Recording device - Google Patents

Abstract

PURPOSE:To improve the workability and economy by executing various types of timing changes for a recording device easily without part replacing work such as a replacement of a ROM on a control board, etc. CONSTITUTION:A recording device, which records image information on a recording paper by a specified imaging process by carrying a recording paper, is equipped with an EEPR0M2l5 which stores respective data regarding a recording paper carrying timing and (or) image plotting process timing, an operation display unit 201 (input switch 203) which indicates the change of data in the EEPROM215, and a CPU212 which re-writes the data in the EEPROM215 based in the indication from the operation display unit 201, and a jumper cable JP1 is connected to the CPU212 in order to prevent an erroneous input from happening.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a recording apparatus such as a laser printer, a copying machine, a facsimile, etc. Regarding

[0002]

2. Description of the Related Art A "recording device" disclosed in Japanese Utility Model Laid-Open No. 1-153236 discloses a recording device which conveys recording paper and records image information on the recording paper according to a predetermined process. In addition to the main body control means for accommodating the basic data table of timings of various processes, a dedicated storage element storing an alternative data table different from the basic data table of the timings is connected to the main body control means, Sometimes the timing content is changed.

[0003]

However, in the case of the "recording apparatus" as shown above, when the product is shipped to the market and it is unavoidably necessary to change the transportation timing, the market is required. Since a part of the recording device has to be opened to perform work such as ROM replacement on the control board or control board replacement, the work becomes complicated and the cost of the device increases.

The present invention has been made in view of the above, and various kinds of timing changes in the recording apparatus can be easily performed without replacement work of parts such as ROM on the control board or control board, and workability is improved. And to improve economic efficiency.

[0005]

In order to achieve the above object, the present invention provides a recording apparatus for conveying recording paper and recording image information on the recording paper by a predetermined image forming process. And / or data storage means for storing each data relating to the image forming process timing, operation means for instructing a change of data in the data storage means, and data in the data storage means based on an instruction from the operation means. The present invention provides a recording device having a control unit for rewriting.

Further, it is desirable to dispose erroneous input prevention means in the control means.

The erroneous input prevention means is composed of a connecting member for switching the input port of the control means to the L level, and is provided in the data storing means only when the input port is switched to the L level by the connecting member. It is desirable that the data can be rewritten.

[0008]

The recording apparatus according to the present invention stores each data of the transport timing and / or the image forming process timing,
The contents of each data stored by the operating means are rewritten as appropriate.

Further, in the above, erroneous input prevention means prevents data rewriting mistakes. For example, the erroneous input prevention means enables rewriting of data only when the input port of the control means is switched to the L level.

[0010]

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 recording apparatus according to the present invention. In the figure, 101 is a scanner motor that rotates a deflection mirror 102, 102 is a deflection mirror that scans a laser beam, 103 is a first mirror that reflects the laser beam, and 104 is the laser beam on the surface of the photosensitive drum 106 at an equal linear pitch. An fθ lens that performs conversion correction so as to scan, a second mirror 105 that guides the laser beam that has passed through the fθ lens 104 to the photosensitive drum 106, and 10
Reference numeral 6 is a photosensitive drum that forms an electrostatic latent image by an electrophotographic process, and 107 is a registration roller that conveys the recording paper while keeping timing with the image on the photosensitive drum 106.

Further, 108 is a charging charger for uniformly corona-discharging the surface of the photosensitive drum 106, 109 is a developing unit for accommodating toner and performing a developing process by a developing process, and 110 is a transferring process for performing a transferring process by corona-discharging. A charger 111 is a cleaning unit for cleaning the residual toner on the surface of the photosensitive drum 106 with a cleaning blade, and a heater 112 is incorporated inside, and the surface is made of a heat-resistant and releasable material and is controlled to a predetermined temperature. A fixing roller that rotates in a state, a pressing roller that rotates in a state of being pressed by a predetermined pressure so as to face the fixing roller 112, a sheet feeding cassette that sets a plurality of recording sheets, a sheet feeding 115 A paper feed roller for feeding the recording paper in the cassette 114, and a paper feed roller 115 facing the paper feed roller 115 A friction pad to be away.

The operation of the recording apparatus configured as described above will be described. The laser beam modulated according to the write image data is deflected by the deflection mirror 102 that is rotating at a constant speed at a high speed, and is irradiated onto the photosensitive drum 106. On the other hand, prior to this, since the surface of the photosensitive drum 106 is uniformly charged by the charging charger 108, an electrostatic latent image according to the image data is formed on the photosensitive drum 106 due to the potential distribution. The formed electrostatic latent image is visualized by the toner of the developing unit 109.

On the other hand, the recording paper fed by the paper feed roller 116 is conveyed to the registration roller 107. At this time, the registration roller 107 aligns the toner image on the photosensitive drum 106 and conveys the recording paper to the transfer portion. This recording paper is transferred by the corona discharge of the transfer charger 110. The recording paper on which the toner image is transferred is
The toner is sent to the nip between the fixing roller 112 and the pressure roller 113, which are controlled at a predetermined temperature, where the fixing process is performed and the sheet is discharged to the outside of the machine. In addition, the photosensitive drum 106 after the transfer processing
The cleaning unit 111 removes the residual toner and waits until the next image processing command is issued.

FIG. 2 is a block diagram showing a control system of the recording apparatus according to the present invention. In the figure, 201 is an operation display section for operating and displaying the recording apparatus, and 202 is an engine control section for controlling the entire recording apparatus. In the operation display unit 201, 203 is an input switch for instructing a change instruction of conveyance and process timing, 204 is an LCD (liquid crystal display) for displaying an initial setting state, and 205 is an operation display unit 2 based on a program stored in the ROM 207.
01 CPU (microcomputer) for controlling the whole,
206 is an LCD driver for driving and controlling the LCD 204,
Reference numeral 207 is a ROM that stores programs for executing various control processes, and 208 is a RAM that stores results and data processed by the CPU 205.

Further, in the engine control unit 202, 2
Reference numeral 09 denotes a motor which is a drive source of a drive system (not shown) of the recording apparatus, and 210 is ON / OFF based on a predetermined timing signal.
A feed clutch that rotates the paper feed roller 210 when turned off, and a registration roller 107 that turns on / off a 211 based on a predetermined timing signal.
A transfer clutch for rotating the subsequent rollers, 212
Is a CP that controls the entire engine control unit 202 based on the programs stored in the ROM 213 and the EEPROM 215.
U (microcomputer), 213 is a motor 209,
Feed clutch 210, transfer clutch 21
1, ROM for storing programs for executing various control processes for the charging charger 108, the transfer charger 110, etc., 214 is a RAM for storing results and data processed by the CPU 212, 215 is a motor 209, feed clutch 210. , Transfer clutch 211, charging charger 108, transfer charger 11
It is an electrically rewritable EEPROM that stores each program data of ON / OFF timing at 0 and the like.

3A and 3B show an example of changing the transport timing and the process timing. FIG. 3A shows a change operation procedure by the input switch 203 in the operation display unit 201, and FIG. 3B shows the LCD 20 in the operation display unit 201.
4 shows a display example.

An example of the operation will be described below with reference to FIGS. 2 and 3. CP in engine control unit 202
U212 controls each of the motor 209, the feed clutch 210, the transfer clutch 211, the charging charger 108, the transfer charger 110, etc. based on the program stored in the ROM 213. For example, after the printing apparatus is shipped as a product, data of a portion where a change in the transport timing and the process timing of the print sheet is expected to be stored in the EEPROM 215. The stored data is, for example, 1.0S, 1.4S, 1.5S, 2.0S, corresponding to t1 to t7 as shown in FIG.
It is set to 5.0S, 5.5S, and 7.0S.

The contents of the EEPROM 215 are changed according to the operation procedure shown in FIG. First, SW-A of the input switch 203 of the operation display unit 201
To ON ('L'). As a result, the operation display unit 201
The CPU 205 of the engine requests the CPU 212 of the engine control unit 202 for data of t1 to t7,
LCD driver 206 displays the contents of t1 to t7 on the LCD
It is displayed at 204. Next, the switch SW-B of the input switch 203 of the operation display unit 201 is turned ON ('L') for one time t1.
Change mode. Further, the SW- of the input switch 203
By setting C to ON ('L') for one shot, the initial value 1.
0S was changed to 1.1S, and 2 shots turned ON ('L').
It is changed to 2S. In addition, SW− of the input switch 203
When A is turned off ('H'), CPU 205 sends CP
The data of t1 to t7 is sent to U212, and the CPU
212 writes the data in the EEPROM 215 and ends the series of processes. In this way, the feed clutch ON time t1 is changed from 1.0S to 1.2S.

In the above description, the input switch 203 and the LCD 204 of the operation display unit 201 are controlled by the CPU 205, and each control of the entire recording apparatus is controlled by the CPU 212 of the engine control unit 202. Further, in the above description, in order to prevent a malfunction due to an operator's operation error, the CPU 21 in the engine controller 202
The second port P0 can be protected so that the EEPROM 215 cannot be rewritten unless the port P0 is set to ('L') by a jumper wire JP1 or the like.

FIG. 4 is a timing chart showing the above-mentioned conveyance timing and process timing. The feed clutch 210, the transfer clutch 211,
ON / OFF of charging charger 108 and transfer charger 110
OFF timing relationships t1 to t7 are shown.

FIG. 5 is a flow chart showing the procedure of the timing change processing operation. First, the timing is changed at the initial setting (S501), and the EEPROM 21
Data is input from 5 (S502). Next, EEPR
The data of the OM 215 is stored in the RAM 214 (S50
3), confirm the end of the input of the EEPROM 215 (S5
04), if the input is completed, the process is ended as it is, and if the input is not completed, the process returns to step S502 to repeat the same processing.

[0022]

As described above, according to the recording apparatus of the present invention, by inputting an instruction from the operation unit of the recording apparatus,
Since the transfer timing and / or the process timing can be changed, each timing can be easily changed without changing the ROM or the control board even after the product is finished. Can be improved.

[Brief description of drawings]

FIG. 1 is an explanatory diagram showing a schematic configuration of a recording apparatus according to the present invention.

FIG. 2 is a block diagram showing a control system of the recording apparatus according to the present invention.

FIG. 3 is an explanatory diagram showing a modification example of the transport timing and the process timing according to the present invention.

FIG. 4 is a timing chart showing conveyance timing and process timing according to the present invention.

FIG. 5 is a flowchart showing a procedure of a timing change processing operation according to the present invention.

[Explanation of symbols]

201 Operation Display Unit 202 Engine Control Unit 203 Input Switch 204 LCD
(Liquid crystal display) 205 CPU 212 CPU 215 EEPROM PO port JP1 jumper wire

Claims (3)

[Claims] 1. A recording apparatus which conveys recording paper and records image information on the recording paper by a predetermined image forming process,
Data storage means for storing each data relating to recording paper conveyance timing and / or image forming process timing;
A recording apparatus comprising: an operating unit that gives an instruction to change data in the data storing unit; and a control unit that rewrites data in the data storing unit based on an instruction from the operating unit. 2. The recording apparatus according to claim 1, wherein the control unit is provided with an erroneous input prevention unit. 3. The erroneous input prevention means is composed of a connection member for switching the input port of the control means to the L level, and is provided in the data storage means only when the input port is switched to the L level by the connection member. The recording apparatus according to claim 2, wherein the data is rewritable.