JPS56123567A - Magnification controller for optical system scanning mechanism - Google Patents
Magnification controller for optical system scanning mechanismInfo
- Publication number
- JPS56123567A JPS56123567A JP2609980A JP2609980A JPS56123567A JP S56123567 A JPS56123567 A JP S56123567A JP 2609980 A JP2609980 A JP 2609980A JP 2609980 A JP2609980 A JP 2609980A JP S56123567 A JPS56123567 A JP S56123567A
- Authority
- JP
- Japan
- Prior art keywords
- optical system
- scanning mechanism
- generating means
- system scanning
- drive section
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Classifications
-
- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03G—ELECTROGRAPHY; ELECTROPHOTOGRAPHY; MAGNETOGRAPHY
- G03G15/00—Apparatus for electrographic processes using a charge pattern
- G03G15/04—Apparatus for electrographic processes using a charge pattern for exposing, i.e. imagewise exposure by optically projecting the original image on a photoconductive recording material
- G03G15/041—Apparatus for electrographic processes using a charge pattern for exposing, i.e. imagewise exposure by optically projecting the original image on a photoconductive recording material with variable magnification
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Exposure Or Original Feeding In Electrophotography (AREA)
- Variable Magnification In Projection-Type Copying Machines (AREA)
Abstract
PURPOSE:To reduce a mechanical moving part and to enable to speed up an optical system scanning mechanism, by providing the 1st pulse generating means producing a pulse signal relating to the 1st drive section which is standardized. CONSTITUTION:The 1st drive section 20 is directly or indirectly fitted with the 1st pulse generating means 22 consisting of encoders, and pulse signals are sequentially generated in relation with the operation of the 1st drive section 20. The signal output from the 1st pulse generating means 22 (frequency in fb) is wave-shaped at the amplifier (including wave shape circuit) 23 and then input to the 1st phase loked loop PLL-1. Thus, for example, the method controlling the revolution of a motor and stopping it at the home position are used. Thus, since only few mechanical moving parts are required for this magnification controller, the high speed optical system scanning mechanism is realized.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2609980A JPS56123567A (en) | 1980-03-04 | 1980-03-04 | Magnification controller for optical system scanning mechanism |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2609980A JPS56123567A (en) | 1980-03-04 | 1980-03-04 | Magnification controller for optical system scanning mechanism |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS56123567A true JPS56123567A (en) | 1981-09-28 |
Family
ID=12184141
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP2609980A Pending JPS56123567A (en) | 1980-03-04 | 1980-03-04 | Magnification controller for optical system scanning mechanism |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS56123567A (en) |
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS57173858A (en) * | 1981-04-20 | 1982-10-26 | Fuji Xerox Co Ltd | Scale factor adjusting device of copier |
JPS58184940A (en) * | 1982-04-23 | 1983-10-28 | Fuji Xerox Co Ltd | Original platen driving controller |
JPS592026A (en) * | 1982-06-28 | 1984-01-07 | Canon Inc | Variable power image forming device |
JPS5919936A (en) * | 1982-07-26 | 1984-02-01 | Fuji Xerox Co Ltd | Optical system controller for copying machine |
JPS61124931A (en) * | 1984-11-21 | 1986-06-12 | Canon Inc | Variable power image forming device |
-
1980
- 1980-03-04 JP JP2609980A patent/JPS56123567A/en active Pending
Cited By (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS57173858A (en) * | 1981-04-20 | 1982-10-26 | Fuji Xerox Co Ltd | Scale factor adjusting device of copier |
JPH0119570B2 (en) * | 1981-04-20 | 1989-04-12 | Fuji Xerox Co Ltd | |
JPS58184940A (en) * | 1982-04-23 | 1983-10-28 | Fuji Xerox Co Ltd | Original platen driving controller |
JPS592026A (en) * | 1982-06-28 | 1984-01-07 | Canon Inc | Variable power image forming device |
JPH0548459B2 (en) * | 1982-06-28 | 1993-07-21 | Canon Kk | |
JPS5919936A (en) * | 1982-07-26 | 1984-02-01 | Fuji Xerox Co Ltd | Optical system controller for copying machine |
JPH0377507B2 (en) * | 1982-07-26 | 1991-12-10 | Fuji Xerox Co Ltd | |
JPS61124931A (en) * | 1984-11-21 | 1986-06-12 | Canon Inc | Variable power image forming device |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
R250 | Receipt of annual fees |
Free format text: JAPANESE INTERMEDIATE CODE: R250 |
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R250 | Receipt of annual fees |
Free format text: JAPANESE INTERMEDIATE CODE: R250 |
|
R250 | Receipt of annual fees |
Free format text: JAPANESE INTERMEDIATE CODE: R250 |
|
FPAY | Renewal fee payment (prs date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20090315 Year of fee payment: 7 |
|
FPAY | Renewal fee payment (prs date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20100315 Year of fee payment: 8 |
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LAPS | Cancellation because of no payment of annual fees |