JPS57142663A - Copying device - Google Patents
Copying deviceInfo
- Publication number
- JPS57142663A JPS57142663A JP2775181A JP2775181A JPS57142663A JP S57142663 A JPS57142663 A JP S57142663A JP 2775181 A JP2775181 A JP 2775181A JP 2775181 A JP2775181 A JP 2775181A JP S57142663 A JPS57142663 A JP S57142663A
- Authority
- JP
- Japan
- Prior art keywords
- index
- original
- decided
- pulses
- positions
- 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
- G03B—APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
- G03B27/00—Photographic printing apparatus
- G03B27/32—Projection printing apparatus, e.g. enlarger, copying camera
- G03B27/52—Details
- G03B27/522—Projection optics
- G03B27/525—Projection optics for slit exposure
- G03B27/528—Projection optics for slit exposure in which the projection optics remain stationary
Landscapes
- Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- General Physics & Mathematics (AREA)
- Exposure Or Original Feeding In Electrophotography (AREA)
- Optical Systems Of Projection Type Copiers (AREA)
Abstract
PURPOSE:To make the detection of many positions possible with one of the switches on a reciprocation path by providing pattern indexes to a moving member such as original planten, deciding and processing these in combination with reference pulses and detecting the positions. CONSTITUTION:At the time when an original platen 1 moves from retreating to advancing, whether the current moving position of an original is at the 2 of indexes or in the position moved several mm. from the 2 is decided from the signal which a photoelectric sensor 3 detecting the index 2 detects the index positions of 2, 3 and the rotating quantity which corresponds to the number of pulses from a pulse source 7 and is substituted with an image speed. For example, when the position of the index 5 is assumed to be the position for controlling resist by operating a regist roller 9, the number of pulses (for example, 20) from a reference pulse source 7 outputted while the original platen moves from the index 4 to 5 is beforehand stored in an ROM, and the position of the index 5 is decided with a counter 20, by the decided output whereof the roller 9 is operated.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2775181A JPS57142663A (en) | 1981-02-27 | 1981-02-27 | Copying device |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2775181A JPS57142663A (en) | 1981-02-27 | 1981-02-27 | Copying device |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS57142663A true JPS57142663A (en) | 1982-09-03 |
Family
ID=12229721
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP2775181A Pending JPS57142663A (en) | 1981-02-27 | 1981-02-27 | Copying device |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS57142663A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS626279A (en) * | 1985-07-02 | 1987-01-13 | Konishiroku Photo Ind Co Ltd | Exposure device |
-
1981
- 1981-02-27 JP JP2775181A patent/JPS57142663A/en active Pending
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS626279A (en) * | 1985-07-02 | 1987-01-13 | Konishiroku Photo Ind Co Ltd | Exposure device |
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