JPS57142663A - Copying device - Google Patents

Copying device

Info

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
Application number
JP2775181A
Other languages
Japanese (ja)
Inventor
Ryoichi Otsuka
Masayoshi Hayashi
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Canon Inc
Canon Finetech Nisca Inc
Original Assignee
Canon Inc
Copyer Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Canon Inc, Copyer Co Ltd filed Critical Canon Inc
Priority to JP2775181A priority Critical patent/JPS57142663A/en
Publication of JPS57142663A publication Critical patent/JPS57142663A/en
Pending legal-status Critical Current

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.
JP2775181A 1981-02-27 1981-02-27 Copying device Pending JPS57142663A (en)

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)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS626279A (en) * 1985-07-02 1987-01-13 Konishiroku Photo Ind Co Ltd Exposure device

Cited By (1)

* Cited by examiner, † Cited by third party
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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