JPS5459940A - Variable power copying apparatus - Google Patents

Variable power copying apparatus

Info

Publication number
JPS5459940A
JPS5459940A JP1433578A JP1433578A JPS5459940A JP S5459940 A JPS5459940 A JP S5459940A JP 1433578 A JP1433578 A JP 1433578A JP 1433578 A JP1433578 A JP 1433578A JP S5459940 A JPS5459940 A JP S5459940A
Authority
JP
Japan
Prior art keywords
photo detectors
signals
controlled
moving distance
variable power
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
JP1433578A
Other languages
Japanese (ja)
Inventor
Yoshiaki Sone
Takamasa Sawada
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
Original Assignee
Canon Inc
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 filed Critical Canon Inc
Priority to JP1433578A priority Critical patent/JPS5459940A/en
Publication of JPS5459940A publication Critical patent/JPS5459940A/en
Pending legal-status Critical Current

Links

Landscapes

  • Variable Magnification In Projection-Type Copying Machines (AREA)

Abstract

PURPOSE: To eliminate wasteful movement and improve copying efficiency by changing the moving distance of image scanning system according to the selected magnification.
CONSTITUTION: Forward and backward clutches 33, 34 which transmit the revolutions of a motor 30 to a photosensitive drum 25 and film carrier base 12 are controlled by a detector 69 which consists of a lever 72 turned about a pin 71 by the movement of the film carrier base 12, photo detectors 72a thru 72e, etc. and controls the moving distance of the film and adjusts the exposure start position. Then, if the selected magnification is low, the forward and backward clutches 33, 34 are controlled by the signals from the photo detectors 72a, 72e, the exposure start position is determined by the signal from the photo detector 72a and the moving distance is determined by the signals from the photo detectors 72a, 72e. If it is high, these are controlled by the signals from the photo detectors 72b, 72d
COPYRIGHT: (C)1979,JPO&Japio
JP1433578A 1978-02-09 1978-02-09 Variable power copying apparatus Pending JPS5459940A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP1433578A JPS5459940A (en) 1978-02-09 1978-02-09 Variable power copying apparatus

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP1433578A JPS5459940A (en) 1978-02-09 1978-02-09 Variable power copying apparatus

Related Parent Applications (1)

Application Number Title Priority Date Filing Date
JP2349174A Division JPS5437825B2 (en) 1974-02-27 1974-02-27

Publications (1)

Publication Number Publication Date
JPS5459940A true JPS5459940A (en) 1979-05-15

Family

ID=11858188

Family Applications (1)

Application Number Title Priority Date Filing Date
JP1433578A Pending JPS5459940A (en) 1978-02-09 1978-02-09 Variable power copying apparatus

Country Status (1)

Country Link
JP (1) JPS5459940A (en)

Similar Documents

Publication Publication Date Title
JPS5440629A (en) Formation of hard photographic image
JPS5332016A (en) Camera with built-in movable falsh device
JPS5562423A (en) Projecting device
JPS52123235A (en) Power source change-over system for electric shutter camera
JPS5280840A (en) Electrophotographic copying machine
JPS52110640A (en) Static latent image transferring electrophotographic copier
JPS5459940A (en) Variable power copying apparatus
JPS5286717A (en) Narrow band pick up unit
JPS52140333A (en) Optical device
JPS5242136A (en) Optical process for detecting seams
JPS53133388A (en) X-ray diagnosis equipment
JPS5782865A (en) Electrophotographic copier
JPS53131031A (en) Operation cnontroller for copying apparatus
JPS5414691A (en) Liminous semiconductor device
JPS5538583A (en) Exposure control mechanism in cine camera
JPS5487219A (en) Camera
JPS5395519A (en) Facsimile transmitter
JPS53149035A (en) Zerography
JPS5379430A (en) Color solid state pickup device
JPS5227635A (en) Exposure control change-over device for finder convertible camera
JPS52153532A (en) Control sensor for movable agricultural implement
JPS5397818A (en) Measuring system for projecting magnification
JPS5333533A (en) Detection device for operation stage
JPS53100846A (en) Automatic focusing device
JPS53137390A (en) Automatic photography and transmitting system for trafic control