JPS5545081A - Exposure scanning device - Google Patents

Exposure scanning device

Info

Publication number
JPS5545081A
JPS5545081A JP11949178A JP11949178A JPS5545081A JP S5545081 A JPS5545081 A JP S5545081A JP 11949178 A JP11949178 A JP 11949178A JP 11949178 A JP11949178 A JP 11949178A JP S5545081 A JPS5545081 A JP S5545081A
Authority
JP
Japan
Prior art keywords
clutch
exposure scanning
driven
driving
drive pulley
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
JP11949178A
Other languages
Japanese (ja)
Inventor
Yoshimasa Kimura
Yoshikuni Toyama
Masahito Ishida
Koichi Miyamoto
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 JP11949178A priority Critical patent/JPS5545081A/en
Publication of JPS5545081A publication Critical patent/JPS5545081A/en
Pending legal-status Critical Current

Links

Landscapes

  • Optical Systems Of Projection Type Copiers (AREA)

Abstract

PURPOSE: To enable vibrations and noise of the device to be prevented without impairing scanning speed by providing the means of controlling the driving force of a reciprocating means for exposure scanning so that the reciprocating means is driven at a low acceleration speed at the starting of backward movement after exposure scanning.
CONSTITUTION: As current is supplied to an electromagnetic clutch 12, a drive pulley 5 is driven to start exposure scanning. At this same instant, a braking gear 13 is driven. On the other hand, a brake drum 15 is revolved by way of a rotary clutch 14 to act braking power upon the drive pulley 5. Hence, the electromagnetic clutch 12 assumes a half-clutch state, as a result of which the driving power of the initial stage of driving becomes smaller than that in a steady driving state, thus it is accelerated at a lower acceleration rate snd the vibrations are small and are rapidly converged in a short approach section. In the backward movement, the one- way rotating clutch 14 disengages and therefore the brake drum 15 does not rotate.
COPYRIGHT: (C)1980,JPO&Japio
JP11949178A 1978-09-28 1978-09-28 Exposure scanning device Pending JPS5545081A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP11949178A JPS5545081A (en) 1978-09-28 1978-09-28 Exposure scanning device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP11949178A JPS5545081A (en) 1978-09-28 1978-09-28 Exposure scanning device

Related Child Applications (1)

Application Number Title Priority Date Filing Date
JP15039584A Division JPS60121437A (en) 1984-07-18 1984-07-18 Exposure scanner

Publications (1)

Publication Number Publication Date
JPS5545081A true JPS5545081A (en) 1980-03-29

Family

ID=14762573

Family Applications (1)

Application Number Title Priority Date Filing Date
JP11949178A Pending JPS5545081A (en) 1978-09-28 1978-09-28 Exposure scanning device

Country Status (1)

Country Link
JP (1) JPS5545081A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS57164758U (en) * 1981-04-14 1982-10-18
JPS57164757U (en) * 1981-04-14 1982-10-18
JPS57171359A (en) * 1981-04-06 1982-10-21 Ibm Mutual connector

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS57171359A (en) * 1981-04-06 1982-10-21 Ibm Mutual connector
JPH0321904B2 (en) * 1981-04-06 1991-03-25 Intaanashonaru Bijinesu Mashiinzu Corp
JPS57164758U (en) * 1981-04-14 1982-10-18
JPS57164757U (en) * 1981-04-14 1982-10-18

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