JPS5590973A - Exposure device of electrophotographic copier - Google Patents

Exposure device of electrophotographic copier

Info

Publication number
JPS5590973A
JPS5590973A JP16525978A JP16525978A JPS5590973A JP S5590973 A JPS5590973 A JP S5590973A JP 16525978 A JP16525978 A JP 16525978A JP 16525978 A JP16525978 A JP 16525978A JP S5590973 A JPS5590973 A JP S5590973A
Authority
JP
Japan
Prior art keywords
scanning
mirrors
static
distance
exposure
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
JP16525978A
Other languages
Japanese (ja)
Inventor
Toyokazu Satomi
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.)
Ricoh Co Ltd
Original Assignee
Ricoh 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 Ricoh Co Ltd filed Critical Ricoh Co Ltd
Priority to JP16525978A priority Critical patent/JPS5590973A/en
Publication of JPS5590973A publication Critical patent/JPS5590973A/en
Pending legal-status Critical Current

Links

Landscapes

  • Light Sources And Details Of Projection-Printing Devices (AREA)

Abstract

PURPOSE: To reduce the moving distance of the scanning mirrors and improve the copying speed by slit-illuminating the static orignal surface by the light from static light sources by moving the scanning plane mirrors.
CONSTITUTION: Scanning distance of scanning plane mirrors 11 are shorter than the scanning distance in original surface 2 and the light from static light sources 8 are slit-illuminated to the original surface by way of static mirrors 10. After the end of the exposure, the lens 3 again returns to the exposure start position, during which time the scanning plane mirrors 11 are also returned to the respective scanning start positions to be ready for the next exposure operation. Since the distance from the light sources 8 to the orignal surface is constant, guadratic surface of revolution may be used for reflectors 9 and the lighting efficiency enhanced. In addition, by reducing the scanning time of the scanning mirrors, the miniaturized exposure device of the electrophotographic copier of superior high speed coying characteristic may be obtained.
COPYRIGHT: (C)1980,JPO&Japio
JP16525978A 1978-12-29 1978-12-29 Exposure device of electrophotographic copier Pending JPS5590973A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP16525978A JPS5590973A (en) 1978-12-29 1978-12-29 Exposure device of electrophotographic copier

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP16525978A JPS5590973A (en) 1978-12-29 1978-12-29 Exposure device of electrophotographic copier

Publications (1)

Publication Number Publication Date
JPS5590973A true JPS5590973A (en) 1980-07-10

Family

ID=15808915

Family Applications (1)

Application Number Title Priority Date Filing Date
JP16525978A Pending JPS5590973A (en) 1978-12-29 1978-12-29 Exposure device of electrophotographic copier

Country Status (1)

Country Link
JP (1) JPS5590973A (en)

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