JPS5590974A - Exposure device of electrophotographic copier - Google Patents

Exposure device of electrophotographic copier

Info

Publication number
JPS5590974A
JPS5590974A JP16526478A JP16526478A JPS5590974A JP S5590974 A JPS5590974 A JP S5590974A JP 16526478 A JP16526478 A JP 16526478A JP 16526478 A JP16526478 A JP 16526478A JP S5590974 A JPS5590974 A JP S5590974A
Authority
JP
Japan
Prior art keywords
scanning
point
mirrors
original surface
mirror
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
JP16526478A
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 JP16526478A priority Critical patent/JPS5590974A/en
Publication of JPS5590974A publication Critical patent/JPS5590974A/en
Pending legal-status Critical Current

Links

Landscapes

  • Optical Systems Of Projection Type Copiers (AREA)

Abstract

PURPOSE: To considerably increase copying speed and obtain the small-size and inexpensive electrophotographic copier by providing a pair of scanning plane mirrors which reciprocatively move while reflecting the light from a static light source to the original surface and alternately performing illuminating and scanning with the right and left mirrors.
CONSTITUTION: A scanning plane mirror 12 moves to the arrow H direction and slit-illuminates the original surface from the I point to the J point while condensing the reflected light from a light source 7 to the original surface. A scanning plane mirror 13 moves to the arrow K direction to slit-illuminates the original surface from the I point to the J point. During the movement of this scanning mirror 13, the mirror 12 resets to the scanning start position. While the left and right mirrors 12, 13 make one reciprocation, the imaging plane mirrors 3, 4 make two reciprocations to perform exposure twice. The scanning plane mirrors 12, 13 do not require quick return, thus their scanning distance may be reduced and the copying speed considerably improved.
COPYRIGHT: (C)1980,JPO&Japio
JP16526478A 1978-12-29 1978-12-29 Exposure device of electrophotographic copier Pending JPS5590974A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP16526478A JPS5590974A (en) 1978-12-29 1978-12-29 Exposure device of electrophotographic copier

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP16526478A JPS5590974A (en) 1978-12-29 1978-12-29 Exposure device of electrophotographic copier

Publications (1)

Publication Number Publication Date
JPS5590974A true JPS5590974A (en) 1980-07-10

Family

ID=15809017

Family Applications (1)

Application Number Title Priority Date Filing Date
JP16526478A Pending JPS5590974A (en) 1978-12-29 1978-12-29 Exposure device of electrophotographic copier

Country Status (1)

Country Link
JP (1) JPS5590974A (en)

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