JPS5517178A - Scanning type exposure device - Google Patents

Scanning type exposure device

Info

Publication number
JPS5517178A
JPS5517178A JP9059978A JP9059978A JPS5517178A JP S5517178 A JPS5517178 A JP S5517178A JP 9059978 A JP9059978 A JP 9059978A JP 9059978 A JP9059978 A JP 9059978A JP S5517178 A JPS5517178 A JP S5517178A
Authority
JP
Japan
Prior art keywords
slit
original
reflected
changing
equal
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
JP9059978A
Other languages
Japanese (ja)
Inventor
Ryuzo Suzuki
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 JP9059978A priority Critical patent/JPS5517178A/en
Publication of JPS5517178A publication Critical patent/JPS5517178A/en
Pending legal-status Critical Current

Links

Landscapes

  • Variable Magnification In Projection-Type Copying Machines (AREA)
  • Exposure Or Original Feeding In Electrophotography (AREA)

Abstract

PURPOSE:To perform changing over of equal and variable power projection without changing the relative positions of optical elements by letting the reflected light of scanning radiation light from the original be reflected by one of two sets of reflecting mirrors which are selected through a slit. CONSTITUTION:Illuminating light, slit 20, reflecting mirrors 11, 15 move integrally at an equal speed parallel with the original 0 and the original 0 is scanned and radiated. This radiation light reflects from the original 0 and is reflected by the reflecting mirror 11 or 15 selected according to the position of the slit 20. The reflected light then goes through different optical lengths and is projected to a turning photosensitive drum 1. Hence, the changing over of equal power and variable power is accomplished simply by moving the slit 20 without changing the relative positions of optical elements. Thereby, the constitution of the scanning type exposure system may be made simple and small in size.
JP9059978A 1978-07-25 1978-07-25 Scanning type exposure device Pending JPS5517178A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP9059978A JPS5517178A (en) 1978-07-25 1978-07-25 Scanning type exposure device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP9059978A JPS5517178A (en) 1978-07-25 1978-07-25 Scanning type exposure device

Publications (1)

Publication Number Publication Date
JPS5517178A true JPS5517178A (en) 1980-02-06

Family

ID=14002926

Family Applications (1)

Application Number Title Priority Date Filing Date
JP9059978A Pending JPS5517178A (en) 1978-07-25 1978-07-25 Scanning type exposure device

Country Status (1)

Country Link
JP (1) JPS5517178A (en)

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