JPS55115059A - Exposure control unit of copying machine - Google Patents

Exposure control unit of copying machine

Info

Publication number
JPS55115059A
JPS55115059A JP2269079A JP2269079A JPS55115059A JP S55115059 A JPS55115059 A JP S55115059A JP 2269079 A JP2269079 A JP 2269079A JP 2269079 A JP2269079 A JP 2269079A JP S55115059 A JPS55115059 A JP S55115059A
Authority
JP
Japan
Prior art keywords
glass
disposed
optical transmission
light
original
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
JP2269079A
Other languages
Japanese (ja)
Inventor
Shigeyo Matsumoto
Hisashi Murakami
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 JP2269079A priority Critical patent/JPS55115059A/en
Publication of JPS55115059A publication Critical patent/JPS55115059A/en
Pending legal-status Critical Current

Links

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

Abstract

PURPOSE: To achieve the compactification of the unit without producing the stripe patterns intrinsic to focusing type optical transmission bodies by providing a light quantity control plate crossing the optical path between the exposure light source and orignal parallel with the original.
CONSTITUTION: The copying machine is so arranged that the orignal O is placed on its contact glass 1 with the copying original surface being faced downward. Below this is disposed a photosensitive drum 2. The aggregate of focusing type optical transmission bodyes 3 is disposed between the glass 1 and drum 2. A reflecting plate 4 having U-form section is disposed between the glass 1 and drum 2 and an exposure light source 5 is disposed within this reflecting plate 4. The reflecting plate 4 is made to have a reflecting mirror surface at its inside surface and has a light output 6 opened toward the glass plate 1. The light emitted by the light source 5 goes through the light exit port 6, reaches the glass 1 and lights the original O. The reflected light thereof goes through the optical transmission bodies 3 and reaches the photoreceptor 2 so that its exposure is done. This obviates the production of the stripe patterns intrinsic to the optical transmission bodies and permits the compactification of the unit.
COPYRIGHT: (C)1980,JPO&Japio
JP2269079A 1979-02-28 1979-02-28 Exposure control unit of copying machine Pending JPS55115059A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2269079A JPS55115059A (en) 1979-02-28 1979-02-28 Exposure control unit of copying machine

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2269079A JPS55115059A (en) 1979-02-28 1979-02-28 Exposure control unit of copying machine

Publications (1)

Publication Number Publication Date
JPS55115059A true JPS55115059A (en) 1980-09-04

Family

ID=12089861

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2269079A Pending JPS55115059A (en) 1979-02-28 1979-02-28 Exposure control unit of copying machine

Country Status (1)

Country Link
JP (1) JPS55115059A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5859058U (en) * 1981-10-19 1983-04-21 キヤノン株式会社 Original illumination device
JPS58144345U (en) * 1982-03-25 1983-09-29 ウシオ電機株式会社 Light source device for copying machines
JPS62179735U (en) * 1986-05-02 1987-11-14
JPH0223160U (en) * 1988-07-22 1990-02-15

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5859058U (en) * 1981-10-19 1983-04-21 キヤノン株式会社 Original illumination device
JPH0114033Y2 (en) * 1981-10-19 1989-04-25
JPS58144345U (en) * 1982-03-25 1983-09-29 ウシオ電機株式会社 Light source device for copying machines
JPS62179735U (en) * 1986-05-02 1987-11-14
JPH0223160U (en) * 1988-07-22 1990-02-15

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