JPS55115059A - Exposure control unit of copying machine - Google Patents
Exposure control unit of copying machineInfo
- 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
Links
Landscapes
- 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
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)
| 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 |
-
1979
- 1979-02-28 JP JP2269079A patent/JPS55115059A/en active Pending
Cited By (5)
| 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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