JPS57192975A - Electrophotographic copying machine - Google Patents
Electrophotographic copying machineInfo
- Publication number
- JPS57192975A JPS57192975A JP7906481A JP7906481A JPS57192975A JP S57192975 A JPS57192975 A JP S57192975A JP 7906481 A JP7906481 A JP 7906481A JP 7906481 A JP7906481 A JP 7906481A JP S57192975 A JPS57192975 A JP S57192975A
- Authority
- JP
- Japan
- Prior art keywords
- optical system
- image formation
- formation optical
- axial direction
- wave guide
- 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
Classifications
-
- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03G—ELECTROGRAPHY; ELECTROPHOTOGRAPHY; MAGNETOGRAPHY
- G03G15/00—Apparatus for electrographic processes using a charge pattern
- G03G15/04—Apparatus for electrographic processes using a charge pattern for exposing, i.e. imagewise exposure by optically projecting the original image on a photoconductive recording material
- G03G15/041—Apparatus for electrographic processes using a charge pattern for exposing, i.e. imagewise exposure by optically projecting the original image on a photoconductive recording material with variable magnification
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Exposure Or Original Feeding In Electrophotography (AREA)
- Variable Magnification In Projection-Type Copying Machines (AREA)
Abstract
PURPOSE:To improve space efficiency by fitting a refractive index condensing type slag type light wave guide with variable magnification characteristics as an image formation optical system and exposing light in the x-axial direction to which a manuscript board or the like moves at a specific moving speed. CONSTITUTION:A refractive index condensing type slag type light wave guide 4 with variable magnification characteristics of change magnification My is fitted as an image formation optical system in the y-axial direction intersecting with the moving direction, x-axial direction, of a manuscript board, etc. in an surface intersecting with the optical axis of the image formation optical system. The relative speed among 3 elements, the manuscript board 6, the image formation optical system 4 and a photosensitive element 7, is set up so that light is exposed in the x-axial direction mentioned above at a moving speed of My times the scanning speed at the time of same magnification. Said variable magnification rate of the image formation optical system 4 is set up by fixing the values such as line length Z0 of the light wave guide 4 and the shown distance (l1+ l0) to appropriate values.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP7906481A JPS57192975A (en) | 1981-05-25 | 1981-05-25 | Electrophotographic copying machine |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP7906481A JPS57192975A (en) | 1981-05-25 | 1981-05-25 | Electrophotographic copying machine |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS57192975A true JPS57192975A (en) | 1982-11-27 |
Family
ID=13679451
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP7906481A Pending JPS57192975A (en) | 1981-05-25 | 1981-05-25 | Electrophotographic copying machine |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS57192975A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US10908544B2 (en) * | 2019-06-05 | 2021-02-02 | Canon Kabushiki Kaisha | Discriminating device and image forming apparatus |
Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5391029A (en) * | 1977-01-22 | 1978-08-10 | Babcock Hitachi Kk | Followwup system pipe cooling welding method of welding heat source |
-
1981
- 1981-05-25 JP JP7906481A patent/JPS57192975A/en active Pending
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5391029A (en) * | 1977-01-22 | 1978-08-10 | Babcock Hitachi Kk | Followwup system pipe cooling welding method of welding heat source |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US10908544B2 (en) * | 2019-06-05 | 2021-02-02 | Canon Kabushiki Kaisha | Discriminating device and image forming apparatus |
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