JPS5654462A - Copying machine - Google Patents
Copying machineInfo
- Publication number
- JPS5654462A JPS5654462A JP13113079A JP13113079A JPS5654462A JP S5654462 A JPS5654462 A JP S5654462A JP 13113079 A JP13113079 A JP 13113079A JP 13113079 A JP13113079 A JP 13113079A JP S5654462 A JPS5654462 A JP S5654462A
- Authority
- JP
- Japan
- Prior art keywords
- copying
- original platen
- optical axis
- moving speed
- magnification
- 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
- Exposure Or Original Feeding In Electrophotography (AREA)
- Variable Magnification In Projection-Type Copying Machines (AREA)
Abstract
PURPOSE:To make possible copying of further scale-down magnification without changing the optical system of a predetermined magnification copying system at all by providing an original plane obliquely with respect to the plane rectangular to the optical axis in consideration for the focal depth within the slit width. CONSTITUTION:An original platen 1 is so obliquely provided as to assume an angle of theta with respect to the plane rectangular to the optical axis as compared to the position of the original platen 1' at the unmagnification copying and is so arranged as to move at an equal speed in the obliquely provided direction. The relation between the slit width W of a stationary slit 2 and theta is made 1/2Wtantheta <=DELTAh (DELTAh is the focal depth of a lens 3). If the peripheral speed of a photoreceptor 4 is defined as v0, the component of the moving speed of the original platen 1 in the direction orthogonal to the optical axis is v0, from the unmagnification copying system, and the moving speed of the original platen in its moving speed becomes v0/costheta. Thereby, the copying of further scale-down magnification may be performed without changing predetermined magnification copying optical system at all.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP13113079A JPS5654462A (en) | 1979-10-11 | 1979-10-11 | Copying machine |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP13113079A JPS5654462A (en) | 1979-10-11 | 1979-10-11 | Copying machine |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS5654462A true JPS5654462A (en) | 1981-05-14 |
Family
ID=15050677
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP13113079A Pending JPS5654462A (en) | 1979-10-11 | 1979-10-11 | Copying machine |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5654462A (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH01290765A (en) * | 1988-05-16 | 1989-11-22 | Toshiba Corp | Sputtering target |
JPH02201468A (en) * | 1988-12-16 | 1990-08-09 | Xerox Corp | Image former having criscross anamophic expansion/reduction capacity |
-
1979
- 1979-10-11 JP JP13113079A patent/JPS5654462A/en active Pending
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH01290765A (en) * | 1988-05-16 | 1989-11-22 | Toshiba Corp | Sputtering target |
JPH02201468A (en) * | 1988-12-16 | 1990-08-09 | Xerox Corp | Image former having criscross anamophic expansion/reduction capacity |
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