JPS5799663A - Driving device for optical system of copying machine, or the like - Google Patents
Driving device for optical system of copying machine, or the likeInfo
- Publication number
- JPS5799663A JPS5799663A JP17605180A JP17605180A JPS5799663A JP S5799663 A JPS5799663 A JP S5799663A JP 17605180 A JP17605180 A JP 17605180A JP 17605180 A JP17605180 A JP 17605180A JP S5799663 A JPS5799663 A JP S5799663A
- Authority
- JP
- Japan
- Prior art keywords
- moving body
- optical system
- force
- generated
- spring
- 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
- G03B—APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
- G03B27/00—Photographic printing apparatus
- G03B27/32—Projection printing apparatus, e.g. enlarger, copying camera
- G03B27/52—Details
- G03B27/522—Projection optics
- G03B27/525—Projection optics for slit exposure
- G03B27/526—Projection optics for slit exposure in which the projection optics move
Landscapes
- Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- General Physics & Mathematics (AREA)
- Exposure Or Original Feeding In Electrophotography (AREA)
- Optical Systems Of Projection Type Copiers (AREA)
Abstract
PURPOSE:To stop a moving body, which includes an optical system, at an optional position by providing a compensating-force generator by a member which includes a spring, and by canceling the components of force, generated by the weight of the moving body, by the generated force. CONSTITUTION:When a copying machine is in scanning operation for exposure, a current is supplied to the coil 8 of a linear motor RM, so that a lens frame 5 moves along guide rods 6 and 7 in a direction X. A moving body including this optical system, when a wire 24 moves as shown by an arrow Y through the rotation of a motor 14, uncoils a spiral spring 17 during the lowering of a base 3 or coils the spring 17 round a fixed shaft 18 during the elevation of the base 3, and consequently force which is nearly as large as the absolute value of the component of force generated in the moving direction of the moving body and has the opposite direction is generated and applied to the moving body, so that the moving body including the optical system is placed in a still state at an optional position.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP17605180A JPS5799663A (en) | 1980-12-13 | 1980-12-13 | Driving device for optical system of copying machine, or the like |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP17605180A JPS5799663A (en) | 1980-12-13 | 1980-12-13 | Driving device for optical system of copying machine, or the like |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS5799663A true JPS5799663A (en) | 1982-06-21 |
Family
ID=16006852
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP17605180A Pending JPS5799663A (en) | 1980-12-13 | 1980-12-13 | Driving device for optical system of copying machine, or the like |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5799663A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH0358640U (en) * | 1990-09-27 | 1991-06-07 |
-
1980
- 1980-12-13 JP JP17605180A patent/JPS5799663A/en active Pending
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH0358640U (en) * | 1990-09-27 | 1991-06-07 |
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