JPS5569171A - Exposure part protective device of cathode ray tube in electrophotographic apparatus - Google Patents
Exposure part protective device of cathode ray tube in electrophotographic apparatusInfo
- Publication number
- JPS5569171A JPS5569171A JP14206278A JP14206278A JPS5569171A JP S5569171 A JPS5569171 A JP S5569171A JP 14206278 A JP14206278 A JP 14206278A JP 14206278 A JP14206278 A JP 14206278A JP S5569171 A JPS5569171 A JP S5569171A
- Authority
- JP
- Japan
- Prior art keywords
- ray tube
- cathode ray
- electrophotographic apparatus
- type light
- light transmitter
- 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
- Printers Or Recording Devices Using Electromagnetic And Radiation Means (AREA)
- Exposure Or Original Feeding In Electrophotography (AREA)
- Projection-Type Copiers In General (AREA)
Abstract
PURPOSE: To prevent drop of light transmittance of focusing type light transmitter, by wrapping the surface of the focusing type light transmitter of cathode ray tube exposure part with a cover which opens only when operating, in an electrophotographic apparatus possessing two exposure means of optical system and cathode ray tube system.
CONSTITUTION: In an electrophotographic apparatus having two exposure means of the optical system intended to image and expose on a photosensitive drum 1 and cathode ray tube system, the surface of a focusing type light transmitter 51 of cathode ray tube 5 is wrapped with a covering member 54 which opens only when operating That is, while the cathode ray tube 5 is not operating, a lever 55 is pulled by a spring 57 and turns downwards, so that a shutter plate 54 closes a window hole 53 in the front of a cover 52. Accordingly, floating toner particles in optical copying operation do not deposit on the surface of the focusing type light transmitter 51. When the cathode ray tube 5 operates, a solenoid 56 is excited, and the lever 55 is pulled up, then the shutter plate 54 opens the front window hole 53.
COPYRIGHT: (C)1980,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP14206278A JPS5569171A (en) | 1978-11-17 | 1978-11-17 | Exposure part protective device of cathode ray tube in electrophotographic apparatus |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP14206278A JPS5569171A (en) | 1978-11-17 | 1978-11-17 | Exposure part protective device of cathode ray tube in electrophotographic apparatus |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS5569171A true JPS5569171A (en) | 1980-05-24 |
Family
ID=15306532
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP14206278A Pending JPS5569171A (en) | 1978-11-17 | 1978-11-17 | Exposure part protective device of cathode ray tube in electrophotographic apparatus |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5569171A (en) |
-
1978
- 1978-11-17 JP JP14206278A patent/JPS5569171A/en active Pending
Similar Documents
Publication | Publication Date | Title |
---|---|---|
JPS5393842A (en) | Method and apparatus for developing electrostatic latent image | |
GB1241846A (en) | Camera | |
JPS5430043A (en) | Copier acting as facsimile | |
JPS5569171A (en) | Exposure part protective device of cathode ray tube in electrophotographic apparatus | |
JPS5445137A (en) | Imge forming method | |
JPS56130774A (en) | Shutter device of electrophotographic copying machine | |
JPS5328430A (en) | Shutter o pen-close mechanism for electro-photographic device | |
JPS5337026A (en) | Electrophotographic toner | |
JPS5735882A (en) | Electrophotographic copier | |
JPS57136663A (en) | Image formation device equipment with automatic original conveyor | |
JPS5726870A (en) | Electrophotographic device | |
JPS54119250A (en) | Exposure device of electronic copier | |
JPS5550271A (en) | Exposure optical system of electrophotographic copier | |
JPS5473051A (en) | Electrophotographic method for copying plural sheets | |
JPS55110271A (en) | Electrophotographic apparatus | |
GB893011A (en) | Improvements in and relating to photographic and like reproduction methods and apparatus and materials for carrying such methods into effect | |
JPS5691248A (en) | Picture forming apparatus | |
JPS535631A (en) | Method and device for preventing toner from scattering to optical system of electrophotographic copier | |
JPS55161257A (en) | Stray light preventing device in electric discharger | |
JPS546543A (en) | Electrophotographic method | |
JPS5677834A (en) | Data back of camera | |
JPS53143227A (en) | Electrophotography | |
JPS57171367A (en) | Electrostatic printer | |
JPS5543549A (en) | Photoreceptor for electrophotography | |
JPS5550269A (en) | Copying apparatus |