JPS6440864A - Exposure lighting device for copying machine - Google Patents
Exposure lighting device for copying machineInfo
- Publication number
- JPS6440864A JPS6440864A JP19792887A JP19792887A JPS6440864A JP S6440864 A JPS6440864 A JP S6440864A JP 19792887 A JP19792887 A JP 19792887A JP 19792887 A JP19792887 A JP 19792887A JP S6440864 A JPS6440864 A JP S6440864A
- Authority
- JP
- Japan
- Prior art keywords
- fluorescent lamp
- copying
- original
- preheated
- prolong
- 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
Abstract
PURPOSE:To preheat a fluorescent lamp adequately before lighting and to prolong the service life of its tube, and to eliminate a waiting time by detecting preparatory operation for copying start and preheating the fluorescent lamp, and lighting the fluorescent lamp with a copying start signal. CONSTITUTION:The opening operation of an original cover 9 for placing an original on original glass 2 as preparatory operation for copying is detected by a magnet 21 fitted to the original cover 9 and a reed switch 22 which responds to the contacting/leaving operation of the magnet 21. The filament of the fluorescent lamp 10 is preheated with a detection signal of operation in a relatively early stage. Then when a mode selection key is operated and then a print key for the start of copying is operated, the fluorescent lamp 10 is turned on. Consequently, the fluorescent lamp is preheated neither too much nor too less simultaneously with power-on operation to prolong the life of the tube, and the waiting time for the preheating is eliminated.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP19792887A JPS6440864A (en) | 1987-08-06 | 1987-08-06 | Exposure lighting device for copying machine |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP19792887A JPS6440864A (en) | 1987-08-06 | 1987-08-06 | Exposure lighting device for copying machine |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS6440864A true JPS6440864A (en) | 1989-02-13 |
Family
ID=16382611
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP19792887A Pending JPS6440864A (en) | 1987-08-06 | 1987-08-06 | Exposure lighting device for copying machine |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS6440864A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5153745A (en) * | 1990-09-28 | 1992-10-06 | Xerox Corporation | Method and apparatus for compensating for illumination variations of a lamp in a document scanning system following extended lamp inactivity |
-
1987
- 1987-08-06 JP JP19792887A patent/JPS6440864A/en active Pending
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5153745A (en) * | 1990-09-28 | 1992-10-06 | Xerox Corporation | Method and apparatus for compensating for illumination variations of a lamp in a document scanning system following extended lamp inactivity |
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