JPS559576A - Dot image exposure device - Google Patents
Dot image exposure deviceInfo
- Publication number
- JPS559576A JPS559576A JP8313678A JP8313678A JPS559576A JP S559576 A JPS559576 A JP S559576A JP 8313678 A JP8313678 A JP 8313678A JP 8313678 A JP8313678 A JP 8313678A JP S559576 A JPS559576 A JP S559576A
- Authority
- JP
- Japan
- Prior art keywords
- dot
- drum
- position information
- spot
- images
- 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)
Abstract
PURPOSE: To obtain dot images of high speed and high resolution by performing dot formation in one picture element through one exposure scanning.
CONSTITUTION: When a density image signal 104 is inputted to a driving circuit 102, the light emitting element selection driving signal corresponding to the density level of the image signal is applied to an LED array 100 and the corresponding LED group lights up and the dot-forming projecting light 113 is direction-changed 114 thence images a dot exposure spot 120 on a film 112 plane. A drum 109 is rotated at a constant speed to obtain the position information on the spot 120 with respect to the drum rotating direction. Further, a housing 117, connecting rod 116 and substrate 101 are moved parallel to the drum surface by a motor 119 driven in correspondence to the drum revolution by way of a feed screw 118, whereby the position information of the spot 120 is obtained. The signal 104 is controlled by these two sets of the position information, whereby the dot images are subsequently exposed.
COPYRIGHT: (C)1980,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP8313678A JPS559576A (en) | 1978-07-07 | 1978-07-07 | Dot image exposure device |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP8313678A JPS559576A (en) | 1978-07-07 | 1978-07-07 | Dot image exposure device |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS559576A true JPS559576A (en) | 1980-01-23 |
Family
ID=13793779
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP8313678A Pending JPS559576A (en) | 1978-07-07 | 1978-07-07 | Dot image exposure device |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS559576A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS56162765A (en) * | 1980-05-20 | 1981-12-14 | Ricoh Co Ltd | Electrophotographic copier |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS49101101A (en) * | 1972-12-22 | 1974-09-25 | ||
JPS5054215A (en) * | 1973-05-09 | 1975-05-13 |
-
1978
- 1978-07-07 JP JP8313678A patent/JPS559576A/en active Pending
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS49101101A (en) * | 1972-12-22 | 1974-09-25 | ||
JPS5054215A (en) * | 1973-05-09 | 1975-05-13 |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS56162765A (en) * | 1980-05-20 | 1981-12-14 | Ricoh Co Ltd | Electrophotographic copier |
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