JPS5521050A - Electrophotographic printing device - Google Patents
Electrophotographic printing deviceInfo
- Publication number
- JPS5521050A JPS5521050A JP9365478A JP9365478A JPS5521050A JP S5521050 A JPS5521050 A JP S5521050A JP 9365478 A JP9365478 A JP 9365478A JP 9365478 A JP9365478 A JP 9365478A JP S5521050 A JPS5521050 A JP S5521050A
- Authority
- JP
- Japan
- Prior art keywords
- dots
- pieces
- printing
- sine
- excited
- 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 print in uniform density regardless of the number of dots, by attenuating the sine voltage to n(N-n)/N, when printing n pieces of dots by using N pieces of laser beams outputted through a crystal body which is excited by N sets of sine voltages differing in frequency.
CONSTITUTION: For instance, 7 pieces of sine wave oscillators 7a to 7g differing in frequency are connected to attenuators 9g to 9a of 0, 1/7, 2/7 ..., respectively. By applying printing signals to terminal 8g, when seven dots are selected and switches 6a to 6g are closed, a crystal body such as lead molybdata is excited by 7 sets of sine voltages, and dots are printed with laser beams 5a to 5h at 1/7 intensity of laser beam 2. When printing signals are applied to terminal 8b and switches 6a and 6g are closed to select two dots, the dots are printed with beams 5a, 5b at the intensity of (1-5/7)×1/2=1/7 of the beam 2 through attenuator 9b, so that the printing density may be constant regardless of the number of dots.
COPYRIGHT: (C)1980,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP9365478A JPS5521050A (en) | 1978-08-02 | 1978-08-02 | Electrophotographic printing device |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP9365478A JPS5521050A (en) | 1978-08-02 | 1978-08-02 | Electrophotographic printing device |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS5521050A true JPS5521050A (en) | 1980-02-14 |
Family
ID=14088360
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP9365478A Pending JPS5521050A (en) | 1978-08-02 | 1978-08-02 | Electrophotographic printing device |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5521050A (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH03132718A (en) * | 1989-10-19 | 1991-06-06 | Fuji Photo Film Co Ltd | Simultaneous multi-beam optical modulator |
JPH041719A (en) * | 1990-04-19 | 1992-01-07 | Fuji Photo Film Co Ltd | Simultaneous multibeam optical modulator |
-
1978
- 1978-08-02 JP JP9365478A patent/JPS5521050A/en active Pending
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH03132718A (en) * | 1989-10-19 | 1991-06-06 | Fuji Photo Film Co Ltd | Simultaneous multi-beam optical modulator |
JPH041719A (en) * | 1990-04-19 | 1992-01-07 | Fuji Photo Film Co Ltd | Simultaneous multibeam optical modulator |
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