JPS5521049A - Electrophotographic printing device - Google Patents
Electrophotographic printing deviceInfo
- Publication number
- JPS5521049A JPS5521049A JP9365378A JP9365378A JPS5521049A JP S5521049 A JPS5521049 A JP S5521049A JP 9365378 A JP9365378 A JP 9365378A JP 9365378 A JP9365378 A JP 9365378A JP S5521049 A JPS5521049 A JP S5521049A
- Authority
- JP
- Japan
- Prior art keywords
- differing
- frequency
- dots
- pieces
- sets
- 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 keep the printing density constant, by selectively applying ultrasonic vibrations of 2N-1 sets differing in frequency to crystal bodies of lead molybdata or the like to deflect the light, and forming dot latent image with laser beams of less than N pieces.
CONSTITUTION: According to the number of dots to be printed, switches 6a, 6b ... are closed, and, for instance, seven pieces of ultrasonic wave oscillators 7a, 7b ... differing in frequency are selectively connected, while control pulses are applied to specified terminals 9a, 9b ..., and corresponding AND gates 11a, 11b ... are opened. As a result, (7-1) pieces of ultrasonic wave transmitters 7h, 7i ... differing in frequency through mixers 10a, 10b ... differing in the number of mixing are selected, and a crystal body 4 of lead molybdata or the like is excited by (7×2-1) sets of ultrasonic waves differing in frequency, regardless of the selected number of dots, and the crystal body grating change is controlled, so that a laser beam 2 becomes (7×2-1) sets of light beams having the same intensity and differing in the direction of deflection, according to the frequency of ultrasonic wave applied. Therefore, a latent image uniform in density may be formed on a drum 1 by the light beams not shielded by a shielding plate 8, regardless of the number of dots to be printed.
COPYRIGHT: (C)1980,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP9365378A JPS5521049A (en) | 1978-08-02 | 1978-08-02 | Electrophotographic printing device |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP9365378A JPS5521049A (en) | 1978-08-02 | 1978-08-02 | Electrophotographic printing device |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS5521049A true JPS5521049A (en) | 1980-02-14 |
Family
ID=14088331
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP9365378A Pending JPS5521049A (en) | 1978-08-02 | 1978-08-02 | Electrophotographic printing device |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5521049A (en) |
-
1978
- 1978-08-02 JP JP9365378A patent/JPS5521049A/en active Pending
Similar Documents
Publication | Publication Date | Title |
---|---|---|
EP0012952B2 (en) | Laser beam scanning system | |
JPS5295229A (en) | Method of apparatus for nonnimpact printing | |
JPS55142313A (en) | Control circuit for multiibeam acoustic optical cell using bragg angle for generating multiple outgoing laser beam | |
GB2014748A (en) | Electrophotographic material for obtaining toner image and process for forming printing plate by using the same | |
DE2460218A1 (en) | LINEAR DATA INPUT CONVERTER | |
JPS5521049A (en) | Electrophotographic printing device | |
ES458647A2 (en) | Apparatus for mixing materials | |
DE2435815A1 (en) | RECORDING DEVICE | |
US4636807A (en) | Apparatus and method for light value gray scale recording | |
GB1045563A (en) | Apparatus for controlling a beam of electromagnetic radiation | |
JPS5577187A (en) | Laser oscillating device | |
JPS6454449A (en) | Reduction in short-time scale reciprocity effect in microcapsulizing acrylate system | |
JPS5521050A (en) | Electrophotographic printing device | |
JPS57167057A (en) | Optical printer | |
GB1356499A (en) | Printing plate blank and processing method | |
ATE76245T1 (en) | DEVICE FOR RAPID HEATING OF A DIELECTRIC PRODUCT BY MICROWAVES. | |
JPS6459376A (en) | Image forming device | |
DE3419852A1 (en) | Method and device for direct high-speed printing | |
JPS57104952A (en) | Printing machine | |
JPS547930A (en) | Development of resist | |
JPS59212822A (en) | Acousto-optical apparatus | |
JPS5734529A (en) | Optical changeover switch | |
JPS5511270A (en) | Ultrasonic light modulator | |
JPS6441900A (en) | X-ray exposure system | |
JPS54157626A (en) | Recording method |