JPS5522756A - Digital copying machine - Google Patents
Digital copying machineInfo
- Publication number
- JPS5522756A JPS5522756A JP9603478A JP9603478A JPS5522756A JP S5522756 A JPS5522756 A JP S5522756A JP 9603478 A JP9603478 A JP 9603478A JP 9603478 A JP9603478 A JP 9603478A JP S5522756 A JPS5522756 A JP S5522756A
- Authority
- JP
- Japan
- Prior art keywords
- density
- correcting
- densities
- knobs
- accordance
- 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.)
- Granted
Links
Landscapes
- Fax Reproducing Arrangements (AREA)
- Facsimile Image Signal Circuits (AREA)
- Control Or Security For Electrophotography (AREA)
- Facsimiles In General (AREA)
Abstract
PURPOSE:To render image quality freely controllable, by correcting density of image data in accordance with the output signal of density correcting means provided according to each density level of an original. CONSTITUTION:Density correcting means 4 has density correcting knobs in accordance with 4 density levels 0 to 3, andeach knob slides along vertical lines m0 to m3 of matrix-shaped correcting panel 4M so as to change terminal voltages of variable resistors 60 to 63 linearily. When the knobs are in position A, voltages indicating densities 0 to 3 are delivered from resistors 60 to 63, undergo A/D conversion 70 to 73, and retained by latch circuits 80 to 83. When signals indicating original densities 3 to 0 enter decoder 90 in these state, density correcting circuit NC sends the signals of copy densities 3, 1, 1, 0, thus permitting density correction to be freely carried out in simple structure.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP9603478A JPS5522756A (en) | 1978-08-07 | 1978-08-07 | Digital copying machine |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP9603478A JPS5522756A (en) | 1978-08-07 | 1978-08-07 | Digital copying machine |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS5522756A true JPS5522756A (en) | 1980-02-18 |
JPS6148304B2 JPS6148304B2 (en) | 1986-10-23 |
Family
ID=14154148
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP9603478A Granted JPS5522756A (en) | 1978-08-07 | 1978-08-07 | Digital copying machine |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5522756A (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS57500353A (en) * | 1980-04-04 | 1982-02-25 | ||
JPS57131169A (en) * | 1980-12-25 | 1982-08-13 | Matsushita Giken Kk | Gradation compensation device |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS4852440A (en) * | 1971-11-02 | 1973-07-23 | ||
JPS493548A (en) * | 1972-04-19 | 1974-01-12 | ||
JPS52108822A (en) * | 1976-03-08 | 1977-09-12 | Eastman Kodak Co | Copying apparatus and method |
-
1978
- 1978-08-07 JP JP9603478A patent/JPS5522756A/en active Granted
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS4852440A (en) * | 1971-11-02 | 1973-07-23 | ||
JPS493548A (en) * | 1972-04-19 | 1974-01-12 | ||
JPS52108822A (en) * | 1976-03-08 | 1977-09-12 | Eastman Kodak Co | Copying apparatus and method |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS57500353A (en) * | 1980-04-04 | 1982-02-25 | ||
JPS57131169A (en) * | 1980-12-25 | 1982-08-13 | Matsushita Giken Kk | Gradation compensation device |
JPH0381346B2 (en) * | 1980-12-25 | 1991-12-27 | Matsushita Giken Kk |
Also Published As
Publication number | Publication date |
---|---|
JPS6148304B2 (en) | 1986-10-23 |
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