JPS564465A - Color ink jet printer - Google Patents
Color ink jet printerInfo
- Publication number
- JPS564465A JPS564465A JP8093279A JP8093279A JPS564465A JP S564465 A JPS564465 A JP S564465A JP 8093279 A JP8093279 A JP 8093279A JP 8093279 A JP8093279 A JP 8093279A JP S564465 A JPS564465 A JP S564465A
- Authority
- JP
- Japan
- Prior art keywords
- signal
- color
- circuit
- cyanogen
- magenta
- 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
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
- B41J—TYPEWRITERS; SELECTIVE PRINTING MECHANISMS, i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME; CORRECTION OF TYPOGRAPHICAL ERRORS
- B41J2/00—Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed
- B41J2/005—Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed characterised by bringing liquid or particles selectively into contact with a printing material
- B41J2/01—Ink jet
- B41J2/21—Ink jet for multi-colour printing
Abstract
PURPOSE:To raise the value of a photoprint by a method wherein a color video signal is dissolved into signals of brightness and chroma and, according to this, a color arrangement of yellow, magenta and cyanogen is determined, while an ink drip in black is jetted only at a specific time. CONSTITUTION:The input video signal Vid of a color bar signal whose saturation degree is 100% and which changes, for instance, from white W to yellow y, cyanogen c, green G, grey g, magenta m, red R, blue B and black b sequentially is amplified in a video amplifying circuit 10 and fed to a color regeneration circuit 11 and an input control circuit 17. And, while a chroma signal Cr being separated, a red difference signal R-Y, a green difference signal G-Y and a blue difference signal B-Y are formed and outputted to a color change circuit 12, and, an inversion brightness signal impressed on the circuit 12 being joined, the conversion to yellow y, magenta m and cyanogen c is performed, thus an ink drip in black in accordance with the brightness signal is jetted only when the chroma signal lower than the level of colorlessness comes.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP8093279A JPS564465A (en) | 1979-06-26 | 1979-06-26 | Color ink jet printer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP8093279A JPS564465A (en) | 1979-06-26 | 1979-06-26 | Color ink jet printer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS564465A true JPS564465A (en) | 1981-01-17 |
Family
ID=13732210
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP8093279A Pending JPS564465A (en) | 1979-06-26 | 1979-06-26 | Color ink jet printer |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS564465A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS59163963A (en) * | 1983-03-08 | 1984-09-17 | Canon Inc | Color picture forming method |
| JPS60242124A (en) * | 1984-05-14 | 1985-12-02 | Nippon Electric Glass Co Ltd | Conveyor apparatus for glass tubes |
-
1979
- 1979-06-26 JP JP8093279A patent/JPS564465A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS59163963A (en) * | 1983-03-08 | 1984-09-17 | Canon Inc | Color picture forming method |
| JPS60242124A (en) * | 1984-05-14 | 1985-12-02 | Nippon Electric Glass Co Ltd | Conveyor apparatus for glass tubes |
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