JPS5739972A - Driving method for ink jet head - Google Patents
Driving method for ink jet headInfo
- Publication number
- JPS5739972A JPS5739972A JP11672780A JP11672780A JPS5739972A JP S5739972 A JPS5739972 A JP S5739972A JP 11672780 A JP11672780 A JP 11672780A JP 11672780 A JP11672780 A JP 11672780A JP S5739972 A JPS5739972 A JP S5739972A
- Authority
- JP
- Japan
- Prior art keywords
- pulse
- impressed
- time lag
- driving pulse
- driving
- 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
- B41J2/2121—Ink jet for multi-colour printing characterised by dot size, e.g. combinations of printed dots of different diameter
- B41J2/2128—Ink jet for multi-colour printing characterised by dot size, e.g. combinations of printed dots of different diameter by means of energy modulation
Abstract
PURPOSE:To widen the range of gradation by changing the time lag of the generation of a driving pulse behind the generation of a timing pulse which is synchronous to the movement of a carriage. CONSTITUTION:With a time lag of T1 behind the leading edge of the timing pulse 22 generated synchronously with the movement of the carriage, the driving pulse 21 for jetting the ink is impressed on a piezoelectric element, and with a further time lag of T2 corresponding to gradation data, the driving pulse 20 is impressed on the piezoelectric element. The driving pulse 20 is always impressed earlier than the driving pulse 21, and the time lag T2 between the two driving pulses is set to be longer for a lighter gradation, i.e., a smaller volume of the ink droplet jetted. When the pulse 20 is impressed, since the increase in the pressure in the pressure chamber is slow, the ink tending to be jetted can not overcome the surface tension and it is retracted into a nozzle after forming a meniscus which is convexed to the outside of the nozzle.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP11672780A JPS5739972A (en) | 1980-08-25 | 1980-08-25 | Driving method for ink jet head |
| US06/291,904 US4409596A (en) | 1980-08-12 | 1981-08-11 | Method and apparatus for driving an ink jet printer head |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP11672780A JPS5739972A (en) | 1980-08-25 | 1980-08-25 | Driving method for ink jet head |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS5739972A true JPS5739972A (en) | 1982-03-05 |
Family
ID=14694295
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP11672780A Pending JPS5739972A (en) | 1980-08-12 | 1980-08-25 | Driving method for ink jet head |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5739972A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5967241U (en) * | 1982-10-27 | 1984-05-07 | マークテック株式会社 | dot matrix printing device |
| JPS59143653A (en) * | 1983-02-05 | 1984-08-17 | Konishiroku Photo Ind Co Ltd | Liquid discharge apparatus |
-
1980
- 1980-08-25 JP JP11672780A patent/JPS5739972A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5967241U (en) * | 1982-10-27 | 1984-05-07 | マークテック株式会社 | dot matrix printing device |
| JPS59143653A (en) * | 1983-02-05 | 1984-08-17 | Konishiroku Photo Ind Co Ltd | Liquid discharge apparatus |
| JPH0330507B2 (en) * | 1983-02-05 | 1991-04-30 |
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