JPS5663460A - Ink jet head - Google Patents
Ink jet headInfo
- Publication number
- JPS5663460A JPS5663460A JP13975579A JP13975579A JPS5663460A JP S5663460 A JPS5663460 A JP S5663460A JP 13975579 A JP13975579 A JP 13975579A JP 13975579 A JP13975579 A JP 13975579A JP S5663460 A JPS5663460 A JP S5663460A
- Authority
- JP
- Japan
- Prior art keywords
- ink
- magnetic
- magnetic field
- driving circuit
- generating apparatus
- 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
- B41J2/015—Ink jet characterised by the jet generation process
- B41J2/04—Ink jet characterised by the jet generation process generating single droplets or particles on demand
- B41J2/045—Ink jet characterised by the jet generation process generating single droplets or particles on demand by pressure, e.g. electromechanical transducers
- B41J2/055—Devices for absorbing or preventing back-pressure
Landscapes
- Particle Formation And Scattering Control In Inkjet Printers (AREA)
- Special Spraying Apparatus (AREA)
Abstract
PURPOSE:To obtain the ink jet head wherein a magnetic ink is used and the jet efficiency is increased, by arranging a magnetic field generating apparatus upstream with respect to a vibrator unit, the magnetic field generating apparatus preventing the magnetic ink from flowing back when the vibrator unit applies pressure to the magnetic ink in a liquid chamber. CONSTITUTION:When a signal P of information such as letters is inputted, driving pulses (a) are outputted from a driving circuit 9, and the driving pulses (a) are applied through a leading wire 5 to the vibrator unit 4 to vibrate it and to generate pressure waves in the ink within the liquid chamber 3, so that ink droplets are jetted from a nozzle 2 and part of the ink is pushed back toward an ink introducing tube 6. At the same time, the driving circuit 9 sends a signal to a time delay circuit 10 of which the signal (b) drives 9 magnetic field driving circuit 11. The magnetic field driving circuit 11 sends a pulse electric current (c) to a coil 13 to drive the magnetic field generating apparatus 8. The magnetic ink within the ink introducing tube 6 is forced to the opposite wall of the tube 6 by magnetic force so that the tendency of the magnetic ink to flow back may be prevented and therefore the amount of the ink to be jetted from the nozzle 2 can be increased.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP13975579A JPS5663460A (en) | 1979-10-31 | 1979-10-31 | Ink jet head |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP13975579A JPS5663460A (en) | 1979-10-31 | 1979-10-31 | Ink jet head |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS5663460A true JPS5663460A (en) | 1981-05-30 |
Family
ID=15252624
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP13975579A Pending JPS5663460A (en) | 1979-10-31 | 1979-10-31 | Ink jet head |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5663460A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0760286A1 (en) * | 1995-08-25 | 1997-03-05 | Hewlett-Packard Company | Method and apparatus for controlling inkjet nozzle loading |
-
1979
- 1979-10-31 JP JP13975579A patent/JPS5663460A/en active Pending
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0760286A1 (en) * | 1995-08-25 | 1997-03-05 | Hewlett-Packard Company | Method and apparatus for controlling inkjet nozzle loading |
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