US4868585A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Ink dot printer
Assignee: Toshiba TEC Corp
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Filing: 1987-08-26
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Granted: 1989-09-19
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Expires: 2007-08-26
Abstract
Abstract In an ink dot printer for forming a picture with ink by generating an electric field between a recording electrode and an opposed electrode confronting each other through a recording medium and thereby sputtering the ink from the fore end of the recording electrode toward the recording medium, the present invention employs a rod-shaped recording electrode composed of a conductive material with a multiplicity of longitudinal ink passages formed therein, hence enhancing the ink fluidity in the recording electrode to enable fast printing.
Inventors
- 👤 Hisashi Nishikawa
- 👤 Mitsuharu Endo
- 👤 Masashi Shimosato
- 👤 Yasunobu Terao
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 07:16
CPC Classifications
B; B41; B41J; B41J2/00; B41J2/005; B41J2/01; B41J2/015; B41J2/04; B41J2/06; B41J2002/061
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
107 words
An ink dot printer wherein a recording electrode fed with ink at the fore end thereof and an opposed electrode are so positioned as to confront each other through a recording medium, and a picture formed on said recording medium with the ink sputtered thereto from the fore end of said recording electrode by generating an electric field between said recording electrode and opposed electrode, said ink dot printer characterized in that said recording electrode consist of a rod-shaped member of a conductive material that is impregnable to ink with a multitude of internal ink guide holes being formed along the longitudinal direction of said conductive member.
Claim 2
Dependent Claim
107 words
An ink dot printer wherein a recording electrode fed with ink at the fore end thereof and an opposed electrode are so positioned as to confront each other through a recording medium, and a picture formed on said recording medium with the ink sputtered thereto from the fore end of said recording electrode by generating an electric field between said recording electrode and opposed electrode, said ink dot printer characterized in that said recording electrode consist of a rod-shaped member of a conductive material that is impregnable to ink with a multitude of internal ink guide holes being formed along the longitudinal direction of said conductive member.
Claim 3
Dependent Claim
126 words
An ink dot printer wherein a recording electrode fed with ink at the fore end thereof and an opposed electrode are so positioned as to confront each other through a recording medium, and a picture is formed on said recording medium with the ink sputtered thereto from the fore end of said recording electrode by generating an electric field between said recording electrode and opposed electrode, said ink dot printer characterized in that said recording electrode consists of a rod-shaped member that is impregnable to ink wherein said rod-shaped member is composed of an insulating material and has a plurality of internal ink guide holes communicating with the two ends thereof, and a wire-shaped electrode element positioned longitudinally at the center of said ink guide member.
Claim 4
Dependent Claim
126 words
An ink dot printer wherein a recording electrode fed with ink at the fore end thereof and an opposed electrode are so positioned as to confront each other through a recording medium, and a picture is formed on said recording medium with the ink sputtered thereto from the fore end of said recording electrode by generating an electric field between said recording electrode and opposed electrode, said ink dot printer characterized in that said recording electrode consists of a rod-shaped member that is impregnable to ink wherein said rod-shaped member is composed of an insulating material and has a plurality of internal ink guide holes communicating with the two ends thereof, and a wire-shaped electrode element positioned longitudinally at the center of said ink guide member.
Claim 5
Dependent Claim
22 words
The ink dot printer as defined in claim 1, wherein the fore end of said recording electrode is shaped to be conical.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1992-09-18 | 1993-03-20 | 1993-09-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1996-09-18 | 1997-03-20 | 1997-09-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2000-09-18 | 2001-03-20 | 2001-09-19 | $7700.00 | Window Closed / Lapsed |