US5140429A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Ink-jet recording apparatus with mechanism for automatically regulating a recording head
Assignee: Canon Inc
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Filing: 1991-08-12
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Granted: 1992-08-18
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Expires: 2011-08-12
Abstract
Abstract An ink jet apparatus in which a recorded image is read to provide an image reference signal for comparison with an image recording signal, the resulting comparison being used as a basis for diagnosing an ink ejection state of a recording head nozzle in order to determine and implement an ink ejection recovery process.
Inventors
- 👤 Ryuichi Ebinuma
- 👤 Yuji Chiba
- 👤 Nobutoshi Mizusawa
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 16:05
CPC Classifications
B; B41; B41J; B41J2/00; B41J2/005; B41J2/01; B41J2/17; B41J2/19; B41J2/135; B41J2/165; B41J2/16579; B41J2202/00; B41J2202/01; B41J2202/12
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
106 words
An ink-jet recording apparatus comprising: discrimination means for controlling an ink-jet recording head so a to record an image based on a predetermined recording signal and for discriminating a state of the recorded image; determination means for determining a recovery condition for improving the recording condition of said ink-jet recording head according to said discrimination means, said determination means including a ROM for preliminarily storing a plurality of recovery conditions to be selected according to a discrimination result by said discrimination means; and recovery means acting on said ink-jet recording head to perform a recovery operation thereon based on a recovery condition output from the ROM.
Claim 2
Dependent Claim
106 words
An ink-jet recording apparatus comprising: discrimination means for controlling an ink-jet recording head so a to record an image based on a predetermined recording signal and for discriminating a state of the recorded image; determination means for determining a recovery condition for improving the recording condition of said ink-jet recording head according to said discrimination means, said determination means including a ROM for preliminarily storing a plurality of recovery conditions to be selected according to a discrimination result by said discrimination means; and recovery means acting on said ink-jet recording head to perform a recovery operation thereon based on a recovery condition output from the ROM.
Claim 3
Dependent Claim
29 words
An apparatus according to claim 1, wherein said recovery means has a plurality of different recovery mechanisms, and said ROM stores operation times for each of plural recovery mechanisms.
Claim 4
Dependent Claim
23 words
An apparatus according to claim 2, wherein said ink-jet recording head emits ink by generating a bubble according to thermal energy applied thereto.
Claim 5
Dependent Claim
23 words
An apparatus according to claim 1, wherein said ink-jet recording head emits ink by generating a bubble according to thermal energy applied thereto.
Claim 6
Dependent Claim
117 words
An ink-jet recording apparatus comprising: an ink-jet recording head for recording an image; a discrimination member for controlling said ink-jet recording head so as to record an image based on a predetermined recording signal and for discriminating a state of the recorded image; a determination member for determining a recovery condition for improving the recording condition of said ink-jet recording head according to said discrimination member, said determination member including a ROM for preliminarily storing a plurality of recovery conditions to be selected according to a discrimination result by said discrimination member; and a recovery member acting on said ink-jet recording head to perform a recovery operation thereon based on a recovery condition output from the ROM.
Claim 7
Dependent Claim
117 words
An ink-jet recording apparatus comprising: an ink-jet recording head for recording an image; a discrimination member for controlling said ink-jet recording head so as to record an image based on a predetermined recording signal and for discriminating a state of the recorded image; a determination member for determining a recovery condition for improving the recording condition of said ink-jet recording head according to said discrimination member, said determination member including a ROM for preliminarily storing a plurality of recovery conditions to be selected according to a discrimination result by said discrimination member; and a recovery member acting on said ink-jet recording head to perform a recovery operation thereon based on a recovery condition output from the ROM.
References Cited (Backward Citations)
EP0012821A2
Cited
US4241406A
Cited
EP0036787A1
Cited
US4551731A
Cited
WO1982001415A1
Cited
US4328504A
Cited
US4610202A
Cited
US4737801A
Cited
US4977459A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1995-08-18 | 1996-02-17 | 1996-08-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1999-08-18 | 2000-02-17 | 2000-08-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2003-08-18 | 2004-02-17 | 2004-08-18 | $7700.00 | Window Closed / Lapsed |