Patent US5430469A successfully refreshed from Google Patents.
US5430469A
Expired / Lapsed
US
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Tone recording method using ink recording head
Assignee: Canon Inc
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Filing: 1992-06-03
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Granted: 1995-07-04
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Expires: 2012-06-03
Abstract
Abstract A liquid jet recording method of recording on a recording material with liquid droplets discharged trough plural scanning nozzles, in which: n/(s/p)≧2 n/(s/p)×k=g-1 are satisfied, where n (n≧2) is a number of the nozzles arranged at pitch P (μm); s (μm) is a distance of relative movement between the nozzles and the recording material between adjacent scans; k (k≧1) is a maximum number of ink droplets per pixel and per scan; g (g≧3) is a number of tone levels.
Inventors
- 👤 Makoto Shioya
- 👤 Yasuyuki Tamura
- 👤 Hiroto Takahashi
- 👤 Masayoshi Tachihara
- 👤 Tadashi Yamamoto
- 👤 Genji Inada
- 👤 Tatsuo Kimura
- 👤 Jun Ashiwa
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 18:49
CPC Classifications
B; B41; B41J; B41J2/00; B41J2/005; B41J2/01; B41J2/205; B41J2/2054; B41J19/00; B41J19/16; B41J2/21; B41J2/2132; G; G06; G06K; G06K15/00; G06K15/02; G06K15/10; G06K15/102; G06K15/105; H; H04; H04N; H04N1/00; H04N1/40; H04N1/40025; H04N1/40031; G06K2215/00; G06K2215/0082; G06K2215/0094
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
98 words
A liquid jet recording method of recording on a recording material with liquid droplets discharged through plural scanning nozzles, comprising the steps of: providing n nozzles arranged at a pitch p (μm), wherein n≧2, said nozzles ejecting droplets of substantially equal volume and of the same color; and effecting recording by ejecting droplets with g tone levels where g≧3, s (μm) is a distance of relative movement between the nozzles and the recording material between adjacent scans, and k (k≧1) is a maximum number of ink droplets per pixel and per scan, so as to satisfy: n/(s/p)≧2 n/(s/p)×k=g-1.
Claim 2
Dependent Claim
98 words
A liquid jet recording method of recording on a recording material with liquid droplets discharged through plural scanning nozzles, comprising the steps of: providing n nozzles arranged at a pitch p (μm), wherein n≧2, said nozzles ejecting droplets of substantially equal volume and of the same color; and effecting recording by ejecting droplets with g tone levels where g≧3, s (μm) is a distance of relative movement between the nozzles and the recording material between adjacent scans, and k (k≧1) is a maximum number of ink droplets per pixel and per scan, so as to satisfy: n/(s/p)≧2 n/(s/p)×k=g-1.
Claim 3
Dependent Claim
31 words
A method according to claim 1, wherein in each of the nozzles, thermal energy is used to cause a state change in the liquid to discharge the liquid through the nozzle.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1998-07-03 | 1999-01-02 | 1999-07-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2002-07-03 | 2003-01-02 | 2003-07-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2006-07-03 | 2007-01-02 | 2007-07-04 | $7700.00 | Window Closed / Lapsed |