US5430469A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Tone recording method using ink recording head
Assignee: Canon Inc
•
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 16:09
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.
References Cited (Backward Citations)
US4740796A
Cited
US4723129A
Cited
JPS5456847A
Cited
US4459600A
Cited
US4345262A
Cited
US4312005A
Cited
US4463359A
Cited
US4313124A
Cited
US4558333A
Cited
US4401991A
Cited
US4528576A
Cited
EP0104285A1
Cited
JPS59123670A
Cited
JPS59138461A
Cited
JPS6071260A
Cited
US4622561A
Cited
EP0172592A1
Cited
US4746935A
Cited
JPS63120660A
Cited
EP0300595A1
Cited
US4812859A
Cited
JPH024523A
Cited
EP0376596A2
Cited
US4963882A
Cited
US4963882B1
Cited
US4967203A
Cited
US4999646A
Cited
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 |