US4675693A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Liquid injection recording method in which the liquid droplet volume has a predetermined relationship to the area of the liquid discharge port
Assignee: Canon Inc
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Filing: 1985-12-10
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Granted: 1987-06-23
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Expires: 2005-12-10
Abstract
Abstract In a liquid injection recording method, recording is effected in such a manner that the relation between the minimum cross-sectional area So of droplet discharge ports for forming flying droplets and the volume V of the droplets discharged from the droplet discharge ports is 100≧V/So 3/2 ≧0.1. Also, in a liquid injection recording apparatus, the relation that 0.1.S H ≦So 3/2 ≦100.S H is satisfied between the numerical value of the minimum cross-sectional area So of a discharge orifice for forming flying droplets and the numerical value of the heater area S H of an electro-heat converting member for providing energy for causing liquid to be discharged from the discharge orifice.
Inventors
- 👤 Yasuhiro Yano
- 👤 Masahiro Haruta
- 👤 Toshitami Hara
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 04:21
CPC Classifications
B; B41; B41J; B41J2/00; B41J2/005; B41J2/01; B41J2/135; B41J2/14; B41J2/1433; B41J2/14016; B41J2/14088; B41J2/14112; B41J2/14129; B41J2002/14387
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
71 words
A liquid injection recording method comprising: providing a liquid having a surface tension and viscosity of 25-60 dyne/cm and 1-20 cp, respectively; effecting recording by providing flying droplets of said liquid in such a manner that the relation between the minimum cross-sectional area So of droplet discharge ports for forming said flying droplets and the volume V of said flying droplets discharged from said droplet discharge ports is 100≧V/So 3/2 ≧0.1.
Claim 2
Dependent Claim
71 words
A liquid injection recording method comprising: providing a liquid having a surface tension and viscosity of 25-60 dyne/cm and 1-20 cp, respectively; effecting recording by providing flying droplets of said liquid in such a manner that the relation between the minimum cross-sectional area So of droplet discharge ports for forming said flying droplets and the volume V of said flying droplets discharged from said droplet discharge ports is 100≧V/So 3/2 ≧0.1.
References Cited (Backward Citations)
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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) | 1990-06-22 | 1990-12-22 | 1991-06-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1994-06-22 | 1994-12-22 | 1995-06-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1998-06-22 | 1998-12-22 | 1999-06-23 | $7700.00 | Window Closed / Lapsed |