Patent US4410899A successfully refreshed from Google Patents.
US4410899A
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Method for forming liquid droplets
Assignee: Canon Inc
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Filing: 1981-03-27
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Granted: 1983-10-18
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Expires: 2001-03-27
Abstract
Abstract A liquid droplet is formed by producing and eliminating a bubble in a liquid in such a way that the liquid flow in the liquid conduit is not intercepted even when the bubble reaches the maximum volume.
Inventors
- 👤 Masahiro Haruta
- 👤 Yashuhiro Yano
- 👤 Yohji Matsufuji
- 👤 Tsuyoshi Eida
- 👤 Tokuya Ohta
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 15:30
CPC Classifications
B; B41; B41J; B41J2/00; B41J2/005; B41J2/01; B41J2/135; B41J2/14; B41J2/14016; B41J2/14088; B41J2/14112; B41J2/14129
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
84 words
A method for forming a liquid droplet, comprising: forming a bubble in a liquid in a fine conduit; and eliminating the bubble and ejecting a droplet of said liquid through an orifice communicating with the fine conduit by the pressure action which simultaneously results by the formation of the bubble, characterized by using as said liquid a liquid having the composition such that the liquid flow in the fine conduit is not intercepted by said bubble even when the bubble reaches its maximum volume.
Claim 2
Independent Claim
84 words
A method for forming a liquid droplet, comprising: forming a bubble in a liquid in a fine conduit; and eliminating the bubble and ejecting a droplet of said liquid through an orifice communicating with the fine conduit by the pressure action which simultaneously results by the formation of the bubble, characterized by using as said liquid a liquid having the composition such that the liquid flow in the fine conduit is not intercepted by said bubble even when the bubble reaches its maximum volume.
Claim 3
Dependent Claim
16 words
A method according to claim 1 in which the bubble is formed by heating the liquid.
Claim 4
Dependent Claim
19 words
A method according to claim 1 in which the bubble formed in the liquid is not discharged into atmosphere.
Claim 5
Dependent Claim
23 words
A method according to claim 1, furtther characterized by the step of supplying replacement liquid to the conduit upon ejection of the droplet.
Claim 6
Dependent Claim
49 words
A method for forming a liquid droplet according to claim 1, wherein said liquid includes: (A) A dye; and (B) A liquid carrier selected from the group consisting of methylcarbitol, ethylcellosolve, benzyl alcohol, methylpyrrolidone and diethylene glycol, said carrier being at least 30 parts by weight of said liquid.
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) | 1986-10-17 | 1987-04-18 | 1987-10-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1990-10-17 | 1991-04-18 | 1991-10-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1994-10-17 | 1995-04-18 | 1995-10-18 | $7700.00 | Window Closed / Lapsed |