US4368476A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Ink jet recording head
Assignee: Canon Inc
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Filing: 1980-12-03
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Granted: 1983-01-11
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Expires: 2000-12-03
Abstract
Abstract An ink jet recording head of the type in which ink droplets are jetted from the orifice of the head toward a recording material to effect recording on the surface of the recording material with said ink droplets, said recording head characterized in that at least the area surrounding the jet orifice is treated with a compound of general formula: R.Si.X 3 wherein, R is a fluorine containing group selected from fluoroalkyl, fluoroaryl, fluorocycloalkyl, fluoroalkaryl and fluoroalkylaryl, each having 1 to 20 carbon atoms, and the ratio in number of fluorines: other elements in said fluorine containing group being not less than 1:1, and X is halogen, a hydrolyzable group selected from alkoxy, alkyl and acyloxy each having 1 to 5 carbon atoms, or hyroxyl.
Inventors
- 👤 Haruo Uehara
- 👤 Shigeyuki Matsumoto
- 👤 Yasushi Takatori
- 👤 Tokuya Ohta
- 👤 Yohji Matsufuji
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 08:39
CPC Classifications
B; B41; B41J; B41J2/00; B41J2/005; B41J2/01; B41J2/135; B41J2/16; B41J2/1606
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
122 words
An ink jet recording head of the type in which ink droplets are jetted from the jet orifice of the head toward a recording material to effect recording on the surface of the recording material with said ink droplets, with said recording head in at least the area surrounding the jet orifice treated with a compound of general formula: R.Si.X.sub.3 wherein, R is a fluorine containing group selected from fluoroalkyl, fluoroaryl, fluorocycloalkyl, fluoroalkaryl and fluoroalkylaryl, each having 1 to 20 carbon atoms, and the ratio in number of fluorines:other elements in said fluorine containing group being not less than 1:1; and X is halogen, a hydrolyzable group selected from alkoxy, alkyl and acyloxy each having 1 to 5 carbon atoms, or hydroxyl.
Claim 2
Dependent Claim
122 words
An ink jet recording head of the type in which ink droplets are jetted from the jet orifice of the head toward a recording material to effect recording on the surface of the recording material with said ink droplets, with said recording head in at least the area surrounding the jet orifice treated with a compound of general formula: R.Si.X.sub.3 wherein, R is a fluorine containing group selected from fluoroalkyl, fluoroaryl, fluorocycloalkyl, fluoroalkaryl and fluoroalkylaryl, each having 1 to 20 carbon atoms, and the ratio in number of fluorines:other elements in said fluorine containing group being not less than 1:1; and X is halogen, a hydrolyzable group selected from alkoxy, alkyl and acyloxy each having 1 to 5 carbon atoms, or hydroxyl.
Claim 3
Dependent Claim
43 words
An ink jet recording head according to claim 1 wherein the compound of general formula R.Si.X 3 is at least one compound selected from undecafluoropentyltrimethoxysilane, nonafluorobutyltrihydroxysilane, undecafluoropentyltripropoxysilane, tridecafluorohexyltrimethoxysilane, undecafluoropentyltriethoxysilane, perfluorododecyltrimethoxysilane, 1,1,2,2-tetrafluoroethyltrichlorosilane, tridecafluorohexyltriacetoxysilane, pentafluorophenyltrihydroxysilane, 2-hydrohexafluoropropyltrichlorosilane, 1,1,2,2-tetrafluoroethylmethyldichlorosilane, 4-hydrooctafluorobutyltrichlorosilane, pentafluorophenyldimethylchlorosilane, 2,2,3,3-tetrafluorocyclobutyltriacetoxysilane, heptafluoroisopropyltrimethoxysilane, heptafluorobenzyltriethoxysilane, p-trifluoromethyltetrafluorophenyltrimethoxysilane and tridecafluorohexyltriethoxysilane.
Claim 4
Dependent Claim
27 words
An ink jet recording head according to claim 1 wherein said compound of the general formula R.Si.X 3 forms a coating film layer on said head surface.
Claim 5
Dependent Claim
28 words
An ink jet recording head according to claim 3 wherein said coating layer has a film thickness in the range of from several 100 A to several 10μ.
Claim 6
Dependent Claim
24 words
An ink jet recording head according to claim 3 wherein said treated surface of the recording head is composed of glass, ceramics or metal.
References Cited (Backward Citations)
US3946398A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1986-01-10 | 1986-07-12 | 1987-01-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1990-01-10 | 1990-07-12 | 1991-01-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1994-01-10 | 1994-07-12 | 1995-01-11 | $7700.00 | Window Closed / Lapsed |