US4643948A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Coatings for ink jet nozzles
Assignee: IBM Information Products Corp
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Filing: 1985-03-22
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Granted: 1987-02-17
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Expires: 2005-03-22
Abstract
Abstract An ink jet nozzle plate is coated with a film comprising a partially fluorinated alkyl silane and a perfluorinated alkane.
Inventors
- 👤 Arthur F. Diaz
- 👤 Richard A. Hernandez
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 08:37
CPC Classifications
C; C23; C23C; C23C16/00; C23C16/22; C09; C09D; C09D4/00; Y; Y10; Y10T; Y10T428/00; Y10T428/31504; Y10T428/3154; Y10T428/31544; Y10T428/31652; Y10T428/31663; Y10T428/31667; Y10T428/31678; Y10T428/31692; Y10T428/31699
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
101 words
An ink jet nozzle plate characterized by having a coating of a film which comprises: a partially fluorinated alkyl silane and a perfluorinated alkane, with the silane compound being distributed within the coating at a very high concentration in that portion of the coating which touches the plate and at a lower concentration in that portion of the coating away from the plate, and the alkane compound being distributed in the coating at a low concentration in that portion of the coating which touches the plate and at a high concentration in that portion of the coating away from the plate.
Claim 2
Dependent Claim
101 words
An ink jet nozzle plate characterized by having a coating of a film which comprises: a partially fluorinated alkyl silane and a perfluorinated alkane, with the silane compound being distributed within the coating at a very high concentration in that portion of the coating which touches the plate and at a lower concentration in that portion of the coating away from the plate, and the alkane compound being distributed in the coating at a low concentration in that portion of the coating which touches the plate and at a high concentration in that portion of the coating away from the plate.
Claim 3
Dependent Claim
20 words
A nozzle plate as claimed in claim 1 wherein there is an epitaxial gradation in the composition of the film.
Claim 4
Dependent Claim
39 words
A nozzle plate as claimed in claim 1 in which the silane compound is present as a separate layer next to the plate, and the alkane compound is present as a separate layer on top of the silane layer.
Claim 5
Dependent Claim
16 words
A nozzle plate as claimed in claim 1 wherein the partially fluorinated alkyl silane is trifluoropropylmethyldimethoxysilane.
Claim 6
Dependent Claim
14 words
A nozzle plate as claimed in claim 1 wherein the perfluorinated alkane is perfluoropropane.
Claim 7
Dependent Claim
20 words
A nozzle plate as claimed in claim 1 wherein the coating has been deposited by radio frequency (RF) glow discharge.
References Cited (Backward Citations)
US3859320A
Cited
US4252848A
Cited
US4091166A
Cited
US4125152A
Cited
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Cited
US4391843A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1990-02-16 | 1990-08-18 | 1991-02-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1994-02-16 | 1994-08-18 | 1995-02-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1998-02-16 | 1998-08-18 | 1999-02-17 | $7700.00 | Window Closed / Lapsed |