US4122460A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Ink jet nozzle structures
Assignee: International Business Machines Corp
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Filing: 1977-08-10
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Granted: 1978-10-24
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Expires: 1997-08-10
Abstract
Abstract The lifetime of multiple capillary nozzle assemblies embedded in a glass mass, of a multiple nozzle ink-jet printer, can be increased and the thermal and mechanical compatibility of the resulting package enhanced by fabrication of the nozzles from glass compositions comprised of SiO2, ZrO2, Na2O, K2O and MgO. Inclusion of ZrO2 as well as minor amounts of BaO, MgO, CaO, and Al2O3 enhances the alkali resistance of the glass nozzles. Also, the high SiO2 content of the glasses combined with the presence of ZrO2, MgO, CaO, and Al2O3 imparts an acid resistance to the nozzles.
Inventors
- 👤 James N. Humenik
- 👤 Jimmie L. Powell
- 👤 Rao R. Tummala
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 14:46
CPC Classifications
B; B41; B41J; B41J2/00; B41J2/005; B41J2/01; B41J2/135; B41J2/16; B41J2/1621; B41J2/1632; B41J2/162; B41J2/1623; C; C03; C03C; C03C3/00; C03C3/04; C03C3/076; C03C3/083; C03C3/085; C03C3/087; C03C3/089; C03C3/091; C03C4/00; C03C4/20
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
47 words
A multiple nozzle assembly for use in ink-jet printers comprising a plurality of coextending glass nozzles embedded in a glass mass, with the composition of said nozzles comprising, by weight 40-60%: SiO 2 12-20%: zrO 2 12-17%: na 2 O 0-2.3%: k 2 o and 0-6%: MgO
Claim 2
Dependent Claim
47 words
A multiple nozzle assembly for use in ink-jet printers comprising a plurality of coextending glass nozzles embedded in a glass mass, with the composition of said nozzles comprising, by weight 40-60%: SiO 2 12-20%: zrO 2 12-17%: na 2 O 0-2.3%: k 2 o and 0-6%: MgO
Claim 3
Dependent Claim
57 words
the nozzle assembly of claim 1 wherein said glass nozzle composition comprises, by weight, 42-52%: SiO 2 8.0-17.0%: zrO 2 6.0-14.0%: na 2 O 0-2.3%: k 2 o 0-6.0%: mgO, and including, by weight, 0-5%: B 2 O 3 4.0-6.0%: al 2 O 3 3.0-22.3%: baO 6.7-9.7%: caO 0-2.0%: li 2 O and 0-2.0%: Cu 2 O
Claim 4
Dependent Claim
83 words
The nozzle assembly of claim 2 wherein said glass nozzle composition comprises, by weight, about 42.5%: SiO 2 12%: zrO 2 10%:na 2 O 5.5%: al 2 O 3 23.3%: baO 6.7%: caO 4. the nozzle assembly of claim 2 wherein said glass nozzle composition comprises, by weight, about 42.5%: SiO 2 13.0%: zrO 2 10.0%: na 2 O 1.3%: k 2 o 3.0%: mgO 2.0%: b 2 o 3 5.5%: al 2 O 3 14.0%: baO 6.7%: caO 2.0%: cu 2 O
Claim 5
Dependent Claim
45 words
the nozzle assembly of Claim 2 wherein said glass nozzle composition comprises, by weight, about 42.5%: SiO 2 13.0%: zrO 2 10.0%: na 2 O 1.3%: k 2 o 4.0%: mgO 2.0%: b 2 o 3 5.5%: al 2 O 3 14.0%: baO 7.7%: caO
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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) | 1981-10-23 | 1982-04-24 | 1982-10-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1985-10-23 | 1986-04-24 | 1986-10-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1989-10-23 | 1990-04-24 | 1990-10-24 | $7700.00 | Window Closed / Lapsed |