US5189284A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Resistor, process for producing the same, and thermal head using the same
Assignee: Fujifilm Business Innovation Corp
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Filing: 1989-02-27
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Granted: 1993-02-23
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Expires: 2009-02-27
Abstract
Abstract A resistor comprises iridium and at least one metal selected from the group consisting of silicon, bismuth, lead, tin, aluminum, boron, titanium, zirconium, calcium and barium. A process for producing the resistor comprises the steps of coating a solution of an iridium containing organometallic material onto a substrate and subsequently firing the coated solution. The resistor is used as a heating resistor of a thermal head.
Inventors
- 👤 Kumiko Takahashi
- 👤 Kazuo Baba
- 👤 Yoshiyuki Shiratsuki
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 08:42
CPC Classifications
B; B41; B41J; B41J2/00; B41J2/315; B41J2/32; B41J2/335; B41J2/33505; B41J2/33515; B41J2/33545; B41J2/3355; B41J2/33555; B41J2/3357; B41J2/3359; G; G01; G01D; G01D15/00; G01D15/10; H; H01; H01C; H01C17/00; H01C17/06; H01C17/065; H01C17/06506; H01C17/06513; H01C17/06533; H01C17/0654; H05; H05B; H05B3/00; H05B3/10; H05B3/12; H05B3/14; H05B3/141
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
33 words
A process for producing a resistor, comprising: (a) coating a substrate with a solution of an iridium-containing organometallic compound in a solvent; and (b) firing the resulting coated substrate to form said resistor.
Claim 2
Dependent Claim
33 words
A process for producing a resistor, comprising: (a) coating a substrate with a solution of an iridium-containing organometallic compound in a solvent; and (b) firing the resulting coated substrate to form said resistor.
Claim 3
Dependent Claim
38 words
The process of claim 1, wherein said solution further contains at least one other organometallic compound containing a metal selected from the group consisting of silicon, bismuth, lead, tin, aluminum, boron, titanium, zirconium, calcium, barium and mixtures thereof.
Claim 4
Dependent Claim
40 words
The process of claim 2, wherein the atomic ratio of the number of atoms of metal in said other organometallic compound to the number of iridium atoms in said iridium-containing organometallic compound is in the range of 0.5 to 2.7.
Claim 5
Dependent Claim
19 words
The process of claim 1, wherein said firing is conducted at a peak temperature not lower than 500° C.
Claim 6
Dependent Claim
10 words
A resistor made according to the process of claim 1.
Claim 7
Dependent Claim
95 words
A thermal head comprising an alumina substrate, an underglaze layer formed on said substrate, a counter electrode formed on a first portion of said underglaze layer, a common electrode formed on a second portion of said underglaze layer, a heating resistor formed on said underglaze layer between said electrodes and an overglaze layer formed on at least said resistor, wherein said resistor is formed by coating said substrate with a solution of an iridium-containing organometallic compound in a solvent and subsequently firing the resulting coated substrate at a temperature of not lower than 500° C.
Claim 8
Dependent Claim
95 words
A thermal head comprising an alumina substrate, an underglaze layer formed on said substrate, a counter electrode formed on a first portion of said underglaze layer, a common electrode formed on a second portion of said underglaze layer, a heating resistor formed on said underglaze layer between said electrodes and an overglaze layer formed on at least said resistor, wherein said resistor is formed by coating said substrate with a solution of an iridium-containing organometallic compound in a solvent and subsequently firing the resulting coated substrate at a temperature of not lower than 500° C.
Claim 9
Dependent Claim
39 words
The thermal head of claim 6, wherein said solution further contains at least one other organometallic compound containing a metal selected from the group consisting of silicon, bismuth, lead, tin, aluminum, boron, titanium, zirconium, calcium, barium and mixtures thereof.
Claim 10
Dependent Claim
41 words
The thermal head of claim 7, wherein the atomic ratio of the number of atoms of metal in said other organometallic compound to the number of iridium atoms in said iridium-containing organometallic compounds is in the range of 0.5 to 2.7.
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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) | 1996-02-23 | 1996-08-24 | 1997-02-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2000-02-23 | 2000-08-24 | 2001-02-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2004-02-23 | 2004-08-24 | 2005-02-23 | $7700.00 | Window Closed / Lapsed |