US4701593A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Thermal head
Assignee: Canon Inc
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Filing: 1986-05-12
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Granted: 1987-10-20
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Expires: 2006-05-12
Abstract
Abstract A thermal head includes electrodes, a heat generating member connected to the electrodes and a heat generating member support having bevelled edges. The thermal head is manufactured by preparing the substrate having the heat generating members and the electrodes fixed thereon, forming grooves along cut lines of the substrate such that bevels are formed at edges of individual elements when the substrate is cut into the individual elements along the cut lines, and cutting the substrate along the cut lines.
Inventors
- 👤 Soichi Hiramatsu
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 02:16
CPC Classifications
B; B41; B41J; B41J2/00; B41J2/315; B41J2/32; B41J2/335; B41J2/33555; B41J2/3357; B41J2/3359
Claims Analysis
Total Claims: 17
Claim 1
Independent Claim
55 words
A thermal head blank comprising; electrode means; heat generating means connected to said electrode means; and a plurality of rectangular support means for supporting said heat generating means, wherein edges of saisd support means are beveled and grooved to provide a plurality of thermal heads with beveled edges by severing the blank at said grooves.
Claim 2
Dependent Claim
55 words
A thermal head blank comprising; electrode means; heat generating means connected to said electrode means; and a plurality of rectangular support means for supporting said heat generating means, wherein edges of saisd support means are beveled and grooved to provide a plurality of thermal heads with beveled edges by severing the blank at said grooves.
Claim 3
Dependent Claim
23 words
A thermal head blank according to claim 1, wherein said beveled edges are normal to a direction of movement of said thermal head.
Claim 4
Dependent Claim
14 words
A thermal head blank according to claim 1, wherein said support means is ceramic.
Claim 5
Dependent Claim
17 words
A thermal head blank according to claim 1, wherein the surfaces of said beveled edges are planar.
Claim 6
Dependent Claim
17 words
A thermal head blank according to claim 1, wherein the surfaces of said beveled edges are curved.
Claim 7
Dependent Claim
78 words
A thermal head comprising: heat generating means; electrode means connected to said heat generating means; first support means for supporting said heat generating means and said electrode means; and second support means having a recess deeper than a height of said first support means, wherein said first support means is received in said recess, the depth of which is dimensioned so that said heat generating means protrudes from said second support means for contact with a record paper.
Claim 8
Dependent Claim
78 words
A thermal head comprising: heat generating means; electrode means connected to said heat generating means; first support means for supporting said heat generating means and said electrode means; and second support means having a recess deeper than a height of said first support means, wherein said first support means is received in said recess, the depth of which is dimensioned so that said heat generating means protrudes from said second support means for contact with a record paper.
Claim 9
Dependent Claim
14 words
A thermal head according to claim 6, wherein said first support means is ceramic.
Claim 10
Dependent Claim
27 words
A thermal head according to claim 6, wherein a side of said first support means for supporting said heat generating means and said electrode means is beveled.
Claim 11
Dependent Claim
16 words
A thermal head according to claim 8, wherein the surface of saids beveled edge is planar.
Claim 12
Dependent Claim
16 words
A thermal head according to claim 8, wherein the surface of said beveled edge is curved.
Claim 13
Dependent Claim
15 words
A thermal head according to claim 6, wherein said second support means has beveled edges.
Claim 14
Dependent Claim
63 words
A thermal head blank comprising; electrode means; heat genenrating means connected to said electrode means; and a plurality of rectangular support means for supporting said heat generating means, wherein edges of said support means have a radius of curvature and are grooved to provide a plurality of thermal heads with curved surfaces at the edges thereof by severing the blank at said grooves.
Claim 15
Dependent Claim
63 words
A thermal head blank comprising; electrode means; heat genenrating means connected to said electrode means; and a plurality of rectangular support means for supporting said heat generating means, wherein edges of said support means have a radius of curvature and are grooved to provide a plurality of thermal heads with curved surfaces at the edges thereof by severing the blank at said grooves.
Claim 16
Dependent Claim
52 words
A thermal head blank according to claim 12, wherein said radius of curvature on said edges of said support means is normal to a direction of movement of said thermal head and forms a cylindrical wall having a center axis located closer to said support means than to said heat generating means.
Claim 17
Dependent Claim
14 words
A thermal head blank according to claim 12, wherein said support means is ceramic.
References Cited (Backward Citations)
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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) | 1990-10-19 | 1991-04-20 | 1991-10-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1994-10-19 | 1995-04-20 | 1995-10-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1998-10-19 | 1999-04-20 | 1999-10-20 | $7700.00 | Window Closed / Lapsed |