Patent US4392318A successfully refreshed from Google Patents.
Patent US3781983A successfully refreshed from Google Patents.
US3781983A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of making printing head for thermal printer
Assignee: Ricoh Co Ltd
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Filing: 1972-08-14
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Granted: 1974-01-01
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Expires: 1992-08-14
Abstract
Abstract A plurality of heating resistors and their lead wires are formed upon a heat-resistive flexible film, and the flexible film is then curved and mounted upon a head structure in such a manner that the heating resistors are arrayed along a projecting edge of the head structure.
Inventors
- 👤 K Hiruma
- 👤 I Sugaya
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 09:24
CPC Classifications
B; B41; B41J; B41J2/00; B41J2/315; B41J2/32; B41J2/345; Y; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/49002; Y10T29/49082; Y10T29/49083
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
72 words
A method of manufacturing printing heads for a thermal printer comprising the steps of a. forming upon a heat-resistive flexible film support a plurality of heating resistors and a plurality of lead wires respectively connected to said resistors; b. curving or bowing said flexible film support; and c. mounting said flexible film support on a head structure in such a manner that only said heating resistors are projected along said head structure.
Claim 2
Independent Claim
72 words
A method of manufacturing printing heads for a thermal printer comprising the steps of a. forming upon a heat-resistive flexible film support a plurality of heating resistors and a plurality of lead wires respectively connected to said resistors; b. curving or bowing said flexible film support; and c. mounting said flexible film support on a head structure in such a manner that only said heating resistors are projected along said head structure.
Claim 3
Dependent Claim
98 words
In a method of manufacturing a printing head for a thermal printing device, the steps of a. establishing a row of heating resistors and a plurality of leads respectively connected to said resistors on a surface of a flexible film member, and b. mounting the flexible film member on a head structure having a projecting edge portion, the mounting step including bending the film member around said edge portion with said row of resistors exposed and coincident with the vertex of the bend so as to be positionable in simultaneous contact with a surface of a recording medium.
Claim 4
Dependent Claim
98 words
In a method of manufacturing a printing head for a thermal printing device, the steps of a. establishing a row of heating resistors and a plurality of leads respectively connected to said resistors on a surface of a flexible film member, and b. mounting the flexible film member on a head structure having a projecting edge portion, the mounting step including bending the film member around said edge portion with said row of resistors exposed and coincident with the vertex of the bend so as to be positionable in simultaneous contact with a surface of a recording medium.
Claim 5
Dependent Claim
25 words
A method according to claim 2, wherein said heating resistors and said leads are thin metallic films adherent to the surface of said film member.
Claim 6
Dependent Claim
31 words
A method according to claim 3, wherein the step of establishing the resistors and leads on the film member surface comprises depositing thin metallic films on the surface by vacuum evaporation.
Claim 7
Dependent Claim
30 words
A method according to claim 3, wherein the step of establishing the resistors and leads on the film member surface comprises depositing thin metallic films on the surface by photoetching.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-12-31 | 1977-07-02 | 1978-01-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-12-31 | 1981-07-02 | 1982-01-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-12-31 | 1985-07-02 | 1986-01-01 | $7700.00 | Window Closed / Lapsed |