EP0073474A2
Expired / Lapsed
EP
⏱️ 0.0 years remaining
Ink ribbon cartridge
Assignee: Bridgestone Corp
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Filing: 1982-08-25
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Granted: —
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Expires: 2002-08-25
Abstract
Abstract An ink ribbon cartridge comprises a cartridge housing (1), an endless length of ink ribbon (7) received in the housing (1), and a take-up roller (8) and a pinch roller (9) for transporting the ribbon (7) and guiding it in a repetitively folded manner. At least one of said take-up and pinch rollers (8, 9) consists of a compressed body of flexible or semi-rigid polyurethane foam. The use of compressed flexible or semi-rigid polyurethane foam results in improved rollers which have the good ribbon driving performance and driving stability.
Inventors
- 👤 Shigeru Iwasawa
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-11-02 12:08
CPC Classifications
B; B41; B41J; B41J32/00; B41J32/02; B41J33/00; B41J33/02; B41J33/10
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
62 words
An ink ribbon cartridge comprising a cartridge housing, an endless length of ink ribbon received in the housing, and a take-up roller and a pinch roller for transporting the ribbon and guiding the ribbon in a repetitively folded manner, characterized in that at least one of said take-up and pinch rollers(8,9) consists of a compressed body of flexible or semi-rigid polyurethane foam.
Claim 2
Dependent Claim
62 words
An ink ribbon cartridge comprising a cartridge housing, an endless length of ink ribbon received in the housing, and a take-up roller and a pinch roller for transporting the ribbon and guiding the ribbon in a repetitively folded manner, characterized in that at least one of said take-up and pinch rollers(8,9) consists of a compressed body of flexible or semi-rigid polyurethane foam.
Claim 3
Dependent Claim
29 words
Ribbon cartridge as defined in claim 1, characterized in that each of said take-up and pinch rollers (8,9) consists of a compressed body of flexible or semi-rigid polyurethane foam.
Claim 4
Dependent Claim
28 words
Ribbon cartridge as defined in claim 1 or 2, characterized in that said compressed body is made of flexible polyurethane foam having a cell membrane-free three-dimensional reticulated structure.
Claim 5
Dependent Claim
42 words
Ribbon cartridge as defined in claim 1 or 2, characterized in that said compressed body is prepared by compressing a flexible or semi-rigid polyurethane foam having 40 to 90 cells per inch under heat at a compression ratio of 75% to 95%.
Claim 6
Dependent Claim
27 words
Ribbon cartridge as defined in claim 1 or 2, characterized in that said compressed body has a density of 0.15g/cm 3 to 0 .65 g/cm 3 .
Claim 7
Dependent Claim
24 words
Ribbon cartridge as defind in claim 1 or 2, characterized in that said compressed body has a Shore A hardness of 10 to 60.
Claim 8
Dependent Claim
19 words
Ribbon cartridge as defined in claim 1 or 2, characterized in that said compressed body is impregnated with ink.
Claim 9
Dependent Claim
26 words
Ribbon cartridge as defined in claim 1 or 2, characterized in that each of said take-up and pinch rollers (8,9) is indented on the circumferential surface.
Claim 10
Dependent Claim
34 words
Ribbon cartridge as defined in claim 1 or 2, characterized in that the direction of compression of said compressed body of flexible or semi-rigid polyurethanefoam is aligned with the axis of the roller (8,9).
References Cited (Backward Citations)
No citation records indexed.
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