US4569609A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Print ribbon comprising a frictional back layer
Assignee: CIT Group Business Credit Inc
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Filing: 1984-07-13
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Granted: 1986-02-11
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Expires: 2004-07-13
Abstract
Abstract A multi-strike (typewriter) ribbon comprising a web of synthetic resinous material having top and bottom surfaces with an ink coating on the top surface of the web and a back layer on the bottom surface of the web, the back layer providing a clean, frictional surface which provides good contact with the drive apparatus which drives the printing ribbon as it performs a printing function.
Inventors
- 👤 Donald E. Snyder, Jr.
- 👤 Donald J. Watters
- 👤 Frank M. Palermiti
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 20:26
CPC Classifications
B; B41; B41J; B41J31/00; B41J31/05
Claims Analysis
Total Claims: 18
Claim 1
Independent Claim
77 words
A printing ribbon comprising a web of synthetic resinous material having top and bottom surfaces; a printing coating of ink-bearing material on said top surface of said web; and a back layer on said bottom surface of said web; said back layer including filler material which produces a rough, frictional outer surface which (1) provides frictional engagement with the drive apparatus for the ribbon and (2) can adsorb oil which might be exuded from said printing coating.
Claim 2
Dependent Claim
77 words
A printing ribbon comprising a web of synthetic resinous material having top and bottom surfaces; a printing coating of ink-bearing material on said top surface of said web; and a back layer on said bottom surface of said web; said back layer including filler material which produces a rough, frictional outer surface which (1) provides frictional engagement with the drive apparatus for the ribbon and (2) can adsorb oil which might be exuded from said printing coating.
Claim 3
Dependent Claim
88 words
A printing ribbon comprising a web of synthetic resinous material having top and bottom surfaces; a printing coating of ink-bearing material on said top surface of said web; and a back layer on said bottom surface of said web; said back layer comprising a resin in which is dispersed a filler material which produces a rough, frictional outer surface which (1) provides frictional engagement of the back layer with the drive apparatus for the ribbon and (2) can adsorb oil which might be exuded from said printing coating.
Claim 4
Dependent Claim
88 words
A printing ribbon comprising a web of synthetic resinous material having top and bottom surfaces; a printing coating of ink-bearing material on said top surface of said web; and a back layer on said bottom surface of said web; said back layer comprising a resin in which is dispersed a filler material which produces a rough, frictional outer surface which (1) provides frictional engagement of the back layer with the drive apparatus for the ribbon and (2) can adsorb oil which might be exuded from said printing coating.
Claim 5
Dependent Claim
77 words
A printing ribbon comprising a web of synthetic resinous material having top and bottom surfaces; a printing coating of ink-bearing material on said top surface of said web; and a back layer on said bottom surface of said web; said back layer providing a clean, frictional surface which provides good contact with drive apparatus which drives the printing ribbon as it performs a printing function; said back layer including one or more resins and a silica-bearing filler.
Claim 6
Dependent Claim
77 words
A printing ribbon comprising a web of synthetic resinous material having top and bottom surfaces; a printing coating of ink-bearing material on said top surface of said web; and a back layer on said bottom surface of said web; said back layer providing a clean, frictional surface which provides good contact with drive apparatus which drives the printing ribbon as it performs a printing function; said back layer including one or more resins and a silica-bearing filler.
Claim 7
Dependent Claim
29 words
The ribbon defined in claim 3 wherein said back layer includes one or more substances which can adsorb oil that may enter said back layer from said printing coating.
Claim 8
Dependent Claim
13 words
The ribbon defined in claim 3 wherein said back layer includes a resin.
Claim 9
Dependent Claim
17 words
The ribbon defined in claim 3 wherein said back layer includes a polyester or vinyl chloride resin.
Claim 10
Dependent Claim
14 words
The ribbon defined in claim 3 wherein said back layer includes a polyurethane resin.
Claim 11
Dependent Claim
20 words
The ribbon defined in claim 3 wherein said back layer includes a resin which comprises a terpolymer of vinyl chloride.
Claim 12
Dependent Claim
28 words
The ribbon defined in claim 3 wherein said back layer is prepared from a mixture including resin materials dissolved in methyl ethyl ketone and including a silica-bearing filler.
Claim 13
Dependent Claim
19 words
The ribbon defined in claim 9 wherein said resin material includes a polyurethane resin and a vinyl chloride resin.
Claim 14
Dependent Claim
23 words
The ribbon defined in claim 9 wherein said resin material includes a polyurethane resin and a vinyl chloride resin in substantially equal percentages.
Claim 15
Dependent Claim
32 words
The ribbon defined in claim 9 wherein said resin material includes a polyurethane resin and a vinyl chloride resin in substantially equal percentages in the range of about 3% to about 15%.
Claim 16
Dependent Claim
14 words
The ribbon defined in claim 3 wherein said printing layer includes an oil-adsorbing material.
Claim 17
Dependent Claim
14 words
The ribbon defined in claim 13 wherein said oil-adsorbing material is a diatomaceous earth.
Claim 18
Dependent Claim
14 words
The ribbon defined in claim 13 wherein said oil-adsorbing material is a silica-type material.
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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) | 1989-02-10 | 1989-08-12 | 1990-02-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1993-02-10 | 1993-08-12 | 1994-02-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1997-02-10 | 1997-08-12 | 1998-02-11 | $7700.00 | Window Closed / Lapsed |