US4886384A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Ribbon cassettes
Assignee: Francotyp Postalia GmbH
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Filing: 1988-07-20
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Granted: 1989-12-12
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Expires: 2008-07-20
Abstract
Abstract A ribbon cassette, such as in inked ribbon for a printing machine, has a supply spool and a take-up spool. An unwinding force is applied to the ribbon and the take-up spool is driven from the supply spool through a slip coupling. The configuration of the driving connection between the spools is such as to lead to a theoretical speed of the take-up spool which is always geater than is actually needed to match the speed of unwinding from the supply spool. Slip however occurs to match the speeds and to maintain tension in the ribbon.
Inventors
- 👤 Alan Harry
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 21:30
CPC Classifications
B; B41; B41J; B41J33/00; B41J33/14; B41J32/00; B41J35/00; B41J35/28; G; G07; G07B; G07B17/00; G07B17/00185; G07B17/00193; G07B2017/0025
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
97 words
A method of printing an article at a printing station using a thermal print head and a ribbon of thermally activatable dye, comprising the steps of: producing relative movement between the print head on the one hand and the article to be printed and the ribbon on the other hand, wherein adhesion between the article and the ribbon is created by local heating of the ribbon, and using said adhesion for driving the ribbon past the print head from a supply spool to a take-up spool, thereby ensuring synchronism of movement between the article and the ribbon.
Claim 2
Independent Claim
97 words
A method of printing an article at a printing station using a thermal print head and a ribbon of thermally activatable dye, comprising the steps of: producing relative movement between the print head on the one hand and the article to be printed and the ribbon on the other hand, wherein adhesion between the article and the ribbon is created by local heating of the ribbon, and using said adhesion for driving the ribbon past the print head from a supply spool to a take-up spool, thereby ensuring synchronism of movement between the article and the ribbon.
Claim 3
Dependent Claim
19 words
A method as claimed in claim 1, in which said supply and take-up spools are located in a cassette.
Claim 4
Dependent Claim
27 words
A method as claimed in claim 2, in which the cassette is stationary relative to the printing apparatus and the article is moved past the printing station.
Claim 5
Dependent Claim
36 words
A method as claimed in claim 1, in which said adhesion is subsequently removed by the further step of diverging the paths of the article and of the ribbon, thereby peeling away one from the other.
Claim 6
Dependent Claim
23 words
A method as claimed in claim 1, including the step of using said adhesion to drive said supply spool and said take-up spool.
References Cited (Backward Citations)
US3090299A
Cited
DE1176392B
Cited
US3455431A
Cited
US3759433A
Cited
US3762530A
Cited
US3967790A
Cited
DE2700812A1
Cited
US4151039A
Cited
FR2464146A1
Cited
US4544291A
Cited
US4496955A
Cited
US4467976A
Cited
US4528572A
Cited
US4577199A
Cited
US4591879A
Cited
US4568950A
Cited
US4705417A
Cited
US4739343A
Cited
JPH102372A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1992-12-11 | 1993-06-12 | 1993-12-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1996-12-11 | 1997-06-12 | 1997-12-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2000-12-11 | 2001-06-12 | 2001-12-12 | $7700.00 | Window Closed / Lapsed |