US3920113A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Platen roll arrangement for typewheel printer
Assignee: Suwa Seikosha KK
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Filing: 1973-10-26
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Granted: 1975-11-18
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Expires: 1993-10-26
Abstract
Abstract A compact printer of the type having at least one print wheel, a carried paper web for receiving an imprint, and, for instance, an ink ribbon for imprinting a character of the print wheel on the paper web includes a print roller for impressing the ink ribbon and paper web selectively into the print wheel. The print roller comprises a press roller for pressing and rolling characters or the like circumferentially arranged on the print wheel, at a print position thereof, through the ink ribbon and paper web for forming an imprint thereon, a rotatable holder for the press roller which is rotatable on its own axis and has a recess therein for seating the press roller. The press roller includes a shaft which is journaled into the holder. The press roller has a radius which is longer than the difference between the journal radius of the holder and the distance between the axis of the holder and the corresponding axis of press roller.
Inventors
- 👤 Kazuto Tamai
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 09:09
CPC Classifications
B; B41; B41J; B41J7/00; B41J7/36; B41J7/46
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
181 words
In a compact printer of the type including at least one rotatable pattern carrier having a circumferential array of characters, numbers, symbols and the like arranged on the peripheral surface thereof, an imprint means for transmitting an imprint of a selected character of said pattern carrier on an imprint receiver, and an imprint receiver, a print means comprising a press roller for pressing and rolling characters or the like circumferentially arranged on said pattern carrier at a print position thereof against said imprint receiver, a rotatable holder for said press roller rotatable on its own axis and having a recess therein for seating said press roller, a shaft for said press roller, a pair of opposed recesses in the periphery of said holder in which opposed ends of said shaft are journaled, said press roller being freely accommodated in said recess therefor provided in said holder, said press roller having a radius which is longer than the difference between the journal radius of said holder and the distance between the axis of said holder and the axis of said press roller.
Claim 2
Dependent Claim
181 words
In a compact printer of the type including at least one rotatable pattern carrier having a circumferential array of characters, numbers, symbols and the like arranged on the peripheral surface thereof, an imprint means for transmitting an imprint of a selected character of said pattern carrier on an imprint receiver, and an imprint receiver, a print means comprising a press roller for pressing and rolling characters or the like circumferentially arranged on said pattern carrier at a print position thereof against said imprint receiver, a rotatable holder for said press roller rotatable on its own axis and having a recess therein for seating said press roller, a shaft for said press roller, a pair of opposed recesses in the periphery of said holder in which opposed ends of said shaft are journaled, said press roller being freely accommodated in said recess therefor provided in said holder, said press roller having a radius which is longer than the difference between the journal radius of said holder and the distance between the axis of said holder and the axis of said press roller.
Claim 3
Dependent Claim
46 words
The print means of claim 1 including a pair of annular rings for retaining opposed ends of said press roller shaft in said opposed recesses of said holder, and a pair of circumferentially arranged grooves in the periphery of said holder for seating said annular rings.
Claim 4
Dependent Claim
32 words
The print means of claim 2 wherein said press roller comprises an elastic member, a rotary shaft axialLy mounted through said elastic member and a tubular pressing member overlying said elastic member.
Claim 5
Dependent Claim
15 words
The print means of claim 3 including a tubular elastic member overlying said pressing member.
Claim 6
Dependent Claim
18 words
The print means of claim 3 wherein said pressing member is characterized as harder than said elastic member.
Claim 7
Dependent Claim
39 words
The print means of claim 2 wherein said press roller comprises a circumferentially ridged elastic cylindrical member, a rotary shaft axially mounted through said ridged elastic member and discrete annular pressing members overlying annular ridges of said elastic member.
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) | 1978-11-17 | 1979-05-19 | 1979-11-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-11-17 | 1983-05-19 | 1983-11-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-11-17 | 1987-05-19 | 1987-11-18 | $7700.00 | Window Closed / Lapsed |