Patent US4690575A successfully refreshed from Google Patents.
US4690575A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Device for controlling printing pressure according to the kind of ink ribbon being used
Assignee: Canon Inc
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Filing: 1986-10-10
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Granted: 1987-09-01
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Expires: 2006-10-10
Abstract
Abstract A printer which operates to use selectively at least two different types of ink ribbons. The printer is characterized in that the printing pressure is varied in response to the selection of the type of ink ribbon.
Inventors
- 👤 Hiroyuki Ueda
- 👤 Yoshihiro Kobata
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 14:24
CPC Classifications
B; B41; B41J; B41J35/00; B41J35/20; B41J9/00; B41J9/44; B41J9/48
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
141 words
A printing device capable of printing with two types of ink ribbon, one of which is usable a plurality of times and the other of which is usable only once, said device comprising: print pressure information generating means responsive to a code representing a character to be printed for generating print pressure information that varies depending on the character; means for identifying the type of ink ribbon to be used for printing to determine whether the ink ribbon is usable a plurality of times or usable once; means for performing an arithemtic operation on said print pressure information, in accordance with the identification of the type of ink ribbon to be used for printing, to produce an arithmetic operation result; and print pressure providing means for providing a print pressure for printing the character in accordance with the arithmetic operation result.
Claim 2
Dependent Claim
141 words
A printing device capable of printing with two types of ink ribbon, one of which is usable a plurality of times and the other of which is usable only once, said device comprising: print pressure information generating means responsive to a code representing a character to be printed for generating print pressure information that varies depending on the character; means for identifying the type of ink ribbon to be used for printing to determine whether the ink ribbon is usable a plurality of times or usable once; means for performing an arithemtic operation on said print pressure information, in accordance with the identification of the type of ink ribbon to be used for printing, to produce an arithmetic operation result; and print pressure providing means for providing a print pressure for printing the character in accordance with the arithmetic operation result.
Claim 3
Dependent Claim
43 words
A printing device according to claim 1, wherein said print pressure providing means includes a programmable timer and the arithmetic operation result is provided to said programmable timer for generating a signal representing the print pressure in accordance with the arithemtic operation result.
Claim 4
Dependent Claim
26 words
A printing device according to claim 1, wherein said print pressure information generating means includes a table memory for storing a plurality of print pressure data.
Claim 5
Dependent Claim
142 words
A printing device capable of printing with two types of ink ribbon, one of which is usable a plurality of times and the other of which is usable only once, said device comprising: memory means for storing a code representing a character to be printed and print drive time information representing the print pressure for printing a corresponding character; means for identifying the type of ink ribbon as one usable a plurality of times or usable once for printing; generating means responsive to the identification of the type of ink ribbon for generating print pressure adjusting information; means for arithmetically processing the print drive time information stored in said memory means and the print pressure adjusting information generated by said generating means; and print pressure providing means for providing a print pressure for printing the character in accordance with the arithmetic processing.
Claim 6
Dependent Claim
142 words
A printing device capable of printing with two types of ink ribbon, one of which is usable a plurality of times and the other of which is usable only once, said device comprising: memory means for storing a code representing a character to be printed and print drive time information representing the print pressure for printing a corresponding character; means for identifying the type of ink ribbon as one usable a plurality of times or usable once for printing; generating means responsive to the identification of the type of ink ribbon for generating print pressure adjusting information; means for arithmetically processing the print drive time information stored in said memory means and the print pressure adjusting information generated by said generating means; and print pressure providing means for providing a print pressure for printing the character in accordance with the arithmetic processing.
Claim 7
Dependent Claim
18 words
A printing device comprising according to claim 4, wherein said print pressure providing means includes a programmable timer.
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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) | 1990-08-31 | 1991-03-02 | 1991-09-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1994-08-31 | 1995-03-02 | 1995-09-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1998-08-31 | 1999-03-02 | 1999-09-01 | $7700.00 | Window Closed / Lapsed |