US5485178A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Printer control apparatus for synchronously controlling driving of recording head and transfer of data
Assignee: Canon Inc
•
Filing: 1993-11-23
•
Granted: 1996-01-16
•
Expires: 2013-11-23
Abstract
Abstract A control apparatus of a printer causes a recording head to form an image by a dot matrix while scanning the recording head in a predetermined direction relative to a recording medium. The control apparatus includes a transfer unit for transferring recording data stored in a memory to the recording head, a drive control unit for driving and controlling scanning of the recording head, and a synchronizing unit for synchronously driving the transfer unit and the drive control unit.
Inventors
- 👤 Jiro Tateyama
- 👤 Naohisa Suzuki
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 17:45
CPC Classifications
B; B41; B41J; B41J2/00; B41J2/005; B41J2/01; B41J2/015; B41J2/04; B41J2/045; B41J2/04501; B41J2/04541; B41J2/04543; B41J2/0458
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
131 words
A printer controller apparatus comprising: first memory means for storing inputted first data; first control means for processing the first data stored in said first memory means; second memory means for storing the first data processed by said first control means as second data; a recording head for recording data based on the second data stored in said second memory means; a carriage for mounting said recording head and moving in a direction normal to a paper feed direction; and second control means for controlling inputting of the first data into said first memory means, transferring of the second data from said second memory means to said recording head, and moving of said carriage, wherein said first and second control means execute their respective control operations in parallel with each other.
Claim 2
Dependent Claim
131 words
A printer controller apparatus comprising: first memory means for storing inputted first data; first control means for processing the first data stored in said first memory means; second memory means for storing the first data processed by said first control means as second data; a recording head for recording data based on the second data stored in said second memory means; a carriage for mounting said recording head and moving in a direction normal to a paper feed direction; and second control means for controlling inputting of the first data into said first memory means, transferring of the second data from said second memory means to said recording head, and moving of said carriage, wherein said first and second control means execute their respective control operations in parallel with each other.
Claim 3
Dependent Claim
23 words
An apparatus according to claim 1, wherein said recording head causes a volume change in ink through thermal energy to eject the ink.
Claim 4
Dependent Claim
23 words
An apparatus according to claim 1, wherein said first and second memory means comprise respective different storage areas of the same one memory.
Claim 5
Dependent Claim
20 words
An apparatus according to claim 1, wherein said second memory means stores a plurality of lines of the second data.
Claim 6
Dependent Claim
26 words
An apparatus according to claim 1, further comprising a keyboard for inputting the first data and a display for displaying data based on the input data.
Claim 7
Dependent Claim
29 words
An apparatus according to claim 1, wherein said second control means controls inputting of the first data into said first memory means from an external apparatus through an interface.
Claim 8
Dependent Claim
36 words
An apparatus according to claim 1, wherein said second control means controls the inputting of the first data, the transferring of the second data and the moving of said carriage in accordance with the same clock.
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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) | 1999-01-15 | 1999-07-17 | 2000-01-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2003-01-15 | 2003-07-17 | 2004-01-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2007-01-15 | 2007-07-17 | 2008-01-16 | $7700.00 | Window Closed / Lapsed |