US4281331A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Variable rate ink jet printing
Assignee: Dennison Manufacturing Co
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Filing: 1980-01-24
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Granted: 1981-07-28
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Expires: 2000-01-24
Abstract
Abstract A method of simulating variable rate printing in an ink jet printing system employing a fixed frequency vibrating reed. By varying several printing parameters, a range of quantized values is derived for character size and the rate of character generation.
Inventors
- 👤 Irwin Shair
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 01:46
CPC Classifications
G; G01; G01D; G01D15/00; G01D15/16; G01D15/18; B; B41; B41J; B41J2/00; B41J2/005; B41J2/01; B41J2/21; B41J2/2121; B41J2/2128; B41J2/17; B41J2/18; B41J2/185
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
85 words
The method of variable rate ink jet printing of characters with a fixed frequency of nozzle oscillation which comprises the steps of a. providing a two dimensional printing matrix of appropriate dimensions, in which the first dimension is a number of scanning cycles and the second is a number of discrete character elements per scanning cycle, b. selectively skipping scanning cycles in printing and c. establishing a number of scanning cycles for space between characters, in order to approximate desired values of characters per second.
Claim 2
Independent Claim
85 words
The method of variable rate ink jet printing of characters with a fixed frequency of nozzle oscillation which comprises the steps of a. providing a two dimensional printing matrix of appropriate dimensions, in which the first dimension is a number of scanning cycles and the second is a number of discrete character elements per scanning cycle, b. selectively skipping scanning cycles in printing and c. establishing a number of scanning cycles for space between characters, in order to approximate desired values of characters per second.
Claim 3
Dependent Claim
33 words
The ink jet printing method as defined in claim 1 further comprising the provision of a speed of advance for a record member in order to approximate desired values of characters per inch.
Claim 4
Dependent Claim
32 words
The ink jet printing method as defined in claim 1 wherein said printing matrix is provided from a set of matrices with dimensions of 5×7, 7×9, . . . , 2N+1×2N +3.
Claim 5
Dependent Claim
28 words
The ink jet printing method as defined in claim 1 wherein the number of spaces between characters may be varied within a range defined by image quality tolerances.
Claim 6
Dependent Claim
28 words
The ink jet printing method as defined in claim 4 wherein the limit on space variation depends on the printing matrix provided and on the cycle skipping selected.
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) | 1984-07-27 | 1985-01-26 | 1985-07-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1988-07-27 | 1989-01-26 | 1989-07-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1992-07-27 | 1993-01-26 | 1993-07-28 | $7700.00 | Window Closed / Lapsed |