Printhead having multiple print lines, and method and apparatus

Details Printhead having multiple print lines, and method and apparatus Printhead having multiple print lines, and method and apparatus

1993-11-22

1997-10-07

Le, N.

Incremental printing of symbolic information

Thermal marking apparatus or processes

Density control

347211, B41J 2355

Patent

active

056753705

ABSTRACT:
A printhead having multiple print lines of conventional design and a printhead control system for using the multiple print lines in a variety of operations. In one embodiment, the printhead control system prints an image by superimposing the printing from multiple print lines. In another embodiment, the image is printed by alternating the energization of one print line so that each print line is used to print only 1/3 of the image lines. As a result, the print lines are allowed a relatively long time to cool, thus allowing the printhead to be operated at a faster speed. In another embodiment, the printing elements of each print line print with a different image density, and images printed by superimposing the printing elements in the print lines with a variety of combinations depending upon the desired magnitude of the image density. In still another embodiment of the printhead control system, the resistance of each printing element is checked and, if found to be unacceptably high, corresponding printing elements of other print lines are used for printing.

REFERENCES:
patent: 3984844 (1976-10-01), Tanno et al.
patent: 4074109 (1978-02-01), Baraff et al.
patent: 4074280 (1978-02-01), Kojima et al.
patent: 4203025 (1980-05-01), Nakatani et al.
patent: 4251822 (1981-02-01), Hara et al.
patent: 4298786 (1981-11-01), Marciniec
patent: 4462704 (1984-07-01), Kurata et al.
patent: 4611217 (1986-09-01), Iizuka et al.
patent: 4683479 (1987-07-01), Horiya et al.
patent: 4782202 (1988-11-01), Sawae et al.
patent: 5233365 (1993-08-01), Ukmura
patent: 5343227 (1994-08-01), Hirosawa et al.

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