Print pulse controller for a termal printhead

Details Print pulse controller for a termal printhead Print pulse controller for a termal printhead

1984-04-02

1987-05-05

Williams, Archie E.

Boots, shoes, and leggings

400120, 364518, 346 76PH, 219216, G06F 312

Patent

active

046637346

ABSTRACT:
A thermal print pulse controller and data shifter accomplishes control of a thermal print pulse by altering the pulse width of the print pulse according to the printing history. Data is obtained from the printhead and recirculated for logical operation with previous records back to the printhead during predetermined phases of the print pulse. As a result of the logical comparison a decision is made to continue or discontinue printing of a dot and thus prevent overheating the printing element.

REFERENCES:
patent: 4510505 (1985-04-01), Fukui
patent: 4514738 (1985-04-01), Nagato et al.
patent: 4524368 (1985-06-01), Inui et al.
patent: 4536774 (1985-08-01), Inui et al.
patent: 4539571 (1985-09-01), Suzuki
patent: 4543588 (1985-09-01), Fukui
patent: 4556891 (1985-12-01), Matsushita et al.
patent: 4560993 (1985-12-01), Hakoyama
patent: 4573058 (1986-02-01), Brooks

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