Method and apparatus for operating a thermal printer with unifor

Details Method and apparatus for operating a thermal printer with unifor Method and apparatus for operating a thermal printer with unifor

1981-11-02

1983-07-26

Eickholt, E. H.

Typewriting machines

Typing by other than type-face or type-die

Character formation by impact

346 76PH, 219216, B41J 304, G01D 1510, G08B 536

Patent

active

043951465

ABSTRACT:
A method and apparatus are provided for controlling a printer of the type having a number of blocks of print heads, each block including print heads preferably of the thermal print type. Data signals representing the selective energization of the print heads are stored, and these data signals are selectively read out to energize a group of print heads in each block, sequentially by block. After one group of print heads in each block is energized, another, different group of print heads in each block is energized, and so on, until all of the print heads have been energized. The print heads in each group are sufficiently spaced from each other to minimize thermal interference due to the energization of an adjacent print head. Consequently, the temperature of the print heads is distributed uniformly.

REFERENCES:
patent: 3476877 (1969-11-01), Perkins et al.
patent: 3913091 (1975-10-01), Aizawa et al.
patent: 4071849 (1978-01-01), Koyano et al.
patent: 4141018 (1979-02-01), Mizuguchi et al.
patent: 4149171 (1979-04-01), Sato et al.
patent: 4216481 (1980-08-01), Hakoyama
patent: 4219824 (1980-08-01), Asai
patent: 4246587 (1981-01-01), Reilly et al.
patent: 4309712 (1982-01-01), Iwakura
patent: 4322733 (1982-03-01), Moriguchi et al.

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