Parallel line printer

Details Parallel line printer Parallel line printer

1978-06-27

1980-09-30

Coven, Edward M.

Printing

Selective or progressive

Bed and platen machines

101 1, 400551, 400120, B41J 770

Patent

active

042248698

ABSTRACT:
According to a representative embodiment of the invention, a parallel line printer such as a thermal printer is provided having a parallel printing head with a plurality of printing elements arranged to extend across the width of a paper strip. Electrical signals representative of characters to be printed can be stored in a storage device having a capacity corresponding to a full line of characters, and a print control logic is operative to cause the printing head to print up to a full line of characters simultaneously, or substantially so, in response to a print command. Means are provided to permit printing to be resumed on a line already containing characters printed in response to certain print commands. In the case when the paper is typically moved forward after one line has received print, means are provided to return such line back under the printing head if printing must resume on such line. A print command initiating a printing operation before the characters of a full line have been received may be produced whenever the time interval between successive ones of the character representative signals received exceeds a predetermined length.

REFERENCES:
patent: 2895585 (1959-07-01), Guldner et al.
patent: 3633720 (1972-01-01), Tyler
patent: 3919935 (1975-11-01), Langnickel
patent: 3967714 (1976-07-01), Potma et al.
patent: 3991671 (1976-11-01), Aizawa et al.
patent: 4024506 (1977-05-01), Spaargaren

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