Serial printer having means for controlling print head in relati

Details Serial printer having means for controlling print head in relati Serial printer having means for controlling print head in relati

1987-10-19

1989-10-31

Wright, Jr., Ernest T.

Typewriting machines

Typing by other than type-face or type-die

Character formation by impact

400124, 400320, 400322, B41J 302

Patent

active

048773433

ABSTRACT:
A serial printer including a print head, a carriage supporting the print head and moved by a drive motor along a line of printing, a pulse generating device for generating pulse signals corresponding to incremental distances of movement of the carriage, a time-data memory for storing time data representative of a time interval between a point of generation of each of the pulse signals, and a point at which the print head effects a printing operation, and a time-interval measuring device operable to measure the time interval according to the time data stored in the time-data memory. The time-interval measuring device generates a printing command to activate the print head upon termination of measurement of the time interval.

REFERENCES:
patent: 4169991 (1979-10-01), Ross
patent: 4180335 (1979-12-01), Yamada
patent: 4185930 (1980-01-01), Umeda et al.
patent: 4203678 (1980-05-01), Nordstrom et al.
patent: 4213714 (1980-07-01), Jones et al.
patent: 4232975 (1980-11-01), Kane
patent: 4405245 (1983-09-01), Fukushima
patent: 4415286 (1983-11-01), Jennings
patent: 4468140 (1984-08-01), Harris
patent: 4487515 (1984-12-01), Harris
patent: 4652159 (1987-03-01), Nagai
patent: 4669897 (1987-06-01), Asakura et al.
patent: 4683818 (1987-08-01), Hewlett, Jr.

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