Print position control in a printer including a printer head mou

Details Print position control in a printer including a printer head mou Print position control in a printer including a printer head mou

1978-06-23

1980-01-29

Sewell, Paul T.

Typewriting machines

Carriage or carriage-moving or movement-regulating mechanism

Carriage-feed mechanism

400322, 400328, B41J 1930, B41J 2522

Patent

active

041859308

ABSTRACT:
A printer head is mounted on a carriage which is driven to travel in the row direction at a predetermined constant speed. A pulse generation device is provided for developing a pulse signal in response to the travel of the carriage in order to determine print width. A detection device develops a detection signal when the carriage reaches the first print position to initiate printing of the first character. The detection signal is applied to a counter which counts a time interval from a time at which the last pulse is developed from the pulse generation device to a time at which the detection signal is developed. The following character printing is effected each time the pulse generation device develops a predetermined number of pulses indicative of one character width or print pitch and the time interval determined by the counter has passed from the time at which the last pulse of the predetermined number is developed.

REFERENCES:
patent: 4034842 (1977-07-01), Giacone
patent: 4044882 (1977-08-01), Weinke et al.
patent: 4050564 (1977-09-01), Carmichael et al.
patent: 4076111 (1978-02-01), Robinson et al.
patent: 4118129 (1978-10-01), Grundherr
patent: 4143980 (1979-03-01), Giebler et al.

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