Emphasized character dot-matrix printer having two groups of dot

Details Emphasized character dot-matrix printer having two groups of dot Emphasized character dot-matrix printer having two groups of dot

1989-05-30

1991-08-06

Wiecking, David A.

Typewriting machines

Carriage or carriage-moving or movement-regulating mechanism

For varying carriage feed

400121, B41J 251

Patent

active

050372211

ABSTRACT:
A dot-matrix printer for printing characters in a matrix of dots wherein columns of dots each column consisting of a suitable number of dots and extending in a given direction are arranged at a predetermined printing pitch in a printing direction intersecting the direction of the columns of dots. The printer has a print head which is moved in the printing direction and has a first and a second group of dot-forming elements for forming dots such that the dots formed by the second group correspond to the dots formed by the first group and are spaced in the printing direction, by a predetermined distance from the corresponding dots formed by the first group, if the first and second groups of dot-forming elements are activated simultaneously. A first and a second control device are provided for selectively activating the dot-forming elements of the first and second groups, respectively, during movement of the print head, according to dot information representative of characters, such that a character formed by the first group of dot-forming elements and the same character formed by the second group of dot-forming elements have a predetermined positional relation with each other.

REFERENCES:
patent: 3727234 (1973-04-01), Janning
patent: 4079824 (1978-03-01), Ku
patent: 4119383 (1978-10-01), Watanabe et al.
patent: 4159882 (1979-07-01), Sanders, Jr. et al.
patent: 4372696 (1983-02-01), Pou
patent: 4431319 (1984-02-01), Karaki et al.
patent: 4941761 (1990-07-01), Ogawa et al.
patent: 4969758 (1990-11-01), Sanders, Jr. et al.

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