All-points addressable dot printer

Details All-points addressable dot printer All-points addressable dot printer

B - Operations, Transporting

41

J

101/96

B41J 2/31 (2006.01) B41J 9/12 (2006.01) B41J 25/00 (2006.01)

Patent

CA 1124135

ABSTRACT An all-points addressable dot printer has rows of sloped parallel anvils on a rotating drum. Alter- nate rows slope in opposite directions for bi- directional printing with a single row of hammer blades. The blades which are spaced apart, are shifted bi-directionally in synchronism with the scanning motion of the anvils to print dots at all dot line points. A second embodiment has a recipro- cating comb bar located between the blades and a print medium. Spring fingers on the comb bar have dot forming protrusions. The spring fingers are uniformly spaced with center spacing equal to the center distances between the blades. Comb bar motion is linear with time along the line seg- ments. Blade motion is simple harmonic. EN978026

352820

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