Stackable dot matrix printing cartridge modules

Details Stackable dot matrix printing cartridge modules Stackable dot matrix printing cartridge modules

1982-04-22

1984-07-31

Sewell, Paul T.

Typewriting machines

Typing by other than type-face or type-die

Character formation by impact

101 9305, B41J 312

Patent

active

044627068

ABSTRACT:
A high degree of flexibility and speed in dot matrix printing are achieved by providing printing cartridge modules that are so thin, a number can be stacked together and run simultaneously. Depending on the array used, several lines can be printed at the same time, or a single line can be developed from a standard dot matrix character into a fully formed character. In one embodiment, the print wires are formed into a linear array parallel to the flat side of the cartridge module, and the modules are stacked vertically with respect to the print medium. This embodiment is preferred for overlay printing. In a second embodiment, the print wires are formed into a linear array perpendicular to the flat side of the cartridge module, and the modules are stacked horizontally with respect to the print medium. This embodiment is preferred for multiple line printing, and has the additional advantage of being sufficiently flat to fit within the upper and lower planes of a ribbon cartridge. Both embodiments utilize the M-cell electromagnet actuator described in U.S. Pat. Nos. 4,134,691 and 4,218,148. While the mounting of the actuators and means for guiding the print wires differs considerably in the two embodiments, in all the cases the individual armature mounting and armature-print wire movement are in a single plane, and the angle between the print-wire axis and the armatures is less than 10.degree..

REFERENCES:
patent: 4218148 (1980-08-01), Matschke

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