Double speed dot matrix printhead

Details Double speed dot matrix printhead Double speed dot matrix printhead

1976-12-27

1978-03-21

Rader, Ralph T.

Textiles: fiber preparation

101 9305, B41J 304

Patent

active

040798240

ABSTRACT:
A dot matrix printer including a single printhead having two columns of print wires, the wires in one column being used to print only odd numbered dot columns on a record member and the wires in the other column being used to print only even numbered dot columns on the record member. In one embodiment the wire columns are spaced apart a distance equal to an even number multiple of the space between two adjacent dot columns and the wires in each column are then energized alterntely as the printhead traverses the dot column positions. In another embodiment the wire columns are spaced apart an odd number multiple of the space between two adjacent dot columns and the wires in each column are then energized simultaneously as the printhead traverses the record member.

REFERENCES:
patent: 3757346 (1973-09-01), Holland
patent: 3900094 (1975-08-01), Larsen et al.
patent: 4010835 (1977-03-01), Martin et al.

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