High speed dual pitch impact printer

Details High speed dual pitch impact printer High speed dual pitch impact printer

1979-03-12

1980-11-25

Coven, Edward M.

Printing

Selective or progressive

Bed and platen machines

101 9314, B41J 912, B41J 120

Patent

active

042351677

ABSTRACT:
An impact printer is capable of printing at either ten characters per inch or fifteen characters per inch by changing the type character carrying member. The print hammers are spaced at the same distance apart as are the type characters on the carrying member or band and the hammers are displaced from a home position by one space for printing the fifteen characters per inch at a higher speed than when printing at ten characters per inch. The hammers are time shared and are caused to be moved or shifted a precise distance of 4 increments of 1/30 inch each for a standard pitch band at ten characters per inch or a precise distance of 2 increments of 1/30 inch each for a compressed pitch band at fifteen characters per inch.

REFERENCES:
patent: 3899968 (1975-08-01), McDevitt
patent: 3952648 (1976-04-01), Sory et al.
patent: 4009654 (1977-03-01), Harris et al.
patent: 4055117 (1977-10-01), Munday
patent: 4074068 (1978-02-01), Wada et al.
patent: 4152987 (1979-05-01), Sapino

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