Serial printer having two carriages carrying respective type whe

Details Serial printer having two carriages carrying respective type whe Serial printer having two carriages carrying respective type whe

1982-02-11

1984-01-17

Burr, Edgar S.

Typewriting machines

Including type-set-assemblage mounted on carrier and...

Imprint by movement of record-medium against type-face

400171, 101 9317, B41J 1118, B41J 132

Patent

active

044261675

ABSTRACT:
A serial printer of the type having a carriage carrying a type head and adapted to be column-shifted by a cooperation between a rack and a screw member. The printer comprises a rotary shaft adapted to be driven by a suitable power source, a first and second screw members splined to the rotary shaft, a first and second carriages carrying the first and second screw members, the first and second carriages having home positions defined at both ends of the column-shift, spiral screws formed on the first and second screw members and orientated in the opposite directions, and a rack member having short racks formed on both ends thereof and an intermediate long rack, the long rack being engageable selectively with the first and second screw members by a selection of rotational positions of the two short racks.

REFERENCES:
patent: 4051942 (1977-10-01), Suzuki et al.
patent: 4244291 (1981-01-01), Kodaira et al.
patent: 4310256 (1982-01-01), Inoue
patent: 4337697 (1982-07-01), Aoki et al.
patent: 4352576 (1982-10-01), Hori et al.
IBM Technical Disclosure Bulletin "High Speed Printer" by Pawletko et al., vol. 19, No. 9, Feb. 1977, pp. 3355-3356.

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