Carriage drive unit for avoiding a loss time period in a printer

Details Carriage drive unit for avoiding a loss time period in a printer Carriage drive unit for avoiding a loss time period in a printer

1987-12-22

1989-02-21

Burr, Edgar S.

Typewriting machines

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

Including type-faces movable relative to type-face-carrier

400322, B41J 1950

Patent

active

048060291

ABSTRACT:
A carriage drive unit for a printer includes a typewheel and a printing hammer for striking a type element of the typewheel against a ribbon to reproduce the type element on a printing paper, both of which are provided on a carriage. The carriage is driven by a carriage drive motor in response to a drive control signal SG2 output by a CPU, before the printing hammer, which is driven by a hammer drive motor in response to a drive control signal SG5, reaches a printing position, for avoiding a loss time period due to a carriage response delay upon a start of the carriage drive motor.

REFERENCES:
patent: 3994381 (1976-11-01), Hebert
patent: 4134692 (1979-01-01), Suzuki et al.
patent: 4710043 (1987-12-01), Matsushita
IBM Technical Disclosure, "Control Algorithm for Improved Print Registration", vol. 28, No. 10 (Mar. 1986) pp. 4386-4390.

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