Impact printer with variable delay for print cycle based on diff

Details Impact printer with variable delay for print cycle based on diff Impact printer with variable delay for print cycle based on diff

1986-04-07

1987-12-01

Sewell, Paul T.

Typewriting machines

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

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

4001573, 400166, 400322, B41J 130

Patent

active

047100435

ABSTRACT:
A printing device comprises a carriage having a printing wheel, a printing ribbon driver and printing hammer fixed thereto, carriage driver for driving the carriage along a platen, wheel driver for setting the printing wheel to a position corresponding to an input character code, and hammer for driving the printing hammer. The printing device further comprises a memory for storing energy data corresponding to a character code representing a type formed at the top end portion of a corresponding spoke of the printing wheel as well as time data, and a control circuit for reading the energy data corresponding to the input character code as well as the time data and for supplying the energy data from the memory to the hammer driver when the printing wheel is set to a printing position designated by the input character code and preventing an operation of the wheel driver over a time period corresponding to the time data from the memory after the printing hammer has been driven by a printing energy corresponding to the energy data.

REFERENCES:
patent: 4037208 (1977-07-01), Osterlund et al.
patent: 4118129 (1978-10-01), Grundherr
patent: 4293233 (1981-10-01), Hoffman
patent: 4493570 (1985-01-01), Araki
Xerox Disc. Bulletin, by David R. Deetz, vol. 4, No. 2, Mar./Apr. 1979, pp. 157-158.
IBM Tech. Disc. Bulletin, vol. 28, No. 10, Mar. 1986, pp. 4386-4390.
IBM Tech. Disc. Bulletin, vol. 27, No. 7B, Dec. 1984, pp. 4423-4425.

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