Print hammer with flux detection for print pressure control

Details Print hammer with flux detection for print pressure control Print hammer with flux detection for print pressure control

1987-12-01

1989-03-14

Wiecking, David A.

Typewriting machines

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

Imprint by movement of record-medium against type-face

400124, 101 9329, 361190, 361153, B41J 938

Patent

active

048120626

ABSTRACT:
A recording apparatus in which recording on a recording medium is perfomed by impacting against the recording medium. This recording apparatus has a recording unit which is constututed by a recording element supported so as to be reciprocatively movable relative to the recording medium, an electromagnet for generating a magnetic force which makes the recording element impact against the recording medium on the basis of a recording signal, a detection coil for detecting the magnetic flux generated by the electromagnet, and a controller for controlling, on the basis of the results of detection supplied from the detection coil, conditions under which the electromagnet is driven.

REFERENCES:
patent: 3900094 (1975-08-01), Larsen et al.
patent: 4273039 (1981-06-01), Luo et al.
patent: 4348119 (1982-09-01), Carson, Jr. et al.
patent: 4473311 (1984-09-01), Sakaida
patent: 4485425 (1984-11-01), Gruner et al.
patent: 4667117 (1987-05-01), Nebgen et al.
patent: 4744684 (1988-05-01), Maekawa

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