Printing device with integrated print head fastening and adjustm

Details Printing device with integrated print head fastening and adjustm Printing device with integrated print head fastening and adjustm

1982-09-28

1984-01-17

Burr, Edgar S.

Typewriting machines

Including adjustment for optimum printing plane

In accordance with the number of sheets of record-medium

400 55, 400124, 400352, 400679, 400692, 101 9303, 74568R, B41J 2954, B41J 310

Patent

active

044261659

ABSTRACT:
For use in a printing machine, such as an office typewriter, employing a replaceable printing head to be mounted on a carriage, there is provided a printing head fastening arrangement for releasably clamping the printing head to the carriage and permitting adjustable spacing of the printing head relative to the cooperating print support for containing the recording medium. The inventive arrangement enables the fastening and adjustment function to be integrated such that both functions can be carried out in one step. To this end, a rotatable pin is disposed upstanding from the carriage and provided with an operating element, which is resiliently seated relative to the printing head, for selectively engaging against a support surface formed on the printing head to clamp the printing head against the carriage. An eccentric is also disposed on the pin which engages against the walls of a recess formed in the printing head, such that rotation of the pin and operating element causes the eccentric to relatively displace the printing head along the carriage toward or away from the print support.

REFERENCES:
patent: 64922 (1867-05-01), Strickland
patent: 2156614 (1939-05-01), Yaeger
patent: 4222673 (1980-09-01), Plaza et al.
patent: 4381896 (1983-05-01), Shiurila

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