Transfer printer with ribbon transmission drive gear

Details Transfer printer with ribbon transmission drive gear Transfer printer with ribbon transmission drive gear

1991-07-10

1992-08-04

Eickholt, Eugene H.

Typewriting machines

Including adjustment for optimum printing plane

Responsive to thickness of record-medium

400120, 400223, 400664, B41J 1120

Patent

active

051353156

ABSTRACT:
A transfer printer includes a platen drive mechanism for rotating a platen roller facing a print head, and a paper feed mechanism for feeding a paper sheet passing between the platen roller and the head. A ribbon supply device is driven through a transmission mechanism by the drive power of the feed mechanism. The transmission mechanism has a roller holder supporting a transmission gear and arranged to be movable between a transmission position wherein the transmission gear engages an interlocking gear of the feed mechanism and an input gear of the ribbon supply device and a release position wherein the transmission gear is disengaged from the input gear so as to interrupt the power transmission. The roller holder is urged by a spring toward the transmission position, and restricted an excessive movement to the transmission position so that the transmission gear is in mesh with the input gear with a suitable backlash.

REFERENCES:
patent: 4575267 (1986-03-01), Brull
patent: 4886384 (1989-12-01), Harry
patent: 5000591 (1991-03-01), Burgess
patent: 5061095 (1991-10-01), Asai et al.
patent: 5062722 (1991-11-01), Shiozaki
patent: 5064300 (1991-11-01), Kashiwabe

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