Mechanism for adjusting the spacing between the print head and p

Details Mechanism for adjusting the spacing between the print head and p Mechanism for adjusting the spacing between the print head and p

1985-06-12

1987-04-14

Pieprz, William

Typewriting machines

Including adjustment for optimum printing plane

By adjustment of carriage

400 57, 400355, B41J 1120

Patent

active

046574158

ABSTRACT:
A shoe in the form of a cylindrical screw is rotatably threaded through a carriage supporting a print head and has one end held slidably against a guide rail parallel to a main guide shaft on which the carriage is movable parallel to the platen of an impact printer. The shoe is rotated about its own axis to tilt the carriage and hence the print head to adjust the spacing between the print head and the platen. The shoe is rotated by a gap change lever angularly movably supported on the carriage and having teeth for mesh with a gear mounted on the shoe. For initializing the spacing between the print head and the platen, the gear on the shoe is displaced out of mesh with the teeth of the gap change lever and rotated to turn the shoe. To achieve a desired spacing between the print head and the platen, the gear on the shoe is moved into mesh with the teeth of the gap change lever, and the gap change lever is turned to rotate the gear and the shoe for angular movement of the carriage.

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patent: 4514101 (1985-04-01), Smith
patent: 4525084 (1985-06-01), Ikeda

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