Dot matrix printer having a print head position adjusting featur

Details Dot matrix printer having a print head position adjusting featur Dot matrix printer having a print head position adjusting featur

1991-01-30

1992-02-18

Eickholt, Eugene H.

Typewriting machines

Including adjustment for optimum printing plane

By adjustment of carriage

400124, B41J 1120

Patent

active

050888420

ABSTRACT:
For dot impact printers having a platen which may be installed such that the geometric central axis thereof is displaced off a rotation axis about which the platen rotates, a carriage on which a print head is mounted is moved toward the platen from a predetermined position until the distal end portion of the carriage is brought in abutment with the circumference of the platen to thereby measure the surface level of the platen. This measurement is repeatedly carried out while angularly rotating the platen. The thus measured surface levels of the platen are averaged, and based on the average data an optimum position of the print head to be located apart from the sheet of print paper supported on the platen is determined.

REFERENCES:
patent: 4562153 (1987-03-01), Kotsuzumi et al.
patent: 4676675 (1987-06-01), Suzuki et al.
patent: 4812059 (1989-03-01), Masaki
patent: 4974974 (1990-12-01), Yoshida et al.
patent: 4990004 (1991-02-01), Kawashara et al.

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