Platen adjusting mechanism

Details Platen adjusting mechanism Platen adjusting mechanism

1986-10-06

1987-12-29

Pearson, Charles A.

Typewriting machines

Including adjustment for optimum printing plane

Responsive to thickness of record-medium

400 58, 4006372, B41J 1120

Patent

active

047157348

ABSTRACT:
An arrangement of a paper guide trough supporting pressure rollers to guide paper about the platen of a typewriter is used in conjunction with a platen having an elastic bearing to effect an automatic adjustment of the platen according to the thickness of paper inserted to maintain the same printing plane without additional components.

REFERENCES:
patent: 657187 (1900-09-01), Webb
patent: 2611469 (1952-09-01), Haas et al.
patent: 3171699 (1965-03-01), Maxey
patent: 4247213 (1981-01-01), Wurscher
IBM Technical Disclosure Bulletin, vol. 13, No. 10, Mar. 1971, p. 3070, "Multiple Copy Control for Typewriters" by Walton.
IBM Technical Disclosure Bulletin, vol. 26, No. 4, Sep. 1983, pp. 1834-1835, "Spring-Loader Round Platen" by Bratton et al.

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