Printing apparatus and a control method therefor

Details Printing apparatus and a control method therefor Printing apparatus and a control method therefor

1997-07-22

1999-01-26

Hilten, John S.

Typewriting machines

Including interposed inking device for record-medium

Means auxiliary to ribbon mechanism

4002482, 400642, B41J 3356

Patent

active

058631399

ABSTRACT:
A printing apparatus comprises a platen, a dot impact print head (23) opposite to the platen, a mask plate (40) between the platen and the print head with a paper passage between the platen and the mask plate (40), and an ink ribbon (31) between the print head and the mask plate. Transport mechanisms are provided to move the mask plate (40) in a direction substantially perpendicular to said paper passage between a first position on the print head side and a second position on the platen side, the transport mechanisms being responsive to the position of the print head along the platen. In the first position of the mask plate a relatively wide gap between the platen and the mask plate enables easy paper insertion, while in the second position a relatively wide gap between the mask plate and the print head facilitates replacement of the ink ribbon without problems.

REFERENCES:
patent: 4496256 (1985-01-01), McMorrow et al.
patent: 4844361 (1989-07-01), Feron et al.
patent: 4846595 (1989-07-01), Kato et al.
patent: 4897589 (1990-01-01), Fujiwara et al.
patent: 4929102 (1990-05-01), Mizutani et al.
patent: 5090825 (1992-02-01), Merriman, Jr. et al.
patent: 5286123 (1994-02-01), Kusumi
patent: 5613785 (1997-03-01), YUasuoka
IBM Technical Disclosure Bulletin; vol. 16, No. 3, Aug. 1973, New York USA, pp. 834-835; XP002015719; G. C. Matuck and W. D. Thorne, "Detentable Ribbon Shield".

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