Typewriting machines – Including plural – independently supported key-boards,...
Patent
1984-12-10
1986-03-18
Pieprz, William
Typewriting machines
Including plural, independently supported key-boards,...
400149, 400 17, 400 18, B41J 344, B41J 358, B41J 304
Patent
active
045764905
ABSTRACT:
The present invention relates to a multihead serial printer comprising a plurality of printing heads mounted on different carriages and having a high-speed printing mode in which a plurality of printing heads print different letters and a high-density printing mode in which a plurality of printing heads print different parts of one letter. These two printing modes can be changed over between each other. A plurality of carriages are independently supported by a common guide and the carriages are respectively movable in the line direction by different driving sources. At least one carriage comprises a shift mechanism for moving the printing head in the row direction along the surface of a platen.
REFERENCES:
patent: 4389126 (1983-06-01), Homma et al.
Leontiades "Condensed Text Printing" IBM Technical Disclosure Bulletin vol. 25, No. 7B p. 3699 12/82.
Pawletko et al. "High Speed Printer" IBM Technical Disclosure Bulletin vol. 19, No. 9 pp. 3355-3356 2/77.
Berger Peter L.
OKI Electric Industry Co., Ltd.
Pieprz William
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