Typewriting machines – For line-spacing by incremental rotation of platen – By electric-power drive
Patent
1987-06-10
1989-04-11
Wiecking, David A.
Typewriting machines
For line-spacing by incremental rotation of platen
By electric-power drive
400555, 400711, 400549, B41J 1992
Patent
active
048200697
ABSTRACT:
The present invention relates to a printing apparatus such as a typewriter which prints data from an inputting means on a printing medium.
In the case of the normal printing apparatus, a feed amount setting means is installed which sets the amount of feed of line feeding or space feeding for relatively moving a printing head and the printing medium, and for the line feeding or for the space feeding, a desired one among about four kinds of amounts of feed is required to be selected.
This printing apparatus comprises a unit feed amount selecting means for selecting a unit amount of feed, a feed amount setting means which selects a coefficient to multiply the unit amount of feed selected by this unit feed amount selecting means and sets the actual amount of feed, and a controlling means controlling a feeding mechanism so that the amount of feed of the relative movement is the amount of feed set by the feed amount setting means. Lamps are lit to indicate the feed amount.
REFERENCES:
patent: 3643039 (1972-02-01), Barcomb et al.
patent: 3644812 (1972-02-01), Bitto et al.
patent: 4500216 (1985-02-01), Demonte et al.
patent: 4558965 (1985-12-01), Ueda et al.
patent: 4609299 (1986-09-01), Hattori et al.
Centronics Model 351 Operator, Installation & Programming Instruction, Apr. 1984.
Brother Kogyo Kabushiki Kaisha
Wiecking David A.
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