Recorders – Printing – dotting – or punching marker – Ink transfer support or moving means
Patent
1978-03-22
1980-05-13
Wolff, John H.
Recorders
Printing, dotting, or punching marker
Ink transfer support or moving means
G03G 1700
Patent
active
042031214
ABSTRACT:
The printer records images in the form of dots on electrical discharge-sensitive paper. Three groups of five styli are mounted on a rotor. The paper is in strip form and is fed continuously through a curved guide in a direction perpendicular to the plane of rotation of the rotor. Characters are formed from a 5 dot by 7 dot matrix. A disc is mounted on the same shaft and rotates with the rotor. This divisional patent is directed to the feature in which the disc has timing marks located around its edge with a spacing corresponding to the desired spacing between dots. The marks are detected and electronic circuitry produces corresponding timing pulses, one for every desired dot location. The paper feed mechanism is geared to the same drive shaft as the rotor. Thus, the formation of each dot is synchronized with the paper feed so that the printer can operate at a wide variety of speeds, and can start printing relatively soon after starting. Also, means are provided for varying the circumferential spacing of images by varying the dot count between successive images. Means also are included for providing a variable blank margin at the edge of each printed area on the paper.
REFERENCES:
patent: 2850350 (1958-09-01), Wise
patent: 2907621 (1959-10-01), Eisler
patent: 2910339 (1959-10-01), Eisler
patent: 3678193 (1972-07-01), Yamamoto
SCI Systems Inc.
Wolff John H.
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