Printing – Selective or progressive – Bed and platen machines
Patent
1974-08-14
1976-04-06
Shapiro, Paul E.
Printing
Selective or progressive
Bed and platen machines
346101, B41J 2500
Patent
active
039481689
ABSTRACT:
A printer for printing in alpha-numeric character form information from a digital source available in the form of a video-type signal representative of alpha-numeric characters corresponding to the digital information. The printer utilizes a high speed rotating spindle having at least one spiral electrical conductor on its periphery and means for forming a mark on a continuous sheet of paper in response to an electrical signal applied to the spiral conductor. The paper is moved past the spindle at a velocity proportional to, but substantially less than the tangential velocity of the spiral conductor. The video-signal is received into a double buffer memory and unloaded to the spiral conductors in phase sequence with the rotation of the spindle whereby a matrix of dots is formed on the paper in designated locations so as to produce alpha-numeric characters corresponding to the digital information.
REFERENCES:
patent: 2202855 (1940-06-01), Hogan et al.
patent: 3286625 (1966-11-01), Petit
patent: 3678847 (1972-07-01), Pear, Jr. et al.
Alden "Flying Spot" Helix Recorder As Show in Alden Catalog 3/1971 pp. cover-15.
Sandford Dean
Shapiro Paul E.
Vance Willison K.
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