Method and apparatus for producing successive lines of image poi

Details Method and apparatus for producing successive lines of image poi Method and apparatus for producing successive lines of image poi

1977-07-13

1978-05-16

Miller, Jr., George H.

Recorders

Light or beam recording

Including record receiver or handling means therefor

346 1, 354 4, G01D 942, G03B 4100

Patent

active

040902064

ABSTRACT:
Relative movement is effected between a recording medium and a row of light-emitting diodes (LED's). The row of LED's extends parallel to the direction in which the line of image points to be formed extends, and transverse to the direction of relative movement. Reduced-scale images of the LED's are projected onto the line on the recording medium on which the line of image points is to be formed. The LED's and/or the optical units forming the reduced-scale images are oscillated in a direction parallel to the direction in which the line of image points to be formed extends. Each image of an LED sweeps a straight linear region on the recording-medium line at least equal in length to the distance between adjoining LED's of the LED-row. During each n.sup.th half-period of oscillation, a succession of control signals is applied to each LED, determining a succession of adjoining image points which the respective LED forms upon the recording-medium line in question; n is an integer. The resultant line of image points contains a number of image points equal to an integral multiple of the number of LED's in the row of LED's.

REFERENCES:
patent: 3438057 (1969-04-01), Neitzel
patent: 3832488 (1974-08-01), Fahey et al.
patent: 3952311 (1976-04-01), Lapeyre
patent: 4000495 (1976-12-01), Pirtle

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