Optical printing device

Details Optical printing device Optical printing device

1983-08-10

1985-07-30

Goldberg, E. A.

Recorders

Printing, dotting, or punching marker

Ink transfer support or moving means

355 1, 350 9615, G01D 942

Patent

active

045325278

ABSTRACT:
An optical printing device for generating a linear light pattern which is applied to a moving photosensitive recording medium, which device is composed of a plurality of subassemblies each located for providing a respective segment of the linear light pattern, each subassembly including: a unit composed of a row of generally parallel optical fibers arranged to conduct light from a light source to their output ends, and a photocoupler composed of a thin transparent plate extending transversely of the direction of light propagation by the optical fibers and having a light entrance surface coupled to the output ends of the optical fibers to receive light therefrom, a light exit surface to which light is conducted from the light entrance surface, and lateral surfaces spaced apart in the direction of the linear pattern and extending between the light entrance and light exit surfaces. Each unit is constructed for causing substantially all of the light arriving at the light entrance surface from the optical fibers to be conducted to the light exit surface over a region thereof which, in the direction of the linear pattern, is shorter than the light entrance surface, with both ends of that region being spaced inwardly, in the direction of the linear pattern, from the corresponding ends of the light entrance surface, to enable the entire linear pattern on the recording medium to have an intensity which is uniform except for the variations resulting from modulation by the light switching cells.

REFERENCES:
patent: 4364064 (1982-12-01), Baues
patent: 4405207 (1983-09-01), Kay
patent: 4449153 (1984-05-01), Tschang
patent: 4470075 (1984-09-01), Yoshimoto

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