Optical scanner and method for generating and detecting a compos

Details Optical scanner and method for generating and detecting a compos Optical scanner and method for generating and detecting a compos

1989-10-05

1991-04-09

Nelms, David C.

Radiant energy

Photocells; circuits and apparatus

Optical or pre-photocell system

250236, 250205, 358481, 358457, 346108, G01J 132, H01J 314

Patent

active

050067044

ABSTRACT:
An optical scanner and method in which light beams from a plurality of sources are directed onto a medium to form a composite spot. The relative positions of the beams are detected and changed to change the diameter of the composite spot so that lines formed by such spots appear unbroken. The modulating times, intensities and number of sources of the beams can also be varied to provide a linear relation between the dither matrix and the picture element density.

REFERENCES:
patent: 4617578 (1986-10-01), Nezu et al.
patent: 4760407 (1988-07-01), Arimoto et al.
patent: 4768043 (1988-08-01), Saito et al.
patent: 4809021 (1989-02-01), Check et al.
patent: 4841137 (1989-06-01), Mochizuki et al.
patent: 4887225 (1989-12-01), Yao
patent: 4912568 (1990-03-01), Shimano

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