Light beam scanning apparatus

Details Light beam scanning apparatus Light beam scanning apparatus

1987-08-28

1989-12-12

Hannaher, Constantine

Radiant energy

Automatic/serial detection of similar sources

271227, H04N 112

Patent

active

048869678

ABSTRACT:
A light beam scanning apparatus is provided wherein a sheet such as a stimulable phosphor sheet or photographic material undergoes two dimensional scanning by scanning the sheet with a deflected light beam to perform main scanning, and transferring the sheet in a direction perpendicular to the main scanning direction to perform sub-scanning, using two pairs of rollers synchronously driven to carry the sheet while clamping it therebetween. A sheet support member is located between the roller pairs and provided with at least two apertures in alignment with the main scanning line, and a photoelectric element is disposed in each of the apertures for receiving the light beam transmitted by the aperture, whereby any misalignment of the sheet can be detected.

REFERENCES:
patent: 4258264 (1981-03-01), Kotera et al.
patent: 4276473 (1981-06-01), Kato et al.
patent: 4315318 (1982-02-01), Kato et al.
patent: 4387428 (1983-06-01), Ishida et al.
patent: 4548401 (1985-10-01), Nishikawa
patent: 4582988 (1986-04-01), Aagano
patent: 4603253 (1986-07-01), Nakagawa
patent: 4638156 (1987-01-01), Horikawa et al.
patent: 4700066 (1987-10-01), Horikawa

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