Radiant energy – Photocells; circuits and apparatus – Optical or pre-photocell system
Patent
1984-10-04
1987-09-15
Nelms, David C.
Radiant energy
Photocells; circuits and apparatus
Optical or pre-photocell system
271266, H01J 314
Patent
active
046941630
ABSTRACT:
An apparatus for scanning a sheet-shaped recording medium comprises a first conveyance system and a second conveyance system for receiving and conveying the recording medium conveyed by the first conveyance system. The second conveyance system is spaced from the first conveyance system by a distance shorter than the length of the recording medium. A roller is positioned between the first conveyance system and the second conveyance system and moves up and down to contact and bend the recording medium after the recording medium conveyed by the first conveyance system reaches the second conveyance system. A scanning optical system is positioned on the side opposite to the roller with respect to the recording medium for scanning the bent surface of the recording medium by a light beam in a scanning direction normal to the conveyance direction of the recording medium.
REFERENCES:
patent: 1828000 (1931-10-01), Ranger
patent: 4054924 (1977-10-01), Zimmerman
patent: 4315318 (1982-02-01), Kato et al.
patent: 4387428 (1983-06-01), Ishida
patent: 4493994 (1985-01-01), Hilton
Kawai Yasuhiro
Ohgoda Makoto
Tamura Kaoru
Fuji Photo Film Co. , Ltd.
Nelms David C.
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