Facsimile and static presentation processing – Facsimile – Recording apparatus
Patent
1984-02-21
1987-04-21
Coles, Sr., Edward L.
Facsimile and static presentation processing
Facsimile
Recording apparatus
358227, 358289, 358293, 358292, 355 55, 250201, 250578, H04N 104
Patent
active
046600949
ABSTRACT:
A method for obtaining a desired picture with high quality by scanning a rotating recording drum by a scanning light beam, which produces images on the drum through a projection lens, receiving the said images being reflected from the drum through the projection lens on an image sensor, detecting variations of diameter of the drum per each rotation from variations of intensity of light of the images, whereby position of the projection lens being movable along the normal direction of the drum is automatically adjusted against machining errors of the drum diameter and variations of the said diameter caused by changes of its surrounding or any other reasons, temperature, so that variations of imaging points of the scanning light beam can always be within a range of depth of a focus of the projection lens.
REFERENCES:
patent: 3997715 (1976-12-01), Elliot
patent: 4079247 (1978-03-01), Bricot
patent: 4152586 (1979-05-01), Elliot et al.
patent: 4370038 (1983-01-01), Kimura
patent: 4383274 (1983-05-01), Imuiya
patent: 4422097 (1983-12-01), Imuiya
patent: 4445126 (1984-04-01), Tsukada
Masuda Yoshikazu
Tsuda Masanari
Yokoi Masakatsu
Yoshimoto Takeshi
Coles Sr. Edward L.
Dainippon Screen Seizo Kabushiki Kaisha
LandOfFree
Method for focus adjustment of a picture scanning and recording does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Method for focus adjustment of a picture scanning and recording , we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method for focus adjustment of a picture scanning and recording will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-755571