Facsimile and static presentation processing – Facsimile – Recording apparatus
Patent
1988-01-22
1989-03-14
Coles, Sr., Edward L.
Facsimile and static presentation processing
Facsimile
Recording apparatus
358294, 350266, H04N 104
Patent
active
048129135
ABSTRACT:
Diaphragm arrangement for point-by-point electro-optical scanning of originals, whereby the scan point is composed of a central main field and of a surrounding field surrounding the main field. A diaphragm for scanning the main field and a second diaphragm for scanning the surrounding field are provided, whereby the sizes of the diaphragm apertures of the two diaphragms are continuously adjustable independently of one another, whereby the diaphragm apertures of the first diaphragm define the size of the main field and, thus, the scanning fineness and the inside diameter of the surrounding field, and the diaphragm aperture of the second diaphragm defines the size of the surrounding field, and whereby the size relationship between main field and surrounding field is continuously adjustable on the basis of the independent and continuous adjustment of the two diaphragm apertures.
REFERENCES:
patent: 2961696 (1954-10-01), Yule
patent: 4268870 (1981-05-01), Kitamura et al.
patent: 4279003 (1981-07-01), Schulz
patent: 4484232 (1984-11-01), Gast
patent: 4516175 (1988-05-01), Jung et al.
Knop Hans-Georg
Schulz-Hennig Jorg
Coles Sr. Edward L.
Dr. -Ing. Rudolf Hell GmbH
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