Facsimile and static presentation processing – Facsimile – Recording apparatus
Patent
1980-04-11
1984-03-27
Orsino, Jr., Joseph A.
Facsimile and static presentation processing
Facsimile
Recording apparatus
358263, 358282, 358285, 358294, H04N 100, H04N 1028, H04N 140
Patent
active
044397895
ABSTRACT:
An original image is reproduced on an electrophotographic member with a series of binary data bits having a statistically valid count corresponding to the relative density of the original image.
A sensor senses the density value of individual information forming structure or structures in incremental areas of the original image and converts the density values into a series of binary data bits, one bit per incremental area. An imager receives the binary data bits and forms one binary element on the charged electrophotographic member surface in response to each bit. The elements formed on the member surface correspond in sense to the binary data bits from the sensor and the elements are formed in incremental areas of the member corresponding to the incremental areas of the original image from which their respective binary data bits were produced.
An aperture of the sensor which determines the size and configuration of the incremental area scanned is adjustable to aproximately the size and configuration of the information structure and a threshold level value of the sensed density values is adjustable to the mean of the sensed densities of the original image so that a sensed density value above the threshold value produces a binary bit of one sense and a sensed density value below the threshold value produces a binary bit of the other sense to produce the statistically valid count of the series of binary data bits.
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Thorpe-Optical Scanner-IBM Tech. Discl. Bull. vol. 4, #7, Dec. 1961, p. 20.
Coulter Systems Corporation
Orsino Jr. Joseph A.
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