Binary scan system

Details Binary scan system Binary scan system

G - Physics

03

G

314/28, 314/8

G03G 13/04 (2006.01) G03G 15/04 (2006.01) H04N 1/405 (2006.01)

Patent

CA 1179727

BINARY SCAN SYSTEM ABSTRACT OF THE DISCLOSURE An original image is reproduced on an electro- photographic 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 approximately 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. -1-

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