Method and apparatus for making monochrome facsimiles of...

B - Operations – Transporting – 41 – L

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354/8, 178/3.1

B41L 19/00 (2006.01) B41M 5/00 (2006.01) H04N 1/40 (2006.01) H04N 1/50 (2006.01) H04N 1/52 (2006.01) H04N 1/58 (2006.01)

Patent

CA 1161765

ABSTRACT Method and apparatus are disclosed for making 35 mm color slides from a color image created on a color cathode ray tube (CRT) terminal. The color terminal transmits commands to a remote central processing unit (CPU) that in turn operates a 35 mm camera device to expose 35 mm color slide film. Prior to transmitting the commands, a black on white facsimile of the color image is created by a graphic printer located at the color terminal. The black and white facsimile uses different halftone dot patterns in a monochrome graphic image to simulate the different colors created at the color terminal. The halftone dot pattern density is related to the luminance of the color it represents and the scale of the dot pattern is large to enable ready detection by the human eye. Also, different dot patterns are used for different colors and on edge enhancement technique is used to distinguish one simulated color region from another in the monochrome image.

370956

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