PURPOSE:To enable simple and exact formation of a color instruction document by subjecting an original image to binary coding processing to obtain the line drawing of a pattern, displaying the line drawing, subjecting a required part to required coloring processing by a conversation method and outputting the result thereof by printing. CONSTITUTION:A counter 23 counts the horizontal synchronizing signal from a display processing unit 8 to a display device 9 and a counter 22 counts the pulse signal of an oscillator 21. The counter 23 is cleared by a vertical synchronizing signal and starts counting immediately. The counter 22 is cleared by a horizontal pulse signal and starts counting immediately. A light pen 10 detects light and outputs the light as an output signal after photoelectric conversion. Said signal stops the counters 23, 22. A control device 7 reads the values of the counters 23, 22 during stoppage, converse the same to a Y-coordinate value and X-coordinate value and outputs the values to the unit 8. The cursor indicating the read coordinates is thus always displayed on the device 9 while the pen 10 detects the light. A color scheme is thus distinctly known in the above-mentioned way, by which the mis-interpretation of colors is avoided. |
PURPOSE:To obtain a color plate with color reproducibility easily in a short time and at low cost by forming a color photocomposed original in a method of forming color plates for color printed matter, and separating colors of the original and obtaining dot negative plates for respective prime colors. CONSTITUTION:In a method of forming color plates for color printed matter, a desired pattern is photocomposed in a color photosensitive material by using luminous flux with a desired spectrum and this color photosensitive material is developed to obtain a color photocomposed original, which is color-separated by color scanners, etc., to obtain color plates for respective prime colors. Thus, plate making costs are reduced by eliminating the trouble of the plate making to shorten the plate making time, and the color plates with good color reproducibility are obtained easily without skillfullness, thereby performing reproduction in optional color tone easily. |
PURPOSE:To form a color original drawing rapidly and exactly, by forming a drawing having plural colors with color pencils or the like, extracting plural desired elements from this drawing, forming plural kinds of negative films, and optionally combining them. CONSTITUTION:An element A is drawn with a black pencil to form a fundamental drawing 1, this is photographed on a negative film 2, and blue monochromatic original drawings 3, 4, 5 are formed by coating a phtosensitive agent. Each element B, C, D different from each other is added on these 3 drawings 3, 4, 5 with a black pencil to form dichromatic original drawings 31, 41, 51, and these are photographed to make negative films 32, 42, 52, each having only the element B, C, or D. The negative films 2, 32, 42 containing the elements A, B, C are combined and printed on a photosensitive material, for example, forming dichromatic original drawing 6 having the red element A, the black elements B, C. The negative films 2, 32, 42, 52 containing the elements A, B, C, D are combined and, for example, a multicolor general original drawing 7 having the orange element A, the blue element B, the red element C, and the black element D is obtained. |