QMS 860, User Manual, Page: 357 / 398

6 Violet 59%
7 Orange 25.8%
8 Brown 50%
NOTE: The color for both pen 1 and pen 2 is black. However, the
pen width (thickness in tenths of millimeters) for these
two pens is different. Pen 1 is 7 mm and pen 2 is 3 mm.
The printer maps each pen to its assigned color, then converts the
color to a grayscale using the National Television System
Committee (NTSC) standard equation for encoding color. This
equation converts a given set of CMYK values to grayscale. For
the 8 pen colors assigned to pens 1 - 8, the printer uses the
designated grayscale; for any other pen color, the printer uses the
following equation:
[(C*0.3) + (M*0.59) + (Y*0.11) + K]
÷
255
NOTE: This equation assumes that each grayscale is a byte value
that ranges from 0 to 255 (100%). If the sum of the
left-side (calculation in brackets) of the NTSC equation
is greater than 255, then the sum is set equal to 255.
Example:
Any color can be reproduced by using some combination of
CMYK. If you have defined the following CMYK values for the
color brown in your application, the NTSC equation that follows
shows you how the percentage of grayscale for the color is derived.
CMYK Value
C (96)
M (128)
Y (224)
K (0)
♦
Appendix F
A d d i t i o n a l T e c h n i c a l I n f o r m a t i o n F - 2 9