Ricoh KW5708, Service Training

Page: 53 / 61

Slide 53
Terms and Definitions - 6

Uneven colour

This term is used when the contrast and color of the image
is not constant. There are many possible causes for this.

Gradation

Between white and black, there are shades of grey. The
number of levels between white and black are called
gradations. The higher the number of gradations, the
greater effect on the image, but if the contrast is not high,
this effect is cancelled.

Color Separation

A computer video signal is separated into a black-and-white
signal and a colour signal. In a projector, it is separated into
three colors (red, green, blue). The condition of the
components that separate the light will have an effect on
the quality of the image.