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Contrast, Conventional screening, Creep – Konica Minolta bizhub PRESS C1100 User Manual

Page 256: Ct file format, Database, Dcs (desktop color separation), Dcs-2, Densitometer

background image

contrast

The ratio between the light tones and the dark tones in an image.
If you increase the contrast, highlights become lighter while
shadows become darker.

conventional screening

A method of screening in which an image is broken down into a
series of dots of varying sizes that are placed in a rigid grid
pattern. Color images are separated into the four process colors,
and individual screens of color are created and then skewed at
angles to reproduce the image in print.

creep

The extension of middle pages of a folded signature slightly
beyond outside pages. Shingling compensates for creep.

CT file format

A four-color (CMYK) continuous-tone (or contone) raster file
format. Gradient tones and continuous-tone data are sometimes
converted to CT format.

database

A software module that holds site configuration information, edition
plan information, and the current state of each process and
planned item. At least one workstation at each site must have a
database installed.

DCS (desktop color separation)

An EPS format containing five files: four of the files contain the
separated color information for each of the CMYK colors and the
fifth is a low-resolution composite file for use in electronic page
layout. DCS1 format has five separate files. One file acts as the
preview and the other four contain the information for printing the
different channels of CMYK color.

DCS-2

A desktop color separation (DCS) file with additional files that
contain spot color information.

densitometer

An electronic instrument which measures the optical density of film
or reflective media. A transmission densitometer is used to

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Chapter 15—Glossary

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