
Bleed | An image that extends to all four edges of a page. The extra amount of |
| the image that is printed on a sheet beyond the crop marks (the sheet |
| is then trimmed to size). |
Calendered | Paper that has been passed through a series of stainless steel rollers |
| that produce a very smooth finish to the paper. |
Calibration | A procedure to set equipment (such as displays, printers, presses, and |
| scanners) to a standard level to ensure predictable results. |
Caliper | The thickness of a sheet of paper, measured in microns. |
Chalking | Pigment dusts off of prints because the ink was absorbed too rapidly |
| into the paper (when printing on an offset press). |
Choke | A form of trapping. A choke traps a light background to a dark |
| foreground. The lighter colour is spread inward slightly into the darker |
| colour to maintain the visual edge. See also spread. |
Chroma | The vividness or dullness of a hue. One of the three characteristics that |
| describe colour (along with hue and value). Also called saturation. |
CIELAB | A |
| b*) are used to describe a colour. L* represents lightness, and the |
| chromatic axes are a* (the red/green axis) and b* (the yellow/blue |
| axis). CIELab defines the largest gamut or colour space. |
CMM | Short for Colour Matching Module. A part of the colour management |
| system that connects together profiles to produce colour transformations |
| for a group of devices. |
CMS | Short for colour management system. |
CMYK | Short for cyan, magenta, yellow and black – the four printing, or |
| process, colours. They are the three subtractive primaries (cyan, |
| magenta and yellow), as well as black, used to enhance colour and |
| improve contrast. |
Coated | Paper that has additional pigments and binders added to enhance the |
| surface quality and printability of the stock. |
Collate | The ability of the printing press to assemble sheets in the correct order. |
Collating | The process of gathering signatures together so that page 1 is followed |
| by page 2, page 3, and so on. |
ColorSync | The colour management framework that is used in the Macintosh |
| environment. |
Colour management |
|
system | A software system that controls the transformation of colour values of |
| different devices to ensure consistent results between different devices. |
| Profiles are generated for input devices (like scanners and digital |
| cameras), displays, and output devices (like printers and presses). These |
| profiles tell the conversion routines of the colour management system |
| how to convert the colour values of one device to another. |
DocuColor 2000 series design guide
G – 2