Colour separation
During te process of colour separation, a colourful digital image is broken down into separate colour separations according to its colour components.
Lexicon
Colour space
A colour space is based on a colour model, and is its concrete application to a colouring method (printer, monitor, etc). It therefore contains all colours that can actually be represented through this method and the associated materials.
Colour spectrum
In the printing industry, the term colour spectrum usually refers to an achievable colour space. The ‘colour spectrum’ describes the totality of colours that a printing process or a specific printer can reproduce. The colour spectrum is determined by the printing inks, inks and printing techniques used. ‘The new CANON printer has a super colour spectrum’ would be a classic colloquial formulation. The larger the colour space of a printing process, the more different colours can be reproduced accurately. Printing technologies such as offset printing, flexographic printing and digital printing …
Colour system
A colour system (or colour model) is an abstract mathematical method for determining and specifying colours and their relationship to each other.
It is sometimes referred to as colour space, although the latter is the concrete application of a colour model to a colour-producing method (printer, monitor, etc.).
Colour temperature
Measured in Kelvin. The colour temperature describes the perceived colour impression of a light source.
Colour vision
Human colour vision is a complex process that enables us to distinguish millions of shades of colour.
Contract proof
A Contract Proof is a color-consistent and legally binding proof according to ISO 12647-7 The Contract Proof is currently the highest proof standard with the narrowest tolerances and is therefore considered a “contract” between the proof maker and the printing house.
Corporate design
In short: CD; describes the entire, uniform appearance of a company and is an important part of its corporate identity.
A successful corporate design creates brand awareness and recognition of the company, thus contributing to its brand positioning.
Corporate identity
In short: CI; is the totality of the characteristic features of a company, its self-perception.
Create a proof
To “create a proof” means to make a digital proof or have a digital proof made. The term is synonymous with the word “to proof”.
CRI
The CRI (Colour Rendering Index) is a measure of the colour rendering quality of a light source. It indicates how well a light source reproduces the colours of objects in comparison to a reference light source, e.g. a daylight spectrum.
Cromalin
Cromalin is a proof printing process introduced by DuPont in the 1970s. A Cromalin proof is produced by successive exposures in layers on film, which is then laminated onto special paper.
Today, Cromalin no longer plays a role in proof production; it has been completely replaced by the cheaper and faster digital proof.
Crop
The removal of the background or insignificant elements from an image in order to perform image montages or to increase the optical effect.
Crop marks
Lines printed at the corners of the page to mark the final size of the design. The page is cut along these marks.
Also referred to as: trim marks, cut marks, crop margins.
Cropbox
The CropBox is the second largest box of a PDF file. It describes the part of a PDF file which is to be output to a printer or screen. It is often the same as the Mediabox.
CRPC
CRPC originates from the American sector and stands for “Characterized Reference Printing Conditions”.
CTF
The CTF process is the ‘computer-to-film’ process in which the printing plates are not exposed directly, but an offset film is first exposed as an intermediate product, which then exposes the final printing plate.
CTP
The CTP process is the ‘computer-to-plate’ process in which the printing plates are produced directly in a CTP imagesetter without the use of films. It is faster and more precise, but also more expensive than the classic CTF – ‘computer-to-film’ process
CxF
CxF stands for “Color Exchange Format”, an open XML format for the exchange of colour information.
D50
D50 is the standard lighting condition of the printing industry. It has a degree of whiteness of 5,000 Kelvin, which is the colour that glowing metal at 5,000 Kelvin would cast.