Colour temperature
Measured in Kelvin. The colour temperature describes the perceived colour impression of a light source.
Lexicon
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”.
Cromalin
Cromalin is a proofing production method, developed by DuPont in the 70s. The production of Cromalin proofs are done by layers of successive exposures on film which are then laminated onto special paper.
Today Cromalin are no longer important in the production of proofs. It wasi completely replaced by cheaper and faster digital Inkjet proofing.
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 directly exposed, but first an offset film is exposed as an intermediate product, which then is exposed onto the final printing plate. Compared to CTP “Computer-to-plate” platesetting CTF is cheaper, but also slower and the analog exposure on the printing plate is not as precise as CTP.
CTP
The CTP process is the “computer-to-plate” process in which the printing plates are produced directly in CtP platesetters without the use of films.
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.
D65
D65 is standardized viewing condition with 6500 K color temperature. It is the default setting for most monitors and is mainly used in color matching etc. for websites, so in media that are considered primarily to be viewed on the monitor.
In the printing industry, the standard light is D50 according to ISO 3664: 2009 standard, a warmer light than D65 with 5000 Kelvin color temperature, which is also used for color matching on the press and in the evaluation of proofs.
Delta-E
Delta-E is a unit for the colour distance between two colours.
Densitometer
Densitometers measure ink density and optical density.
Design grid
A design grid is an auxiliary construction and helps to place the texts, pictures and graphics in the layout. It serves to standardize the document.
Digital proof
A Digital Proof (Contract Proof) is an ISO certified test equipment for the graphics industry. A digital proof simulates the colour of offset printing or gravure printing colour accurate binding within the tight tolerances of ISO 12647-7. Today, a digital proof is processed via a RIP and then produced with pigment inkjet printers on special proofing papers.
Digital proofs
Digital proofs (correct: contract proofs) are an ISO-certified test equipment for the graphic arts industry. Digital proofs simulate the colourfulness of offset or gravure printing in a colour and legally binding manner within the narrow tolerances of ISO 12647-7. Today, they are almost exclusively calculated using a RIP and then produced with inkjet printers on special proof papers.