Crossover

Occurs when an image is printed on two adjacent pages in a publication

 

so readers perceive a single, unbroken image.

Customisation

A form of variable information printing. Used to describe a document

 

that has been customised to its audience. Generally a common

 

document template is used with different messages and content based

 

on customer preferences. See personalisation, versioning.

Delta-E

A scientific measurement for the difference between two colours. A

 

colour difference of 0 DE is a perfect match, 1 DE is defined as the

 

threshold of what is perceptible to the human eye, and 5 DE is

 

considered acceptable to print buyers.

Densitometer

A device used to measure light reflectance or transmission. Used for

 

calibration of a printer or press.

DFE

Short for digital front end. Also called RIP.

DI press

Offset press with direct imaging (DI) of plates digitally on the press.

 

Still a traditional offset press that offers reduced make-ready (or set-up)

 

times.

Die-cut

The process of cutting specific shapes onto a page with sharp steel

 

knives.

Digital front end

The platform that is responsible for job management, queue

 

management, raster image processing, and transfer of the image to the

 

print station. It encompasses the print service, the colour RIP, the

 

storage of Work In Process (WIP), RIPed files and fully automated

 

production services.

Digital printing

A printing system utilising electrostatic technology (where dry or liquid

 

toner is transferred using an electric charge). A characteristic of digital

 

printing is that every imaged page can be different.

Dot gain

The tendency for halftone dots to become larger and appear darker

 

because of wet ink spreading when it comes into contact with paper. It

 

is not a problem with digital or xerographic printing. Also called dot

 

spread.

Dot spread

The tendency for halftone dots to become larger and appear darker

 

because of wet ink spreading when it comes into contact with paper. It

 

is not a problem with digital or xerographic printing. Also called dot

 

gain.

Dots per inch

Used as a measure of addressability of a digital printer or sampling

 

resolution of a scanner. For example, the DocuColor 2045 and 2060 print

 

at 600 dots per inch.

dpi

Short for dots per inch.

Duotone

A two-colour halftone, usually printed with black and another colour.

Duplex

A form of double-sided printing. The printing press prints the first side,

 

flips the sheet, then prints the second side during a second pass.

DocuColor 2000 series design guide

G – 4

Page 182
Image 182
Xerox 2000 manual Dfe