(D) De-Inking Open info
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Process used to remove ink from waste paper prior to re-manufacture. The process uses detergents and water and is relatively benign to the environment. Bleaching is not part of this process. Most recycled grades are not re-bleached and de-inking should not be described as bleaching.
(D) Dioxins
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Dioxins are a group of chlorinated compounds; one of which has been described as the most toxic known molecule produced by humans. Dioxins cannot be controlled in wastewater purification plants. They cause genetic mutations, damage internal organs and are probably carcinogens.
(D) DAM
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see Digital Asset Management
(D) DFE
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see Digital Front End
(d) dpi
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see Dots per inch.
(D) DI
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see Direct Imaging.
(D) Dandy roll Open info
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The roll on the wet end of a papermachine, in contact with the upper surface of the forming web, which is covered with a woven wire and usually carries a design to form a watermark.
(D) De-inkability
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Suitability of recovered paper for de-inking; depends on paper grade, printing process used, age of paper and other factors. Some forms of inkjet have raised problems with de-inkability.
(D) Densitometer
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An instrument for measuring the density of a colour or differences in tone.
(D) Density
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The darkness of a printed image.
(D) Digital Asset Management
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The practice of storing and retrieving digital or electronic files such as images, logos and marketing collateral in a centralised system. Particularly useful for printers who work on catalogue, brochure or corporate production.
(D) Digital Front End (DFE)
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The device used to drive the data to the print machine.
(D) Digital paper
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Paper specifically designed and optimised for digital printing technology.
(D) Digital press
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A press that receives its image directly from a computer file.
(D) Digital printing
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The printing process where an image is applied to the substrate directly from a digital file rather than using plates or film. Digital printing includes a variety of different technolgies including inkjet, electrostatic, thermal transfer, or laser.
(D) Digital proofing
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Proofing directly from digital files instead of using film to create proofs.
(D) Dimensional stability
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Ability of paper to retain its dimensions and its shape (a) despite changes in its moisture content under the influence of, for example, variations in the surrounding atmosphere, or (b) despire variations of the physical and mechanical stresses during printing and converting operations or use.
(D) Direct Imaging (DI)
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The process of directly imaging plates on press.
(D) Display papers and boards
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A wide range of coated papers and boards used for display and exhibition purposes.
(D) Distribute and print
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Electronically forwarding a file and then printing the job at the point of delivery.
(D) Dots per inch (dpi)
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Used usually in the context of semitone or process printing, which refers to the frequency of print dots appearing.
(D) Double coating
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Coating of paper or board twice on one or both sides.
(D) Down time
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on-productive time when a printing machine is being maintained or cleaned.
(D) Drop on Demand inkjet (DOD)
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Printing process where separate droplets are expelled through a nozzle in the printhead.
(D) Duplex paper and board
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Grade made from two different webs combined during the manufacturing process while still moist, without the use of adhesive. This combination may, for example, be two different webs of furnish, colour or substance.
(D) Duplex printing
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Printing on both sides of a sheet.
(D) Dummy
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An unprinted representation of the text pages of a book or magazine made by folding and collating sheets of the intended quality, size and grammage of paper so that an idea may be formed of the general appearance and thickness of the final result.
