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Print Glossary

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C3

ISO envelope size 324 x 458mm.

C4

ISO envelope size 229 x 324mm C5 ISO envelope size 162 x 229mm.

C6

ISO envelope size 114 x 162mm.

C1S and C2S

Abbreviations for coated one side and coated two sides.

Calender

To make the surface of paper smooth by pressing it between rollers during manufacturing.

Calliper

1. Thickness of paper or other substrate expressed in thousandths of an inch (mils or points), pages per inch (ppi), thousandths of a millimetre (microns) or pages per centimetre (ppc).

2. Device on a sheet-fed press that detects double sheets or on a binding machine that detects missing signatures or inserts.

Camera-ready Copy (CRC)

Mechanicals, photographs and art fully prepared for reproduction according to the technical requirements of the printing process being used. *Also called finished art and reproduction copy. *

Canadian Binding

A wiro-bound book with a wrapped-around cover.

Carbonless Paper

Paper coated with chemicals that enable transfer of images from one sheet to another with pressure from writing or typing.

Carton

Selling unit of paper weighing approximately 150 pounds (60 kilos). A carton can contain anywhere from 500 to 5,000 sheets, depending on the size of sheets and their basis weight.

Case

1. Covers and spine that, as a unit, enclose the pages of a casebound book.

2. Term given to appearance of alphabetical characters - capitalised characters are upper case, non-capitalised are lower case.

Case Bind

To bind using glue to hold signatures to a case made of binder board covered with fabric, plastic or leather. Also called cloth bind, edition bind, hard bind and hard cover.

Cast-coated Paper

High gloss, coated paper made by pressing the paper against a polished, hot, metal drum while the coating is still wet.

Catalogue Paper

Coated paper with basis weight from 50 to 75 gsm commonly used for catalogues and magazines.

Catch up

Catch-up is a lithographic printing problem. It occurs when the printing plate accepts ink in the non-image areas. This unwanted ink prints as 'scumming'. Adjustment of the dampening solution usually solves this problem. Sometimes called dry-up.

Certified PDF

A certified PDF is one that has been created to a precise set of rules specified by the printer. In the case of Parliamentary Press we generate such rules (known as a profile) and give them to specific customers (Ofsted for example). The customer creates the PDF against the profile. When we receive the PDF it arrives with a 'flag' or tick which indicates that it meets our requirements and will pass through the digital workflow with no problems.

Chain Dot

1. Alternate term for elliptical dot, so called because midtone dots touch at two points, so look like links in a chain.

2. Generic term for any midtone dots whose corners touch.

Chain Lines

1. Widely spaced lines in laid paper.

2. Blemishes on printed images caused by tracking.

Chalking

Deterioration of a printed image caused by ink that absorbs into paper too fast or has long exposure to sun and wind making printed images look dusty. Also called crocking.

Champher

The effect of roughing on the cut edge of a finished product caused by the product being trimmed with guillotine blades which are insufficiently sharp.

Chapter

The published version of an Act of Parliament. Chapters run sequentially from 1 in each calendar year.

Check Copy

1. Production copy of a publication verified by the customer as printed, finished and bound correctly.

2. One set of gathered book signatures approved by the customer as ready for binding. See also Pass for Press, OKTP

CHI

Abbreviated term for Commission for Health Improvement. A series of publications (average 3 per week year-round) styled from electronic text by DTP, printed and finished in-house.

Choke

Technique of slightly reducing the size of an image to create a hairline trap or to outline. Also called shrink and skinny.

CIELab (L*a*b*)

A system of colour measurement. L*a*b* measurements are the numerical representation of any colour.

Chroma

Strength of a colour as compared to how close it seems to neutral grey. Also called depth, intensity, purity and saturation.

Clause

A single, numbered constituent part of the main body of a Bill of either House of Parliament. Each clause will deal with a specific part of the legislation being proposed.

Close-up

A proof-reader's mark used to indicate closing space between characters or words.

CMYK

Abbreviation for cyan, magenta, yellow and K (black), the four process colours.

Coarse Screen

Halftone screen with a ruling of 65, 85 or 100 lines per inch.

Coated Paper

Paper with a coating of clay and other substances that improves reflectivity and ink holdout. Mills produce coated paper in the four major categories: cast, gloss, dull and matte.

Cold-set Web

Web press without an oven to dry ink, thus able to print on uncoated papers only. The Solnas are cold-set web presses.

Collate

To organise printed matter in a specific order as requested.

Collating Marks

Mostly used in the bookwork field, specific marks on the back of signatures indicating exact position in the collating stage. Also called binder's marks.

Colour Balance

Refers to amounts of process colours that simulate the colours of the original scene or photograph.

Colour Blanks

Press sheets printed with photos or illustrations, but without type. Also called shells.

Colour Break

In multicolour printing, the point, line or space at which one ink colour stops and another begins. Also called break for colour.

Colour Cast

Unwanted colour affecting an entire image or portion of an image.

Colour Control Bar

Strip of small blocks of colour on a proof or press sheet to help evaluate features such as density and dot gain. *Also called colour bar, colour guide and standard offset colour bar. *

Colour Correct

To adjust the relationship among the process colours to achieve desirable colours.

Colour Curves

Instructions in computer software that allow users to change or correct colours. Also called HLS and HVS tables.

Colour Gamut

The entire range of hues possible to reproduce using a specific device, such as a computer screen, or system, such as four-colour process printing.

Colour Model

Way of categorising and describing the infinite array of colours found in nature.

Colour Separation

1. Technique of using a camera, scanner or computer to divide continuous-tone colour images into four halftone negatives.

2. The product resulting from colour separating and subsequent four-colour process printing. *Also called separation. *

Colour Sequence

Order in which inks are printed. The sequence can have an effect on final printed colours. *Also called laydown sequence and rotation. *

Colour Shift

Change in image colour resulting from changes in register, ink densities or dot gain during four-colour process printing.

Colour Transparency

Film (transparent) used as art to perform colour separations.

Comb Bind

To bind by inserting the teeth of a flexible plastic comb through holes punched along the edge of a stack of paper. Also called plastic bind and GBC bind (a brand name).

Command Paper

Publication carrying Crown copyright which is produced to a specific order of Parliament. Command Papers will be sponsored by one or more government departments and will centre around a specific investigation or report.

Committee

1. Body of either House of Parliament selected to debate a specific matter.

2. Generic name given to the publication of the transcript of a days debate.

Commons

1. The lower House of Parliament.

2. Generic name for a daily part of Hansard containing transcript of a day's debate.

Composite Proof

Proof of colour separations in position with graphics and type. Also called final proof, imposition proof and stripping proof.

Composition

1. In typography, the assembly of typographic elements, such as words and paragraphs, into pages ready for printing.

2. In graphic design, the arrangement of type, graphics and other elements on the page.

Condition

To keep paper in the pressroom for a few hours or days before printing so that its moisture level and temperature equal that in the pressroom. Also called cure, mature and season.

Continuous-tone Copy

All photographs and those illustrations having a range of shades not made up of dots, as compared to line copy or halftones.

Contrast

The degree of tones in an image ranging from highlight to shadow.

Cover

Thick paper that protects a publication and advertises its title. Parts of covers are often described as follows: Cover 1 = outside front; Cover 2 = inside front; Cover 3 = inside back, Cover 4 = outside back.

Coverage

Extent to which ink covers the surface of a substrate. Ink coverage is usually expressed as light, medium or heavy.

Cover Paper

Category of thick paper used for products such as posters, menus, folders and covers of paperback books.

Crash

Coarse cloth embedded in the glue along the spine of a book to increase strength of binding. Also called gauze, mull and scrim.

Creep

Phenomenon of middle pages of a folded signature extending slightly beyond outside pages. Also called feathering, outpush, push out and thrust.

See also Shingling.

Crop Marks

Lines near the edges of an image indicating portions to be reproduced. Also called cut marks and tick marks.

Crossover

Type or art that continues from one page of a book or magazine across the gutter to the opposite page. Also called bridge, gutter bleed and gutter jump.

Cure

1. To dry inks, varnishes or other coatings after printing to ensure good adhesion and prevent setoff.

2. To acclimatise paper in the press room prior to printing.

Customer Complaint

Complaint raised by customer regarding poor product or inadequate service received from Parliamentary Press. Registered into Quality Database and investigated by relevant Head of Department. Outcome is fed back to source.

Customer Copy

The data (text, images etc), which form the content of a publication as presented to the press for production. Customer Copy may be supplied in manuscript, hard copy or electronic formats. Also called copy and Author's Copy.

Customer Service Executive (CSE)

Member of the Planning team who co-ordinates projects and keeps customers informed.

Cut-off

Circumference of the impression cylinder of a web press, therefore also the length of the printed sheet that the press cuts from the roll of paper.

Cut Sheet

Generic name given to the OCE 4040 cut sheet digital press.

Cut Sizes

Paper sizes used with office machines and small presses.

Cutting Machine

A machine that cuts stacks of paper to desired sizes. The machine can also be used in scoring or creasing.

Cutting Die

Usually a custom ordered item to trim specific and unusual sized printing projects.

Cyan

One of the four process colours. Also called process blue.

Print Glossary

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