Page 136 - 2015 PIM Buyers Guide .pdf

Graphic Communications Terms Glossary

Raster RGB
An image composed of a set of horizontal scan lines that are Red, green and blue. The additive primaries which are used in
formed sequentially by writing each line following the previous line, monitors, and therefore, websites.
particularly on a television screen or computer monitor. See also: Right-angle Fold
bitmap. A folding succession in which each succeeding fold is made at right
Raster Image Processor (RIP) angles to the preceding one.
The device that interprets all of the page layout information for the ROM
marking engine of the imagesetter or platesetter. PostScript or another Read-Only Memory, a storage device whose contents cannot be
page description language serves as an interface between the page altered.
layout workstation and the RIP. Rosette Pattern
Rasterization The desirable minute circle of dots that is formed when two or more
The process of converting mathematical and digital information into a process color screens are overprinted at their appropriate angle, screen
series of variable-density pixels. ruling and dot shape.
Reader’s Spread Rotogravure
Layout of two facing pages in correct numerical order, e.g., pages A printing process that uses a cylinder as an image carrier. Image
2 and 3. areas are etched below nonimage area in the form of tiny sunken
Ream cells. The cylinder is immersed in ink, and the excess ink is scraped
500 sheets of printing paper. Stacks and skids of paper often include off by a blade. When the substrate contacts the printing cylinder, ink
slips of paper (ream markers) marking the division of the stack into transfers, forming the image.
reams. Rub Proof
Recto Page Ink that has reached its maximum dryness and does not mar with
The right-hand or odd-numbered page of an open book or spread. normal abrasion.
Reflection Copy Rule
Any opaque color artwork submitted for reproduction such as photos, A straight line of any thickness or a line used as a graphic element to
sketches or paintings. separate or organize copy.
Reflective Copy Run Around
Any painting, artwork or photograph (not transparencies) that reflects When type is made to fit around a picture in a document.
light off its surface. Run of Paper (ROP)
Register Printing full color in newspaper but using the same paper and press as
The fitting of two or more printing images on the same paper in exact the balance of the newspaper.
alignment with each other.
Register Marks S
Crosses or some other design that are outside the layout of a print job
to indicate where the live area is. These marks prevent separations, Saddle-sewn
film or plates from being misaligned or out of register. Especially A form of binding that stitches thread through the gutter fold of a
useful with white backgrounds or bleeds. publication.
Registration Saddle-stitch
Correct positioning of one color over another during the printing A form of binding that uses staple-shaped wires through the gutter
process. fold; also called saddle-wired.
Relief Printing Safelight
Printing method whose image carriers are surfaces with two levels A lamp for use in the darkroom that gives light of a color that will not
having inked areas higher than non-inked areas. Types include block affect the photographic material within a reasonable time. Different
printing, flexography and letterpress. photographic materials require different safelight filters.
Remote Proofing Sans Serif Type
Digital transmission of a proof to a remote office or customer location Any type style that does not have cross strokes on the ends of the
for output and evaluation at the remote site. letters, as in Arial.
Resolution Scanner
(1) The density of dots or pixels on a page or display usually measured Electronic device used to digitize an image.
in dots per inch. The higher the resolution, the smoother the Score
appearance of text or graphics. (2) The precision with which an To compress paper along a straight line so it folds more easily and
optical, photographic, or photomechanical system can render visual accurately.
image detail. Resolution is a measure of image sharpness or the Screen Ruling
performance of an optical system. It is expressed in lines per inch or Sometimes confused with resolution, screen ruling is the number of
millimeter. printing dots per millimeter or per inch on the exposed film. The
Reverse screen ruling is a critical factor in determining the resolution need.
Type, graphic or illustration produced by printing ink around its The finer the screen ruling, the higher the resolution needs to be, due
outline, thus allowing the underlying color or paper to show through to the amount of information required to generate the printing dots.
and form the image. The image “reverses out” of the ink color. Also
called knock out or liftout.

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