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Ragged - Type that is not justified on the right or left side.

Rag Paper - Paper containing a minimum of 25% rag or cotton fiber pulp.

Rainbow - 3Mï¿½s digital, high resolution, thermal dye sublimation, desktop color proofing system.

Rainbow Fountain - Technique of putting ink colors next to each other in the same ink fountain and oscillating the ink rollers to make the colors merge where they touch, producing a rainbow effect.

Random Proof - A color proof consisting of many images ganged on one substrate and randomly positioned with no relation to the final page imposition. This is a cost-effective way to verify the correctness of completed scans prior to further stripping and color correction work. Also called scatter proof.

Raster - To convert mathematical and digital information into a series of dots by an imagesetter or recorder as digital data that will be used for output.

RC Paper - The photosensitive resin-coated paper generally used to record the output of typesetters and imagesetters.

Readerï¿½s Spread - Keylines of two facing pages in correct numerical order, e.g., pages 2 and 3.

Ream - 500 sheets of printing paper. Stacks and skids of paper often include slips of paper (ream markers) marking the division of the stack into reams.

Recto Page - The right-hand or odd-numbered page of an open book or spread. Recycled Paper - New paper made entirely or in part from old paper.

Reflection Copy - Any opaque color artwork submitted for reproduction such as photos, sketches or paintings.

Reflective Copy - Any painting, artwork or photograph (not transparencies) that reflects light off its surface.

Register - The fitting of two or more printing images on the same paper in exact alignment with each other.

Register Marks - Crosses or some other design that are pasted outside your keyline on the board. Everything done to the job through printing must have these marks to prevent the separations, film or plates from being misaligned or out of register.

Registration - The correct positioning of one color over another during the printing process.

Relief Printing - Printing method whose image carriers are surfaces with two levels having inked areas higher than non-inked areas. Types include block printing, flexography and letterpress.

Remote proofing - Digital transmission of a proof to a remote office or customer location for output and evaluation at the remote site.

Repeatability - The precision with which a device can position an image, usually measured in microns. For example, a capstan imagesetter has low repeatability compared with a drum imagesetter which is more accurate in its operation.

Replicate - In the manufacturing of a CD-ROM, to mold the actual disc by injecting molten polycarbonate into the mold cavity (stamper), then quickly cool the plastic to harden it, a process which takes less than 15 seconds. After replication of the disc, art is printed onto the non-data side of the disc via silk-screen or offset printing.

Reprint - An ad which is printed and then sent to a magazine for insertion. Also refers to a reprint of ads supplied by the publication before the publication is issued.

Resolution - Sharpness of an image. Also quantification of laser print quality using number of dots per inch.

Retouch - To correct flaws in an image or make design changes.

Reverse - Type, graphic or illustration produced by printing ink around its outline, thus allowing the underlying color or paper to show through and form the image. The image "reverses out" of the ink color. Also called knock out or liftout.

RGB - Red, green and blue. The additive primaries which are used in video monitors.

Right-angle Fold - A folding succession in which each succeeding fold is made at right angles to the preceding one.

Right Reading - Copy that reads correctly in the language in which it is written. Also describes a photo whose orientation looks like the original image.

RIP - Abbreviation for raster image processing, a hardware and/or software system that translates page description command into bitmaps for output to a laser printer or imagesetter.

Rosette Pattern - The desirable minute circle of dots that is formed when two or more process color screens are overprinted at their appropriate angle, screen ruling and dot shape.

RRED - Right reading, emulsion side down.

Rub Proof - Ink that has reached its maximum dryness and does not mar with normal abrasion.

Rubylith - A red acetate masking film used in stripping to make an opening.

Rule - A straight line of any thickness or a line used as a graphic element to separate or organize copy.

Run Around - Type that is made to fit around a picture of art.

Run of Paper (ROP) - Printing full color in newspaper but using the same paper and press as the balance of the newspaper.