Glossary

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Ragged left
In typesetting, type that is justified on the right margin and ragged on the left.
Ragged right
In typesetting, the type that is justified on the left margin and ragged on the right.
Rain Forest
Areas of evergreen forest receiving over 150 inches of rain a year. Rain forests play a critical role in regulating the worldÕs climate. We have already destroyed half of all rain forests, and at the current rate of destruction, the rest could be gone in as little as 50 years.
Raster image processor(RIP)
In computer imaging, the computerised process that results in an electronic bit map, which indicates every spot position on a page in preparation for an actual print out.
Ream
Five hundred sheets of paper.
Recyclable
Used to describe a product which has the potential to be recycled.
Recycled paper
Recycled paper contains fibres that have previously been made into paper that has been despatched from the paper mill. The percentage and type of recycled fibre may be specified in the name or product specification. Common classifications for recycled fibres include post consummer, (returned from households offices or shops), pre consumer, (printers and converters waste), or rejected material returned by the customer. Specification for the use of recycled paper may include a minimum percentage of post consumer waste in the furnish of the product.
Recycling
Waste materials used in such a way that new materials can be manufactured from it.
Reducers
In printing inks, varnishes, solvents, oily or greasy compounds used to reduce the consistency for printing.
Reflection copy
In photography, illustrative copy that is viewed and must be photographed by light reflected from its surface. Examples are photographs, drawings etc.
Register
In printing, fitting of two or more printing images in exact alignment with each other.
Register marks
Crosses or other targets applied to original copy prior to photography. Used for positioning films in register, or for register of two or more colours in process printing.
Relative humidity (RH)
The amount of water vapour present in the atmosphere expressed as a percentage of the maximum that could be present at the same temperature and pressure.
Reprography
Copying and duplicating.
Resolution
In electronic imaging, the quantification of print out quality using the number of spots per inch.
Respi screen
A contact screen with 110-line screen ruling in the highlights and 220-line in the middle tones and shadows to produce a longer scale and smoother gradation of tones in the light areas of the copy.
Retrofit
Backward integration of advanced capability into a device or program not originally intended for that purpose.
RGB
Red, Green, Blue – additive primary colours.
Right-angle fold
In binding, a term used for two or more folds that are at 90 degree angles to each other.
Roller stripping
In lithography, a term denoting that the ink does not adhere to the metal ink rollers on a press.
Rub-proof
In printing, ink that has reached maximum dryness and does not mar with normal abrasion.
Run-around
In composition, the term describing type set to fit around a picture or other element of the design.
Runability
Paper properties that affect the ability of the paper to run on the press.
Running head
A headline or title repeated at the top of each page.