(R) Recycled Fibre
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Fibres from collected waste paper used in the production of paper based on recycled fibres.(See also virgin fibre and de-inking).
(R) Renewable Energy
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Energy produced from wind, solar energy, wood-based fuels and hydrogen power.
(R) RFID
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see Radio Frequency Identification.
(R) RGB
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The colours, red, green and blue, that make up an additive form of CMYK.
(R) Radio Frequency Identification (RFID)
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Allows chips, or printed circuits, to be inserted in products as a track and trace technology. Gaining an increasing use in packaging.
(R) Raster Image Processor (RIP)
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A device or programme that interprets a page description language containing a file’s instructions for printing. The RIP converts instructions to dot patterns, so that the printer or press can create a document.
(R) Real Art
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A generic term given to woodfree coated papers, which has traditionally referred to papers with a highly polished surface in the upper quality bracket. Today, the term is less used because of the introduction of more categories in the sector. However, Real Art is still used for those woodfree coated papers, gloss or matt, which are considered to be of the very highest quality.
(R) Ream
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Five hundred (500) sheets of paper of the same quality, size, and grammage. In earlier times, a ream could also consist of 480 or 516 sheets.
(R) Recyclability
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The only obstacles to the recyclability of fine paper are certain finishes such as UV lacquering, laminating, plastic coating, pulp dyeing, self-adhesive glues, scratch finishes, plastic windows in envelopes, flexographic printing, and some forms of inkjet.
(R) Recycled paper
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Paper made all or in part from recycled pulp.
(R) Recycled pulp/fibre
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Pulp made from waste paper and board and reused to make paper. The quality of the fibres deteriorates with recycling, so paper cannot be recycled endlessly and some virgin fibre must be introduced to the materials stream.
(R) Reel
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A continuous length of paper wound on a core, irrespective of diameter, width or weight. Reels may thus be rewound into smaller reels or slit into coils.
(R) Reel to reel Open info
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A machine on which the material is supplied in reel form, and comes off again in reel form.
(R) Register
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The accurate positioning of images on a sheet relative to one another.
(R) Register marks
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A set of fine line crosses or other suitable devices added to original artwork to provide reference points for accurate subsequent multi-colour printing or finishing processes.
(R) Relative humidity (RH)
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Quotient of the amount of moisture in air and the amount that would saturate it at the same temperature and pressure, expressed as a percentage. Optimum printing press conditions are 20°C and 55 to 65% RH.
(R) Relief
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Printing method using a raised image, eg letterpress.
(R) Remote proofing
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llows print companies to send electronic files to a calibrated printer at a customer site, which are then printed as proofs.
(R) Renewable resources
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Forests, solar, wind and water and bio energy.
(R) Report generator
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An element within computer software that dictates the position and text of information to be produced by the output printer device on paper stationery. The computer programme – which is the report generator – determines how the form is to be designed.
(R) Repro
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Pre-press camera work, scanning and make up, whether film or electronic files.
(R) Resolution
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Number of dots or pixels per unit length. Usually expressed as units per centimetre or inch.
(R) Reversed out printing
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Text is normally printed directly onto paper. The process of ‘reversing out’ is to print a solid block of colour while leaving the text to be read as unprinted areas on the paper, ie ‘white’ text being read on a background of solid colour – seen often in titles.
(R) Reverse side printing
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Printing on the underside of a leaf of paper.
(R) Rigidity
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The rigidity of a paper or board is measured using a Taber stiffness tester. This operates by measuring the force required to bend a strip of the material to an angle of 15°. The greater the force required, the more rigid the material and the higher the value.
(R) Run length
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The number of copies to be printed.
(R) Runnability
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The ability of a paper or board to perform on a printing press or on converting machinery without problems.
