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Paper

Printing paper and industry terms.

Contributors in Paper

Paper

Conditioning

Printing & publishing; Paper

Allowing paper to adjust itself to the temperature and humidity of the printing plant prior to use.

Sulphate

Printing & publishing; Paper

Alkaline process of cooking pulp also known as the kraft process. Wood chips are cooked to a high brightness without fibre degradation in a substance of sodium sulphate and sodium sulfide.

Registration

Printing & publishing; Paper

Alignment of one element of a form in relation to another. Also, alignment of printed images upon the same sheet of paper.

Four-sided trim (trim 4)

Printing & publishing; Paper

After the job is printed and folded, a trim will be taken off all four sides to remove any reference or registration marks and give a clean edge to the pile of sheets.

Size or sizing

Printing & publishing; Paper

Additive substances applied to the paper either internally through the beater or as a coating that improves printing qualities and resistance to liquids. Commonly used sizes are starch and latex.

Fibrillation

Printing & publishing; Paper

Act of loosening the fibrillae during the mechanical process of beating the fibres in preparation for papermaking.

Back cylinder pressure

Printing & publishing; Paper

Additional pressure applied through the impression cylinder assisting the image transfer to the press sheet.

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