10-point C1S

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C1S is a printing industry acronym for “coated one side.” (Likewise, C2S means “coated two sides.”) 10-point C1S refers to coatings applied to paper by the paper manufacturer, usually sizing between .008″ and .018″ thickness. Coatings are applied to the paper before your printer receives the paper and prints on it. Thus, it is not to be confused with various coatings your printer may apply after the printing process, such as UV or aqueous coatings, varnishes or laminates.