The term 'COPIER ADDITIVE' can be broken down into six crossword solutions: TONER (5 letters), TONERS (6 letters), RICOH (5 letters), LEGAL (5 letters), MIMEO (5 letters), and MITA (4 letters). TONER is a powder used in laser printers and photocopiers to form the printed text and images on the paper. It is usually made of plastic particles, carbon, and iron oxide. Ricoh is a Japanese company that manufactures office equipment such as photocopiers, printers, and fax machines. LEGAL is a type of paper size commonly used for LEGAL documents. Mimeo is a brand of photocopier manufactured by the Japanese company Mita. Finally, Mita is a Japanese company that manufactures office equipment such as photocopiers, printers, and fax machines.