A - Human Necessities – 46 – D
Patent
A - Human Necessities
46
D
300/10, 314/38
A46D 1/04 (2006.01) A46D 1/00 (2006.01) G03G 21/00 (2006.01)
Patent
CA 1115748
ELECTROPHOTOGRAPHIC TONER REMOVAL BRUSH AND METHOD OF MAKING SAME ABSTRACT A process for treating a pile material which is ultimately to be made into a toner removal brush used in association with electrophotographic printing which comprises treating the pile substrate material with a saturated aqueous solution of a chemical mixture comprising at various times a surfactant, an alkali metal salt, a source of borate ions and an optical dye, withdrawing excess solution by mechanical means and simultaneously orienting the pile, and preferably allowing the still wet material to dry at ambient or elevated temperature, forming an elongated pile-covered tubular structure with the resulting dried pile material, sizing the tube to desired lengths if necessary, subjecting the dried pile material to a further wetting either with water alone or a saturated aqueous solution of the same chemical mixture above defined, and then subjecting the pile-covered tube to a centrifugal force which resultingly "explodes" the nap to form a brush with uniquely superior toner removal properties, and the brush nap made by this method.
262881
Gowling Lafleur Henderson Llp
Ikon Technology Corp.
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