WRINKLE CONTROL ROLLS
Original Publication Date: 1983-Aug-31
Included in the Prior Art Database: 2004-Apr-04
Xerox Disclosure Journal
This disclosure relates to minimizing paper wrinkling when toner images are fused to a copy substrate by passing them through a roll fuser. Paper wrinkle occurs due to moisture induced waviness when the waviness becomes too large to be accommodated by the roll fuser. Accordingly, by reducing the degree of waviness of the paper prior to its entry into the fuser nip the tendency for paper wrinkling can be reduced. It is desirable from a paper handling standpoint to locate the wrinkle control device after the nip. This is disclosed in the figure, a roll fuser comprising rolls 10 and 12 through which copy sheets 14 carrying electrostatically adhered powder images are passed for fusing the powder images to the sheets. A wrinkle control device in the form of a roll 16 is positioned in the post nip area of the fuser. The roll 16 is provided with a spiralled protusion on each side thereof which cooperate to stretch the paper outwardly in the direction perpendicular to its direction of movement.