Patent ID: 7062218
Filing Date: 2006-06-13
Classification: G03G

Abstract:
1. A quad-roll curl control apparatus comprising: first, second, third, and fourth rolls configured to form first and second nips; the first, second, third, and fourth rolls also configured in a substantially linear formation; the first nip comprising the first and third rolls; the second nip comprising the second and fourth rolls; respective bearings supporting ends of the first and second rolls; the third and fourth rolls each having a substantially uncompressible surface; the first and second rolls each having a compressible surface into which the third and fourth rolls selectively penetrate, respectively; a curl adjuster connected to the first and second nips to control the selective penetration of the first and second roll compressible surfaces by the third and fourth roll substantially uncompressible surfaces; and a gate member in communication with the first and second nips, the gate member sending sheets to one of the first and second nips for application of respective types of curl.