Patent ID: 6181903
Filing Date: 2001-01-30
Classification: G03G

Abstract:
A developing roller cleaning apparatus for a liquid printer comprising:a cleaning brush rotating in contact with a developing roller so that developer adhering to an outer circumferential surface of said developing roller can be cleaned;a blade holder; anda blade installed to be bent as said blade contacts said developing roller for removing foreign material back-plated on said developing roller after being cleaned by said cleaning brush, one end of said blade being coupled to said blade holder and the other end thereof contacting the outer circumferential surface of said developing roller,wherein said blade has a blade interference .delta.=(R--r), a blade leading edge pressure P, and a cleaning angle .theta..sub.2 satisfying the below conditions of1.0 mm.ltorsim..delta..ltorsim.1.5 mm 10 g/cm.ltorsim.P.ltorsim.20 g/cm 5.degree..ltorsim..theta..sub.2.ltorsim.20.degree.wherein R denotes a radius of said developing roller and r denotes a distance between a center of said developing roller and a leading edge of said blade assuming that an elastic bias applied to said blade installed to be bent is removed.