Patent ID: 6195518
Filing Date: 2001-02-27
Classification: G03G

Abstract:
A web-tracking control apparatus for controlling the movement of a flexible web traveling about an adjustable support member, said web-tracking control apparatus comprising:at least one web edge contacting member contacting a marginal edge of said flexible web;a pivot assembly operatively associated with said at least one web edge contacting member while said web edge contacting member is in contact with a marginal edge of said flexible web, said pivot assembly being capable of deflecting a predetermined amount proportional to the force of said flexible web on said at least one edge contacting member;a cross-track force monitoring mechanism operatively associated with said pivot assembly, said cross-track force monitoring mechanism including a load cell or force transducer for producing a signal representative of deflection of said pivot assembly; andan electronic circuit responsive to said pivot assembly deflection signal to provide a correction signal for causing adjustment of the position of said web support member so that said web support supports said flexible web for movement without any substantially cross-track force being exerted on said at least one web edge contacting member.