Patent ID: 6626107
Filing Date: 2003-09-30
Classification: B41F,B41P

Abstract:
A cleaning apparatus comprising:a cleaning web pressed against a rotary member and adapted to clean an outer surface of said rotary member; a supply shaft around which said cleaning web before cleaning is wound and which rotates in accordance with supply operation of said cleaning web to the outer surface of said rotary member; a take-up shaft rotatably driven to take up said cleaning web supplied from said supply shaft to the outer surface of said rotary member; signal output means for outputting a signal corresponding to rotation of said supply shaft; and detection means for detecting that said cleaning web is caught in said rotary member on the basis of a state of the signal output from said signal output means, wherein said signal output means outputs the signal an output state of which changes periodically in accordance with rotation of said supply shaft, wherein said apparatus further comprises storage means for storing the output state of the signal supplied from said signal output means in a state wherein said supply shaft is stopped when cleaning is ended, and said detection means comprises comparing means for comparing the output state of the signal, obtained when cleaning is ended, stored by said storage means with an output state of the signal in a wait mode after cleaning is ended, and outputting a catching detection signal indicating that said cleaning web is caught in the rotary member when the output states differ.