Is a
Patent attributes
Current Assignee
Patent Jurisdiction
Patent Number
Date of Patent
February 27, 2007
Patent Application Number
10942899
Date Filed
September 17, 2004
Patent Primary Examiner
Patent abstract
The present invention provides a detector that brings a cleaning blade made from elastomer in contact with a photoconductor to observe vibrations of the cleaning blade or a supporting member for the cleaning blade and calculates an index value based upon a normal condition using multi-dimensional data for each frequency obtained by Fourier transform of the vibrations as signals, thereby detecting abnormality of a condition of contact of the cleaning blade with the photoconductor such as the presence of adhesion material or damage to the photoconductor.
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