Is a
Patent attributes
Current Assignee
Patent Jurisdiction
Patent Number
Date of Patent
June 7, 2011
Patent Application Number
11740464
Date Filed
April 26, 2007
Patent Citations Received
Patent Primary Examiner
Patent abstract
Abnormal detecting means 112 for detecting that an electrically conductive foreign substance has migrated into a charging device 1 is provided, and whether or the foreign substance has migrated is judged from the detection result of the abnormal detecting means 112.
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