Patent ID: 6744993
Filing Date: 2004-06-01
Classification: B65H,G03G

Abstract:
A sheet winding detecting device comprising:conveying means for conveying a sheet while rotating; voltage applying means for applying voltage to said conveying means; voltage detecting means for detecting voltage related to said conveying means; sheet winding detecting means for detecting whether the sheet is wound around said conveying means according to the voltage detected by said voltage detecting means; and function status detecting means for detecting whether said sheet winding detecting means is malfunctioning, wherein when said function status detecting means detects that said sheet winding detecting means is not malfunctioning, said voltage applying means applies voltage to said conveying means, and said sheet winding detecting means detects whether the sheet is wound around said conveying means according to the voltage applied by said voltage applying means and the detected voltage, wherein when said function status detecting means detects that said sheet winding detecting means is malfunctioning, said voltage applying means omits to apply voltage to said conveying means.