Patent ID: 8047538
Filing Date: 2011-11-01
Classification: B65H,G03G

Abstract:
1. A sheet transport apparatus comprising: a registration roller that transports a sheet in a predetermined sheet transportation direction, a sheet transport path including a curved portion that is curved at an upstream side of the registration roller in the sheet transportation direction, a first optical sensor that detects presence or absence of a sheet at the curved portion of the sheet transport path, a second sensor that detects presence or absence of a sheet at an upstream side of the first optical sensor in the sheet transportation direction, and a sheet transportation control unit that stops driving of the registration roller after an elapse of a predetermined transportation time from detection by the first optical sensor of sheet absence following sheet presence of a sheet transported by the registration roller, wherein upon predetermined sheet detection by the second sensor, the sheet transportation control unit does not perform control based on sheet detection by the first optical sensor during a predetermined detection restricted time Ts