Sheet feeding or delivering – Feeding – With means to align sheet
Reexamination Certificate
2004-10-18
2009-11-17
Mackey, Patrick H (Department: 3653)
Sheet feeding or delivering
Feeding
With means to align sheet
C271S258010, C271S265010, C250S559360
Reexamination Certificate
active
07618039
ABSTRACT:
In a sheet detecting sensor, light emitted from a linear light emitting element is blocked by a sheet from entering a light receiving element which is located immediately below the sheet. Only light receiving elements which are not immediately below the sheet, receive light from the linear light emitting element. Light passing through a point in a vicinity of an edge portion of the sheet enters only a light receiving element which is located immediately below that point, but not the other light receiving elements. In addition, even when the position of a sheet varies vertically, the same light receiving element receives light passing through the same point in a vicinity of the edge portion of the sheet. Therefore, even when the position of a sheet varies vertically, the edge position of the sheet can be accurately detected.
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Fujimoto Osamu
Mandai Hidenobu
Saka Masaki
Tsuji Masaru
Birch & Stewart Kolasch & Birch, LLP
Mackey Patrick H
Severson Jeremy
Sharp Kabushiki Kaisha
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