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AssigneeHitachi Koki Co., Ltd.
InventorsAkihiko Yamazaki, Shuho Yokokawa, Kunitomo Takahashi, Youji Hirose, Hidenori Iwanaga
Estimating the term…
An electrophotographic apparatus for transferring a toner image formed on a photosensitive drum onto a sheet of paper and melt-fixing the toner image on the sheet of paper, having a paper detector at a predetermined position in a transporting path of the sheet of paper, the paper detector being composed of a light projector, a reflecting member for reflecting a primary light beam emitted from the light projector and a light receiver for sensing a secondary light beam reflected by the reflecting member, to prevent erroneous detections the light receiver is placed at a position relatively displaced with respect to a position where the light projector is located so that the primary light beam and the secondary light beam have tilting components to both a plane parallel to a transporting plane of the sheet of paper and a plane vertical to the transporting plane.
An electrophotographic apparatus for transferring a toner image formed on a photosensitive drum onto a sheet of paper and melt-fixing said toner image on the sheet of paper, having a paper detector at a predetermined position in a transporting path of said sheet of paper, said paper detector comprising a light projector, a reflecting member for reflecting a primary light beam emitted from said light projector and a light receiver for sensing a secondary light beam reflected by said reflecting member, wherein said light receiver is placed at a position relatively displaced with respect to a position where said light projector is located so that said primary light beam and said secondary light beam have tilting components to both a plane parallel to a transporting plane of said sheet of paper and a plane transverse to said transporting plane.
A paper detector for use in an electrophotographic apparatus comprising a light projector;
A paper detecting method for use in an electrophotographic apparatus having a paper detector located at a predetermined position in a transporting path of a sheet of paper, said paper detector being composed of a light projector, a reflecting member for reflecting a primary light beam emitted from said light projector and a light receiver for sensing a secondary light beam reflected by said reflecting member, wherein the paper detecting method comprises the steps of:
Dependencies are inferred from the claim text.