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US 6,324,373 B1Granted
Pre-transfer system in an image forming apparatus
AssigneeSamsung Electronics Co., Ltd.
InventorYong-Hwan Park
Life of this patent
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AssigneeSamsung Electronics Co., Ltd.
InventorYong-Hwan Park
Estimating the term…
The present invention relates to a pre-transfer system of an image forming apparatus wherein the pre-transfer efficiency is enhanced by a pre-transfer lamp (“PTL”) being placed upstream of the delivering path of a recording paper and the light emitted from the PTL being directly scanned to a photosensitive drum. The PTL is placed upstream of the delivering path of the paper, a lens is disposed opposite to a light emitting portion of the PTL, the lens spreading the light emitted from the PTL in the scanning direction of the photosensitive drum and, at the same time, collecting the light in a direction perpendicular to the scanning direction, and a light guide member is disposed at an angle with respect to the lens and the photosensitive drum, the light guide member guiding the light spread and collected by the lens to the surface of the photosensitive drum.
An image forming apparatus, comprising an electrification roller electrifying a surface of a photosensitive drum, a laser scan unit forming an electrostatic latent image on the surface of the photosensitive drum, a developing machine making the electrostatic latent image visible, a pre-transfer lamp reducing the potential of toner coated on the photosensitive drum, a transfer roller transferring the image to a recording paper, and a fixer fixing the image transferred to the recording paper;
An image forming apparatus, comprising an electrification roller electrifying a surface of a photosensitive drum, a laser scan unit forming an electrostatic latent image on the surface of the photosensitive drum, a developing machine making the electrostatic latent image visible, a pre-transfer lamp reducing the potential of toner coated on the photosensitive drum, a transfer roller transferring the image to a recording paper, and a fixer fixing the image transferred to the recording paper;
An image forming apparatus, comprising:
The image forming apparatus of claim 13, said lens having an elongate flat face facing the first light-emitting diode and a semi-cylindrical face opposite the flat face.
An image forming apparatus, comprising:
Dependencies are inferred from the claim text.