Belt transfer device and image forming apparatus having the same
AssigneeSamsung Electronics Co., Ltd.
InventorsJoong-Gwang Shin, Jean-Man Sur
Life of this patent
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Abstract
A belt transfer device prevents the dragging of an image during a transfer process that transfers an image from a photosensitive body onto a transfer belt. The belt transfer device includes a transfer belt that contacts the surface of a photosensitive body, and at least one belt pressing member installed in the front and/or rear of a contact portion (that is, a transfer nip) between the transfer belt and the photosensitive body. The at least one belt pressing member extends the length of the transfer nip, thereby preventing image dragging.
Claims20
A belt transfer device comprising:
- a transfer belt following an endless loop in contact with a photosensitive body;
- and
- at least one belt pressing member for pressing the transfer belt to increase the length of a transfer nip between the photosensitive body and the transfer belt.
An image forming apparatus, comprising:
- a plurality of photosensitive bodies for having electrostatic latent images formed thereon;
- a plurality of developing units for developing the electrostatic latent images formed on the photosensitive bodies;
- a transfer belt following an endless loop in contact with the photosensitive bodies to allow the images on the photosensitive bodies to be transferred onto the transfer belt;
- a plurality of transfer rollers disposed opposite to the photosensitive bodies;
- and
- a plurality of belt pressing members installed in front of and/or behind the transfer rollers for pressing the transfer belt to increase the length of a transfer nip between each of the photosensitive bodies and the transfer belt.
An image forming apparatus, comprising:
- a photosensitive body;
- a developing unit corresponding to the photosensitive body, the developing unit developing electrostatic latent images formed on the photosensitive body;
- a transfer belt that contacts the photosensitive body to allow developed images on the photosensitive body to be transferred onto the transfer belt;
- a transfer roller disposed opposite to the photosensitive body;
- and
- at least one belt pressing member installed proximate to the transfer roller to increase the length of a transfer nip between the photosensitive body and the transfer belt.
Dependencies are inferred from the claim text.