Cleaning device for collecting toner on a surface of an image forming apparatus
AssigneeKonica Minolta Business Technologies, Inc.
InventorsTomohide Mori, Hidetoshi Noguchi, Hideo Yamaki, Yasunori Nakayama, Yasuo Tanaka, Satoru Shibuya, Hideji Higashimura
Life of this patent
Estimating the term…
Abstract
A cleaning device is provided with a conductive fur brush kept in contact with a transfer belt, a conductive brush kept in contact with the transfer belt upstream of the fur brush in the feed direction, and a single of constant-current d.c. power supply. The fur brush is connected to the constant-current d.c. power supply, and the conductive brush is grounded. A current flows from the constant-current d.c. power supply via the transfer belt to the conductive brush.
Claims8
A cleaning device for collecting toner on a surface of an image bearing body, comprising:
- a rotary member having electrical conductivity and being rotatively driven while being in contact with the surface of the image bearing body;
- a conductive member which makes contact with the image bearing body on an upstream side of the rotary member in a conveyance direction of the image bearing body;
- and
- a single d.c. power supply to which one of the rotary member and the conductive member is connected, the other being grounded, and which generates a d.c. current that flows via the image bearing body between the rotary member and the conductive member, whereby a first electric field in such a direction as to exert a force for adsorbing the toner of a normal charging polarity to the rotary member is generated between the rotary member and the image bearing body while a second electric field in a direction reverse to the first electric field is generated between the conductive member and the image bearing body.
Dependencies are inferred from the claim text.