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Browse by Category: Main > Electrical & Energy
Class Information
Number: 399/314
Name: Electrophotography > Image formation > Transfer > Electrostatic > Having applied bias
Description: Subject matter wherein a specific voltage or current is used to cause the transfer.










Patents under this class:
1 2 3 4 5

Patent Number Title Of Patent Date Issued
8682190 Image forming apparatus Mar. 25, 2014
8682197 High voltage power supplying apparatus and image forming apparatus having the same Mar. 25, 2014
8670687 Image forming member with current flowing to transfer belt Mar. 11, 2014
8606133 Image forming apparatus Dec. 10, 2013
8532532 Image forming apparatus having a controllable drive coupling Sep. 10, 2013
8472824 Image forming apparatus employing two cleaning blades Jun. 25, 2013
8463149 Image forming apparatus Jun. 11, 2013
8457517 Image forming apparatus and transfer roller bias system Jun. 4, 2013
8447217 Image forming apparatus May. 21, 2013
8422900 Apparatus and method of controlling an image forming apparatus Apr. 16, 2013
8374518 Image forming apparatus and image forming method Feb. 12, 2013
8358955 Transfer device and image forming apparatus Jan. 22, 2013
8326195 Transfer device and image forming apparatus Dec. 4, 2012
8326193 Image forming apparatus Dec. 4, 2012
8326162 Belt tracking using two edge sensors Dec. 4, 2012
8315547 Image forming apparatus and control method thereof Nov. 20, 2012
8311430 Transfer device and image forming apparatus Nov. 13, 2012
8295724 Image forming apparatus Oct. 23, 2012
8249490 Image transfer device and image forming apparatus Aug. 21, 2012
8165484 Image forming apparatus with control of transfer voltage Apr. 24, 2012
8126342 System for tailoring a transfer nip electric field for enhanced toner transfer in diverse environments Feb. 28, 2012
8099011 Image forming apparatus Jan. 17, 2012
8081910 Image forming apparatus and image forming method Dec. 20, 2011
8068756 Image forming apparatus and control method Nov. 29, 2011
8023874 Image forming apparatus having transfer bias applying section and image forming method having the same for transferring toner image Sep. 20, 2011
8019246 Image forming apparatus Sep. 13, 2011
8010005 Image forming apparatus Aug. 30, 2011
7965959 Transfer apparatus and image forming device Jun. 21, 2011
7925176 Transfer voltage control method of image forming apparatus Apr. 12, 2011
7869751 Transfer device and image forming apparatus Jan. 11, 2011
7865097 Image forming apparatus and control method Jan. 4, 2011
7761020 Image forming apparatus utilizing cylindrical toner particles Jul. 20, 2010
7693437 Image forming apparatus Apr. 6, 2010
7657198 Methods for transfering toner in direct transfer image forming Feb. 2, 2010
7639961 Image forming apparatus with means of preventing backside soil of transfer material Dec. 29, 2009
7593677 Image forming apparatus with decreased potential difference between a belt member transfer portion and a belt member bending portion Sep. 22, 2009
7486900 Image forming apparatus capable of removing toner from a toner removing member Feb. 3, 2009
7447454 Image forming apparatus and process cartridge Nov. 4, 2008
7418218 Conductive backer brush for electrostatic brush cleaning of a belt without a ground layer Aug. 26, 2008
7379694 Belt transfer apparatus and image forming device May. 27, 2008
7302217 Image forming apparatus and transfer apparatus employing endless belt Nov. 27, 2007
7233750 Image forming apparatus with control of transfer charge Jun. 19, 2007
7221883 Electrostatic image transfer device using intermediate transfer belt having simplified image transfer voltage requirements May. 22, 2007
7177562 Transfer power supply apparatus of an image forming machine Feb. 13, 2007
7130568 Image forming apparatus which presents faulty image when toner image on image bearing member is transferred to transferring medium Oct. 31, 2006
7110685 Transfer power supply apparatus of an image forming machine Sep. 19, 2006
7003238 Intermediate image transfer device for a color image forming apparatus Feb. 21, 2006
6990309 Method and apparatus for image forming performing improved cleaning and discharging operation on image forming associated members Jan. 24, 2006
6970676 Imaging forming apparatus Nov. 29, 2005
6963701 Image forming device with bias applying power source for transfer roller Nov. 8, 2005

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