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Browse by Category: Main > Electrical & Energy
Class Information
Number: 399/175
Name: Electrophotography > Image formation > Charging > Contact > Brush
Description: Subject matter wherein the contact charger is brushlike or fibrous.










Patents under this class:
1 2 3 4

Patent Number Title Of Patent Date Issued
8620186 Image forming apparatus Dec. 31, 2013
8577235 Image forming apparatus featuring control voltages applied to magnetic particle carrying members Nov. 5, 2013
8295723 Image forming apparatus and image forming method with improved protective agent properties Oct. 23, 2012
8275277 Image forming apparatus Sep. 25, 2012
8180256 Image forming apparatus featuring first and second brushes for charging residual toner May. 15, 2012
8139984 Image forming method and apparatus Mar. 20, 2012
8027617 Image forming apparatus Sep. 27, 2011
8005402 Charging device, image forming apparatus and charging method Aug. 23, 2011
7970320 Image forming apparatus having charging device using magnetic brush charger Jun. 28, 2011
7933533 Charging device having charging roller with specific characteristic and image forming apparatus Apr. 26, 2011
7917063 Charging apparatus and image forming apparatus Mar. 29, 2011
7907871 Image forming apparatus Mar. 15, 2011
7885579 Charging device, image forming apparatus and charging method Feb. 8, 2011
7764917 Image forming apparatus including a photosensitive member, a cleaning blade, and a cleaning brush Jul. 27, 2010
7761034 Image forming apparatus with cleaning means and image forming method using the same Jul. 20, 2010
7756446 Image forming apparatus Jul. 13, 2010
7738803 Image forming method and apparatus for effectively charging an image carrier Jun. 15, 2010
7734223 Image forming apparatus and process cartridge employing the same having brush roller charger Jun. 8, 2010
7734222 Image forming apparatus with flexible tube for cooling air and guide channel for flexible tube Jun. 8, 2010
7711283 Image forming method and image forming apparatus May. 4, 2010
7668480 Cleaning device for use with image forming apparatus Feb. 23, 2010
7639960 Charger, image forming apparatus, and charge control method Dec. 29, 2009
7636532 Charging device capable of switching and executing charging processing for photosensitive surface of photosensitive member and collection processing for developing agent remaining on the photo Dec. 22, 2009
7627270 Image forming apparatus that effectively charges a latent image carrier Dec. 1, 2009
7539442 Charging unit, process unit including the same, and image forming apparatus including the same May. 26, 2009
7529504 Organic photoconductor, process cartridge and image forming apparatus both employing the same May. 5, 2009
7480474 Charging apparatus, process cartridge, and image forming apparatus Jan. 20, 2009
7395011 Image forming apparatus with cleaning device for removing remaining toner from outer surface of photosensitive member Jul. 1, 2008
7289753 Image forming apparatus and charging unit therefor Oct. 30, 2007
7248821 Charging device Jul. 24, 2007
7244485 Imageable seamed belts having polyamide adhesive between interlocking seaming members Jul. 17, 2007
7245847 Cleaning apparatus for a rotatable brush Jul. 17, 2007
7232635 Image forming method, image forming apparatus, and processing cartridge Jun. 19, 2007
7233755 Image forming apparatus Jun. 19, 2007
7130565 Charging apparatus and image forming apparatus Oct. 31, 2006
7103303 Charging apparatus and image forming apparatus Sep. 5, 2006
7082277 Contact charger and image forming apparatus Jul. 25, 2006
6999699 Contact charger and image forming apparatus Feb. 14, 2006
6954600 Electric contact member applying voltage to charger, process cartridge, and image forming apparatus Oct. 11, 2005
6915093 Image forming apparatus having a guide device for guiding a brush roller Jul. 5, 2005
6909868 Brush charger for static-charging a photosensitive member and image forming apparatus Jun. 21, 2005
6909859 Charging apparatus with plural charging means Jun. 21, 2005
6873809 Image forming apparatus and cleaning device therefor Mar. 29, 2005
6832062 Charging apparatus, process cartridge and image forming apparatus having electroconductive particles charged in a nip between a charging member and a member to be charged Dec. 14, 2004
6792232 Charging apparatus and image forming apparatus Sep. 14, 2004
6788911 Charging apparatus, process cartridge and image forming apparatus Sep. 7, 2004
6754461 Developer charging device Jun. 22, 2004
6751427 Charging member, facing member, and image forming apparatus using the same Jun. 15, 2004
6701118 Method and apparatus for image forming performing improved cleaning and discharging operations on image forming associated members Mar. 2, 2004
6697591 Electrophotographic apparatus and process cartridge Feb. 24, 2004

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