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Class Information
Number: 399/55
Name: Electrophotography > Control of electrophotography process > Control of developing > Bias control
Description: Subject matter wherein voltage or current used to aid or influence development is controlled.










Sub-classes under this class:

Class Number Class Name Patents
399/56 In response to potential of latent image 66


Patents under this class:
1 2 3 4 5 6 7 8 9 10

Patent Number Title Of Patent Date Issued
6889017 Image forming apparatus and control method thereof May. 3, 2005
6889016 Image forming apparatus having surface potential measuring unit and method of controlling development voltage utilizing the same May. 3, 2005
6873813 Development method and image formation apparatus Mar. 29, 2005
6865350 Charging method and developing device adopting the same Mar. 8, 2005
6845220 Development device to detect a developing gap Jan. 18, 2005
6845222 IMAGE FORMING METHOD AND IMAGE FORMING APPARATUS FOR SUPPRESSING MOVEMENT OF DEVELOPER ONTO THE ELECTROSTATIC LATENT IMAGE CARRIER WHEN THE VOLTAGES APPLIED TO THE CHARGING AND DEVELOPING DEVI Jan. 18, 2005
6832058 Image forming apparatus including a maximum charge quantity of toner particles forming useless toner Dec. 14, 2004
6829446 Development device, charging method used in the development device and image forming device having the development device Dec. 7, 2004
6829448 Image forming apparatus and image forming method Dec. 7, 2004
6829447 Developing apparatus Dec. 7, 2004
6804480 Image forming apparatus provided with a cleaning blade Oct. 12, 2004
6801724 Image forming apparatus Oct. 5, 2004
6792221 Image forming apparatus and method for revising image density Sep. 14, 2004
6785482 Image forming apparatus having a transfer current detection device and control for developing bias in non-image area Aug. 31, 2004
6768880 Image forming apparatus Jul. 27, 2004
6763200 Image forming apparatus with toner replacement sensor Jul. 13, 2004
6760553 Electrophotographic cluster printing system with controlled image quality Jul. 6, 2004
6751423 Developing apparatus and image forming apparatus Jun. 15, 2004
6735400 Electrophotographic or ionographic printer with variable printing speed May. 11, 2004
6724998 Image forming apparatus with variable toning bias offset service utility Apr. 20, 2004
6721516 Image forming apparatus Apr. 13, 2004
6701116 Image forming apparatus Mar. 2, 2004
6694111 Image forming apparatus, and developing device and method used in the same Feb. 17, 2004
6684036 Image forming apparatus Jan. 27, 2004
6681091 Development method and image formation apparatus Jan. 20, 2004
6650849 Method of and apparatus for controlling image density of toner image based on high and low-density correlation data Nov. 18, 2003
6647219 Electrophotographic recording process control method and apparatus Nov. 11, 2003
6636705 Methods and apparatus for detecting toner fade in an imaging device Oct. 21, 2003
6633735 Reduction of seam mark from an endless seamed organophotoreceptor belt Oct. 14, 2003
6564024 Image formation apparatus May. 13, 2003
6526238 Developing device Feb. 25, 2003
6522842 Developing apparatus and image forming apparatus Feb. 18, 2003
6507715 Image forming apparatus having developing supporters Jan. 14, 2003
6505012 Image forming apparatus Jan. 7, 2003
6505014 Image forming apparatus and an image forming process unit Jan. 7, 2003
6498908 Electrophotographic measurement system Dec. 24, 2002
6473572 Image forming apparatus having function for judging life of unit detachably mountable thereto, and unit detachably mountable to image forming apparatus Oct. 29, 2002
6470153 Developing device and developing method featuring a use-related control of a first voltage and a second voltage respectively, applied to a developer bearing member and a developer charging mem Oct. 22, 2002
6459862 Developing apparatus Oct. 1, 2002
6445889 Dynamic duty cycle for increased latitude Sep. 3, 2002
6415114 Image forming apparatus and method Jul. 2, 2002
6381424 Toner charge control for image defect reduction Apr. 30, 2002
6377766 Electrophotographic apparatus having a printing density controller for dropout and non-dropout color Apr. 23, 2002
6345161 Non-contact developing method, non-contact developing device and image formation device Feb. 5, 2002
6330405 Image forming apparatus Dec. 11, 2001
6308018 Image forming apparatus Oct. 23, 2001
6301453 Developing unit using oscillatory bias voltage Oct. 9, 2001
6295432 Image forming apparatus having an injection charging system and a two component contact development device Sep. 25, 2001
6289191 Single pass, multicolor contact electrostatic printing system Sep. 11, 2001
6285840 Print quality control for a xerographic printer having an AC development field Sep. 4, 2001

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