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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:
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Patent Number Title Of Patent Date Issued
6285841 Image forming apparatus using an asymmetric wave pattern of developing bias voltage Sep. 4, 2001
6282385 Developing device and image forming apparatus using the same Aug. 28, 2001
6278849 Developing apparatus for developing an electrostatic latent image on an image carrying member Aug. 21, 2001
6275666 Developing device and image formation apparatus Aug. 14, 2001
6272296 Method and apparatus using traveling wave potential waveforms for separation of opposite sign charge particles Aug. 7, 2001
6266494 High-altitude compensation for a xerographic development system Jul. 24, 2001
6253040 Operational method for an electrographic printer or copier Jun. 26, 2001
6243543 Developing device for developing a latent image Jun. 5, 2001
6236818 Developing device with timing control May. 22, 2001
6226466 Image forming apparatus that performs image density control May. 1, 2001
6226467 Developer unit detachably attachable to image forming apparatus May. 1, 2001
6226468 Image forming method and apparatus having a ratio of a thickness or a weight per unit area between liquid developer on a developing device and image carrier being smaller than about 0.71 May. 1, 2001
6223004 Image forming apparatus having image transfer control Apr. 24, 2001
6219499 Developing apparatus and method of applying developing bias therefor Apr. 17, 2001
6167212 Development density adjusting method for image forming apparatus Dec. 26, 2000
6163663 Image forming apparatus using a developer of a given polarity and an externally added additive of an opposite polarity Dec. 19, 2000
6157794 System to reduce mixing of toner and magnetic carrier Dec. 5, 2000
6151460 Image recording device having a developing bias voltage output circuit Nov. 21, 2000
6147698 Density control for a printer Nov. 14, 2000
6134397 Non-magnetic one-component developing apparatus Oct. 17, 2000
6134396 Developing apparatus Oct. 17, 2000
6134395 Image forming apparatus capable of preventing adhesion of a developer to an uncharged region of a latent image carrier Oct. 17, 2000
6131000 Electrophotographic printing apparatus using electric potential dividing development Oct. 10, 2000
6128449 Image forming apparatus and method for controlling charging and developing bias voltage Oct. 3, 2000
6125245 Image forming apparatus Sep. 26, 2000
6104891 Color image forming apparatus Aug. 15, 2000
6101357 Hybrid scavengeless development using a method for preventing power supply induced banding Aug. 8, 2000
6061534 Two-color image forming apparatus that prevents fringe development May. 9, 2000
6058275 Image forming apparatus with controller for controlling image forming conditions according to electrostatic capacitance of standard toner image May. 2, 2000
6055387 Device and method for electrophotographic image generation Apr. 25, 2000
6052544 Image forming apparatus using specific electric field to transfer strontium titanate-containing developer to a drum Apr. 18, 2000
6047147 Electrostatic image forming apparatus Apr. 4, 2000
6032003 Monocomponent development apparatus Feb. 29, 2000
6032005 Method for cleaning the contact charger of an electrophotographic apparatus Feb. 29, 2000
6021288 Image forming apparatus Feb. 1, 2000
6014530 Image forming apparatus having an improved photosensitive drum cleaning system Jan. 11, 2000
6006048 Wrong-sign toner detection system Dec. 21, 1999
6006049 Switched standby housing bias in read printers Dec. 21, 1999
5999762 Image forming apparatus and method therefor Dec. 7, 1999
5983044 Image forming apparatus with transfer efficiency control Nov. 9, 1999
5974278 Image formation apparatus Oct. 26, 1999
5970280 Image forming apparatus having a developing bias control unit Oct. 19, 1999
5970279 Image forming apparatus Oct. 19, 1999
5960232 Method for controlling density in a printed image Sep. 28, 1999
5937228 Image forming apparatus Aug. 10, 1999
5933684 Interactivity sensor for electrophotographic printing Aug. 3, 1999
5930554 Apparatus and method for non-interactive magnetic brush development Jul. 27, 1999
5920747 Image forming apparatus for stabilizing the density of dot images Jul. 6, 1999
5899596 Optimization of electrophotographic edge development May. 4, 1999
5893660 Image forming apparatus Apr. 13, 1999

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