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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:
Patents under this class:
| Patent Number |
Title Of Patent |
Date Issued |
| 7619791 |
Image forming method and image forming device |
Nov. 17, 2009 |
| 7616910 |
Image forming apparatus capable of optimizing glossiness of image formed on recording material with transparent or white toner |
Nov. 10, 2009 |
| 7613405 |
Image forming apparatus comprising a plurality of image carriers |
Nov. 3, 2009 |
| 7596331 |
Image forming apparatus |
Sep. 29, 2009 |
| 7583909 |
Image forming apparatus and image forming method using decolorizing toner |
Sep. 1, 2009 |
| 7580648 |
Systems and methods for momentum controlled scavengeless jumping development in electrophotographic marking devices |
Aug. 25, 2009 |
| 7574155 |
Developing apparatus and imaging apparatus |
Aug. 11, 2009 |
| 7574154 |
Image forming apparatus with moving speed ratio change section and image forming method including changing circumferential speed ratio |
Aug. 11, 2009 |
| 7555232 |
Image forming apparatus and developing method |
Jun. 30, 2009 |
| 7546047 |
Image forming apparatus and method of controlling the same having fixed developing apparatuses |
Jun. 9, 2009 |
| 7539429 |
Image forming apparatus having a stable image density |
May. 26, 2009 |
| 7536127 |
Developing device adjustment method |
May. 19, 2009 |
| 7536137 |
Wet electrophotographic image forming apparatus and method for controlling the same |
May. 19, 2009 |
| 7532830 |
Environmental controls for operation of an electrostatographic developer unit having multiple magnetic brush rolls |
May. 12, 2009 |
| 7526219 |
Image forming apparatus and method of calculating an amount of toner transfer by converting regular reflection output into a normalized value |
Apr. 28, 2009 |
| 7515840 |
Image forming apparatus including a counting section for counting the toner image |
Apr. 7, 2009 |
| 7512351 |
Image forming apparatus which suppresses selective development of toner |
Mar. 31, 2009 |
| 7512352 |
Image forming apparatus with switched-potential responsive to attenuation of a remaining voltage |
Mar. 31, 2009 |
| 7499660 |
Image forming apparatus and image forming method |
Mar. 3, 2009 |
| 7477857 |
Developing unit, image forming device, and developing bias control method |
Jan. 13, 2009 |
| 7471909 |
Image forming apparatus |
Dec. 30, 2008 |
| 7454149 |
Image forming apparatus |
Nov. 18, 2008 |
| 7433611 |
Image forming apparatus that judges lifetime of photosensitive unit |
Oct. 7, 2008 |
| 7433616 |
Image forming apparatus including a controlling section |
Oct. 7, 2008 |
| 7433617 |
Image forming apparatus to control voltage of development unit |
Oct. 7, 2008 |
| 7430381 |
Developing device with corrected toner density sensing, control method, and computer-readable storage medium |
Sep. 30, 2008 |
| 7421223 |
Printing system |
Sep. 2, 2008 |
| 7418215 |
Developing device with toner and magnetic carrier, and image forming apparatus using the developing device |
Aug. 26, 2008 |
| 7409168 |
Image forming apparatus, process cartridge and developing method |
Aug. 5, 2008 |
| 7403726 |
Image forming apparatus |
Jul. 22, 2008 |
| 7398025 |
White vector feedback adjustment |
Jul. 8, 2008 |
| 7395018 |
Image forming apparatus including units for recovering developing agent adhering to developing agent carriers |
Jul. 1, 2008 |
| 7383003 |
Developing apparatus for preventing ghost images and uneven image density |
Jun. 3, 2008 |
| 7366434 |
Periodic doctor element field reversal in an electrophotographic device |
Apr. 29, 2008 |
| 7359650 |
Image forming apparatus and method for judging the lifetime of a photosensitive unit |
Apr. 15, 2008 |
| 7356273 |
Image forming apparatus with switched-potential responsive to attenuation of a remaining voltage |
Apr. 8, 2008 |
| 7356289 |
Image forming apparatus with toner forced discharge mode |
Apr. 8, 2008 |
| 7343122 |
Image forming apparatus for preventing worm-shaped image irregularities |
Mar. 11, 2008 |
| 7343109 |
Electrophotographic printer having developer and transfer bias control |
Mar. 11, 2008 |
| 7336910 |
Image forming apparatus with gamma conversion means |
Feb. 26, 2008 |
| 7315703 |
Image forming apparatus, image forming system, and image forming method |
Jan. 1, 2008 |
| 7308222 |
Toner supplying system for an image forming apparatus |
Dec. 11, 2007 |
| 7308214 |
Image forming apparatus including units for recovering developing agent adhering to developing agent carriers |
Dec. 11, 2007 |
| 7305195 |
Image forming apparatus, method of calculating amount of toner transfer, methods of converting regular reflection output and diffuse reflection output, method of converting amount of toner tra |
Dec. 4, 2007 |
| 7305193 |
Image forming apparatus with operation modes |
Dec. 4, 2007 |
| 7305196 |
Apparatus for and method of controlling high voltage in image forming apparatus |
Dec. 4, 2007 |
| 7286777 |
Image forming device with cleaning sequence process for returning toner adhered on transfer roller back to photoconductive drum |
Oct. 23, 2007 |
| 7280779 |
Image banding compensation method |
Oct. 9, 2007 |
| 7269372 |
Oxidation catalyst unit, wet-type electrophotographic image forming apparatus having the same and method for judging catalyst life span |
Sep. 11, 2007 |
| 7263299 |
Image forming apparatus that judges lifetime of photosensitive unit |
Aug. 28, 2007 |
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