Resources Contact Us Home
Browse by: INVENTOR PATENT HOLDER PATENT NUMBER DATE
 
 
Browse by Category: Main > Electrical & Energy
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
5447056 Toner concentration control system for liquid electrophotography Sep. 5, 1995
5410388 Automatic compensation for toner concentration drift due to developer aging Apr. 25, 1995
5402209 Electrophotographic reproduction apparatus controllable toner density and method thereof for controlling an electrophotographic reproduction process Mar. 28, 1995
5386276 Detecting and correcting for low developed mass per unit area Jan. 31, 1995
5373351 Electrostatic recording apparatus and managing system thereof Dec. 13, 1994
5365318 Developer unit utilizing a non-magnetic single component developer Nov. 15, 1994
5329339 Laser beam printer capable of forming line images having stable image width Jul. 12, 1994
5309207 Apparatus for forming image May. 3, 1994
5285241 Maintaining precise electrostatic control using two ESVs Feb. 8, 1994
5262828 Developing bias power unit for use in an image forming apparatus Nov. 16, 1993
5243391 Varying an electric field, during development of a latent electrostatic image with developer solution, in proportion to a sensed concentration of toner that is within the developer solution Sep. 7, 1993
5235385 Method and apparatus for controlling toner image density Aug. 10, 1993
5227842 Electrophotographic image forming apparatus which controls developer bias based on image irregularity Jul. 13, 1993
5155530 Toner process control system based on toner developed mass, reflectance density and gloss Oct. 13, 1992
5124750 Toner density detecting method, and image forming method and apparatus employing the toner density detecting method Jun. 23, 1992
5097277 Cyclonic toner charging donor Mar. 17, 1992
5089832 Image forming apparatus Feb. 18, 1992
5045883 Image density control method using exclusive patterns for an image forming apparatus Sep. 3, 1991
5034775 Triboelectric charge measurement Jul. 23, 1991
5006897 Determination of charge-to-mass ratio Apr. 9, 1991
4972230 Toner usage detector based on current biasing mixing means Nov. 20, 1990
4947212 Developing apparatus with color dependent toner supply voltage Aug. 7, 1990
4887102 Image forming apparatus Dec. 12, 1989
4870460 Method of controlling surface potential of photoconductive element Sep. 26, 1989
4833500 Developing apparatus May. 23, 1989
4814834 Electrophotographic apparatus Mar. 21, 1989
4801967 Voltage sensing in A.C. corotrons Jan. 31, 1989
4771314 Developer apparatus for a highlight printing apparatus Sep. 13, 1988
4745434 Copying apparatus having progressive control means May. 17, 1988
4717999 Image forming apparatus Jan. 5, 1988
4682882 Image recording apparatus Jul. 28, 1987
4666290 Cartridge loading device for a copying machine May. 19, 1987
4641200 Image reproducing apparatus with variable AC bias Feb. 3, 1987
4626096 Image forming apparatus for forming a visual image in accordance with image signals Dec. 2, 1986
4624548 Image density control device Nov. 25, 1986
4619522 Dual mode image density controlling method Oct. 28, 1986
4607954 Automatic developing bias control device Aug. 26, 1986
4565438 Development system using electrically field dependent developer material Jan. 21, 1986
4492179 Control system for regulating the dispensing of marking particles in an electrophotographic printing machine Jan. 8, 1985
4469429 Electrophotographic reproducing machine Sep. 4, 1984
4434221 Toner concentration detection by measuring current created by transfer of carrier component to non-image areas of image support surface Feb. 28, 1984
4390265 Image forming apparatus Jun. 28, 1983
4348100 Control for xerographic system Sep. 7, 1982
4343548 Control system for regulating the concentration of toner particles within a developer mixture Aug. 10, 1982
4319544 Digitally synthesized dynamic bias method and apparatus for toning control in developing latent electrophotographic images Mar. 16, 1982
4314755 Bias voltage controlled developing system in an electrophotographic copying machine Feb. 9, 1982
4304486 Automatic bias and registration control system for electrophotographic copier Dec. 8, 1981
4257347 Process and apparatus for electrophotographic development of latent images on sheet-like carriers Mar. 24, 1981
4190018 Powder density control circuit for a photocopier Feb. 26, 1980
4168329 Auto-bias developing process and an electrophotographic copying machine Sep. 18, 1979

1 2 3 4 5 6 7 8 9 10










 
 
  Recently Added Patents
Optical receiver and optical transfer apparatus
Dispenser
Method of bonding metallic members, and metallic bonded body
Estimating stack distances
Communication network management system, method and program, and management computer
Methods circuits apparatuses and systems for facilitating access to online content
Semiconductor arrangement with a solder resist layer
  Randomly Featured Patents
Ejector assembly for a firearm adapter
Radiant barrier rafter vent
Polyhydroxybutyrate polymerase
Ion implanting apparatus for manufacturing semiconductor devices
Rotating transducing head assembly
Geometry adaptation using data redistribution
Photosenstive material for electrophotography
Dipyriodoxyl phosphate chelating compound intermediates
Machine for treating objects
Preparation of pigment concentrates