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Class Information
Number: 399/58
Name: Electrophotography > Control of electrophotography process > Control of developing > Concentration control
Description: Subject matter wherein an amount or percentage of toner within the toner and carrier mixture is controlled.

Sub-classes under this class:

Class Number Class Name Patents
399/60 Detection of developed image 145
399/61 Detection of toner in developing unit 199
399/59 Setting of reference value 95

Patents under this class:
1 2 3 4 5

Patent Number Title Of Patent Date Issued
8660449 Developer concentration adjustment apparatus, method for adjusting developer concentration, and image forming apparatus using the same Feb. 25, 2014
8643903 Printing apparatus Feb. 4, 2014
8600257 Printing device having correcting function Dec. 3, 2013
8570545 Image forming apparatus having a plurality of image forming units, initial adjustment method for the image forming apparatus, and computer readable medium recording program for causing the ima Oct. 29, 2013
8521047 Image forming apparatus and toner concentration sensor Aug. 27, 2013
8515296 Developer supplying device, developing device, and image forming apparatus Aug. 20, 2013
8467693 Image forming apparatus Jun. 18, 2013
8446629 Printer driver, image forming apparatus and print controlling method May. 21, 2013
8380092 Toner concentration sensor and toner concentration control method Feb. 19, 2013
8315533 Developing device and image-forming apparatus Nov. 20, 2012
8311423 Image forming apparatus Nov. 13, 2012
8238772 Image forming apparatus Aug. 7, 2012
8238768 Image forming apparatus including developing unit and toner supplying unit Aug. 7, 2012
8233811 Image stabilizing apparatus and image forming apparatus Jul. 31, 2012
8233814 Developer supplying apparatus and image forming apparatus having the same Jul. 31, 2012
8155540 Optimized limit gain compensation for dispense time accumulators of toner concentration control Apr. 10, 2012
8145078 Toner concentration system control with state estimators and state feedback methods Mar. 27, 2012
8139245 Managing the processing of print data at printing devices based upon available consumable resources Mar. 20, 2012
8139962 Image forming apparatus for maintaining a uniform toner concentration Mar. 20, 2012
8121504 Apparatus and method for measuring or controlling concentration of liquid developer Feb. 21, 2012
8116345 Surface emitting laser and image forming apparatus Feb. 14, 2012
8111436 Image-forming method and image-forming apparatus Feb. 7, 2012
8106767 Wireless tag communication system and image forming apparatus Jan. 31, 2012
8107830 Image forming apparatus and method of discarding developer Jan. 31, 2012
8098401 Method and apparatus for printing that considers an undesirable optical density printing range Jan. 17, 2012
8094339 Digital camera and printing method thereof Jan. 10, 2012
8078068 Toner yield analysis for monitor and replacement of consumables within a print system Dec. 13, 2011
8078069 Image forming apparatus and image forming method Dec. 13, 2011
8045866 Hard imaging methods, liquid marking agent monitoring methods, and hard imaging devices Oct. 25, 2011
8023839 Developing apparatus and image forming machine Sep. 20, 2011
8023848 Density measuring device, liquid developer storing apparatus, and image forming apparatus Sep. 20, 2011
8009997 Toner replenishment determination device of an image forming apparatus Aug. 30, 2011
8005383 Liquid developer collecting system and image forming apparatus including the same Aug. 23, 2011
8005384 Liquid developer collecting system and image forming apparatus including the same Aug. 23, 2011
8005382 Liquid developer collecting system and image forming apparatus including the same Aug. 23, 2011
8000615 Image forming apparatus and image forming method Aug. 16, 2011
7995935 Developer device, image forming apparatus, and toner replenishment method Aug. 9, 2011
7949264 Image forming apparatus and method May. 24, 2011
7929870 Image forming apparatus with a toner dispensing control unit Apr. 19, 2011
7929882 Image development apparatus and image forming apparatus using the same, and image development method and image forming method using the same Apr. 19, 2011
7925175 Developing device and image forming apparatus including the same Apr. 12, 2011
7925174 Image forming apparatus Apr. 12, 2011
7899343 Image forming apparatus Mar. 1, 2011
7894731 Method by which an infinite number of colors may be used with a finite number of CCUs Feb. 22, 2011
7831159 Image forming apparatus for forming toner image using developer made of toner and carrier Nov. 9, 2010
7831158 Image forming apparatus capable of controlling toner supply Nov. 9, 2010
7826763 Ozone removal device, image forming apparatus having the same, and method for removing ozone Nov. 2, 2010
7809296 Printing device toner control including rest recovery system, method and algorithm Oct. 5, 2010
7751757 Developer cartridge, developing device and image forming apparatus Jul. 6, 2010
7734206 Image forming apparatus Jun. 8, 2010

1 2 3 4 5

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