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Class Information
Number: 399/224
Name: Electrophotography > Image formation > Development > Plural diverse (e.g., color) > Adding toner
Description: Subject matter wherein developer materials of different colors are added separately to an applicator or applicators.

Patents under this class:

Patent Number Title Of Patent Date Issued
8634748 Image forming apparatus having an apparatus body with openable and fixed covers Jan. 21, 2014
8385787 Image forming apparatus and medium container installed therein Feb. 26, 2013
8178271 Polymer having a sulfonic group or a sulfonate group and an amide group and method of producing same May. 15, 2012
8086147 Image forming apparatus and intermediate transfer unit Dec. 27, 2011
7831175 Developer cartridge guide unit and image forming apparatus having the same Nov. 9, 2010
7761015 Toner dispensing system and method for controlling the same Jul. 20, 2010
7684730 Image forming apparatus and intermediate transfer unit Mar. 23, 2010
7672617 Image apparatus with toner replenishing Mar. 2, 2010
7664435 Development apparatus Feb. 16, 2010
7561835 Developing device, and image forming apparatus and process cartridge using the developing device Jul. 14, 2009
7502577 Image forming apparatus comprising a plurality of image forming stations and plurality of developer accommodating vessels Mar. 10, 2009
7437101 Toner container and toner filling method Oct. 14, 2008
6618564 Electrophotographic development system with custom color printing Sep. 9, 2003
6347199 Toner supply method in picture image forming system and picture image forming system Feb. 12, 2002
6198890 Electrophotographic color printing arrangement with inclined photoreceptor path Mar. 6, 2001
5852759 Electrostatographic developing device with toner dosage reservoir Dec. 22, 1998
5809370 Image forming apparatus capable of loading cartridge Sep. 15, 1998
5802435 Toner hopper lockout mechanism Sep. 1, 1998
5797069 Developing device for image forming apparatus Aug. 18, 1998
5787328 Rotary developing device for an image forming apparatus Jul. 28, 1998
5765059 Developing device for image forming apparatus and toner container therefor Jun. 9, 1998
5722008 Copy machine with physical mixing of distinct toner to form a custom colored toner Feb. 24, 1998
5708918 Image formation apparatus that can maintain appropriately toner density in developing device Jan. 13, 1998
5640644 Image forming apparatus having toner replenishment device Jun. 17, 1997
5315362 Multicolor developing device including expansion/contraction means for permitting a developing mechanism to move relative to its associated toner container May. 24, 1994
5300991 Image forming apparatus with toner replenisher Apr. 5, 1994
5298951 Image forming apparatus with toner monitoring system Mar. 29, 1994
5287161 Color image forming apparatus with a multicolor detachable process unit Feb. 15, 1994
5194905 Color printer apparatus for printing selected portions of latent images in various colors Mar. 16, 1993
5182608 Method and apparatus for applying toner to an electrostatic image Jan. 26, 1993
5177543 Detack enhancement for electrostatographic document copiers/printers Jan. 5, 1993
5172168 Electrophotographic system haivng a developing device with a plurality of toner feeders Dec. 15, 1992
5162854 Image forming apparatus having at least two toning stations Nov. 10, 1992
5150162 Toner supply device for an image forming apparatus Sep. 22, 1992
5089859 Multicolor image forming apparatus which converts color data into erasing data Feb. 18, 1992
5077584 Toner supply device for electrophotographic equipment Dec. 31, 1991
5049930 System for preventing erroneous mounting of developer tanks accommodated in a developing device Sep. 17, 1991
5047804 Image forming apparatus having a toner replenishment control system Sep. 10, 1991
5045884 Toner supply arrangement Sep. 3, 1991
4982242 Color image forming apparatus Jan. 1, 1991
4954844 Multicolor image developing device Sep. 4, 1990
4937627 Image forming apparatus having toner replenishing device interchangeable with a developing unit Jun. 26, 1990
4927724 Method and apparatus for color electrophotography May. 22, 1990
4913348 Method and apparatus for creating contrasting images at substantially full contrast voltage Apr. 3, 1990
4912512 Electrophotographic copier with a capability of automatically setting up optimum process conditions Mar. 27, 1990
4878091 Multicolor image forming apparatus Oct. 31, 1989
4814821 Image-forming device Mar. 21, 1989
4111151 Multi-particle developability regulating system Sep. 5, 1978

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