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Class Information
Number: 399/223
Name: Electrophotography > Image formation > Development > Plural diverse (e.g., color)
Description: Subject matter wherein more than one color of developer material is provided for developing one or more latent images.

Sub-classes under this class:

Class Number Class Name Patents
399/224 Adding toner 48
399/233 Liquid 97
399/226 Plural applicators single position 86
399/228 Selectively active 173
399/225 Single applicator 29
399/231 Toner images overlapped 112

Patents under this class:
1 2 3 4 5 6 7 8 9

Patent Number Title Of Patent Date Issued
8705996 Image forming apparatus controlling toner image overlapping ratio Apr. 22, 2014
8676072 Ratio modulated printing with charge area development Mar. 18, 2014
8655228 Image forming apparatus Feb. 18, 2014
8617776 Secure document printing method and system Dec. 31, 2013
8620179 Tandem type photosensitive unit and image forming apparatus Dec. 31, 2013
8606132 Image forming apparatus Dec. 10, 2013
8593684 Inverse mask generating printer and printer module Nov. 26, 2013
8580331 Digital manufacture of an electrical circuit Nov. 12, 2013
8559853 Image forming apparatus with different pressing forces between image carriers and developer carriers Oct. 15, 2013
8554089 Job error correction in a multicolor electrophotographic print engine Oct. 8, 2013
8543039 Image forming apparatus Sep. 24, 2013
8531724 Image forming device Sep. 10, 2013
8526858 Image forming apparatus having color and transparent developing devices Sep. 3, 2013
8521042 Image forming apparatus and image forming method Aug. 27, 2013
8494416 Image forming apparatus and image forming system Jul. 23, 2013
8467703 Image forming device having detachable developing device unit Jun. 18, 2013
8433223 Image forming apparatus forming transparent toner coat layer on recording medium Apr. 30, 2013
8401423 Electrophotographic image forming apparatus Mar. 19, 2013
8396396 Image forming apparatus, and developing device and developing unit thereof Mar. 12, 2013
8368953 Image forming device and method thereof Feb. 5, 2013
8369746 Clutch mechanism and processing device and image forming apparatus comprising the clutch mechanism Feb. 5, 2013
8358944 Image forming apparatus and method for print control Jan. 22, 2013
8358957 Selective printing of raised information by electrography Jan. 22, 2013
8351825 Image forming apparatus and image forming method Jan. 8, 2013
8306461 Multicolor electrophotographic print engine Nov. 6, 2012
8301062 Electrophotographically produced barrier images Oct. 30, 2012
8284458 Image processing apparatus and method for managing documents with output-prohibit area Oct. 9, 2012
8285162 Image forming apparatus that includes a first developing device that holds a black developer and a second developing device that holds a gray developer Oct. 9, 2012
8278018 Process for producing dry ink colorants that will reduce metamerism Oct. 2, 2012
8279491 Color image formation apparatus for forming a reference pattern with a plurality of lines having a black color as reference color and for correcting misalignment with respect to the reference Oct. 2, 2012
8270878 Image forming apparatus, and developing device and developing unit thereof Sep. 18, 2012
8265502 Image forming apparatus including an alternative printing unit Sep. 11, 2012
8213830 Image forming apparatus in which developer carrying members can be separated from photosensitive members Jul. 3, 2012
8190062 Image forming apparatus with an image carrier including a light emitting element layer May. 29, 2012
8180267 Electrophotographically produced barrier images using an intermediate transfer member May. 15, 2012
8179568 Minimizing dot graininess in dot-on-dot printing devices May. 15, 2012
8175499 Image forming apparatus with a plurality of image forming units May. 8, 2012
8155563 Image forming apparatus having print engine which prints position-coding pattern with specific developing material Apr. 10, 2012
8139245 Managing the processing of print data at printing devices based upon available consumable resources Mar. 20, 2012
8139982 Image formation apparatus and printed item Mar. 20, 2012
8135310 Image forming apparatus with translation cam member Mar. 13, 2012
8116664 Image forming apparatus with member for switching between driving force modes Feb. 14, 2012
8107855 Image forming device having detachable developing device unit Jan. 31, 2012
8101326 Secure document printing method and system Jan. 24, 2012
8099024 Systems and methods of producing gradient index optics by sequential printing of toners having different indices of refraction Jan. 17, 2012
8092962 Image forming apparatus and image forming method Jan. 10, 2012
8092967 Developing agent Jan. 10, 2012
8086125 Image forming apparatus that includes a first developing device that holds a black developer and a second developing device that holds a gray developer Dec. 27, 2011
8068769 Toner usage control between differing image regions Nov. 29, 2011
8050593 Image forming apparatus including a mechanism for reliably mounting a process unit Nov. 1, 2011

1 2 3 4 5 6 7 8 9

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