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Class Information
Number: 399/38
Name: Electrophotography > Control of electrophotography process
Description: Subject matter wherein a means or method is provided that senses a condition or change of condition and effects an image-forming operation of an electrophotography process (e.g., charging, exposing, developing, transfer, fixing, or cleaning), component, or device in response to the sensed or changed condition.

Sub-classes under this class:

Class Number Class Name Patents
399/42 Artificial intelligence 67
399/39 Color balance 165
399/50 Control of charging 482
399/71 Control of cleaning 298
399/53 Control of developing 386
399/51 Control of exposure 289
399/67 Control of fixing 554
399/66 Control of transfer 855
399/74 Densitometer detail 163
399/73 Electrometer detail 48
399/72 Forming test image 359
399/44 Having temperature or humidity detection 510
399/46 Of plural processes 246
399/45 Responsive to copy media characteristic 755
399/43 Responsive to number of copies or passage of time 368

Patents under this class:
1 2 3 4 5

Patent Number Title Of Patent Date Issued
7228081 Method and apparatus for image forming capable of controlling image-forming process conditions Jun. 5, 2007
7212756 Image forming apparatus with extraordinary state detection May. 1, 2007
7206068 Image forming device, post-processing device and color calibration method Apr. 17, 2007
7171135 Multifunction apparatus having an energy saving mode and method thereof Jan. 30, 2007
7164873 Image forming apparatus Jan. 16, 2007
7139492 Imaging forming apparatus having a plurality of dismountable units necessary for image forming Nov. 21, 2006
7100169 Method, system, and program for transmitting notification to an input/output device Aug. 29, 2006
7088931 Image forming apparatus capable of changing image forming directions and its fixing device Aug. 8, 2006
7054567 Initialization method for establishing process control parameters May. 30, 2006
7046938 Image forming apparatus May. 16, 2006
7039348 Method for maintaining image on image and image on paper registration May. 2, 2006
7035557 Method for correction of the calibration of a register mark accurate printing process Apr. 25, 2006
7016083 Copying machine, copying-operation control device and computer readable recording medium Mar. 21, 2006
7016635 Image-formation apparatus, controlling method thereof and image-formation method Mar. 21, 2006
6996348 Image forming device providing user with method for clearing errors Feb. 7, 2006
6975818 Image formation device using an I.sup.2 C bus and a control method thereof Dec. 13, 2005
6937358 Printable substrate having controllable thickness and method of making and using the same Aug. 30, 2005
6898383 Image forming apparatus May. 24, 2005
6891560 Method of reducing consumption of developer used in electrophotographic processor, and electrophotographic processor performing the method May. 10, 2005
6845220 Development device to detect a developing gap Jan. 18, 2005
6826519 Optical path simulation CAD system and method Nov. 30, 2004
6819886 Gloss/density measurement device with feedback to control gloss and density of images produced by an electrographic reproduction apparatus Nov. 16, 2004
6801724 Image forming apparatus Oct. 5, 2004
6801725 Image forming apparatus Oct. 5, 2004
6798999 Image forming apparatus Sep. 28, 2004
6760553 Electrophotographic cluster printing system with controlled image quality Jul. 6, 2004
6748185 Copier pre-displaying scanned image and control method thereof Jun. 8, 2004
6744997 Methods for generating a calibration product for an image producing device having a plurality of toner stations Jun. 1, 2004
6731884 Image forming apparatus and toner supply device and method used in image forming apparatus May. 4, 2004
6697581 Image forming apparatus Feb. 24, 2004
6690895 Image carrier and image forming apparatus Feb. 10, 2004
6686942 Memory device for an image forming apparatus storing characteristics information about a process cartridge detachably attachable to the apparatus Feb. 3, 2004
6643492 Image forming apparatus and image forming method Nov. 4, 2003
6628905 Image forming apparatus Sep. 30, 2003
6621990 Method for determining air density Sep. 16, 2003
6577825 User detection system for an image-forming machine Jun. 10, 2003
6564035 Carrying apparatus and image forming apparatus May. 13, 2003
6553191 Adjustment-control system for image forming apparatus Apr. 22, 2003
6546214 Image forming apparatus comprising storing means for storing a parameter regarding an accumulation operation amount of the apparatus or of a cartridge detachably mountable to the apparatus Apr. 8, 2003
6542257 Image formation apparatus which forms images of four pages on both faces of sheet in such a manner as images of two pages are formed on each face Apr. 1, 2003
6538759 Non-reproducible image formation preventing apparatus and image formation apparatus Mar. 25, 2003
6532030 Process cartridge, image forming apparatus, and image forming method Mar. 11, 2003
6507713 Image-formation apparatus, controlling method thereof and image-formation method Jan. 14, 2003
6493524 Image forming apparatus Dec. 10, 2002
6483996 Method and system for predicting print quality degradation in an image forming device Nov. 19, 2002
6480298 Image bearing substrate having increased density and method of forming same Nov. 12, 2002
6477338 Image formation apparatus, toner amount measurement apparatus, and toner amount measurement method Nov. 5, 2002
6438329 Method and apparatus for automatic customer replaceable unit (CRU) setup and cleaner blade lubrication Aug. 20, 2002
6429886 Correction control for image forming apparatus and method Aug. 6, 2002
6404997 Method and apparatus for dynamically controlling image density Jun. 11, 2002

1 2 3 4 5

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