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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
8711380 Automatic image-content based adjustment of printer printing procedures Apr. 29, 2014
8670686 Image forming apparatus having registration designation for optional apparatus Mar. 11, 2014
8659252 Electric power steering apparatus Feb. 25, 2014
8639134 Image forming apparatus that enables reducing time required for adjustment operation Jan. 28, 2014
8625159 Method for detecting errors in individual color separation images of a multi-color printing machine Jan. 7, 2014
8620169 Image forming apparatus Dec. 31, 2013
8620193 Image forming apparatus and control method Dec. 31, 2013
8600257 Printing device having correcting function Dec. 3, 2013
8594522 Image forming apparatus capable of controlling printing interruption, method of controlling the same, and storage medium Nov. 26, 2013
8588675 Image forming system Nov. 19, 2013
8565626 Image forming system, control apparatus, and image forming apparatus having toner transfer rates for first and second faces of a recording paper Oct. 22, 2013
8565647 Image forming apparatus Oct. 22, 2013
8514468 Image forming apparatus Aug. 20, 2013
8509634 Image forming apparatus that enables reducing time required for adjustment operation Aug. 13, 2013
8508800 Image forming apparatus and method of color misregistration correction Aug. 13, 2013
8494392 Image forming apparatus and image forming system Jul. 23, 2013
8452209 Image forming apparatus May. 28, 2013
8428477 Image forming apparatus Apr. 23, 2013
8398353 Print processing system, print processing method, and storage medium Mar. 19, 2013
8396381 Methods and apparatuses for applying respective EP engine settings to different zones within a page of media Mar. 12, 2013
8396409 Printing apparatus Mar. 12, 2013
8391749 Image forming apparatus, image forming unit, and erase light control method Mar. 5, 2013
8364046 Image forming apparatus and control parameter correcting method Jan. 29, 2013
8364050 Printing system, method for controlling the printing system, and storage medium Jan. 29, 2013
8351079 Banding profile estimation using spline interpolation Jan. 8, 2013
8351080 Least squares based coherent multipage analysis of printer banding for diagnostics and compensation Jan. 8, 2013
8345296 Image processing apparatus for determining appropriateness of combination of control software, activation method, and storage medium storing control program that causes computer to perform the Jan. 1, 2013
8335457 Methods, systems and apparatus for synchronizing two photoreceptors without effecting image on image quality Dec. 18, 2012
8334885 Image forming apparatus Dec. 18, 2012
8320786 Image forming apparatus Nov. 27, 2012
8289573 Method for reducing registration defects in color printing Oct. 16, 2012
8275274 Image forming apparatus Sep. 25, 2012
8269998 Image forming device, image forming method, printer driver program, and image forming system Sep. 18, 2012
8260161 Image forming apparatus Sep. 4, 2012
8249473 Image forming apparatus with reduced deterioration of the carrier carrying developer Aug. 21, 2012
8204427 Image forming apparatus with multiple lateral alignment positions Jun. 19, 2012
8180254 Dynamic image positioning and spacing in a digital printing system May. 15, 2012
8165483 Image forming apparatus with control unit and for control method for controlling the same Apr. 24, 2012
8159696 Image forming device capable of driving with single processor Apr. 17, 2012
8135296 Image forming apparatus Mar. 13, 2012
8135326 Image forming apparatus Mar. 13, 2012
8107832 Image forming apparatus Jan. 31, 2012
8095024 Image forming device and image forming method detecting a reference point on an intermediate transfer member Jan. 10, 2012
8095043 Image forming apparatus and method of abrading photoconductor of the apparatus Jan. 10, 2012
8059318 Color image forming apparatus and control method therefor Nov. 15, 2011
8032039 Controller, image-forming device, and storage medium Oct. 4, 2011
8031365 Image processor and image processing method for reducing consumption amount of recording material Oct. 4, 2011
8027609 Image forming apparatus for counting images formed by the apparatus Sep. 27, 2011
8000620 Image forming apparatus and transfer method thereof Aug. 16, 2011
7983578 Image forming device with a manual darkness adjusting section Jul. 19, 2011

1 2 3 4 5

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