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1.发明授权公开(公告)号：US11838480B2
公开(公告)日：2023-12-05
申请号：US17952415
申请日：2022-09-26
发明人： Thomas L. Schwartz , Horia Neamtu , Chung-Hui Kuo
CPC分类号： H04N1/3872 , G03G15/50 , G06T3/20 , G06T7/0004 , H04N1/00005 , H04N1/00015 , H04N1/00034 , H04N1/00045 , H04N1/00068 , H04N1/00082 , H04N1/233 , H04N1/295 , G06T2207/30144
摘要： A method for reducing image burn-in artifacts in an electrophotographic printing system, includes receiving a print job including image data for a set of pages to be printed. The pages are analyzed to determine that the image data for a sequence of pages in the print job are similar. The similar pages are printed using a pattern of lateral translations wherein the image data is laterally translated such that it is printed at a different lateral position on the printed page. The similar pages can also be printed using a pattern of page orientations including a first page orientation and a second page orientation, wherein the image data for the second page orientation is rotated 180 degrees relative to the image data for the first page orientation.
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公开(公告)号：US20230269340A1
公开(公告)日：2023-08-24
申请号：US18159142
申请日：2023-01-25
发明人： GO ARAKI , MITSUHIRO OBARA
IPC分类号： H04N1/405 , H04N1/52 , H04N1/29 , G03G15/043
CPC分类号： H04N1/4052 , G03G15/043 , H04N1/295 , H04N1/52 , H04N1/1933
摘要： An image forming apparatus includes: a scanning unit configured to form an electrostatic latent image on a photoconductor by scanning the photoconductor with one or more scanning beams in a main scanning direction based on an image signal, repetitively in a sub-scanning direction perpendicular to the main scanning direction; a generating unit configured to perform halftone processing on image data to generate the image signal; and a storage unit configured to store correction information. The correction information is set such that start positions of a plurality of scanning lines are linearly displaced to either a negative side or a positive side of the main scanning direction along the sub-scanning direction, in accordance with a direction of a first vector forming a smaller angle with the sub-scanning direction among two vectors in the halftone processing.
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公开(公告)号：US10721369B2
公开(公告)日：2020-07-21
申请号：US15445026
申请日：2017-02-28
申请人： Konica Minolta, Inc.
发明人： Tetsu Kawasaki
摘要： An image forming apparatus includes an image forming unit that forms an image based on image data; and a control unit that controls the image forming unit, the control unit is capable of controlling an image quality adjustment operation in the image forming unit, and in formation of an image on which foil stamping is performed, selection of no performance of an image quality adjustment or/and selection of performance of an image quality adjustment for foil stamping is enabled.
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公开(公告)号：US10389897B2
公开(公告)日：2019-08-20
申请号：US15889045
申请日：2018-02-05
发明人： Yuichiro Imai
IPC分类号： H04N1/00 , H04N1/028 , H04N1/29 , G03G15/04 , G03G15/16 , G03G15/043 , H04N1/031 , G02B26/12 , G02B7/182
摘要： A light scanning apparatus including: a first holder attached to a housing and configured to hold a first laser light source; a second holder attached to the housing and configured to hold a second laser light source; and a lens to which the laser lights are first incident, wherein the first holder and the second holder are attached to the housing in mutually different positions in a rotation axis direction of a rotary polygon mirror and in an optical axis direction of the lens, so that a first incident light path from the first laser light source to the rotary polygon mirror is placed between a second incident light path from the second laser light source to the rotary polygon mirror and the lens, and the first holder and the second holder overlap one another in the rotation axis direction.
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公开(公告)号：US10334138B2
公开(公告)日：2019-06-25
申请号：US15984302
申请日：2018-05-18
申请人： Oki Data Corporation
发明人： Daitetsu Amada
摘要： An image forming apparatus includes (a) a plurality of image forming unit arranged along a transfer medium, each of which is arranged movable between a lower position and an upper position; (b) an estrangement controller to move each of the image forming units between these positions; (c) a print mode management part to determine a designated print mode; (d) an image forming part to select one or more of the image forming units corresponding to the designated print mode, and to form an image to be transferred to the transfer medium by using the selected image forming units; and (e) a correction process part that performs a correction process. Wherein (f) the correction process part regularly judges whether or not a correction process execution condition is satisfied, and performs a regular correction process when the correction process execution condition is satisfied, and (g) the print mode management part judges whether or not another print process in the designated print mode has been performed after a previous regular correction process, and sets a print mode based on a judgment result by the print mode management part.
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公开(公告)号：US10274861B2
公开(公告)日：2019-04-30
申请号：US15800699
申请日：2017-11-01
发明人： Hironori Hirata
摘要： An image forming apparatus includes a controller, wherein the controller execute first control of controlling a rotational frequency of the motor based on a light receiving signal, wherein, when the target rotational frequency changes from a first rotational frequency to a second rotational frequency that is lower than the first rotational frequency, the controller executes speed change control of: stopping execution of the first control; and changing a rotational frequency of the motor, and non-lighting period change control of changing the non-lighting period in the lighting control from a first non-lighting period corresponding to the first rotational frequency to a second non-lighting period corresponding to the second rotational frequency, and the controller starts the first control in response to satisfying a condition where the deflection period of the mirror obtained based on a position signal of a rotor of the motor is longer than the second non-lighting period.
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公开(公告)号：US10237440B2
公开(公告)日：2019-03-19
申请号：US15238576
申请日：2016-08-16
发明人： Shinichi Kanematsu
摘要： A printing apparatus capable of adding information to a printing target image includes an addition unit configured to add the information, a setting unit configured to set an area to which the information is added based on a user operation, a specification unit configured to specify a length of a sheet used for printing in a sheet conveyance direction, and a control unit configured to control, in a case where the length of the sheet in the sheet conveyance direction is not specified, the addition unit to add the information into a leading end side area in the sheet conveyance direction even if a trailing end side area is set by the setting unit as the area to which the information is added.
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公开(公告)号：US10158782B2
公开(公告)日：2018-12-18
申请号：US15591551
申请日：2017-05-10
发明人： Shoji Takeda
摘要： Separately providing a shift register for performing serial-to-parallel conversion on a BD signal and a shift register for performing parallel-to-serial conversion on a bit pattern to generate a PWM signal increases the scale of a circuit for adjusting a writing start position in the scanning direction of a light beam. Therefore, the shift register for performing serial-to-parallel conversion on a BD signal and the shift register for performing parallel-to-serial conversion on a bit pattern to generate a PWM signal are configured as a common register.
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公开(公告)号：US10116823B2
公开(公告)日：2018-10-30
申请号：US15878779
申请日：2018-01-24
发明人： Tomohisa Ono
摘要： A cleaning device includes a removal roller, a collecting roller, a blade, and a toner storage section. The removal roller and the collecting roller do not have relationship such that a rotation speed or a diameter of one of the removal roller and the collecting roller is an integral multiple of a rotation speed or a diameter of the other removal roller and collecting roller. A first outer circumferential region having a first surface roughness and extending in an axial direction of a second rotary shaft and a second outer circumferential region having a greater second surface roughness than the first surface roughness and extending in the axial direction of the second rotary shaft are provided on an outer circumferential surface of the collecting roller in a circumferential direction thereof. A width of the second outer circumferential region is smaller than a width of the first outer circumferential region.
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公开(公告)号：US20180299801A1
公开(公告)日：2018-10-18
申请号：US15489141
申请日：2017-04-17
发明人： Masami OHSHIMA
CPC分类号： G03G15/043 , G03G15/04054 , G03G15/04063 , H04N1/06 , H04N1/295 , H04N2201/0094
摘要： An image forming device according to an embodiment includes a photosensitive drum and a light-emitting unit with a plurality of light-emitting elements which form an electrostatic latent image on the photosensitive drum. A processor controls a storage unit to store a cumulative light emission time of each light-emitting element. The processor further controls the storage unit to store an adjustment time which is shorter than a longest cumulative light emission time of the light-emitting elements. When a predetermined condition is satisfied, the processor controls at least one of the light-emitting elements that has a cumulative light emission time which is shorter than the adjustment time to emit light until the cumulative light emission time thereof equals the adjustment time.
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