公开(公告)号：US20190199887A1

公开(公告)日：2019-06-27

申请号：US16288174

申请日：2019-02-28

申请人： KABUSHIKI KAISHA TOSHIBA ,  TOSHIBA TEC KABUSHIKI KAISHA

发明人： Hiroyuki Ishikawa ,  Koji Tanimoto

IPC分类号： H04N1/40 ,  G03G15/04 ,  G06K15/12 ,  G03G15/043 ,  G06K15/02

CPC分类号： H04N1/40037 ,  G03G15/04054 ,  G03G15/043 ,  G06K15/027 ,  G06K15/1238 ,  G06K15/1247 ,  H04N1/40031 ,  H04N2201/0082

摘要： An optical print head comprises a first light emitting element row, a second light emitting element row, a lens array, a first drive circuit and a second drive circuit. The first light emitting element row includes the arrangement of first light emitting elements. The second light emitting element row includes second light emitting elements arranged in parallel with the first light emitting element row. The lens array concentrates light emitted by the first light emitting elements and the second light emitting elements. The first drive circuit drives each first light emitting element with an identical first current value. The second drive circuit drives each second light emitting element with an identical second current value different from the first current value.

公开(公告)号：US20190187584A1

公开(公告)日：2019-06-20

申请号：US16215379

申请日：2018-12-10

申请人： CANON KABUSHIKI KAISHA

发明人： Yuichi Utsumi

IPC分类号： G03G15/043

CPC分类号： G03G15/043 ,  G03G15/0435

摘要： An information processing apparatus includes: a second reception unit configured to receive a predetermined signal outputted via a first signal line from the image forming unit; a third reception unit configured to receive a surface information outputted via a second signal line from the image forming unit; a storage unit configured to store, in association with the surface information, a plurality of pieces of correction data respectively corresponding to a plurality of reflecting surfaces; a correction unit configured to correct the image data to correspond to a reflecting surface onto which a light for scanning a photosensitive member is to be deflected, based on correction data; and a third output unit configured to, in response to receiving the predetermined signal, output the corrected image data.

公开(公告)号：US20190155200A1

公开(公告)日：2019-05-23

申请号：US16171832

申请日：2018-10-26

申请人： Konica Minolta Inc.

发明人： Tatsutoshi YAMADA

IPC分类号： G03G15/00 ,  G03G15/04 ,  G03G15/043

CPC分类号： G03G15/5029 ,  G03G15/04072 ,  G03G15/043 ,  G03G15/0435 ,  G03G2215/00616 ,  G03G2215/00751

摘要： An image formation apparatus includes: a light source configured to emit laser light; a polygon mirror configured to reflect the laser light; a photoreceptor configured to be exposed to the laser light reflected by the polygon mirror; a motor configured to rotate the polygon mirror; and a controller configured to sense a type of a sheet transported through the image formation apparatus. The image formation apparatus includes as operation modes a first mode in which no sheet type is sensed and a second mode in which a sheet type is sensed. The controller performs different processes for control regarding rotation of the motor in the first and second modes, respectively.

公开(公告)号：US20190146370A1

公开(公告)日：2019-05-16

申请号：US16181156

申请日：2018-11-05

申请人： CANON KABUSHIKI KAISHA

发明人： Shunsuke Tanaka

IPC分类号： G03G15/043 ,  G02B26/12 ,  G02B26/08

CPC分类号： G03G15/043 ,  G02B26/0816 ,  G02B26/121

摘要： The scanning apparatus includes a control unit that controls an emission state of a light source to perform switching between first and a second emission states, wherein as a signal according to a light amount, an output unit outputs a first value when light received by the output unit has a first light amount and outputs a second value when the light received by the output unit has a second light amount larger than the first light amount, and the control unit performs switching from the first emission state to the second emission state when an output time period of a signal of the second value corresponding to the second light amount is equal to or more than a predetermined time period.

公开(公告)号：US20190129341A1

公开(公告)日：2019-05-02

申请号：US16157445

申请日：2018-10-11

申请人： KONICA MINOLTA, INC.

发明人： Yoshihiro Esumi

IPC分类号： G03G15/00 ,  G03G15/043 ,  G03G15/04

CPC分类号： G03G15/5062 ,  G03G15/04045 ,  G03G15/043

摘要： An image forming apparatus includes: a photoreceptor; a light source; a rotational polygon mirror including a plurality of mirror surfaces on an outer circumferential surface of a rotating body; and a hardware processor that: controls the light source to perform emission of a light beam; controls to rotate the rotational polygon mirror to perform a sequential primary scanning; and corrects a shift of an exposure position of the light beam; and a clock characteristic changer capable of changing a clock characteristic including at least one of frequency and phase of a write clock, wherein the hardware processor controls to execute two-dimensional exposure with the clock characteristic of the write clock, controls to execute the two-dimensional exposure at a predetermined relative position with respect to the mirror surface, and specifies a mirror surface used for formation of each portion of the detection pattern.

公开(公告)号：US20190011850A1

公开(公告)日：2019-01-10

申请号：US16109975

申请日：2018-08-23

申请人： CANON KABUSHIKI KAISHA

发明人： Shuhei Takahashi

IPC分类号： G03G15/043 ,  G03G15/04

CPC分类号： G03G15/043 ,  G03G15/04036 ,  G03G15/10 ,  G03G15/2021 ,  G03G15/2053

摘要： An image forming apparatus includes an image forming portion 10 for forming an image on a sheet 16 by using a developer 15 including toner and a curable agent curable by ultraviolet radiation, a feeding belt 14 for feeding the sheet on which the image is formed by the image forming portion 10, an infrared irradiating portion 13 for irradiating, with infrared radiation, the image on the sheet 16 fed by the feeding belt 14, an ultraviolet irradiating portion 12 for irradiating, with the ultraviolet radiation, the image on the sheet having been irradiated with the infrared radiation by the infrared irradiating portion 13, and a controller 50 for controlling operations of the feeding belt 14 and the infrared irradiating portion 13. The controller 50 causes the infrared irradiating portion 13 to irradiate the feeding belt 14 with the infrared radiation while causing the feeding belt 14 to rotate in a stand-by state in which the controller 50 waits for an execution instruction of an image forming operation in a state in which the image forming operation is capable of being started.

公开(公告)号：US20180293470A1

公开(公告)日：2018-10-11

申请号：US16005785

申请日：2018-06-12

申请人： Sharp Kabushiki Kaisha

发明人： Nobuhiro SHIRAI

IPC分类号： G06K15/14 ,  H04N1/06 ,  G03G15/043 ,  H04N1/12 ,  H04N1/113 ,  H04N1/053 ,  B41J2/47 ,  G02B26/12 ,  G02B13/00 ,  G03G15/04

CPC分类号： G06K15/14 ,  B41J2/471 ,  G02B13/0005 ,  G02B26/122 ,  G02B26/123 ,  G02B26/124 ,  G02B26/125 ,  G02B26/127 ,  G03G15/04 ,  G03G15/043 ,  H04N1/053 ,  H04N1/0607 ,  H04N1/1135 ,  H04N1/12 ,  H04N2201/0082 ,  H04N2201/04713 ,  H04N2201/04732 ,  H04N2201/04744

摘要： A light scanning device includes: a first semiconductor laser 44a that emits a light beam L1; a polygonal mirror 42 that deflects the light beam L1; a reflective mirror 64a that reflects the light beam L1 deflected by the polygonal mirror 42 and causes the light beam L1 to enter a photosensitive drum 13; and a BD sensor 72 that detects the light beam L1 deflected by the polygonal mirror 42. The light scanning device scans the photosensitive drum 13 with the light beam L1 and set scanning timing of the photosensitive drum 13 using the light beam L1 based on detection timing of the light beam L1 using the BD sensor 72. The BD sensor 72 is arranged in the position farther from the polygonal mirror 42 than the last reflective mirror 64a that reflects the light beam L1 immediately before entering the photosensitive drum 13 and arranged inside a scanning angle range α of the light beam L1 corresponding to an effective scan area of the photosensitive drum 13.

公开(公告)号：US10078289B2

公开(公告)日：2018-09-18

申请号：US15363076

申请日：2016-11-29

申请人： HP Indigo B.V.

发明人： Mark Sandler ,  Shai Lior

IPC分类号： G06T5/00 ,  H04N1/407 ,  H04N1/409 ,  G03G15/043 ,  G03G15/041 ,  G03G15/10 ,  G03G15/00

CPC分类号： G03G15/043 ,  G03G15/0415 ,  G03G15/10 ,  G03G15/5062 ,  G03G2215/00755 ,  G03G2215/00759

摘要： A method of operating a printing system includes determining whether ghosting is expected on a photoreceptor and applying power to a laser applied to the photoreceptor based on whether the ghosting is expected.

公开(公告)号：US20180259872A1

公开(公告)日：2018-09-13

申请号：US15912571

申请日：2018-03-06

申请人： FUJI XEROX CO.,LTD.

发明人： Takashi KONDO ,  Seiji ONO ,  Chikaho IKEDA

IPC分类号： G03G15/043 ,  G02B26/10 ,  H05B37/02 ,  G03G15/04

CPC分类号： G03G15/043 ,  G02B26/10 ,  G03G15/04036 ,  H05B37/02

摘要： A light-emitting device includes multiple transfer elements, multiple setting elements, multiple light-emitting elements, and a controller. The transfer elements sequentially enter an on state. The setting elements are connected to the transfer elements. In response to the transfer elements entering the on state, the setting elements are allowed to enter an on state. Each of the light-emitting elements is connected to a corresponding one of the setting elements. In response to each of the setting elements entering the on state, the corresponding one of the light-emitting elements enters an on state to emit light or increase a light emission intensity thereof. The light-emitting elements are maintained in the on state in parallel. The controller controls the setting elements to enter the on state in accordance with a received illumination control signal, and controls an illumination period of the light-emitting elements.

公开(公告)号：US10061223B2

公开(公告)日：2018-08-28

申请号：US15712484

申请日：2017-09-22

申请人： CANON KABUSHIKI KAISHA

发明人： Kazutaka Yaguchi

IPC分类号： G03G15/00 ,  G03G15/02 ,  G03G15/043 ,  G03G15/16

CPC分类号： G03G15/0266 ,  G03G15/043 ,  G03G15/1645 ,  G03G15/5037

摘要： In an image forming apparatus, a control unit performs a control for determining a surface potential A to determine a first voltage to be applied to a charge roller by a charge voltage application circuit so that a surface potential of a photosensitive drum becomes a first potential. The charge voltage application circuit thereafter applies the first voltage to the charge roller to charge the photosensitive drum. In such a state, the control unit performs a second control to determine a light amount of a laser light source, so that the surface potential of the photosensitive drum becomes a second potential. In such a manner, a potential of a photosensitive drum surface is detected with high accuracy. Moreover, a time taken to detect the potential of the photosensitive drum surface is shortened.