公开(公告)号：US10527989B2

公开(公告)日：2020-01-07

申请号：US16328749

申请日：2018-05-25

Applicant: KYOCERA Document Solutions Inc.

Inventor： Seiji Taki

IPC: G03G15/00 ,  G03G15/043

Abstract: A density correction unit calculates a density change rate to a change in an exposure amount as a first density change rate based on a difference between a density of a part of reference patch images, in which a position in a main scanning direction is identical to a position of a first patch image. As for a second patch image, the density correction unit similarly calculates a second density change rate. A light amount when forming the first patch image is smaller than a reference light amount. A light amount when forming the second patch image is larger than the reference light amount. The density correction unit uses the first or the second density change rate based on whether a density of each position of the reference patch images in the main scanning direction higher or lower than a target density to correct the exposure amount.

公开(公告)号：US09841698B2

公开(公告)日：2017-12-12

申请号：US15484248

申请日：2017-04-11

Applicant: KYOCERA Document Solutions Inc.

Inventor： Hideji Mizutani ,  Takayuki Kurihara ,  Seiji Taki ,  Shingo Yoshida

IPC: G03G15/00 ,  G03G15/04 ,  G02B26/12 ,  G02B27/00

CPC classification number: G03G15/04036 ,  G02B26/121 ,  G02B26/123 ,  G02B26/127 ,  G02B27/0006 ,  G03G15/0409

Abstract: Disclosed is an optical deflector including a polygonal mirror and a drive motor each mounted on a substrate, a cover member covering the polygonal mirror and the drive motor, and an electronic component. The cover member includes: a first cover portion defining a first space in which the polygonal mirror is installed, wherein the first cover portion is formed with a first opening opened in opposed relation to an outer peripheral surface of the polygonal mirror; and a second cover portion defining a second space which is communicated with the first space and in which the drive motor is installed, wherein the second cover portion is formed with a second opening opened in opposed relation to a motor body of the drive motor. When viewed in the first direction, the electronic component is disposed such that it falls within an open region of the second opening.

公开(公告)号：US20170299975A1

公开(公告)日：2017-10-19

申请号：US15484248

申请日：2017-04-11

Applicant: KYOCERA Document Solutions Inc.

Inventor： Hideji Mizutani ,  Takayuki Kurihara ,  Seiji Taki ,  Shingo Yoshida

IPC: G03G15/04 ,  G02B26/12 ,  G02B27/00

CPC classification number: G03G15/04036 ,  G02B26/121 ,  G02B26/123 ,  G02B26/127 ,  G02B27/0006 ,  G03G15/0409

Abstract: Disclosed is an optical deflector including a polygonal mirror and a drive motor each mounted on a substrate, a cover member covering the polygonal mirror and the drive motor, and an electronic component. The cover member includes: a first cover portion defining a first space in which the polygonal mirror is installed, wherein the first cover portion is formed with a first opening opened in opposed relation to an outer peripheral surface of the polygonal mirror; and a second cover portion defining a second space which is communicated with the first space and in which the drive motor is installed, wherein the second cover portion is formed with a second opening opened in opposed relation to a motor body of the drive motor. When viewed in the first direction, the electronic component is disposed such that it falls within an open region of the second opening.

公开(公告)号：US10437170B2

公开(公告)日：2019-10-08

申请号：US16321225

申请日：2018-06-08

Applicant: KYOCERA Document Solutions Inc.

Inventor： Seiji Taki

IPC: G03G15/043 ,  H04N1/113 ,  H04N1/00 ,  G03G15/04 ,  G03G15/00

Abstract: Provided is an image forming apparatus configured to acquire a density of a test print image at each position in the main scanning direction, which is read by the image reading unit after a first test print image is formed, to correct a setting value of an exposure amount of an exposure device to a first light amount, which is higher than a reference light amount that is an exposure amount when the first test print image is formed, in an area where the acquired density is lower than a target density, to correct the exposure amount of the exposure device to a second light amount, which is lower than the reference light amount, in an area where the acquired density is higher than the target density, and to form a second test print image. On the basis of the second test print image, density correction is performed.