公开(公告)号：US10996609B2

公开(公告)日：2021-05-04

申请号：US16709485

申请日：2019-12-10

Applicant: KYOCERA Document Solutions Inc.

Inventor： Takuto Kunimasa ,  Masanori Kyogoku

IPC: G03G15/20 ,  G03G15/00 ,  G03G21/02

Abstract: An image forming apparatus includes an image forming portion, a fixing unit, a position adjustment mechanism, a number-of-printed-sheets counter, and a control unit. The image forming portion includes an image carrier, a charging unit, an exposure unit, a developing unit, and a transfer member. The fixing unit has a heated rotary member and a pressing member and heats and presses the sheet passing through a fixing nip portion. A position adjustment mechanism adjusts the width-direction position of the sheet parallel to the scanning direction of optical scanning by the exposure unit. Every time the number of printed sheets reaches a predetermined number, the control unit makes the correction unit shift the width-direction position of the sheet by a predetermined amount and changes the start position of scanning by the exposure unit on the image carrier according to the direction and amount of shift.

公开(公告)号：US20250147303A1

公开(公告)日：2025-05-08

申请号：US18882577

申请日：2024-09-11

Applicant: KYOCERA Document Solutions Inc.

Inventor： Takuto Kunimasa ,  Jun Nakai

IPC: G02B26/12 ,  B41J2/44 ,  B41J2/47 ,  G03G15/043

Abstract: A motor that rotates a rotation shaft of a polygon mirror is mounted on a motor board. A first photoelectric conversion element senses beam light reflected by each of a plurality of mirror surfaces. A sensing target portion is provided to the rotation shaft. A light sensor is disposed apart from the motor board and includes a light emitting portion and a second photoelectric conversion element. An amplification circuit amplifies a sense signal of the second photoelectric conversion element. A control device controls a timing of starting to form an electrostatic latent image on the basis of a sense signal of the first photoelectric conversion element. The control device identifies a scanning surface that is scanning the beam light on the basis of the sense signal of the second photoelectric conversion element amplified by the amplification circuit, and adjusts a pixel pitch of the electrostatic latent image.