公开(公告)号：US20190302670A1

公开(公告)日：2019-10-03

申请号：US16278650

申请日：2019-02-18

Applicant: KONICA MINOLTA, INC.

Inventor： Kazuya KITAMURA

IPC: G03G15/00

Abstract: An image forming device that forms an image on a sheet under an operating condition set according to a type of the sheet, includes a hardware processor that: accepts a manual input specifying any one of a plurality of types; stores manual mode setting information and automatic mode setting information; detects which of a plurality of types included in an automatic type group the type of the sheet is based on an output of a sensor; and sets an operating condition value corresponding to a type detected out of the operating condition values indicated by the automatic mode setting information as the operating condition in an automatic mode, and sets an operating condition value corresponding to the type specified by the manual input out of the operating condition values indicated by the manual mode setting information as the operating condition in a manual mode.

公开(公告)号：US20190294094A1

公开(公告)日：2019-09-26

申请号：US16436294

申请日：2019-06-10

Applicant: Konica Minolta, Inc.

Inventor： Tatsutoshi YAMADA ,  Kazuya KITAMURA

IPC: G03G15/00 ,  G03G15/01 ,  G03G21/20

Abstract: Provided is an image formation device including a photoreceptor configured to carry a toner image and a developer configured to form the toner image on a surface of the photoreceptor and configured such that the developer is a replaceable development unit, the image formation device including: a development bias application section configured to apply a development bias to between the photoreceptor and the developer; a stabilization control section configured to perform image stabilization control of determining a development bias value to be used in future by changing the development bias while measuring a density of the toner image formed by the developer, thereby obtaining the toner image with a target density; and a life determination section configured to determine expiration of use of the development unit when the development bias value determined by the stabilization control falls outside a preset acceptable range.

公开(公告)号：US20180004139A1

公开(公告)日：2018-01-04

申请号：US15619838

申请日：2017-06-12

Applicant: Konica Minolta, Inc.

Inventor： Tatsutoshi YAMADA ,  Kazuya KITAMURA

IPC: G03G15/00 ,  G03G15/01 ,  G03G21/20 ,  G03G15/06 ,  G03G15/043

CPC classification number: G03G15/5041 ,  G03G15/0152 ,  G03G15/043 ,  G03G15/065 ,  G03G15/5058 ,  G03G15/5062 ,  G03G15/55 ,  G03G21/20 ,  G03G2215/00569 ,  G03G2215/0164 ,  G03G2221/1624

Abstract: Provided is an image formation device including a photoreceptor configured to carry a toner image and a developer configured to form the toner image on a surface of the photoreceptor and configured such that the developer is a replaceable development unit, the image formation device including: a development bias application section configured to apply a development bias to between the photoreceptor and the developer; a stabilization control section configured to perform image stabilization control of determining a development bias value to be used in future by changing the development bias while measuring a density of the toner image formed by the developer, thereby obtaining the toner image with a target density; and a life determination section configured to determine expiration of use of the development unit when the development bias value determined by the stabilization control falls outside a preset acceptable range.

公开(公告)号：US20180135958A1

公开(公告)日：2018-05-17

申请号：US15802572

申请日：2017-11-03

Applicant: Konica Minolta, Inc.

Inventor： Kazuya KITAMURA

IPC: G03G15/00

CPC classification number: G03G15/5037 ,  G01B7/06 ,  G03G5/043 ,  G03G15/0216 ,  G03G15/0266 ,  G03G15/0283 ,  G03G15/043 ,  G03G15/553 ,  G03G21/203 ,  G03G2215/025

Abstract: An image forming apparatus includes a photoconductor, a charging roller for charging the photoconductor, a current sensor for detecting a value of current flowing through the photoconductor or the charging roller as a result of application of voltage to the charging roller, an acquisition sensor for acquiring an environment value representing an environment state inside the image forming apparatus, and a processor configured to estimate a film thickness of the photoconductor, based on a value of current detected by the current sensor when a state in which the environment value falls within a predetermined range continues for a predetermined time or longer.