Title:
画像形成装置
Document Type and Number:
Japanese Patent JP7358831
Kind Code:
B2
Abstract:
An image forming apparatus includes an image forming portion, a high-voltage generation circuit, a current detection portion and a control portion. The image forming portion includes an image carrying member, a charging device, an exposure device and a developing device which includes a developer carrying member for carrying a two-component developer. The control portion can perform a transfer memory prediction mode that includes a step of estimating, when a first reference image is formed, the level of occurrence of transfer memory based on the direct-current component of a development current flowing through the developer carrying member and a step of measuring, when the measured direct-current component of the development current is larger than a predetermined value, the amount of charge of the toner within the developing device and estimating the cause of occurrence of the transfer memory based on the measured amount of charge of the toner.
Inventors:
Tamotsu Shimizu
Takahiro Ohkubo
Mitsuhiro Hashimoto
Kazuhiro Nakachi
Shiro Kaneko
Takahiro Ohkubo
Mitsuhiro Hashimoto
Kazuhiro Nakachi
Shiro Kaneko
Application Number:
JP2019147682A
Publication Date:
October 11, 2023
Filing Date:
August 09, 2019
Export Citation:
Assignee:
Kyocera Document Solutions Inc.
International Classes:
G03G15/08; G03G15/00; G03G15/06
Domestic Patent References:
| JP6317948A | ||||
| JP2010101986A | ||||
| JP2018120219A | ||||
| JP2019086695A |
Attorney, Agent or Firm:
Patent Attorney Corporation Sano Patent Office