发明授权
- 专利标题: Image forming apparatus
- 专利标题(中): 图像形成装置
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申请号: US09567988申请日: 2000-05-10
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公开(公告)号: US06345162B1公开(公告)日: 2002-02-05
- 发明人: Ichiro Ozawa , Yoshiaki Kobayashi , Masaru Hibino , Masanori Shida
- 申请人: Ichiro Ozawa , Yoshiaki Kobayashi , Masaru Hibino , Masanori Shida
- 优先权: JP11-132368 19990513; JP11-191515 19990706
- 主分类号: G03G1506
- IPC分类号: G03G1506
摘要:
The present invention relates to an image forming apparatus which has an image bearing member for bearing a latent image, charging device for charging the image bearing member by bringing ears of electrically conductive particles into contact with the image bearing member, developing device for visualizing the latent image formed on the image bearing member as a toner image by using a developer containing toner and carrier after the image bearing member has been charged by the charging device, a permeability of the carriers being different from a permeability of the electrically conductive particles, density control device for controlling density of the developer within the developing device, the density control device detecting a permeability of the developer, comparing a detected signal value based on the detected result with a reference value, and controlling the density of the developer on the basis of the comparison result, and reference value correcting device for correcting the reference value, the reference value correcting device estimating an amount of the electrically conductive particles that enter within the developing device, and correcting the reference value on the basis of the estimated result.