Image forming apparatus and setting method

The image forming apparatus maintains toner fluidity by using a controlled electric field to manage fluororesin particles, addressing the separation issue and preventing toner deterioration in single-component developers.

JP2026028393APending Publication Date: 2026-02-20KYOCERA DOCUMENT SOLUTIONS INC
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Patent Information

Application Number
JP2024130764
Authority / Receiving Office
JP · JP
Patent Type
Applications
Current Assignee / Owner
Filing Date
2024-08-07
Publication Date
2026-02-20

AI Technical Summary

Technical Problem

In image forming devices using a single-component developer, fluororesin particles separate from the toner, leading to decreased fluidity and increased susceptibility to toner deterioration due to increased load at the contact point between the developer layer and the regulating member.

Method used

An image forming apparatus with a developing member, regulating member, opposing member, drive unit, and control unit that adjusts a specific electric field to attract components of the single-component developer, thereby maintaining toner fluidity by setting a specific voltage based on torque applied to the developing member.

Benefits of technology

The solution effectively suppresses a decrease in toner fluidity by reducing the separation of fluororesin particles from the toner, preventing toner deterioration and maintaining optimal developer layer conditions.

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Abstract

To provide an image forming apparatus capable of suppressing a decrease in fluidity of toner, and a setting method.SOLUTION: The image forming apparatus includes a developing roller 44 that conveys a one component developer containing a toner and fluorocarbon resin particles to a facing area R1 and supplies the toner conveyed to the facing area R1 to a photosensitive drum 31 in response to application of a developing bias voltage, a layer thickness regulating blade 45 that comes into contact with a developer layer formed on an outer circumferential surface of the developing roller 44 and regulates a layer thickness of the developer layer, and a facing roller 46 that forms a specific electric field for attracting components of the one component developer between the facing roller 46 and the developing roller 44 in response to application of a specific voltage.SELECTED DRAWING: Figure 3
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Citation Information

Patent Citations

  • Positive charge type toner for nonmagnetic monocomponent development

    JP2009180910A