A development device and an image forming device

Title:

A development device and an image forming device

Document Type and Number:

Japanese Patent JP5979593

Kind Code:

B2

Abstract:

A developing device, including: a developer bearing member, which is disposed opposite to an electrostatic latent image bearing member and which bears thereon a developer for developing an electrostatic latent image formed on the electrostatic latent image bearing member and conveys the developer to a developing region, wherein the developer includes a toner and a carrier, the toner containing: a toner base containing a binder resin and a colorant; and an external additive, wherein the external additive contains coalescent particles each made up of a plurality of coalescing primary particles, and wherein a work function Wc of the carrier and a work function Ws of the developer bearing member satisfy a relationship of the following formula (1): Ws−Wc≧0.4 eV (1).

Inventors:

Shingo Sakashita
Junichi Awamura
Nagatomo Yasuyasu
Tomoyuki Kojima
Murayama Tomoki

Application Number:

JP2012200356A

Publication Date:

August 24, 2016

Filing Date:

September 12, 2012

Export Citation:

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