Patent ID: 8524436

Claim:
A developing device for developing an electrostatic latent image on an image bearing member, comprising: a developer bearing member to bear a developer including a transparent toner and a magnetic carrier to develop the electrostatic latent image on the image bearing member with the transparent toner at a development region in which the developer bearing member is opposed to the image bearing member, wherein the transparent toner includes a resin and a lubricant, and has a viscoelastic property such that a loss tangent (tan δ), which is defined as a ratio (G″/G′) of loss modulus (G″) to storage modulus (G′), has a peak at a temperature of from 80° C. to 160° C. and the peak has a height of not less than 3; a developer supplying passage having a developer supplying member to feed the developer in a first direction parallel to an axial direction of the developer bearing member to supply the developer to the developer bearing member; and a developer feeding passage having a developer feeding member to feed at least the developer, which has passed through the development region and is fed to the developer feeding passage, in a second direction parallel to the first direction, wherein the developer feeding passage is separated with a partition from the developer supplying passage at least at a central portion thereof in the first and second directions.