Is a
Patent attributes
Current Assignee
Patent Jurisdiction
Patent Number
Date of Patent
December 16, 2008
Patent Application Number
11372142
Date Filed
March 10, 2006
Patent Primary Examiner
Patent abstract
An image forming apparatus includes a container configured to contain two-component developer including toner particles and carrier beads. The image forming apparatus further includes a developer carrying member configured to carry thereon the two-component developer and having a magnetic field generating member and a plurality of grooves having a generally V-like shape satisfying h≧50+R/2+{(R/2)/sin(θ/2)}, in which h represents a depth of the grooves, θ represents an opening angle of the grooves, and R represents a volume-average diameter of the carrier beads.
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