Patent ID: 7514196
Filing Date: 2009-04-07
Classification: G03G

Abstract:
1. A developing method for forming a predetermined toner image by allowing a magnetic monocomponent toner to jump to a photoconductor from a developing sleeve, and developing an electrostatic latent image formed on the photoconductor, wherein as the magnetic monocomponent toner, a toner having a volume center particle size which falls within a range from 6.0 to 7.8 μm, having the sphericity which falls within a range from 0.92 to 0.98, and setting a toner quantity having a volume particle size of 5.04 μm or less to a value which falls within a range from 2.5 to 10.0 volume % is used and, at the same time, assuming a toner quantity per unit area of the toner image as A, a following relationship formula (1) is satisfied and assuming the toner quantity per unit area of the toner thin layer formed on the developing sleeve as B, a following relationship formula (3) is satisfied