JP2009156915A5 - - Google Patents

Claims (9)

In an image forming method in which a toner image formed on a photoreceptor is primarily transferred onto an intermediate transfer member, and then the toner image on the intermediate transfer member is secondarily transferred onto a transfer material.
The intermediate transfer member has an elastic displacement of (Sb) of 0.10 to 1.00 μm when the maximum displacement with respect to a load of 9.8 × 10 ⁻⁵ N is (Sb) and the plastic displacement is (Ib). Deformation rate (Eb) (%) is Eb (%) = (Sb−Ib) × 100 / Sb ≧ 50,
The image formation is performed using at least the toner (C) having a transmittance of 50 to 98% and the toner (A) having a transmittance of 30% or less,
When the maximum displacement amounts of the toner (A) and the toner (C) with respect to the load of 9.8 × 10 ⁻⁵ N are (Sa) and (Sc), and the plastic displacement amounts are (Ia) and (Ic), respectively, Formula Ea (%) = (Sa−Ia) × 100 / Sa
Ec (%) = (Sc−Ic) × 100 / Sc
The elastic deformation rate (Ea) (%) of the toner (A) and the elastic deformation rate (Ec) (%) of the toner (C) represented by
0 <Ec−Ea ≦ 30 is satisfied,
The image forming method, wherein the toner image is formed on the intermediate transfer member so that the toner (A) is superimposed on the toner (C). The image forming method according to claim 1, wherein an elastic deformation rate (Eb) (%) of the intermediate transfer member is 50 ≦ Eb ≦ 80. The image forming method according to claim 1, wherein the toner (C) has an elastic deformation rate (Ec) (%) of 25 ≦ Ec ≦ 60. Dielectric loss tangent tanδc (50000Hz) The image forming method according to any one of claims 1 to 3, characterized in that it is 0.00100 to 0.00700 of the toner (C). 5. The dielectric loss tangent tan δa (50000 Hz) of the toner (A) and the dielectric loss tangent tan δc (50000 Hz) of the toner (C) satisfy 2.0 <tan δa / tan δc <10.0. The image forming method according to any one of the above. The toner (C) has an image processing resolution of 512 × 512 pixels (0.37 μm × 0.37 μm per pixel) in a circularity range of 0.200 to 1.000 measured by a flow type particle image analyzer. the image forming method according to any one of claims 1 to 5, characterized in that divided analyzed average circularity of the toner is 0.930 to 1.000. The surface roughness of the intermediate transfer member (Rz) is, the image forming method according to any one of claims 1 to 6, characterized in that a 1.0 to 25.0. The toner image formed on the photoreceptor is performed by a two-component developer of a developing device,
The image forming according to any one of claims 1 to 7, characterized in that the to the developing device is newly replenished a two-component type developer for replenishment, to discharge carriers becomes excessive from developing device Method. 9. The image forming method according to claim 8 , wherein the replenishing two-component developer contains 2 to 50 parts by mass of toner with respect to 1 part by mass of the carrier.