Loading patent…
AssigneeRicoh Company, Ltd.
InventorsEiji Shimojo, Haruji Mizuishi, Tokuya Ojimi, Masanori Kawasumi, Takuzi Yoneda, Ken Amemiya, Takatsugu Fujishiro, Hiroshi Ono, Toshio Koike, Masami Tomita, Yuji Arai, Takeshi Uchitani
Estimating the term…
An image forming apparatus that can prevent the generation of filming with the simplest possible configuration even if a plurality of photosensitive member linear velocities are provided and the AC frequency of the charge apparatus is fixed. A charge apparatus that charges by uniformly superimposing on a photosensitive member an alternate current bias voltage with a fixed frequency over a direct current bias voltage as the charge bias voltage; an exposure apparatus that exposes the surface of the charged photosensitive member based on image data, and writes a latent image; a developing apparatus that supplies toner to and makes visible the latent image formed on the surface of the photosensitive member; a transfer apparatus that transfers the visible image on the photosensitive member to a transfer medium; and a cleaning apparatus that cleans the surface of the photosensitive member after transfer. The image forming apparatus further comprises a filming removal mode that removes filming on the surface of the photosensitive member; and the filming removal mode is selected corresponding to the plurality of photosensitive member linear velocities.
An image forming apparatus having a plurality of photosensitive member linear velocities, comprising:
A toner supplied in the developing process of a image forming apparatus of an electronic copier system, wherein the volume average particle diameter is 3 to 8 μm, and the ratio (Dv/Dn) of the volume average particle diameter (Dv) and the number average particle diameter (Dn) is in the range of 1.00 to 1.40;
Dependencies are inferred from the claim text.