摘要:
A toner containing a binder, a colorant, and a wax having a molecular chain consisting of C-H bond and C-C bond, wherein the mass reduction of the wax at 165°C is 10% by mass or less, and the total amount of the wax in the toner measured by a DSC method is 1% by mass to 8% by mass, wherein a ratio, Sbet/SF of a BET specific surface area (Sbet) of the toner to an average circularity (SF) of the toner is 1.0 m 2 /g or more to less than 3.6 m 2 /g, wherein the toner is obtained through a process which comprises at least emulsifying or dispersing a toner material liquid in an aqueous medium containing a surfactant, and wherein the toner material liquid is a liquid containing toner-forming materials which comprise at least the binder, the colorant and the wax.
摘要:
An image forming apparatus comprising: a latent electrostatic image bearing member; a charging unit configured to uniformly charge a surface of the image bearing member; an exposing unit configured to form a latent electrostatic image on the surface of the charged image bearing member; a developing unit configured to develop the latent electrostatic image formed on the surface of the image bearing member by supplying a toner to form a visible image; a transferring unit configured to transfer the visible image formed on the surface of the image bearing member to a recording medium; a fixing unit configured to fix the visible image on the recording medium by application of at least one of heat and pressure; a cleaning unit configured to clean a residual toner on the image bearing member; and a toner replenishing device configured to replenish the toner to the developing unit, wherein the toner is replenished by the toner replenishing device comprising a pump configured to supply the toner and a toner container arranged in conjunction with the pump, and wherein the toner comprises a binder resin, a colorant and a releasing agent and has a dynamic friction coefficient of 0.15 to 0.35.
摘要:
The object is to provide a toner which can be smoothly replrenished by a toner replenishing device using a powder pump even when the toner containes a releasing agent, and an image forming apparatus using the toner. There is provided a toner, which comprises a binder resin, a colorant and a releasing agent, has a dynamic friction coefficient of 0.15 to 0.35, and is replenished by the toner replenishing device having a powder pump configured to automatically supply the toner and a toner container arranged in conjuction with the powder pump so as to develop a latent electrostatic image on a image bearing member.
摘要:
A toner including toner particles including a binder resin containing at least one polyester resin comprising an inorganic tin (II) compound and an external additive including a particulate inorganic material having a volume average particle diameter greater than 70 nm and less than 300 nm. The binder resin preferably includes a polyester resin having a weight average molecular weight of from 5,000 to 50,000 and another resin having a weight average molecular weight of from 200,000 to 400,000. A developer including the toner; and a developing device (4), an image forming apparatus (500) and a process cartridge (600), which form toner images using the toner are also provided.