Abstract: An image forming apparatus mounted with a toner cartridge having a memory unit includes a toner cartridge which stores a plurality of control data depending on toner in the memory unit, an acquisition unit which selects one of the plurality of control data in the memory unit and acquires image formation-related information and a setting unit which sets image formation parameters on the basis of the image formation-related information.

Abstract: An image forming apparatus mounted with a toner cartridge having a memory unit includes a toner cartridge which stores a plurality of control data depending on toner in the memory unit, an acquisition unit which selects one of the plurality of control data in the memory unit and acquires image formation-related information and a setting unit which sets image formation parameters on the basis of the image formation-related information.

Abstract: An image forming apparatus mounted with a toner cartridge having a memory unit includes a toner cartridge which stores a plurality of control data depending on toner in the memory unit, an acquisition unit which selects one of the plurality of control data in the memory unit and acquires image formation-related information and a setting unit which sets image formation parameters on the basis of the image formation-related information.

Abstract: An image forming apparatus includes an image forming unit including a developing device; a toner cartridge configured to supply a toner to the developing device; a toner supply agitating mechanism including a drive mechanism, and the toner supply agitating mechanism configured to agitate and to supply the toner in the toner cartridge; a load detection mechanism configured to detect a load of the drive mechanism; and an arithmetic control mechanism configured to control the drive mechanism based on the detected load, and the arithmetic control mechanism configured to execute a toner supply operation from the toner cartridge to the developing device.

Abstract: According to one embodiment, a developing agent containing a toner particle and an aggregate of a toner dust powder having a smaller volume average particle size than a volume average particle size of the toner particle and alumina is provided.

Abstract: According to an embodiment of the invention, an electrophotographic toner contains 100 parts by weight of a toner resin, from 0.01 to 10 parts by weight of a cyclodextrin compound, first silica having an average particle diameter of from 20 to 40 nm, and second silica having an average particle diameter of from 8 to 14 nm.

Abstract: An image forming apparatus mounted with a toner cartridge having a memory unit includes a toner cartridge which stores a plurality of control data depending on toner in the memory unit, an acquisition unit which selects one of the plurality of control data in the memory unit and acquires image formation-related information and a setting unit which sets image formation parameters on the basis of the image formation-related information.

Abstract: An image forming apparatus comprising a fixing portion provided with a cleaning member having a resinous covering layer comprising a resin which is of the same series as a binder resin and has an MI which is not less than 1.3 times as high as that of the binder resin, or the cleaning member being provided with a heating mechanism for heating the cleaning member as a layer of dirt that has been deposited thereon is increased to a predetermined thickness or as the layer of dirt and the surface temperature of the cleaning member become higher than a predetermined level.

Abstract: An image forming apparatus comprising a fixing portion provided with a cleaning member having a resinous covering layer comprising a resin which is of the same series as a binder resin and has an MI which is not less than 1.3 times as high as that of the binder resin, or the cleaning member being provided with a heating mechanism for heating the cleaning member as a layer of dirt that has been deposited thereon is increased to a predetermined thickness or as the layer of dirt and the surface temperature of the cleaning member become higher than a predetermined level.

Abstract: In an image forming apparatus having a toner recycle mechanism employing a two-components developing system, rotational torque of a stirring screw disposed within a developing device and capacity of a recycle toner within the developing device are detected. Where the rotational torque of stirring screw is elevated and the capacity of the recycle toner is increased, control operation for not changing a development bias voltage and lowering rotational speed of the stirring screw is executed. Where the rotational torque of the stirring screw is elevated and the capacity of the recycle toner is not increased, control operation for not changing rotational speed of the stirring screw is executed.

Abstract: In an image forming apparatus having a toner recycle mechanism employing a two-components developing system, rotational torque of a stirring screw disposed within a developing device and capacity of a recycle toner within the developing device are detected. Where the rotational torque of stirring screw is elevated and the capacity of the recycle toner is increased, control operation for not changing a development bias voltage and lowering rotational speed of the stirring screw is executed. Where the rotational torque of the stirring screw is elevated and the capacity of the recycle toner is not increased, control operation for not changing rotational speed of the stirring screw is executed.

Abstract: A developing material is obtained by performing melting and kneading steps, and then a milling step, for a particulate binder resin material having an average particle size of 250 to 600 &mgr;m and a magnetic powder having an apparent bulk density of 0.3 g/cm3 or more and a compacted bulk density of 2.5 g/cm3 or less.

Abstract: A negative conductive silica and an inorganic oxide are added to a negative magnetic toner so as to obtain a developing agent satisfactory in the rise of the charging and in the stability of charging over the entire life of the developing agent and capable of forming an image free from blurring and a defective transference.