Abstract: A carrier for developing an electrostatic latent image includes a core material particle and a resin layer covering a surface of the core material particle. The resin layer includes a resin and at least one kind of a fine particle. At least one kind of the fine particles includes a chargeable fine particle. The chargeable fine particle has a long diameter of 400 to 900 nm. The chargeable fine particle has a shape factor SF-1 of 160 to 250.

Abstract: A carrier for developing an electrostatic latent image includes a core material particle and a resin layer covering a surface of the core material particle. The resin layer includes a resin and at least one kind of a fine particle. At least one kind of the fine particles includes a chargeable fine particle. The chargeable fine particle has a long diameter of 400 to 900 nm. The chargeable fine particle has a shape factor SF-1 of 160 to 250.

Abstract: A developing device, including: a developer containing toner and carrier; and developer bearer configured to have surface thereof bear the developer and endlessly move, and to develop latent image over surface of latent image bearer by supplying toner in developer to latent image in developing region facing the latent image bearer, wherein carrier contains fine particles, value X in volume resistivity R (=10X) (?·cm) of carrier is 11.5-16.0, developer bearer includes: magnetic field generating unit including a plurality of magnetic poles; and developing sleeve having a cylindrical shape enclosing magnetic field generating unit, and configured to bear developer over outer circumferential surface of cylindrical shape by magnetic force of the magnetic field generating unit and perform surface moving by rotating relative to developing device body, and developing device includes developing sleeve voltage applying unit configured to apply AC component-containing voltage to developing sleeve.

Abstract: Provided is an electrostatic latent image developing white toner, including: a white toner including at least a binder resin, a white pigment, and a release agent; and a magnetic carrier including at least a core material, and a coating layer coating the core material and made of a coating resin and conductive particles, wherein Ra of the magnetic carrier is in a range of from 0.50 ?m to 1.00 ?m, and a bulk density of the magnetic carrier is in a range of from 2.08 g/cm3 to 2.24 g/cm3.

Abstract: A carrier includes a core and a covering layer covering the core and including at least carbon black and a filler. The maximum height Ry of the surface of the carrier is from 4.0 ?m to 5.0 ?m.

Abstract: A carrier includes a resin layer including Al and Sn and covering the surface of the carrier. A detectable amount of Al is from 1.0% to 12.1% by atom and a ratio (Al/Sn) of the detectable amount of Al to that of Sn is from 2.0 to 50.0 when the carrier is subjected to an X-ray photoelectron spectroscopic (XPS) analysis.

Abstract: Carrier for image forming includes a core material particle including a magnetic material and a coating layer disposed on the surface of the core material particle, the coating layer including a resin, carbon black, an inorganic particulate A, and an inorganic particulate B. The carbon black has a concentration gradient along a thickness direction of the coating layer with a concentration from high to low toward a surface of the coating layer while the inorganic particulate A has a concentration gradient along a thickness direction of the coating layer with a concentration from low to high toward the surface of the coating layer. The volume ratio of the carbon black is 0-30 percent at a depth range of 0.0-0.1 ?m from the surface of the coating layer. The inorganic particulate A is electroconductive with a powder specific resistance of 200 ?·cm or less.

Abstract: A carrier for developing electrostatic latent images is provided. The carrier includes a magnetic core particle and a resin layer coating a surface of the magnetic core particle. The resin layer includes a particulate material A having a volume average particle diameter (a) and a particulate material B having a volume average particle diameter (b). The volume average particle diameter (a) of the particulate material A is the largest among volume average particle diameters of all particulate materials included in the resin layer, and an inequation 100?(a)/(b)?5 is satisfied. The particulate material A is barium sulfate.

Abstract: A carrier is provided. The carrier includes a magnetic core particle and a resin layer coating a surface of the magnetic core particle. The resin layer includes a resin, a conductive particle including tungsten tin oxide, and a chargeable filler.

Abstract: Provided is an electrostatic latent image developing white toner, including: a white toner including at least a binder resin, a white pigment, and a release agent; and a magnetic carrier including at least a core material, and a coating layer coating the core material and made of a coating resin and conductive particles, wherein Ra of the magnetic carrier is in a range of from 0.50 ?m to 1.00 ?m, and a bulk density of the magnetic carrier is in a range of from 2.08 g/cm3 to 2.24 g/cm3.

Abstract: A carrier for developing electrostatic latent images is provided. The carrier includes a magnetic core particle and a resin layer coating a surface of the magnetic core particle. The resin layer includes a particulate material A having a volume average particle diameter (a) and a particulate material B having a volume average particle diameter (b). The volume average particle diameter (a) of the particulate material A is the largest among volume average particle diameters of all particulate materials included in the resin layer, and an inequation 100?(a)/(b)?5 is satisfied. The particulate material A is barium sulfate.

Abstract: A developing device, including: a developer containing toner and carrier; and developer bearer configured to have surface thereof bear the developer and endlessly move, and to develop latent image over surface of latent image bearer by supplying toner in developer to latent image in developing region facing the latent image bearer, wherein carrier contains fine particles, value X in volume resistivity R (=10X) (?·cm) of carrier is 11.5-16.0, developer bearer includes: magnetic field generating unit including a plurality of magnetic poles; and developing sleeve having a cylindrical shape enclosing magnetic field generating unit, and configured to bear developer over outer circumferential surface of cylindrical shape by magnetic force of the magnetic field generating unit and perform surface moving by rotating relative to developing device body, and developing device includes developing sleeve voltage applying unit configured to apply AC component-containing voltage to developing sleeve.

Abstract: A carrier is provided. The carrier includes a magnetic core particle and a resin layer coating a surface of the magnetic core particle. The resin layer includes a resin, a conductive particle including tungsten tin oxide, and a chargeable filler.

Abstract: Carrier for image forming includes a core material particle including a magnetic material and a coating layer disposed on the surface of the core material particle, the coating layer including a resin, carbon black, an inorganic particulate A, and an inorganic particulate B. The carbon black has a concentration gradient along a thickness direction of the coating layer with a concentration from high to low toward a surface of the coating layer while the inorganic particulate A has a concentration gradient along a thickness direction of the coating layer with a concentration from low to high toward the surface of the coating layer. The volume ratio of the carbon black is 0-30 percent at a depth range of 0.0-0.1 ?m from the surface of the coating layer. The inorganic particulate A is electroconductive with a powder specific resistance of 200 ?·cm or less.

Abstract: A carrier includes a core and a covering layer covering the core and including at least carbon black and a filler. The maximum height Ry of the surface of the carrier is from 4.0 ?m to 5.0 ?m.

Abstract: A carrier includes a resin layer including Al and Sn and covering the surface of the carrier. A detectable amount of Al is from 1.0% to 12.1% by atom and a ratio (Al/Sn) of the detectable amount of Al to that of Sn is from 2.0 to 50.0 when the carrier is subjected to an X-ray photoelectron spectroscopic (XPS) analysis.

Abstract: An image forming apparatus includes an image forming unit for forming an image on a sheet, mode setting unit for setting a test mode for a detection of a cause for a defect in the formed image, a control unit for causing the image forming means to form a plurality of sample images by changing operating conditions of the image forming unit when the test mode is set by the mode setting unit, an input unit for manually inputting a result of comparison of the plurality of sample images and display unit, wherein the control unit determines the particulars of the detection for the cause of the defect in the formed image or contents of the test mode to be subsequently carried out in response to an input of the input unit and, at the same time, causes the display unit to perform a display of the cause for the defect in the formed image or a display of the contents of the test mode to be subsequently carried out.

Abstract: An image forming apparatus includes image an bearing member or members; a movable recording material carrying member for carrying a recording material, with an image being transferred at a transfer position from the image bearing member or members onto a recording material carried on the recording material carrying member; and there are a plurality of recesses extending in a direction of movement of the recording material carrying member, provided on the surface of the recording material carrying member that carries the recording material.

Abstract: The present invention provides an image forming apparatus comprising an image bearing member, and a recording material bearing member for bearing a recording material to convey the recording material to a transfer station where an image is transferred from the image bearing member onto the recording material borne on the recording material bearing member. The recording material bearing member is capable of bearing a plurality of recording materials simultaneously at different positions thereon. The images can be successively transferred onto first and second surfaces of each recording material, and, when images are formed on the second surfaces of the plurality of recording materials, during a time period in which an area of the recording material bearing member with which the first surface of the recording material was previously contacted is passing through at least the transfer position without bearing the recording material, a spacer particle layer is formed between the image bearing member and the area.

Abstract: An image forming apparatus includes a movable image carrier, and a plurality of developing devices for developing a latent image formed on the image carrier. The plurality of developing devices contain developing agents of different colors and are arranged in the direction of movement of the image carrier. The plurality of developing devices are arranged in an ascending order of the visual sensitivity of the colors of the developing agents from the upstream side in the direction of movement of the image carrier, for example, in one aspect cyan, magenta, yellow and black developing devices may be sequentially arranged from an upstream side to a downstream side and operated in an order of cyan, magenta, yellow and black.