Abstract: The object of the present invention is to provide a toner which has sufficiently high chargeability and less toner spent to a carrier or the like even when several tens of thousands of image sheets are output, is capable of keeping high-charge property and flowability without causing substantial background smear or toner fogging, excels in low-temperature fixing property and hot-offset property, and has a wide range of fixing temperature as well as to provide a developer, an image forming apparatus, a process cartridge, and an image forming method using the toner for developing electrostatic images. The toner of the present invention comprises a colorant, and a resin, and a fluoride compound, in which the fluoride compound exists on the surfaces of toner particles, and the atomic number ratio (F/C) of fluoride atoms to carbon atoms existing on the surfaces of the toner particles is 0.010 to 0.054.

Abstract: A toner which includes a toner material, wherein the toner satisfies the following formula: 0° C.??Tm?20° C. where ?Tm represents Tma (° C.)?Tmb (° C.), Tma (° C.) is ½ flown-out temperature of the toner by a capillary type flow tester, and Tmb (° C.) is ½ flown-out temperature of a melt kneaded mixture of the toner by the capillary type flow tester, and wherein Tma is from 130° C. to 200° C.

Abstract: A stable condition for a printing operation regarding an apparatus having a printer unit and a battery unit, eliminating problems related to lack of a battery power during the printing operation performed by the battery, specifically for a portable apparatus using the battery, is obtained by an apparatus having the printer unit in which the printing operation is performed by processing data inputted from outside an embodiment thereof and/or data stored therein, in which the apparatus having the printer unit can be activated by the battery and perform communication with the battery so that, based on received information related to the remaining power of the battery as well as calculating the printing enabling power based on, for example, temperatures outside and/or inside the apparatus and the amount of data to be printed out, the remaining power of the battery is compared with the printing enabling power and, if the remaining power of the battery is lower than the printing enabling power, then a condition of

Abstract: The object of the present invention is to provide a developer having a sharp charge amount distribution and bringing out high-quality image without substantially smearing a charging unit, developing units, a photoconductor, and an intermediate transferring member by the developer, namely, a developer capable of providing an appropriate image density and exhibiting extremely little background smear even when used over a long period of time and repeatedly used for a number of sheets of paper as well as to provide an image forming apparatus for electrophotography using the developer.

Abstract: It is an object of the present invention to provide a toner that can sustain favorable transferability and cleaning ability for prolonged periods; prevent photoconductor filming; exhibit no variation in image nonuniformity or external additive immersion induced by developer agitation at the time of use; excels in stability with flowability and charge stability over prolonged periods. Therefore, provided is the toner of which the quantity of aggregate of residual external additives found on the sieve of 635-mesh and 452 cm2 of mesh area, after 0.2 g of the toner on the sieve is blasted with air at a blow pressure of 0.2 MPa from 160 mm above the sieve while being air-suctioned at a suction force of 5 mmHg, and then air-suctioned at a suction force of 20 mmHg, is 4,500 or less and 5 or more.

Abstract: The object of the present invention is to provide a toner which is excellent in shelf stability for a long term by producing the toner through controlling the dispersion condition of the wax around the toner surface and through improving, not only the off-set resistance of the toner for rendering the fixing properties of the toner advantageous, but also the blocking resistance of the toner, wherein the toner contains a binder resin, a colorant, and a wax, wherein the amount of the wax is 3% by mass to 21% by mass, and the amount of the wax which is present in the portion of the toner particle which is in the range of from the outermost surface to the depth of 0.3 ?m in the toner particle is in a specified range, and at least a part of the wax is present as plural individual wax dispersion particles involved in the toner particles.

Abstract: A toner for an image forming apparatus having a volume average diameter of from 2 to 8 ?m is manufactured by reacting an aqueous dispersion comprising at least one pigment, a polymer and/or a mixture of monomers to form fine toner particles wherein the amount of fine particles having a diameter of one-half the average number diameter are present in an amount of 20% by number or less, a toner cartridge containing the toner and a method for using the toner.

Abstract: A toner containing toner particles having a core-shell structure containing a binder resin, a colorant and a release agent. The toner particles are prepared by dissolving or dispersing at least one of the binder resin and a precursor thereof in an organic solvent or a polymeric monomer and reacting the resultant in an aqueous medium for reaction, wherein the toner satisfies the following relationship: ?Tm=Tm1?Tm2>10 ° C., wherein Tm1 represents half efflux temperature of the toner and Tm2 represents half efflux temperature of a toner which is prepared by melting and kneading the toner particles and wherein a content of the release agent existing close to the surface portion of the toner particles is from 7 to 30% by volume based on an entire portion close to the surface portion of the toner particles when the content is determined by Fourier Transform Infrared Spectroscopy Attenuated Total Reflection (FTIR-ATR) method.

Abstract: A toner which is negatively charged to develop an electrostatic latent image is provided that contains a colorant; and a binder resin, wherein the toner has an acid value of from 5 to 20 mg KOH/g and an amine value of from 0.5 to 10 mg KOH/g.

Abstract: A toner including toner particles including a binder resin, a colorant, and an inorganic particulate material present on a surface of the toner particles. The toner particles have a surface roughness (Ra) of from 1 to 30 nm, a standard deviation of the surface roughness of from 10 to 90 nm and include 1 to 20 convexities per 1 ?m, which have a height not less than 10 nm.

Abstract: A stable condition for a printing operation regarding an apparatus having a printer unit and a battery unit, eliminating problems related to lack of a battery power during the printing operation performed by the battery, specifically for a portable apparatus using the battery, is obtained by an apparatus having the printer unit in which the printing operation is performed by processing data inputted from outside an embodiment thereof and/or data stored therein, in which the apparatus having the printer unit can be activated by the battery and perform communication with the battery so that, based on received information related to the remaining power of the battery as well as calculating the printing enabling power based on, for example, temperatures outside and/or inside the apparatus and the amount of data to be printed out, the remaining power of the battery is compared with the printing enabling power and, if the remaining power of the battery is lower than the printing enabling power, then a condition of

Abstract: A toner for developing an electrostatic image, includes: a colorant; and a binder resin. The toner has a particle including at least one pore having a diameter of 10 nm or over, and a porosity thereof is in a range from 0.01 to 0.60.

Abstract: A toner for electrophotography contains a binder resin, a colorant and a releasing agent and has a viscosity, a storage modulus (G′) and a loss modulus (G″), in which the viscosity is 1×103 Pa.s or more and a loss tangent (tan &dgr;) as the ratio of G′ to G″ is 0.4 or more at temperatures from 140° C. to 170° C.

Abstract: A stable condition for a printing operation regarding an apparatus having a printer unit and a battery unit, eliminating problems related to lack of a battery power during the printing operation performed by the battery, specifically for a portable apparatus using the battery, is obtained by an apparatus having the printer unit in which the printing operation is performed by processing data inputted from outside an embodiment thereof and/or data stored therein, in which the apparatus having the printer unit can be activated by the battery and perform communication with the battery so that, based on received information related to the remaining power of the battery as well as calculating the printing enabling power based on, for example, temperatures outside and/or inside the apparatus and the amount of data to be printed out, the remaining power of the battery is compared with the printing enabling power and, if the remaining power of the battery is lower than the printing enabling power, then a condition of