Patent application number | Description | Published |
20090155709 | TONER, VESSEL WITH THE TONER, DEVELOPER, IMAGE FORMING APPARATUS AND PROCESS CARTRIDGE AND IMAGE FORMING METHOD - Toner and a developer which are excellent in cleaning property and fixing property at low temperature, and capable of forming images with high quality are provided. A toner prepared by dispersing and/or emulsifying an oil phase or a monomer phase comprising a toner composition and/or a toner composition precursor in a water-based medium to granulate, wherein the toner has an average circularity of 0.925 to 0.970, and the toner composition and/or the toner composition precursor has a layered inorganic material in which at least a part of interlayer ions in the layered inorganic material has been exchanged with organic ions. | 06-18-2009 |
20110076607 | TONER, DEVELOPER, TONER ACCOMMODATING CONTAINER, PROCESS CARTRIDGE AND IMAGE FORMING METHOD - A toner including at least one polyester resin serving as a binder resin, a colorant, a releasing agent, and a fixing aid, wherein the fixing aid includes a fatty acid amide-based compound, and the fatty acid amide-based compound is at least one of a fatty acid amide compound having a mono- or higher valent amide bond and a fatty acid amide-based compound having a mono- or higher valent amino group or a hydroxyl group. | 03-31-2011 |
20110076612 | TONER, METHOD FOR PRODUCING THE SAME, AND DEVELOPER - A method for producing a toner, containing: dispersing, in an aqueous medium, an oil phase which contains an organic solvent, and a binder resin component contained in the organic solvent, where the binder resin component contains a crystalline polyester resin and an amorphous polyester resin; and removing the organic solvent from the dispersion to obtain the toner, in which the dispersing further contains heating and dissolving the crystalline polyester and the amorphous polyester in the organic solvent to obtain a solution, cooling the solution so as to recrystallize the crystalline polyester resin, and mechanically pulverizing the recrystallized crystalline polyester resin so as to obtain a crystalline polyester dispersion. | 03-31-2011 |
20110129773 | TONER, DEVELOPER, DEVELOPER CONTAINER, METHOD OF MANUFACTURING TONER, AND IMAGE FORMING METHOD - A toner including a binder resin comprising a modified polyester having an ester bond and a chemical bond other than the ester bond, and a crystalline polyester; and a release agent comprising a microcrystalline wax comprising a hydrocarbon having 20 to 80 carbon atoms which comprises 55 to 70% by weight of a linear hydrocarbon. The microcrystalline wax has an acid value of from 0.1 to 20 mgKOH/g and a melting point of from 65 to 90° C. The melting point is a temperature at which a local maximum endothermic peak is observed in a differential thermal curve measured by differential scanning calorimetry (DSC). The release agent is dispersed in the toner with a dispersion diameter of from 0.06 to 1.50 μm. | 06-02-2011 |
20110200929 | ELECTROSTATIC IMAGE DEVELOPING TONER AND TWO-COMPONENT DEVELOPER - The present invention provides an electrostatic image developing toner capable of improving the dispersibility of wax in the toner and superior in offset resistance and in storageability (heat-resistant storageability) at high temperatures, and a two-component developer which uses this electrostatic image developing toner. The electrostatic image developing toner includes: a binder resin, a colorant, and a release agent, wherein the binder resin contains a polyester resin, and a block copolymer which has a polyolefin backbone unit. | 08-18-2011 |
20110223532 | TONER AND DEVELOPER - A toner, comprising a colorant, a crystalline polyester resin, and an amorphous polyester resin, in which the crystalline polyester resin satisfies the following relations: | 09-15-2011 |
20110262856 | TONER CONTAINING CRYSTALLINE POLYESTER - A toner including a binder resin which contains a crystalline polyester resin and a non-crystalline polyester resin, wherein the crystalline polyester resin has at least two diffraction peaks in a range of 20°<2θ<25° as detected by X-ray diffraction measurement, and has a melting point which is 60° C. or higher but lower than 80° C., and wherein the diffraction peaks each have a half width which is less than 1.0°. | 10-27-2011 |
20110305986 | TONER, DEVELOPER, AND IMAGE FORMING METHOD - A toner containing a binder resin, a colorant, and a releasing agent, wherein the colorant contains a mixed crystal of a C. I. PIGMENT YELLOW 185 and a C. I. PIGMENT YELLOW 139, and wherein a mass ratio of the C. I. PIGMENT YELLOW 185 to the C. I. PIGMENT YELLOW 139 (mass of the C. I. PIGMENT YELLOW 185/mass of the C. I. PIGMENT YELLOW 139) in the toner is 95/5 to 50/50. | 12-15-2011 |
20120064445 | IMAGE FORMING APPARATUS AND TONER FOR DEVELOPING LATENT ELECTROSTATIC IMAGES - A toner which contains: toner base particles having Dv of 4.0-6.0 μm; and two or more additives on surfaces of the toner base particles, where the additives contains Additives A and B, wherein the toner base particles are obtained by the method containing: dispersing, in an aqueous medium, an oil phase in which at least one of a crystalline polyester resin and a non-crystalline polyester resin is contained in an organic solvent, to prepare a dispersion liquid; and removing the organic solvent from the dispersion liquid, and wherein the Additive A has the largest average primary particle diameter in the additives and has CA of 5-10% where the CA is determined by the formula A, and the Additive B has the smallest average primary particle diameter in the additives and has CB of 45-100% where the CB is determined by the formula B. | 03-15-2012 |
20120288299 | TONER, PROCESS CARTRIDGE, AND IMAGE FORMING APPARATUS - A set of toners including yellow, cyan, magenta, and black toner, each of which containing a binder resin containing a crystalline resin and a non-crystalline resin, a releasing agent, and a corresponding coloring agent, wherein the following relationship is satisfied: 0.811-15-2012 | |
20130022371 | TONER FOR ELECTROSTATIC CHARGE DEVELOPMENT - To provide a toner, which contains a binder resin, a colorant, and a releasing agent, wherein the binder resin contains a low molecular weight resin component, where the low molecular weight resin component has a resin softening coefficient (A), represented by the following formula (1), satisfying A>0.165, and has storage elastic modulus (dyne/cm | 01-24-2013 |
20130130171 | TONER - A toner including a core particle, an inner shell layer covering the core, and an outer shell layer covering the inner shell layer is provided. The core particle includes a resin P. The inner shell layer includes fine particles of a resin A. The outer shell layer includes fine particles of a resin B. The toner satisfies the following formulae (1) to (3): | 05-23-2013 |
20130196260 | TONER, DEVELOPER AND IMAGE FORMING APPARATUS - A toner including: a binder resin containing a non-crystalline resin and a crystalline resin; a colorant; and, a releasing agent, wherein the releasing agent has a melting point of 55° C. to 80° C., and wherein the toner satisfies the following Expressions 1 and 2: (Expression 1): 20,000 Pa·s≦G | 08-01-2013 |
20130224648 | ELECTROSTATIC IMAGE DEVELOPING TONER PARTICLES AND DEVELOPER - Electrostatic image developing toner particles including: a crystalline polyester resin; a non-crystalline polyester resin; a releasing agent; and a colorant, wherein the electrostatic image developing toner particles have a glass transition temperature of 40° C. to 60° C. where the glass transition temperature is measured with a differential scanning calorimeter (DSC), and wherein the electrostatic image developing toner particles have an adhesive force between the toner particles of 1.4 mN to 2.2 mN where the adhesive force between the toner particles is measured after the electrostatic image developing toner particles have been stored at 50° C. | 08-29-2013 |
20130243488 | TONER, TWO-COMPONENT DEVELOPER, AND IMAGE FORMING APPARATUS - A toner including: toner base particles; and external additive, the toner base particles each comprising binder resin and colorant, wherein the external additive comprises coalesced particles, the coalesced particles are each a non-spherical secondary particle in which primary particles are coalesced together, and an index of a particle size distribution of the coalesced particles is expressed by Formula (1): | 09-19-2013 |
20130244155 | TONER, TWO-COMPONENT DEVELOPER AND IMAGE FORMING APPARATUS - A toner including: toner base particles; and an external additive, the toner base particles each comprising a binder resin and a colorant, wherein the external additive comprises non-spherical particles and spherical particles, wherein the non-spherical particles are each a secondary particle in which spherical primary particles are coalesced together, and wherein the non-spherical particles and the spherical particles in the external additive satisfy a relationship expressed by the following formula (1): | 09-19-2013 |
20130244156 | TONER FOR DEVELOPING ELECTROSTATIC IMAGE, TWO-COMPONENT DEVELOPER AND IMAGE FORMING APPARATUS - A toner for developing an electrostatic image, including: toner base particles each including a binder resin and a releasing agent; and inorganic fine particles, wherein the toner includes the inorganic fine particles as an external additive on a surface of the toner base particle, wherein the toner base particles have a BET specific surface area of 2.5 m | 09-19-2013 |
20130244158 | TONER SET, DEVELOPER SET, AND IMAGE FORMING APPARATUS - A toner set, including: a transparent toner including a binder resin a, a releasing agent a and no colorant; and one or more color toners, each including a binder resin b, a colorant b and a releasing agent b, wherein the binder resin a includes a non-crystalline resin α and a crystalline resin α, the binder resin b includes a non-crystalline resin β and a crystalline resin β, the releasing agent a has an average particle diameter as a long diameter of 0.2 μm to 2.0 μm, and there is a relationship of 1 | 09-19-2013 |
20140072349 | DEVELOPING DEVICE AND IMAGE FORMING APPARATUS - A developing device, including: a developer bearing member, which is disposed opposite to an electrostatic latent image bearing member and which bears thereon a developer for developing an electrostatic latent image formed on the electrostatic latent image bearing member and conveys the developer to a developing region, wherein the developer includes a toner and a carrier, the toner containing: a toner base containing a binder resin and a colorant; and an external additive, wherein the external additive contains coalescent particles each made up of a plurality of coalescing primary particles, and wherein a work function Wc of the carrier and a work function Ws of the developer bearing member satisfy a relationship of the following formula (1): | 03-13-2014 |
20140140731 | TONER, DEVELOPER, IMAGE FORMING APPARATUS AND IMAGE FORMING METHOD - A toner including: a binder resin; a releasing agent; and a colorant, wherein the binder resin contains a crystalline polyester resin and a non-crystalline polyester resin, wherein the releasing agent has an endothermic peak temperature of 60° C. to 80° C. at the second temperature rising in differential scanning calorimetry, and wherein the releasing agent is an ester wax which satisfies the following expressions (1) and (2): 1.1 Pa·s≦η*a≦2.0 Pa·s . . . Expression (1) 0.001≦η*b/η*a≦1.00 . . . Expression (2) where in Expressions (1) and (2), η*a denotes a complex viscosity (Pa·s) determined by measuring a dynamic viscoelasticity of the releasing agent at a measurement frequency of 6.28 rad/s, and η*b denotes a complex viscosity (Pa·s) determined by measuring a dynamic viscoelasticity of the releasing agent at a measurement frequency of 62.8 rad/s. | 05-22-2014 |
20140220485 | TONER, DEVELOPER AND IMAGE FORMING APPARATUS - To provide a toner, which contains silica particles containing first silica particles, and second silica particles, wherein the toner is a toner produced by depositing the silica particles on surfaces of base particles, the first silica particles have an average primary particle diameter of 75 nm to 250 nm, the second silica particles have an average primary particle diameter of 10 nm to 50 nm, a mass ratio of the first silica particles to the base particles is 0.010 to 0.040, a mass ratio of the second silica particles to the base particles is 0.005 to 0.030, a liberation ratio of the silica particles from the toner by a ultrasonic vibration method is 5% by mass to 20% by mass, and an amount of particles having primary particle diameters of 30 nm or smaller in the silica particles librated from the toner by the ultrasonic vibration method is 20% by number or less. | 08-07-2014 |
20140234767 | ELECTROSTATIC CHARGE IMAGE DEVELOPING TONER - Provided is an electrostatic charge image developing toner, including: toner base particles including a polyester resin as a binder resin; and an external additive on the surface of the toner base particles. The external additive includes silica. The silica is produced by sol-gel method, and is aspherical. The percentage of change in the specific surface area of the toner when it is stored under high-temperature, high-humidity conditions is from 25% to 45%. | 08-21-2014 |
20140348545 | TONER HOUSING CONTAINER AND IMAGE FORMING APPARATUS - A toner housing container includes: a container body housing a toner; a conveying portion; a pipe receiving port; and an uplifting portion. Flow rate index of the toner measured by powder rheometer and represented by “flow rate index=(total energy at a rotation speed of 10 mm/s)/(total energy at a rotation speed of 100 mm/s)” is in a range of “1.8≦flow rate index≦6.5”. Container body includes protruding portion protruding from container body interior side of container opening portion toward one end of container body. Uplifting portion includes: uplifting wall surface extending from container body internal wall surface toward protruding portion; and curving portion curving to conform to protruding portion. When the toner housing container is mounted on the toner conveying device, the protruding portion is present between the curving portion and the toner receiving port of the conveying pipe being inserted. | 11-27-2014 |
20140348546 | TONER HOUSING CONTAINER AND IMAGE FORMING APPARATUS - Toner housing container includes: container body mountable on toner conveying device and housing toner supplied into toner conveying device; conveying portion provided in container body and conveying toner from longer direction one end of container body to other end at which container opening portion is provided; pipe receiving port provided at container opening portion and receiving conveying pipe fixed to toner conveying device; and uplifting portion to move toner conveyed by conveying portion toward toner receiving port of conveying pipe. Toner has loose apparent density of 0.28 g/cm | 11-27-2014 |