Patent application number | Description | Published |
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 |
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 |
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 |
20120064447 | TONER, DEVELOPER, IMAGE FORMING METHOD AND IMAGE FORMING APPARATUS - A toner containing toner particles, each toner particle containing: a releasing agent; a colorant; and a binder resin containing at least a crystalline polyester resin and a non-crystalline polyester resin, wherein in the case where a volume average particle diameter of the toner is defined as Dv, the toner contains a group of the toner particles having 4/5Dv, and a group of the toner particles having 6/5Dv, and wherein an endothermic value A of the crystalline polyester resin at a first temperature increase in DSC of the toner, an endothermic value B of the crystalline polyester resin at a first temperature increase in DSC of the group of the toner particle having 4/5Dv, and an endothermic value C of the crystalline polyester resin at a first temperature increase in DSC of the group of the toner particles having 6/5Dv satisfy the relation represented by the following formulas: | 03-15-2012 |
20120082926 | TONER, TONER SET, DEVELOPER, DEVELOPER SET, IMAGE FORMING APPARATUS, IMAGE FORMING METHOD, AND PROCESS CARTRIDGE - A toner comprising an amorphous polyester, a crystalline polyester that is forming domains in the toner, and a colorant that is being dispersed at least in the domains of the crystalline polyester. The toner may be obtained by dispersing an oil phase including the amorphous polyester or a precursor capable of producing the amorphous polyester, the crystalline polyester, the colorant, and an organic solvent, in an aqueous medium to prepare an O/W dispersion, the oil phase; and removing the organic solvent from the O/W dispersion. | 04-05-2012 |
20120122027 | TONER, PRODUCTION METHOD THEREOF, DEVELOPER AND IMAGE FORMING METHOD - To provide a toner, containing: a binder resin; a crystalline polyester resin; a colorant; and wax, wherein the toner has a fluidized powder characteristic value of 35% to 45%, and a BET specific surface area of 2.8 m | 05-17-2012 |
20120189951 | TONER AND DEVELOPER - A toner including: a binder resin component; crystal nucleating agent; releasing agent; and colorant, wherein the binder resin component contains a crystalline polyester resin and a non-crystalline polyester resin, the crystal nucleating agent is at least one of an aliphatic ester compound and an aliphatic amide compound each having a melting point of 60° C. or higher but lower than 150° C., and wherein the toner satisfies Expressions (I) and (II): | 07-26-2012 |
20120219896 | ELECTROSTATIC IMAGE FORMING TONER AND RESIN FOR TONER - An electrostatic image forming toner including: a colorant; a binder resin; and a releasing agent, wherein the binder resin contains at least two types of polyester resins A and B, wherein a difference of (T1/2−Tg) is 65° C. or more but less than 90° C., where T1/2 denotes a softening point of the electrostatic image forming toner and Tg denotes a glass transition temperature of the electrostatic image forming toner, and wherein the electrostatic image forming toner has a TMA compressive deformation rate (TMA %) at 50° C. which is 5% or less. | 08-30-2012 |
20120295193 | TONER AND DEVELOPER - To provide a toner, which contains a binder resin containing a crystalline resin and a non-crystalline resin, a colorant, and a releasing agent, wherein the toner has ½ flow onset temperature T½ of 120° C. to 135° C., and wherein a peak intensity ratio of an intensity of a peak derived from the crystalline resin and the releasing agent to an intensity of a peak derived from the binder resin as measured in FTIR-ATR is 0.10 to 0.20. | 11-22-2012 |
20130011778 | ELECTROPHOTOGRAPHIC TONER, METHOD FOR PRODUCING TONER, DEVELOPER AND IMAGE FORMING APPARATUS CONTAINING TONER - An electrophotographic toner obtained from a dispersion or emulsion liquid of an oil phase containing a toner material in an aqueous medium, the toner including: a binder resin, wherein the toner material includes: (A) an epoxy resin prepolymer; (B) an adduct of a dihydric phenol with a polyalkylene oxide; (C) a phenolic compound, or an alcohol compound, or both thereof; and (D) a carboxylic acid compound, and wherein the binder resin includes a resin obtained by allowing the (A), the (B), the (C) and the (D) to react with each other. | 01-10-2013 |
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 |
20130059247 | TONER AND DEVELOPER - To provide a toner, which contains: a non-crystalline polyester resin A obtained through a reaction between a non-linear chain reactive precursor and a curing agent, and having a glass transition temperature of −60° C. to 0° C.; a non-crystalline polyester resin B having a glass transition temperature of 40° C. to 70° C.; and a crystalline polyester resin C, wherein the toner has a glass transition temperature Tg1st of 20° C. to 40° C. as measured with first heating in differential scanning calorimetry (DSC). | 03-07-2013 |
20130157184 | TONER AND DEVELOPER - To provide a toner, including at least: a non-crystalline polyester resin; and a crystalline polyester resin, wherein the toner has a glass transition temperature in a first heating Tg1st and a glass transition temperature in a second heating Tg2nd, and a difference between Tg1st and Tg2nd (Tg1st−Tg2nd) is 10° C. or greater, and wherein the crystalline polyester resin is a modified crystalline polyester resin having a urethane skeleton or a urea skeleton, or both thereof. | 06-20-2013 |
20130157193 | TONER AND IMAGE FORMING METHOD - A toner containing colorant, releasing agent, and binder resin containing crystalline polyester resin, and non-crystalline polyester resin containing urethane bond, urea bond, or both, the non-crystalline polyester resin containing first and second non-crystalline polyester resins, both containing urethane bond, or urea bond, or both, wherein monomers constituting the first non-crystalline polyester resin contains isocyanate monomer for forming the urethane bond, the urea bond, or the both, in an amount of 0.5 mol % or greater to total amount of the monomers, monomers constituting the second non-crystalline polyester resin contain isocyanate monomer for forming the urethane bond, the urea bond, or the both, in an amount of 0.5 mol % or greater to total amount of the monomers, the first non-crystalline polyester resin has Tg of −60° C. or higher but lower than 10° C., and the second non-crystalline polyester resin has Tg of 30° C. or higher but lower than 70° C. | 06-20-2013 |
20130171554 | YELLOW TONER AND COLOR IMAGE FORMING METHOD - A yellow toner including: a non-crystalline resin; C.I. Pigment Yellow 185; and a releasing agent, wherein the yellow toner has a glass transition temperature of more than 18° C. but less than 40° C. | 07-04-2013 |
20130171557 | TONER FOR DEVELOPING ELECTROSTATIC IMAGES AND DEVELOPER - To provide a toner containing: a binder resin containing a non-crystalline polyester resin and a crystalline polyester resin; a colorant; and wax, wherein the toner satisfies the following formula 1, and has loss tangent of 1 or smaller at 80° C. or higher, B−A<20 Formula 1 where A represents a melting point of the crystalline polyester resin and B represents a temperature at which the toner has storage modulus G′ of 20,000 Pa. | 07-04-2013 |
20130177846 | TONER AND DEVELOPER - To provide a toner, containing: a binder resin; a colorant; a releasing agent; and a crystalline polyester resin, wherein the toner satisfies the following formulae (1) to (3): 40° C.≦X≦55° C. Formula (1) 85° C.≦Y≦92° C. Formula (2) 35° C.≦Y−X≦50° C. Formula (3) where X is an onset temperature and Y is an endset temperature of an endothermic peak on a differential scanning calorimetry (DSC) curve of the toner as measured by a differential scanning calorimeter (DSC). | 07-11-2013 |
20130196263 | ELECTROSTATIC IMAGE FORMING TONER AND DEVELOPER - An electrostatic image forming toner including: toner base particles each containing at least a colorant, a binder resin, and a releasing agent, wherein the binder resin contains a non-crystalline polyester resin A and a crystalline polyester resin B, wherein a ratio of B/(A+B)×100 is 10 or more but less than 50 where (A+B) is a total mass of the non-crystalline polyester resin A and the crystalline polyester resin B and “B” is a mass of the crystalline polyester resin B, and wherein the toner base particles have a TMA compression deformation amount (TMA %) of 10% or less which is measured at 50° C. and a relative humidity of 90%. | 08-01-2013 |
20130209931 | TONER AND METHOD FOR PRODUCING THE SAME - A toner including base particles each containing a crystalline polyester and a non-crystalline polyester, wherein the toner has a glass transition temperature of 45° C. or higher where the glass transition temperature is determined from a DSC curve of the toner obtained in the first elevation of temperature thereof, and wherein the toner has a temperature width of 8° C. or lower where the temperature width is a temperature width at ⅓ the height of an endothermic peak attributed to the crystalline polyester in the DSC curve. | 08-15-2013 |
20130337374 | TONER, DEVELOPER AND IMAGE FORMING APPARATUS - To provide a toner including a binder resin and a colorant, wherein the toner has a glass transition temperature by differential scanning calorimetry (DSC) of 20° C. or greater and less than 50° C., an endothermic peak temperature by DSC of 50° C. or greater and less than 80° C. and an amount of compressive deformation at 50° C. by a thermomechanical analysis of 5% or less. | 12-19-2013 |
20140023965 | TONER, DEVELOPMENT AGENT, AND IMAGE FORMING APPARATUS - Toner contains a binder resin and a colorant, wherein the binder resin contains a resin having a polyhydroxy carboxylic acid skeleton, wherein the toner has a half effusion temperature of from 80° C. to 120° C. as measured by a temperature rising method using a flow tester. | 01-23-2014 |
20140080046 | TONER FOR FORMING ELECTROSTATIC IMAGE, DEVELOPER, PROCESS CARTRIDGE, AND IMAGE FORMING APPARATUS - To provide a toner, which contains a colorant, a binder resin, and a releasing agent, wherein the toner satisfies the following (a) to (c); (a) the toner contains at least a polyester resin as the binder resin; (b) the toner has Tg1st of 25° C. to 50° C.; and (c) the toner has a TMA compressive deformation rate (TMA %) of 10% or lower at 50° C. under a condition having relative humidity of 70%, wherein the Tg1st is glass transition temperature of the toner for first heating, as the toner is measured by a DSC system (a differential scanning calorimeter). | 03-20-2014 |
20140080050 | TONER, DEVELOPMENT AGENT, IMAGE FORMING APPARATUS, AND IMAGE FORMING METHOD - Toner contains a binder resin, wherein the binder resin contains a block copolymer A containing a crystalline segment X and a non-crystalline segment Y, wherein the toner has a thermo-mechanical analysis (TMA) compressive deformation amount (TMA %) of 10% or less at 50° C. and a relative humidity of 90%, wherein the toner has a spin-spin relaxation time (t130) of 10 ms or greater at 130° C. as measured by pulse nuclear magnetic resonance (NMR), wherein the toner has a spin-spin relaxation time (t′70) of 1 ms or less at 70° C. as measured by pulse NMR when descending from 130° C. to 70° C. | 03-20-2014 |
20140093820 | TONER FOR DEVELOPING LATENT ELECTROSTATIC IMAGE AND METHOD FOR PRODUCING TONER FOR DEVELOPING A LATENT ELECTROSTATIC IMAGE - To provide a toner containing toner base particles, in each of which a colorant and a releasing agent are encapsulated with a binder resin, where the toner base particles are obtained by the method containing: mixing and emulsifying a mixture containing the binder resin, the colorant, the releasing agent, and an organic solvent in an aqueous medium in the presence of resin particles, wherein the aqueous medium contains a surfactant and an inorganic salt. | 04-03-2014 |
20150024312 | TONER, DEVELOPER, AND COLOR TONER SET - A toner, including: a binder resin; and a colorant, wherein the toner has a storage modulus of 1.0×10 | 01-22-2015 |
20150072287 | TONER FOR IMAGE FORMATION, AND DEVELOPER AND IMAGE FORMING APPARATUS USING THE TONER - A toner is provided. The toner includes a crosslinked polyester resin, and a block copolymer. The crosslinked polyester resin includes a diol component, which includes an aliphatic diol component having 3 to 10 carbon atoms in an amount of 50% by mole, and a crosslinked component, which is at least one of a crosslinked component of an aliphatic alcohol having three or more valences and a crosslinked component of an aliphatic acid having three or more valences, and the block copolymer includes a crystalline segment (a) and a non-crystalline segment (b). The toner has a first glass transition temperature (Tg1st) of from 20° C. to 50° C., which is determined by subjecting the toner to differential scanning calorimetry (DSC) and measuring a glass transition temperature in a first temperature rising process in the differential scanning calorimetry (DSC). | 03-12-2015 |
20150132690 | TONER, DEVELOPER AND IMAGE FORMING APPARATUS USING THE SAME - A toner includes a binder resin including a copolymer resin (A) having a structural unit derived from a crystalline polyester resin (A1) and another structural unit derived from an amorphous polyester resin (A2), and an amorphous resin (B) in an amount of from 30 to 70% by weight based on total weight of the binder resin. The binarized image of the AFM phase image of the binder resin consists of first phase-contrast images serving as large-phase-difference portions and second phase-contrast images serving as small-phase-difference portions with the first phase-contrast images dispersed in the second phase-contrast images forming a dot-like or streaky structure. The average value of dispersion diameters, corresponding to maximum Feret diameters, of the first phase-contrast images in the dot-like structure, or widths, corresponding to minimum Feret diameters, of the first phase-contrast images in the streaky structure, is less than 100 nm. | 05-14-2015 |
20150153671 | RESIN COMPOSITION FOR TONER, TONER, DEVELOPER AND IMAGE FORMING APPARATUS - A resin composition for a toner including a polyester resin and a colorant, wherein the polyester resin has A(10)-A(180) of 70 or greater, where A(10) (%) is a transmittance of light having a wavelength of 500 nm through a mixture of 20 parts by mass of the polyester resin added to 80 parts by mass of ethyl acetate and stirred at 25° C. for 10 minutes, and A(180) (%) is the transmittance after the mixture is left to stand for 3 hours. | 06-04-2015 |