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| Number | Title | Issue Date |
| 6562538 | Full color image forming method, and toner and intermediate transfer material for the method A full color image forming method including the steps of developing an electrostatic latent image formed on an image bearing member with a color toner to form a color toner image thereon; first transferring the color developer including a color toner imag... | 05/13/2003 |
| 6537715 | Toner, image-forming method and process cartridge A toner has toner particles containing at least a binder resin, a colorant and a sulfur-containing compound selected from the group consisting of a sulfur-containing polymer and a sulfur-containing copolymer. The toner has a weight-average particle diamet... | 03/25/2003 |
| 6503681 | Process for the production of toner for developing electrostatic image A two-step process for the production of a toner for developing electrostatic images, including a first pulverizing step wherein a toner composition containing a binder and a coloring agent is pulverized to obtain preliminarily pulverized particles having... | 01/07/2003 |
| 6451494 | Developing agent and method for manufacturing the same Disclosed is a developing agent comprising toner particles including a binder resin mainly containing an ethylene-norbornene copolymer and a coloring agent mainly containing a cyanine dye and an organic boron ammonium salt. The developing agent can be dec... | 09/17/2002 |
| 6432590 | Electrophotographic toner and image forming method using the toner A toner including toner particles including at least a binder resin having a first melting point and a first solubility parameter, a colorant and a particulate release agent having a second melting point lower than the first melting point and a second sol... | 08/13/2002 |
| 6406822 | Color-blind melt flow index properties for toners At least three differently colored toners, designed for use together in forming a color image in an image developing device, have substantially the same melt flow index value. By substantially matching the melt flow index values of at least three toners o... | 06/18/2002 |
| 6399266 | Developing agent and method for manufacturing the same Colorless toner particles containing a binder resin and a pigment wetted in advance are wet-mixed so as to obtain wetted toner particles, and thus obtained wetted toner particles are dried, thus obtaining toner particles.... | 06/04/2002 |
| 6383706 | Particulate smoothing process An apparatus including: a grinder adapted to grind toner particles; a classifier in communication with the grinder adapted to separate sized toner particles from unsized toner particles; a conduit in communication with the classifier which conduit is adap... | 05/07/2002 |
| 6383701 | Developing agent, method for manufacturing the same, and image forming apparatus 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 μm and a magnetic powder having an apparent bulk density of 0.3 g/c... | 05/07/2002 |
| 6368765 | Method of producing toner for developing latent electrostatic images A method of producing a toner for developing latent electrostatic images includes the steps of preliminarily grinding a toner composition having at least a binder resin and a coloring agent to prepare a preliminarily ground product, and finely pulverizing... | 04/09/2002 |
| 6326113 | Charge control agent manufacturing process thereof and toner for developing electrostatic images Charge control agent comprising a base particle containing at least a charge control substance, and a granulating agent, said base particle being granulated using said granulating agent, and said granulating agent being at least one selected from the grou... | 12/04/2001 |
| 6326119 | Toner and developer providing offset lithography print quality A method of forming a toner having controlled properties for use in a developer composition finding particular use in a hybrid scavengeless development scheme includes feeding at least one binder and at least one colorant into a mixing device at a feed ra... | 12/04/2001 |
| 6326114 | Toner, and process for producing a toner A toner includes at least a polyester resin having a carboxyl group, a coloring agent, 0.1-10 mass % of a metal salicylate compound with respect to a mass of the toner and 20-400 ppm of a hindered phenol with respect to the mass of the toner.... | 12/04/2001 |
| 6306552 | Carrier having specified bet specific surface area and dynamic current value and two-component developer thereof A carrier having a BET specific surface area of 0.50 to 2.00 m2 and a dynamic current value of 15 to 170 nA and a two-component developer comprising such a carrier and toner.... | 10/23/2001 |
| 6300031 | Method for manufacturing an electrophotographic toner A method for manufacturing an electrophotographic toner having a mean particle diameter of more than 5 μm and less than 10 μm. For manufacturing the above size of toner, coarsely pulverized particles are pulverized to medium pulverized particles having ... | 10/09/2001 |
| 6232030 | Toner manufacturing method The present invention relates to a process for manufacturing a toner comprising the step of melt-kneading a composition comprising a resin binder and a colorant using an open roller-type continuous kneader having heating and cooling functions. According t... | 05/15/2001 |
| 6171744 | Toner for electrophotography, method for producing it, and method of image formation Provided are a toner for electrophotography, a method for producing it, and a method of image formation with it. The toner fuses little in the apparatus where it is produced, and its productivity is high. The toner has good characteristics including charg... | 01/09/2001 |
| 5863692 | Toner for elastrostatic latent image developing and method of manufacturing same The present invention relates to a toner comprising toner particles which include at least a colorant, a binder resin, particles of metal oxide having a BET specific surface area of 80~300 m2 /g, and an organic boron compound represented by the... | 01/26/1999 |
| 5863694 | Toner for developing electrostatic latent image with specific particle-size distribution The present invention relates to a toner for developing a digital-image, comprising particles having rounded surfaces and having the following size distribution: log Y!=-0.16 X+k (2.4ࣘkࣘ2.7) 5.0ࣘXࣘ11.7 μm! wherein X! represents an average partic... | 01/26/1999 |
| 5663028 | Electrostatic toners containing aminodiacetic acid derivatives Electrostatic toners contain a polymeric binder and, as a charge stabilizer, a compound of the formula ##STR1## where M.sym. is one equivalent of a cation and R is unsubstituted or substituted C1 -C18 -alkyl or unsubstitu... | 09/02/1997 |
| 5604071 | Toner for developing electrostatic image The toner for developing an electrostatic image, excellent in any environmental conditions, comprises the colorant-containing resin particles and at least one kind of fine titanium oxide powder which has been made hydrophobic by treating in an aqueous med... | 02/18/1997 |
| 5527558 | Method for preparation of a carrier for developing an electrostatic charge image A method for preparing a carrier for developing an electrostatic charge image, wherein the carrier comprises core particles each having thereon a resin coated layer, and a volume base average particle diameter D50 of the core particles is within the range... | 06/18/1996 |
| 5496676 | Toner aggregation processes A process comprising: (i) preparing a pigment dispersion comprised of pigment, ionic surfactant, and optional charge control agent; (ii) mixing at least two resins in the form of latexes, each latex comprising a resin, ionic and nonionic surfactants and option... | 03/05/1996 |
| 5439772 | Magnetic toner and process for producing the same A magnetic toner comprising a binder resin, a magnetic substance, and polyolefin fine particles, wherein the content of the magnetic substance is from 20 to 80% by weight, the polyolefin fine particles have a mean dispersed particle diameter of from 0.01 ... | 08/08/1995 |
| 5318871 | Toner for electrophotography and method for producing the same A toner for electrophotography obtained by melting and kneading a kneaded material prepared by melting and kneading a domain resin and a coloring agent, a matrix resin having a low compatibility with the domain resin, and a dispersion assistant having a c... | 06/07/1994 |
| 5229243 | Capsulated toner for heat pressure fixation A capsulated toner for heat pressure fixation comprising a heat-meltable core material and an outer shell, said core material containing a colorant and a thermoplastic resin as a major constituent, produced by copolymerizing (A) an ,ଲ-ethylen... | 07/20/1993 |
| 5061586 | Glass composite magnetic carrier particles Disclosed are two-phase glass composite carrier particles which comprise a composite of a magnetically hard ferrite material having a single phase hexagonal crystalline structure of the formula MO.6Fe2 O3 where M is barium, strontium... | 10/29/1991 |
| 4518674 | Developing material for electrophotography, process for preparation An iron powder developer carrier for electrophotography having at least the outer surface thereof coated with iron oxide. The iron oxide has a particle size of 50 to 200μ, an apparent density of 1.5 to 2.5 g/cm3 and a specific surface area of ... | 05/21/1985 |
| 4287283 | Iron powder developing carrier and the manufacturing method of the same, developer containing said carrier and method of forming visible image by using said developer An iron powder developing carrier for developing an electrostatic latent image, a manufacturing method thereof, a developer containing said developing carrier and a method of forming a visible image by using said developer. Said iron powder developing car... | 09/01/1981 |
