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| Number | Title | Issue Date |
| 8163450 | Toner, and image forming apparatus and image forming method using the toner A toner including toner particles; and external additives including a fatty acid metal salt having an average primary particle diameter of from 0.5 to 1.5 μm; a positively chargeable particulate inorganic material; and a negatively chargeable particulate inorganic ... | 04/24/2012 |
| 8110329 | Charge controlling agent and toner A charge controlling agent is provided as a compound in which an amide group is introduced together with a sulfonic group or a derivative thereof. The charge controlling agent is characterized by including at least one compound represented by the chemical formula (2... | 02/07/2012 |
| 8097389 | Color toner for flash fusing, method for producing the same, and electrostatic image developer, process cartridge, and image forming apparatus using the same The invention provides a color toner for flash fusing containing at least: a binder resin, a colorant, a leuco dye, a developer and a decolorizer. An absorbance of the color toner after photoirradiation at a wavelength of about 900 nm is smaller than an absorbance o... | 01/17/2012 |
| 8071268 | Electrophotographic toner The present invention relates to a toner for electrophotography containing a resin binder, a colorant, and a clay-organic complex obtained by intercalating into a smectite clay a quaternary ammonium salt represented by the formula (A): [(R1) | 12/06/2011 |
| 8067140 | Toner for developing electrostatic image and method of producing the same A toner for developing electrostatic image which has a reduced residual amount of a decomposed product of a polymerization initiator remaining in the toner upon production (mainly an ether component) and an unreacted polymerizable monomer (mainly styrene), less odor... | 11/29/2011 |
| 7998647 | Electrostatic image developing toner, electrostatic image developer, image forming method, image forming apparatus and printed matter An electrostatic image developing toner comprising an amide ester represented by formula (1): wherein R1CO— and R2CO— each independently represents a saturated or unsaturated acyl group having a ca... | 08/16/2011 |
| 7955773 | Toner for developing electrostatic image, developer for developing electrostatic image, toner cartridge, process cartridge, and image forming apparatus A toner for developing an electrostatic image includes a toner particle to which particles of an external additive A having a number average particle diameter of from 7 nm to 200 nm and particles of an external additive B having a number average particle diameter of... | 06/07/2011 |
| 7943280 | Toner containing a laminar inorganic mineral in which part or all of the ions present between layers are modified by organic ions A toner containing a colorant, a binder resin and a laminar inorganic mineral in which part or all of the ions present between layers are modified by organic ions. The toner can be prepared by a method including dispersing or emulsifying a toner constituent mixture ... | 05/17/2011 |
| 7842445 | Secure imaging toner and methods of forming and using the same A toner for printing documents that are difficult to chemically or physically forge and that are readily easy to visually verify and methods of using and forming the toner are disclosed. The toner includes a colorant for printing an image on a surface of a document,... | 11/30/2010 |
| 7833684 | Toner compositions A toner having charge control agents which impart excellent triboelectric charging characteristics. ... | 11/16/2010 |
| 7704660 | Developer for electronic printing, and process for producing glass plate having electric conductor pattern To provide a process for producing a glass plate having an electric conductor pattern excellent in adhesion to the surface of the glass plate, whereby it is not required to have a screen ready for every model and adjustment to desired electric heating performance an... | 04/27/2010 |
| 7695880 | Toner, electrophotographic apparatus and process cartridge A toner, and an electrophotographic apparatus and an electrophotographic process cartridge using the toner are provided having excellent charge stability without adversely affecting electric properties of the toner even when used for a long period of time and having... | 04/13/2010 |
| 7678521 | Electrophotographic toner and image forming apparatus There are disclosed an electrophotographic toner including a compound represented by formula (1) and a compound represented by formula (2). In Formula (1), R1, R2, R3, and R4 each i... | 03/16/2010 |
| 7611812 | Use of salts of layered double hydroxides as charge control agents Layered double hydroxide salts as charge control agents in electrophotographic toners and developers, in powder coating materials, electret materials and in electrostatic separation processes of chargeable materials, such as polymers, wherein the double hydroxide sa... | 11/03/2009 |
| 7572563 | Toner for electrostatic image development A toner for electrostatic image development containing a resin binder, a charge control agent, and a colorant, and wherein the charge control agent contains a metal complex of a salicylic acid compound and a quaternary ammonium salt of a carboxylic acid. The toner f... | 08/11/2009 |
| 7547497 | Toner, and developer, image developer and image forming apparatus using the toner 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. ... | 06/16/2009 |
| 7498112 | Emulsion/aggregation toners having novel dye complexes Disclosed is a toner particle having at least binder and colorant. The colorant is a dye complex comprising a dye, a nonionic surfactant and a complexing agent. The toner having this colorant exhibits improved color gamut. ... | 03/03/2009 |
| 7442480 | Positively chargeable toner A positively chargeable toner comprising a resin binder, a specified compound represented by the formula (I), and a higher fatty acid with a long-chain alkyl group having 8 to 22 carbon atoms and/or a metal salt thereof. The positively chargeable toner is a positive... | 10/28/2008 |
| 7416601 | Black perylene pigments Black perylene pigments which comprise one of the isomers of the formula Ia or Ib in which R1, R2 are each independently phenylene, naphthylene or pyridylene, each of which may be mono- or... | 08/26/2008 |
| 7387670 | Pigment preparations based on phthalocyanine pigments A pigment preparation comprising at least one copper phthalocyanine pigment from the group of C.I. Pigment Blue 15, 15:0, 15:1,15:2, 15:3, 15:4, and 15:6, and at least one pigment dispersant of the formula (I), in which n i... | 06/17/2008 |
| 7384472 | Pigment preparations based on PY 155 The invention concerns a pigment preparation based on C.I. Pigment Yellow 155, containing 0.1% to 50% by weight, based on the weight of C.I. Pigment Yellow 155, of at least one pigment dispersant from the group of monoazo or disazo pigments substituted with at least... | 06/10/2008 |
| 7351359 | Method for producing conductive polyaniline and organic polymer composition A method for producing a conductive polyaniline comprising oxidative polymerizing aniline or its derivative in the presence of at least one member of a sulfonic acid compound and a water-insoluble organic polymer compound having protonic acid group in a mixed layer ... | 04/01/2008 |
| 7344813 | Emulsion aggregation toner having gloss enhancement and toner release A toner includes particles of a resin, an optional colorant, a first wax and a second wax, where the toner particles are prepared by an emulsion aggregation process. Additional waxes can also be added for different properties. ... | 03/18/2008 |
| 7326507 | Preparation of a toner for reproducing a metallic hue and the toner The present invention relates to a toner and process for preparing a toner for reproduction of a metallic, preferably golden or silvery, hue by a printing process, especially for electrophotography. A congeneric process and/or a congeneric toner is preserved with re... | 02/05/2008 |
| 7316879 | Imaging color toner, color image forming method and color image forming apparatus In an imaging color toner employing a photofixing system, a binder resin, which contains, as a principal component, a polyester resin obtained by mixing a first polyester resin having a softening point Tsp of not lower than 120° C. and lower than 170° C. with a se... | 01/08/2008 |
| 7314696 | Electrophotographic toner and development process with improved charge to mass stability Toners and developers are disclosed. The toner of the present invention contains at least one toner resin, at least one charge control agent, at least one surface treatment agent, and optionally at least one release agent and/or colorant. The toners of the present i... | 01/01/2008 |
| 7309735 | Method of making a thermoplastic composition containing an antistatic agent A method for preparing a thermoplastic composition containing an antistatic agent is described. The antistatic agent is a phosphonium sulfonate salt of generic formula (1) wherein each X is independently a haloge... | 12/18/2007 |
| 7309553 | Oilless toner An oilless toner including at least (A) a cyclic olefin resin; (B) a resin having one or more carbon-carbon double bonds therein; and (C) a wax. ... | 12/18/2007 |
| 7310490 | Developing unit for an image forming apparatus A developing unit for an image forming apparatus using a two-property developer that induces a magnetic attraction force based on the slope of a curved line representing the magnetism of each magnetic pole of a magnetic field generating part of a developing roller a... | 12/18/2007 |
| 7303846 | Electrophotographic toner, process for producing the same, and process for forming image An electrophotographic toner contains at least a binder resin and a colorant, and log10{[Cu]/[C]} satisfies the following equation (1): −5.0≦log10{[Cu]/[C]}≦−3.5 (1) in which, [C] represents a carbon content (%... | 12/04/2007 |
| 7300734 | Toner compositions A toner composition comprising a binder, colorant, and a charge control surface additive mixture comprising a mixture of a first titanium dioxide possessing a first conductivity and a second titanium dioxide possessing a second conductivity and which second conducti... | 11/27/2007 |
| 7300506 | Ink formulations, print systems, and methods thereof Ink formulations, ink jet sets, methods of stabilizing an ink formulation, printer systems, and methods thereof, are disclosed. One exemplary ink formulation, among others, includes a pigment and a borate buffer. The ink formulation has an ink stability characterist... | 11/27/2007 |
| 7289751 | High resolution image forming apparatus An image forming apparatus includes a photosensitive body (11) having a charge transport layer (11d) as a surface layer. The charge transport layer (11d) as the surface layer is charged and exposed so that a latent image is formed ... | 10/30/2007 |
| 7286781 | Developer, image forming method and image forming apparatus A toner for developing a latent image includes, at least, a binder resin, a releasing agent, a coloring agent and a fluidizing agent. A melting point Tw of the releasing agent is higher than or equals to a softening temperature Ts of the developer measured by a capi... | 10/23/2007 |
| 7282595 | Antitumor benzoylsulfonamides The present invention provides antitumor compounds of the formula (I); and antitumor methods. ... | 10/16/2007 |
| 7276319 | Toner for electrostatic latent image development and image forming method A toner for electrostatic latent image development includes a coloring agent and a resin wherein the toner is formed by a polymerization method and a content of aromatic amine contained in the toner is 50 ppm or less, and a volume average particle size of the toner ... | 10/02/2007 |
| 7271290 | Monoformylated arylamine processes and compounds A process comprising for example reacting a substituted or unsubstituted arylamine or a mixture thereof with a Vilsmeier reagent in a solvent system comprising acetonitrile as a sole solvent or a solvent system comprising acetonitrile and one or more solvents select... | 09/18/2007 |
| 7244536 | Toner A toner comprising a resin binder, a black colorant comprising a composite oxide of two or more metals, and a charge control agent comprising a quaternary ammonium salt. The toner is suitably used for the development of a latent image formed in electrophotography, e... | 07/17/2007 |
| 7235587 | Diesters containing two crylene or fluorene moieties, sunscreen compositions containing the same, and methods of photostabilizing a sunscreen compositions containing the same Diesters that include one or more of a crylene and/or a fluorene moiety, and sunscreen compositions including a mixture of a photoactive compound and one or more of a diester that includes one or more of a crylene and/or a fluorene moiety are described herein. Also ... | 06/26/2007 |
| 7223519 | Imaging compositions and methods Imaging compositions and methods of using the compositions are disclosed. The imaging compositions are sensitive to low levels of energy such that upon application of the low levels of energy the compositions change color or shade. The compositions may be applied to... | 05/29/2007 |
