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| Number | Title | Issue Date |
| 7901858 | Mixed cyclic phenol sulfides, and charge control agents and toners using the same The present invention discloses a mixed cyclic phenol sulfide which is a mixture of the cyclic phenol sulfide wherein m is 8 and the cyclic phenol sulfide wherein m is an integer other than 8, the cyclic phenol sulfide being represented by the following formula (1):... | 03/08/2011 |
| 7740999 | Toner To achieve improvements in developing performance, transferring performance, and fixing performance, a toner has a glass transition temperature (TgA) of 40 to 60° C. and a temperature (P1) of the highest peak of 70 to 120° C.; cyclohexane (CHX) insoluble matter in... | 06/22/2010 |
| 7732116 | Photoconductors containing N-arylphthalimides The present invention is an electrophotographic photoconductor having a photosensitive layer on a conductive substrate. The photosensitive layer contains N-arylphthalimides additives. ... | 06/08/2010 |
| 7709172 | Oxidized mixed cyclic phenol sulfides, and charge control agents and toners using the same The present invention discloses an oxidized mixed cyclic phenol sulfide which is a mixture of the oxidized cyclic phenol sulfide wherein m is 8 and the oxidized cyclic phenol sulfide wherein m is an integer other than 8, the oxidized cyclic phenol sulfide being repr... | 05/04/2010 |
| 7541130 | Sulfone charge control agents for electrostatographic toners The present invention is directed to an electrostatographic toner having a sulfone charge control agent having the structure X—SO2—Y wherein X is an alkyl or aromatic group and Y is an alkyl or aromatic group. The present invention is also directed to... | 06/02/2009 |
| 7422833 | Toner, production process thereof, and process for forming image A charge control resin composition for positive or negative charge, which is prepared either by mixing and kneading a charge control resin for positive or negative charge with a colorant, or by mixing and kneading the above combination further with a charge control ... | 09/09/2008 |
| 7318989 | Toner, developer, toner container, process cartridge, image forming apparatus, and image forming method To provide a toner that can provide long-term removability and high-definition images with reduced image layer thickness and densely-packed toner particles, a developer capable of forming high-quality images using the toner, a toner container for containing the tone... | 01/15/2008 |
| 7314695 | Toner for developing electrostatic charge image A toner for developing electrostatic charge images that exhibits superior fixability at low temperature so as to realize satisfactory fixing performance even with less energy, that exhibits high stress resistance so as to be free from blade contamination by molten t... | 01/01/2008 |
| 7217486 | Toner and image-forming apparatus using the toner The present invention provides a toner containing toner mother particles containing a binder resin and a colorant having added thereinto external additives, e.g., positively electrifiable silica fine particles, negatively electrifiable silica fine particles, titaniu... | 05/15/2007 |
| 7205082 | Electrostatic charge image developing toner An electrostatic charge image developing toner having: a toner particle having a colorant and a resin; and a surfactant having two or more anionic groups within one molecule in an amount of 10 ppm to 10,000 ppm. ... | 04/17/2007 |
| 7162187 | Image forming apparatus and image forming method In an image forming apparatus, a toner image is formed on a photosensitive element and a transfer roller, which carries a transfer medium, is pressed against a photosensitive element at a pressure of from 20.4 N/cm2 to 200 N/cm2. ... | 01/09/2007 |
| 7153622 | Electrostatic charge image developing toner, producing method therefor, image forming method and image forming apparatus utilizing the toner, construct and method for making the construct A construct that comprises a base material and a polyhydroxyalkanoate, wherein at least a part of the base material is coated with the polyhydroxyalkanoate, and the polyhydroxyalkanoate comprises a 3-hydroxyalkanoic acid unit other than 3-hydroxypropionic acid unit,... | 12/26/2006 |
| 7135540 | Polyhydroxyalkanoate copolymer including unit having bromo group in side chain and method for producing the same The invention provides a polyhydroxyalkanoate having a bromo group in a unit and being thermally stable and capable of arbitrarily controlling physical properties, and a producing method thereof. According to the invention, there are provided a polyhydroxyalkanoate ... | 11/14/2006 |
| 7122285 | Toner for developing static latent image, method for producing toner for developing static latent image A toner for developing a static latent image is disclosed. The colored resin particle contains a resin and a colorant, and the colored resin particle contains at least two kinds of compound each represented by the following Formula, and total amount is from 1 to 1,0... | 10/17/2006 |
| 7112393 | Non-magnetic toner In a non-magnetic toner having non-magnetic toner particles containing at least a binder resin and a colorant, and an inorganic fine powder, the non-magnetic toner particles contain at least one ether compound having a specific structure, and the ether compound is i... | 09/26/2006 |
| 7070896 | Toner and process for producing toner A toner containing a binder resin, a colorant, a charge control agent, and a thiazolyl disulfide compound or a thiuram disulfide compound. A process for producing a toner comprising polymerization of a polymerizable monomer composition that contains a polymerizable ... | 07/04/2006 |
| 7056708 | Method of producing polyhydroxyalkanoate from alkane having residue containing aromatic ring in its molecule The present invention provides a method of effectively producing polyhydroxyalkanoate having an aromatic substituted residue in its monomer unit. In the method of producing polyhydroxyalkanoate by using microorganisms, microorganisms capable of producing polyhydroxy... | 06/06/2006 |
| 7049039 | Coloring agent for toner, and toner A coloring agent for use in toners which comprises coloring particles modified with a surface modifier having in one molecule a hydrophilic moiety, a hydrophobic moiety, and a reactive moiety between the hydrophilic moiety and the hydrophobic moiety. Also disclosed ... | 05/23/2006 |
| 7045321 | POLYHYDROXYALKANOATE CONTAINING UNIT WITH PHENYLSULFANYL STRUCTURE IN THE SIDE CHAIN, PROCESS FOR ITS PRODUCTION, CHARGE CONTROL AGENT, TONER BINDER AND TONER WHICH CONTAIN NOVEL POLYHYDROXYALKANOATE, AND IMAGE-FORMING METHOD AND IMAGE-FORMING APPARATUS WHICH MAKE USE OF THE TONER A polyhydroxyalkanoate characterized by having in the molecule a unit represented by Chemical Formula (1): wherein n may assume any one integral value within the range of from 1 to 8. Also disclosed are a process for p... | 05/16/2006 |
| 6994942 | Non-magnetic single-component toner, method of preparing the same, and image forming apparatus using the same A non-magnetic single-component toner 8 of the present invention has toner mother particles 8a, and external additives 12 comprising: two hydrophobic silicas 13, 14 of which particle diameters are different from each other, i.e. a ... | 02/07/2006 |
| 6991884 | Chemically prepared toner and process therefor A chemically prepared toner for electrophotographic printers and method therefor using a unique polymeric dispersant. The chemically prepared toner includes agglomerated polymeric dispersant stabilized pigment particles, a fuser release agent, a charge control agent... | 01/31/2006 |
| 6977129 | Charge control agent, toner using same developer containing the toner and developing device containing the developer A charge control agent containing a calcium salt of a sulfoisophthalic acid compound. A toner for developing an electrostatic latent image including the above charge control agent, a binder resin and a colorant. ... | 12/20/2005 |
| 6965746 | Hybrid electrophotographic development with toner induction charged via AC induced conductivity A method is provided for developing a latent electrostatic image with marking particles through the process steps of: moving the surface of an image receiving member at a predetermined process speed; storing a supply of developer material comprising toner and carrie... | 11/15/2005 |
| 6953646 | Toner particles including a sulfur-containing resin A toner comprises toner particles comprising at least a binder resin, a colorant, and a sulfur-containing resin, in which the toner particles comprise the sulfur-containing resin so as to satisfy a relation of; 0.50≦IS/TS≦0.95 where TS... | 10/11/2005 |
| 6911521 | Polyhydroxyalkanoate that comprises unit having substituted or unsubstituted (phenylmethyl) sulfanyl structure in side chain thereof and process for producing the same A polyhydroxyalkanoate that comprises a unit represented by the following chemical formula (1): wherein R1 is a substituent of an aromatic ring selected from the group consisting of H, CH3, C2H | 06/28/2005 |
| 6908721 | POLYHYDROXYALKANOATE HAVING AMIDE GROUP AND SULFONIC GROUP, METHOD OF PRODUCING THE SAME, CHARGE CONTROLLING AGENT CONTAINING NOVEL POLYHYDROXYALAKNAOTE, TONER BINDER, TONER, AND IMAGE FORMING APPARATUS USING THE TONER A polyhydroxyalkanoate comprises a unit of formula (1): —(O—CH((CH2)mSASO2R)CH2C(═O))— wherein R is selected from the group consisting of OH, a halogen atom, ONa, OK, OCH3 and OC2H5... | 06/21/2005 |
| 6855472 | POLYHYDROXYALKANOATE, PRODUCING METHOD THEREFOR, CHARGE CONTROL AGENT CONTAINING SUCH POLYHYDROXYALKANOATE, TONER CONTAINING SUCH CONTROL AGENT AND IMAGE FORMING METHOD AND IMAGE FORMING APPARATUS UTILIZING SUCH TONER The invention is to provide polyhydroxyalkanoate of a novel structure enabling application to wider fields, and a producing method therefor. The invention also provides a biodegradable charge control agent having excellent charging characteristics, excellent dispers... | 02/15/2005 |
| 6830859 | Charge control agent and toner using same A charge control agent containing a barium salt of a sulfoisophthalic acid compound and optionally a metal salt of a salicylic acid compound. A toner for developing an electrostatic latent image comprising such a charge control agent, a binder resin and a colorant. | 12/14/2004 |
| 6733939 | Toner, developer and container for the developer, and method of and apparatus for forming an image The electrophotographic toner according to the present invention comprises a binder resin, a colorant, and a negative charge control agent. The binder resin is polyester and/or polyol. The negative charge control agent comprises components which are (1) sulfonic-aci... | 05/11/2004 |
| 6730450 | Toner compositions comprising polyester resin and poly (3,4-ethylenedioxythiophene) Disclosed is a toner comprising particles of a polyester resin, an optional colorant, and poly(3,4-ethylenedioxythiophene), wherein said toner particles are prepared by an emulsion aggregation process. Another embodiment of the present invention is directed to a pro... | 05/04/2004 |
| 6699633 | Toner compositions comprising polyester resin and poly(3,4-ethylenedioxythiophene) Disclosed is a toner comprising particles of a polyester resin, an optional colorant, and poly(3,4-ethylenedioxythiophene), wherein said toner particles are prepared by an emulsion aggregation process. Another embodiment of the present invention is direct... | 03/02/2004 |
| 6692880 | Electrophotographic toner with stable triboelectric properties Toner formulations and developers containing the toner formulations are described. The toner contains at least one toner resin, at least one first charge control agent capable of providing a consistent level of charge, at least one second charge control a... | 02/17/2004 |
| 6689527 | Toner compositions comprising vinyl resin and poly (3,4-ethylenedioxythiophene) Disclosed is a toner comprising particles of a vinyl resin, an optional colorant, and poly(3,4-ethylenedioxythiophene), wherein said toner particles are prepared by an emulsion aggregation process. Another embodiment of the present invention is directed t... | 02/10/2004 |
| 6686111 | Toner compositions comprising vinyl resin and poly (3,4-ethylenedioxythiophene) Disclosed is a toner comprising particles of a vinyl resin, an optional colorant, and poly(3,4-ethylenedioxythiophene), wherein said toner particles are prepared by an emulsion aggregation process. Another embodiment of the present invention is directed t... | 02/03/2004 |
| 6653035 | Magnetic toner A magnetic toner exhibiting stable performances under various environmental conditions is formed of toner particles each comprising at least a binder resin and iron oxide dispersed therein. Relative to the dry specific gravity (A) of the magnetic toner, t... | 11/25/2003 |
| 6653038 | Toner, image forming method and process cartridge A toner is formed of toner particles each comprising at least a binder resin, a colorant and a wax, and inorganic fine powder. The toner is characterized by (a) containing a sulfur-containing polymer, and (b) showing dielectric loss tangent (tanδ) values... | 11/25/2003 |
| 6638674 | Magnetic toner A magnetic toner is formed of magnetic toner particles each comprising a binder resin, an iron oxide, a sulfur-containing polymer, and inorganic fine powder blended with the magnetic toner particles, the toner having a weight-average particle size (D4) of... | 10/28/2003 |
| 6620568 | Flash fixing color toner and image forming process using the same The present invention discloses a flash fixing color toner for use in an image forming process, which comprises a binder resin, a coloring agent, and an infrared absorbent, wherein negative ions form part of the infrared absorbent, and the negative ions i... | 09/16/2003 |
| 6593052 | Toner, image forming method and process cartridge A toner containing toner particles and an inorganic fine powder; the toner particles containing at least a binder resin, a colorant, a sulfur-containing resin, and a wax; the binder resin containing a hybrid resin component containing a vinyl type polymer... | 07/15/2003 |
| 6569591 | Toner compositions comprising polythiophenes Disclosed is a toner comprising particles of a resin and an optional colorant, said toner particles having coated thereon a polythiophene. Another embodiment of the present invention is directed to a process which comprises (a) generating an electrostatic... | 05/27/2003 |
