Patent application number | Description | Published |
20080286675 | METHOD OF PRODUCING POLYMERIZED TONER, METHOD OF PRODUCING BINDER RESIN FOR TONER, AND TONER - The method of producing polymerized toner, the method including: dispersing a polymerizable monomer composition containing at least a polymerizable monomer and a colorant in an aqueous medium; and polymerizing the polymerizable monomer in the aqueous medium with a polymerization initiator to produce toner particles, and is characterized in that a polymerization initiator which has a specific structure and the hydrogen bond dissociation energies of which satisfy specific relationships is used as the polymerization initiator. | 11-20-2008 |
20090035688 | TONER, AND TONER PRODUCTION PROCESS - In a chart of molecular weight distribution measured of a toner, i) the toner has a main peak in the region of molecular weight of 16,000 to 60,000, and ii) where the molecular weight at the main peak is represented by M1, and where the height at the molecular weight M1 is represented by H(M1), the height at a molecular weight of 4,000 by H(4000) and the height at a molecular weight of 15,000 by H(15000), the H(4000), the H(15000) and the H(M1) satisfy a specific proportion. The toner has a weight-average molecular weight (Mw) of 15,000 to 80,000, and, in an endothermic chart, i) the toner has an endothermic main peak in the range of 40 to 1300C, and ii) the calorimetric integral value represented by the peak area of the endothermic main peak is 10 to 35 J per 1 g of the toner. | 02-05-2009 |
20100119965 | METHOD FOR PRODUCING POLYMERIZED TONER, POLYMERIZED TONER, METHOD FOR PRODUCING BINDER RESIN FOR TONER AND BINDER RESIN FOR TONER - The present invention provides a method for producing a toner that can suppress the production of the decomposition products derived from a polymerization initiator, and can suppress the remaining presence, in the toner particles, of the unreacted polymerizable monomer and decomposition product residues. On the basis of this method, the present invention provides a toner that is excellent in triboelectric charging stability and can yield stable images over a long term. The present invention provides a method for producing a polymerized toner including a step of producing a polymerized toner particle by dispersing in an aqueous medium a polymerizable monomer composition including at least a polymerizable monomer and a colorant and by polymerizing the polymerizable monomer by using a polymerization initiator in the aqueous medium, the method being characterized in that the polymerization initiator has a structure represented by the following General Formula: | 05-13-2010 |
20110159425 | TONER - To obtain a toner which has excellent charge rise and stability, tends to have a sharp charge distribution, has excellent pigment dispersion properties, exhibits no disarray in an image even during a high-speed copying operation, and can stably output high-resolution images. A toner comprising toner particle containing a binder resin, a colorant, resin PA, and resin PB, wherein the resin PA has unit A represented by Formula (1), the resin PB has unit B represented by Formula (2), a content “a” of the unit A in the toner particle is 2.00 μmol/g or more, and a molar ratio b/a of the content “a” and a content “b” of the unit B in the toner particle is 0.10 or more and 10.00 or less. | 06-30-2011 |
20120164569 | RESIN FOR TONER AND TONER - A resin for toner containing a resin component having both a polyester unit produced by polycondensation of a polyhydric alcohol component and a polycarboxylic acid component, and an aryl group having a sulfonic ester group as a substituent; and a toner that contains the resin for toner. | 06-28-2012 |
20120172562 | RESIN FOR TONERS, AND TONER - To obtain a resin for toners, or a toner, which is superior in the quickness in its rise of charging to a sufficient charge quantity in a short time, in the stability of charging that extends from the initial stage up to the printing on a large number of sheets, and in the stability of charging that comes in a high-temperature and high-humidity environment. As a charge control resin, it is characterized by containing a specific unit having sulfonic acid or a sulfonate as a substituent and a specific unit having a salicylic acid derivative. | 07-05-2012 |
20120295190 | TONER - A toner is provided which has toner particles containing an aromatic compound represented by the following formula (1), and a colorant: | 11-22-2012 |
20120295191 | TONER - A toner is provided which has toner particles containing a charging component and containing an aromatic compound represented by the following formula (1): | 11-22-2012 |
20130065174 | TONER - An object of the present invention is to provide a toner in which a charging amount and rise of the charging amount are hardly influenced by change in a temperature and humidity environment, and pigment dispersibility is high in order to provide an image output having high transparency, color mixing properties, and color nuance stability. The present invention is a toner comprising toner particles each comprising a metallic compound and a colorant, wherein the metallic compound is a compound having a structure bonded to a metal in a site derived from —COOM | 03-14-2013 |
20140072908 | TONER - A toner including toner particles containing a binder resin, a colorant and a charge controlling agent, wherein the charge controlling agent is a polymer A having a structure “a” represented by formula (1), and the polymer A has a weight average molecular weight (Mw) of 1,000 to 100,000: | 03-13-2014 |
20140087299 | TONER - A toner including toner particles, each of which comprising a charging component, a polymer having a partial structure represented by the following formula (1) as the side chain, and a colorant: | 03-27-2014 |
20140106272 | TONER - Provided is a toner having high charging rapidity to reach a sufficient charging amount in a short time, high stability of charging from the initial stage to a time when a large amount of sheets is printed out, and high stability of charging under a high temperature and high humidity. In a toner including toner particles, each of which contains at least a binder resin, a colorant, and a charge controlling resin, the charge controlling resin is a copolymer of a structure A having at least a specific salicylic acid derivative structure and a structure B having sulfonic acid or sulfonic acid ester as a substituent. | 04-17-2014 |
20140205943 | TONER - Since a charge amount of a toner and a charge rise characteristic thereof are liable to be influenced by the change in temperature and humidity condition, the change in image density occurs in printing, and in particular, in high temperature and high humidity environment, inconveniences, such as image fogging, occur due to non-uniformity of the charge amount distribution. In a toner including toner particles obtained by dispersing a monomer composition containing a polymerizable monomer and a colorant in an aqueous medium to form droplets and polymerizing the polymerizable monomer in the droplets, the toner particles contain a polymer formed by a polymerization reaction of the polymerizable monomer and a metal compound having a vinyl group. | 07-24-2014 |
20140308611 | TONER - It is an object of the present invention to provide a toner capable of being fixed at low energy and forming an image with high resistance to external forces, such as rubbing and scratching. | 10-16-2014 |