| Class / Patent application number | Description | Number of patent applications / Date published |
|---|
| 430110300 | Identified toner shape (e.g., recited shape parameter, etc.) | 30 |
| 20080227017 | NON-SPHERICAL RESIN PARTICLE AND PRODUCTION METHOD THEREOF - A non-spherical resin particle giving a projection image viewing from at least one direction of approximately regular hexagonal shape in which each of the sides is convex to out side, wherein the particle satisfy the following formula when circumference length and the major diameter of the projection image of the non-spherical particle are each a and b, respectively, | 09-18-2008 |
| 20080233508 | PROCESS FOR PRODUCING TONER FOR ELECTROPHOTOGRAPHY - The present invention relates to a process for producing a toner for electrophotography, including:
| 09-25-2008 |
| 20080268366 | TONER, AND, DEVELOPER, TONER CONTAINER, PROCESS CARTRIDGE, IMAGE FORMING APPARATUS AND IMAGE FORMING METHOD - A toner which includes a toner material, wherein the toner satisfies the following formula: | 10-30-2008 |
| 20090004590 | TONER AND METHOD OF MANUFACTURING THE SAME, TWO-COMPONENT DEVELOPER, DEVELOPING DEVICE, AND IMAGE FORMING APPARATUS - in a toner at least containing a binder resin and a colorant, a value obtained by dividing a particle size D | 01-01-2009 |
| 20090029280 | TONER, METHOD OF MANUFACTURING THE SAME, TWO-COMPONENT DEVELOPER, DEVELOPING DEVICE, AND IMAGE FORMING APPARATUS - A toner includes toner particles containing at least binder resin and colorant. The toner particles contain a large-sized toner particle group of particles and a small-sized toner particle group of particles having a volume average particle size smaller than that of the large-sized toner particle group. In the toner, a volume average particle size D | 01-29-2009 |
| 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 |
| 20090061344 | DUAL COMPONENT DUAL ROLL TONER - A toner comprising toner particles having at least one type of surface additive, the toner particles having an FPIA average circularity of at least 0.95, whereby at least 80 % wt of the total amount of surface additives stays onto the surface of the toner particles when an ultrasonic treatment of 4500 to 4700 J/gram of toner is applied; a substrate printed or marked with the above-described toner; and a method for manufacturing a toner, said method including the steps of: mixing a binder resin, a colorant and optionally other additives, thereby forming a mixture, melting, kneading and milling said mixture, thereby obtaining a melted kneaded product, pulverizing said melted kneaded product, adding at least one surface additive before or while bringing the FPIA average circularity of said toner particles to 0.95 by modifying the shape or surface of said particles, wherein the total amount of surface additive does not exceed 2% wt of toner particles, whereby at least 80% wt of the total amount of surface additive stays on the surface of the toner particles when an ultrasonic treatment of 4500 to 4700 J/gram of toner is applied. | 03-05-2009 |
| 20090155709 | TONER, VESSEL WITH THE TONER, DEVELOPER, IMAGE FORMING APPARATUS AND PROCESS CARTRIDGE AND IMAGE FORMING METHOD - Toner and a developer which are excellent in cleaning property and fixing property at low temperature, and capable of forming images with high quality are provided. A toner prepared by dispersing and/or emulsifying an oil phase or a monomer phase comprising a toner composition and/or a toner composition precursor in a water-based medium to granulate, wherein the toner has an average circularity of 0.925 to 0.970, and the toner composition and/or the toner composition precursor has a layered inorganic material in which at least a part of interlayer ions in the layered inorganic material has been exchanged with organic ions. | 06-18-2009 |
| 20090233213 | METHOD FOR PREPARING TONER, TONER PREPARED BY THE METHOD, AND IMAGE FORMING APPARATUS USING THE TONER - A method for preparing a toner including primarily pulverizing a toner composition powder including at least a binder resin and a colorant using a mechanical pulverizer to prepare a first particulate material with a weight average particle diameter of 7 to 30 μm; secondarily pulverizing the first particulate material using a jet air pulverizer having a pulverization plate to prepare a second particulate material; and classifying the second particulate material in two steps to prepare particles of the toner with a weight average particle diameter of 2 to 6 μm and an average circularity of 0.93 to 0.96. A toner including toner particles including at least a binder resin and a colorant and prepared by the method. An image forming apparatus including an image bearing member configured to bear an electrostatic image thereon; and a developing device configured to develop the electrostatic image with a developer including the toner. | 09-17-2009 |
| 20100028796 | MAGNETIC CARRIER AND TWO-COMPONENT DEVELOPER - A magnetic carrier and two-component developer are provided alleviating coarse images, fogging when printing is done after a copier body is left standing for one week in a high temperature and high humidity environment and carrier adhesion after extensive operation in a low image ratio. The magnetic carrier includes magnetic carrier particles including porous magnetic core particles and a resin, wherein in a mercury intrusion method applied to the porous magnetic core particles, a pore diameter in which a differential pore volume in the specific pore diameter range becomes maximum is in a specific range, and when the maximum value of a differential pore volume in the specific pore diameter range is defined as P1 and the maximum value of a differential pore volume in the specific pore diameter range is defined as P2, P1 is in a specific range and the ratio P2/P1 is in a specific range. | 02-04-2010 |
| 20100119967 | MAGNETIC CARRIER AND TWO-COMPONENT DEVELOPER - A magnetic carrier and a two-component developer are provided which have remedied blank areas, fog after leaving, carrier sticking during running, and image density variations before and after running. The magnetic carrier has magnetic carrier particles having at least porous magnetic core particles and a resin. The magnetic carrier particles satisfying the specific conditions (a), (b) and (c) where, in a reflected electron image of cross sections of the magnetic carrier particles as photographed with a scanning electron microscope, straight lines that divide a cross section of a magnetic carrier particle into 72 at intervals of 5° are drawn from a reference point of the cross section thereof toward the surface of the magnetic carrier particle; the magnetic carrier particles being contained in an amount of 60% by number or more. | 05-13-2010 |
| 20100124717 | COLORED RESIN PARTICLES, MANUFACTURING METHOD OF THE COLORED RESIN PARTICLES AND TONER FOR ELECTROSTATICALLY CHARGED IMAGE DEVELOPMENT - Colored resin particles, each includes: a resin; and a colorant, wherein a value of average equivalent circle diameter A (μm) of the colored resin particles is 3≦A≦6, an average degree of circularity B of the colored resin particles satisfies the following expression (1), and | 05-20-2010 |
| 20100143835 | ELECTROPHOTOGRAPHIC TONER AND METHOD OF PREPARING THE SAME - Provided are an electrophotographic toner and a method of preparing the same. The toner includes a latex, a coloring agent, and a release agent, and has a selected amount of wax exposed on the surface of the toner. | 06-10-2010 |
| 20100183970 | ELECTROSTATIC IMAGE DEVELOPING CARRIER, ELECTROSTATIC IMAGE DEVELOPER, PROCESS CARTRIDGE, IMAGE FORMING METHOD, AND IMAGE FORMING APPARATUS - An electrostatic image developing carrier includes a ferrite particle that contains magnesium element in an amount of about 3.0 wt % or more and about 10.0 wt % or less and manganese element in an amount of about 0.2 wt % or more and less than about 1.0 wt %; and a resin layer that covers the ferrite particle. | 07-22-2010 |
| 20100183971 | MAGNETIC CARRIER, TWO-COMPONENT DEVELOPER AND IMAGE FORMING METHOD - A magnetic carrier having magnetic carrier particles each containing at least a magnetic core particle and a resin; the magnetic carrier having a resistivity of from 1.0×10 | 07-22-2010 |
| 20110003244 | TONER, METHOD FOR PREPARING THE TONER, AND IMAGE FORMING METHOD USING THE TONER - The toner includes a binder resin; a colorant; and a release agent. The first inter-particle force Fp(A) of the toner, which is measured under an environmental condition of 23° C. and 60% RH after the toner is pressed for 1 minute at 25° C. under a compression stress of 15 kg/cm | 01-06-2011 |
| 20110020746 | ELECTROSTATIC IMAGE DEVELOPER, DEVELOPER CARTRIDGE, PROCESS CARTRIDGE, IMAGE FORMING APPARATUS AND IMAGE FORMING METHOD - An electrostatic image developer is provided, the electrostatic image developer including: a carrier for an electrostatic image developer, the carrier including a core particle which has a plurality of projections on a surface of the core particle; and electrostatic image developing toners, wherein the electrostatic image developer satisfies following relationships of formulae (1) and (2): | 01-27-2011 |
| 20110143277 | TONER, BINARY DEVELOPER, AND IMAGE FORMING METHOD - It is an object of the present invention to provide a toner having the transfer efficiency and the cleanability in combination, exhibiting excellent stress resistance, and ensuring the low-temperature fixing. | 06-16-2011 |
| 20120107738 | TAGGENT FLAKES FOR COVERT SECURITY APPLICATIONS HAVING A SELECTED SHAPE - A plurality of flakes are provided that can be used in ink or paint wherein the flakes are of a size that requires magnification to see their shape. The flakes are in the form of regular polygons, such as squares, triangle or rectangles. A breaking or grinding process is used to break a foil into these shaped flakes and frames or walls are provided within the foil sheet so as to delineate the shapes and these lines provided by frames or walls will facilitate breakage in a preferred manner such that the flakes break into selected shaped polygons. Due to the breakage or grinding process, small remnants are typically still present on the shaped flakes as a result of the way in which the foil and flakes are broken, however with magnification, one can see the resultant regular polygonal shape. To clearly see the remnants one requires increased magnification and the remnant itself provides a type of signature. It can be seen as a taggent within a taggent. | 05-03-2012 |
| 20120208120 | TONER FOR USE IN THE DEVELOPMENT OF ELECTROSTATIC LATENT IMAGES, ELECTROSTATIC LATENT IMAGE DEVELOPER, AND IMAGE FORMING METHOD - A toner for use in the development of electrostatic latent images contains colored particles including at least a binder resin, a coloring agent and a releasing agent, and an external additive. An average circularity of the toner is 0.975 or more; a median of arithmetic average height distribution of the toner is 0.05 μm or more and not more than 0.12 μm; and a fluctuation of arithmetic average height is not more than 35. Preferably, a value of 90% accumulation of the arithmetic average height distribution of the toner is less than 0.15 μm; and a fluctuation of number average particle size and a fluctuation of circularity of the toner are not more than 25 and not more than 2.5, respectively. The electrostatic latent image developer contains the foregoing toner and a carrier, and the image forming method uses the foregoing toner or the, foregoing developer. | 08-16-2012 |
| 20120258395 | TONER FOR DEVELOPING ELECTROSTATIC LATENT IMAGE - A toner for developing an electrostatic latent image includes toner particles. An average aspect ratio of the toner particles, having predetermined diameters of at least 3 μm and less than 10 μm, is in the range from about 0.820 to about 0.900, and the difference between the maximum value and minimum value among the average aspect ratios D3, D4, D5, D6, D7, D8, and D9 is up to 0.07. Dn represents an average aspect ratio of those toner particles having a diameter of at least n μm and less than n+1 μm. | 10-11-2012 |
| 20130059248 | METHOD FOR PRODUCING STRUCTURED PARTICLES - Method for producing structured particles specifically nanoparticles, toners for laser printers and photocopiers, particularly chemical toner with particular product properties. The method produces toners of improved performance. Method relates particularly to the selection and properties of the base materials and utilizing these properties to design the toner product properties that result in improved performance. | 03-07-2013 |
| 20130236830 | TONER, BINARY DEVELOPER, AND IMAGE FORMING METHOD - It is an object of the present invention to provide a toner having the transfer efficiency and the cleanability in combination, exhibiting excellent stress resistance, and ensuring the low-temperature fixing. | 09-12-2013 |
| 20140127622 | TAGGENT FLAKES FOR COVERT SECURITY APPLICATIONS HAVING A SELECTED SHAPE - A plurality of flakes are provided that can be used in ink or paint wherein the flakes are of a size that requires magnification to see their shape, in the form of polygons, such as squares, triangle or rectangles. A breaking or grinding process is used to break a foil into these shaped flakes and frames or walls are provided within the foil sheet so as to delineate the shapes and these lines provided by frames or walls will facilitate breakage in a preferred manner such that the flakes break into selected shaped polygons. Remnants are typically present along flake edges due to the grinding and breakage process however with magnification, one can see the resultant regular polygonal shape. To clearly see the remnants one requires increased magnification and the remnant itself provides a type of signature. It can be seen as a taggent within a taggent. | 05-08-2014 |
| 20140134534 | Sustainable Toner - The present disclosure describes toner that is composed substantially of biodegradable and recycled materials. | 05-15-2014 |
| 20150378271 | TONER AND METHOD OF PRODUCING THE TONER - Provided is a toner, including a toner particle having a core particle containing a binder resin and a colorant. The toner particle has a protrusion on a surface thereof, and the protrusion contains an olefin-based polymer having a cyclic olefin structure. When an average radius of curvature of the protrusion, an average particle diameter of the core particle, a projected area of the toner particle, and a projected area of the protrusion that are calculated from a planar projected image of an image of the toner particle photographed with a scanning electron microscope are represented by Rs (μm), Rc (μm), S, and S1, respectively, the average radius of curvature Rs of the protrusion is 0.004Rc μm or more and 0.100Rc μm or less, and an average of a surface coverage “100×S1/S” % is 5% or more and 90% or less. | 12-31-2015 |
| 20160041481 | TONER AND METHOD FOR MANUFACTURING TONER - To provide a toner from which an image having a stable image density can be obtained with reduced occurrence of pollution of members, even when a toner container is filled with a larger amount of toner than a conventional amount for long-term use. A toner including a toner particle and an external additive containing an organic-inorganic composite fine particle and an inorganic fine particle A; wherein the organic-inorganic composite fine particle includes a resin particle and an inorganic fine particle B, the resin particle has a surface with a convex derived from the inorganic fine particle B; has a specific number average particle diameter (D1) and a specific shape factor SF-2; and has a specific fixed state to the toner particle; the organic-inorganic composite fine particle has a specific unit diffusion index on the toner particle surface; the inorganic fine particle A has a specific BET specific surface area. | 02-11-2016 |
| 20160041483 | MAGNETIC TONER - The present invention provides a magnetic toner that is excellent in low temperature fixability and that is also excellent in developability, suppression of fogging and transfer efficiency even in a long period of use. The magnetic toner of the present invention is a magnetic toner including a magnetic toner particle containing a binder resin and a magnetic member, and an inorganic fine particle “a” and an organic-inorganic composite fine particle, wherein the magnetic toner has (i) a true specific gravity of 1.40 g/cm | 02-11-2016 |
| 20160202621 | TONER AND IMAGE FORMING METHOD | 07-14-2016 |
| 20160202622 | ELECTROSTATIC CHARGE IMAGE DEVELOPING TONER, ELECTROSTATIC CHARGE IMAGE DEVELOPER, AND TONER CARTRIDGE | 07-14-2016 |
