Patent application number | Description | Published |
20110116820 | DEVELOPER CONCENTRATION ADJUSTMENT APPARATUS, METHOD FOR ADJUSTING DEVELOPER CONCENTRATION, AND IMAGE FORMING APPARATUS USING THE SAME - This invention provides a developer concentration adjustment apparatus, a method for concentration adjustment, and an image forming apparatus, in which concentration adjustment is performed by use of a stirring load as a substitute characteristic of viscosity which represents a developer concentration, wherein a trouble of abnormality generation in toner concentration detection due to drying-adhesion of a residual developer on the stirrer is reduced. At the time of finishing the concentration adjustment, a concentration adjustment tank is made to be empty and the stirrer is cleaned by carrier liquid or a liquid developer having a concentration lower than a predetermined concentration. Alternatively, the stirrer is cleaned by empty-stirring operation not being put in a cleaning developer. | 05-19-2011 |
20110217081 | LIQUID DEVELOPMENT APPARATUS AND CLEANING METHOD - Provided is a liquid development apparatus having a constitution in which liquid developer containing carrier liquid with toner dispersed therein is supplied from a liquid developer/cleaning liquid supply member on a pool forming member arranged facing to a supply roller so as to form a pool of the liquid developer, from which pool the liquid developer is supplied to the supply roller, wherein a liquid developer/cleaning liquid supply member supplies cleaning liquid on a pool forming member to form a suitable pooling portion of the cleaning liquid and the liquid developer remaining on the surface of the supply roller is removed and cleaned. | 09-08-2011 |
20120315577 | Liquid Developer - A liquid developer includes toner particles, an insulating liquid, and a dispersant, and is characterized in that the toner particles includes a resin and a pigment dispersed in the resin, the resin includes a polyester resin, the dispersant includes a basic polymeric dispersant, and a solid obtained by drying the liquid developer has a melting point of at least 55° C. | 12-13-2012 |
20130065176 | LIQUID DEVELOPER - A liquid developer includes at least toner particles and an insulating liquid. The toner particles include a resin and a color material dispersed in the resin. 90 mass % or more of the insulating liquid is aliphatic saturated hydrocarbon having a carbon number of 11 to 16, and 20 to 60 mass % of the insulating liquid is aliphatic saturated hydrocarbon having a carbon number of 11 to 12. | 03-14-2013 |
Patent application number | Description | Published |
20130115552 | LIQUID DEVELOPER - A liquid developer used for wet-type image forming apparatuses includes toner particles and an insulating liquid, the toner particles include a resin, a pigment, and a pigment dispersant, the pigment includes a pigment having an acid group, and the pigment dispersant is a basic polymer dispersant including units derived from ε-caprolactone. | 05-09-2013 |
20130177337 | IMAGE FORMING DEVICE - An image forming device includes a development member carrying a developer for forming a toner image at an image carrier, a cleaning member abutting against the development member for removing the developer remaining on the development member, a transportation member provided in contact with the development member for transporting the developer supplied to the development member, and a driving unit controlling driving of at least one of the transportation member and the development member. The driving unit executes preliminary driving of the development member and transportation member for a given time under a state where supply of the developer to the transportation member is stopped, prior to main driving in image formation. Consumption and/or degradation of the developer in preliminary driving is suppressed while strain at the development member or transportation member formed of a resilient member is removed. | 07-11-2013 |
20140234769 | LIQUID DEVELOPER - A liquid developer includes an insulating liquid and a plurality of toner particles. The plurality of toner particles has a median size not smaller than 1 μm and not greater than 3 μm as a whole. In the plurality of toner particles, average circularity is not smaller than 0.90 and not greater than 0.96, and a standard deviation of circularity is not smaller than 0.02 and not greater than 0.10. | 08-21-2014 |
20140234770 | LIQUID DEVELOPER - A liquid developer includes an insulating liquid and a plurality of toner particles. The plurality of toner particles has a volume-based median size not smaller than 0.5 μm and not greater than 3 μm as a whole, and a volume-based coefficient of variation not lower than 40% and not higher than 130%. The plurality of toner particles includes a first toner particle group of the toner particles having a particle size not greater than 1 μm. The number of toner particles constituting the first toner particle group occupies not lower than 20% of the total number of toner particles. The toner particles in the first toner particle group have an average circularity not smaller than 0.945. | 08-21-2014 |