Class / Patent application number | Description | Number of patent applications / Date published |
399028000 | Color | 9 |
20090074431 | IMAGE FORMING APPARATUS - An image forming apparatus includes a toner-layer filling-rate lowering unit that causes a toner layer of toner images to be formed on an image carrier so that the toner layer has sufficient optical transparency for exposing and the toner-layer filling rate is set relatively low; and a toner rolling rate adjusting unit that rolls the toner images at a predetermined toner rolling rate in accordance with the toner-layer filling rate when the toner images are transferred to the transferring/fixing unit. | 03-19-2009 |
20100150583 | IMAGE FORMING APPARATUS - In a copier having an image data converter that sets the C density, the M density and the Y density to a density obtained by multiplying the density of black in the RGB system by a CMY mixture ratio and sets the K density to a density obtained by multiplying the density of black by a K mixture ratio when black in the RGB system is converted into the CMYK system, the image data converter sets the K mixture ratio to a K reference mixture ratio when TK≧PHK, and sets the K mixture ratio to a K high mixture ratio that is higher than the K reference mixture ratio when TK PHK. Here, TK is a K toner amount of consumption insufficiency which is a K toner amount to be consumed to prevent toner deterioration at the driving amount of the developing unit, and PHK is a K high predetermined value. | 06-17-2010 |
20110188868 | IMAGE FORMING APPARATUS AND A COLOR MATERIAL CONTROLLING METHOD - An image forming apparatus comprising: an attachment of a cartridge configured to accommodate a color material; a memory configured to memorize a current cartridge information which shows whether the cartridge attached to the attachment is a first cartridge which accommodates a first color material or a second cartridge which accommodates a second color material; and a controller configured to read the current cartridge information from said memory when the current cartridge attached to the attachment is exchanged to a new cartridge, further said controller configured to judge the new cartridge based on the current cartridge information read from said memory, further said controller configured to temporary stop initiating of a supply of the color material from the new cartridge until the color material supplied from the current cartridge remains in the image forming apparatus when the new cartridge is different from the current cartridge and said controller configured to initiate a supply of the color material from said new cartridge when the color material supplied from said current cartridge does not remain in the image forming apparatus. | 08-04-2011 |
20110206391 | IMAGE FORMING APPARATUS - Provided is an image forming apparatus that includes: a buffer configured to temporarily store therein toner supplied from a toner cartridge and to be fed to a developing unit; a magnetic reed switch configured to sense magnet variation occurring in a sensing range and sequentially output signals each indicating a result of the sensing; a toner level indicator plate disposed within the buffer to swing up and down about a fixed edge in response to a change in a level of the toner that remains in the buffer, the toner level indicator plate having a magnet on a free edge thereof, the magnet being made to reach the sensing range in a state where the toner level indicator plate has swung down. | 08-25-2011 |
20110311243 | REPLACEMENT CONSUMABLE UNIT MANAGEMENT APPARATUS AND IMAGE FORMING APPARATUS - A replacement consumable unit management apparatus is provided with: a receiver which receives consumable unit replacement information indicating that one consumable unit of one color or more than one consumable unit of different colors has been replaced with a new one, from one or more than one image forming apparatus which the replacement consumable unit management apparatus can access via a communication circuit; a consumable unit manager which manages the remaining amount information or the life information of the one or more than one consumable unit, and stock information indicating the states of the stocks of replacement consumable units for the one or more than one consumable unit; a determiner which, if the receiver receives the consumable unit replacement information while a consumable unit which cannot be replaced with a new one because of no stock and a consumable unit whose remaining amount information or life information is smaller than a first predetermined value are both used at the same place as the new consumable unit most recently loaded, makes a first determination that a first replacement consumable unit of the same color as the consumable unit which cannot be replaced with a new one because of no stock and a second consumable unit of the same color as the consumable unit whose remaining amount information or life information is smaller than the first predetermined value should be delivered together; and a transmitter which outputs a delivery instruction as determined by the determiner. | 12-22-2011 |
20120070167 | IMAGE FORMING APPARATUS, METHOD FOR CONTROLLING SAME, AND STORAGE MEDIUM FOR SAME - A controller unit determines the operation mode of a device when an error relating to a color cartridge has been detected. When the controller unit determines that the operation mode of the device is a toner replacement priority mode, the controller unit determines whether or not the number of times a monochrome printing job has been executed is equal to or greater than a threshold value without resolving the error. When the number of times a monochrome printing job has been executed is equal to or greater than a threshold value without resolving the error, the controller unit switches the operation mode of the device to a monochrome performance priority mode. | 03-22-2012 |
20120275801 | IMAGE FORMING APPARATUS - An image forming apparatus which forms an electrostatic latent image on a photosensitive drum, serving as an image carrier, develops the image using toners of a plurality of colors, and transfers a toner image onto a printing medium in accordance with an electrophotographic process. A toner consumption amount detection unit detects the toner consumption amount of each of the toners of the plurality of colors, a decision unit decides upon a color to form a patch, based on input image data and the detected toner consumption amount of each color, a patch sensor detects the density of a patch of the decided color by generating the patch at a predetermined position on the photosensitive drum serving as an image carrier outside an area to form a color image, and an adjustment unit adjusts the printing density based on the detected patch density. | 11-01-2012 |
20140064750 | DEVELOPER AND TEST METHOD THEREOF - A color-fadable developer contains a binder resin, a color generation compound and a color developing agent. When the developer is heated from a temperature range of 0° C. to 20° C. to a temperature range of 150° C. to 180° C. at a temperature increase rate range of 5° C./min to 10° C./min a first time and a second time, a first differential scanning calorimetry curve based on a measurement by differential scanning calorimetry during the first heating has an endothermic peak that is missing from a second differential scanning calorimetry curve based on a measurement differential scanning calorimetry during the second heating, and has a different peak than the endothermic peak caused by a glass transition point of a binder resin. | 03-06-2014 |
20140248062 | IMAGE FORMING APPARATUS - According to embodiments, an image forming apparatus forms an image using at least one coloring material from among a plurality of coloring materials including a discolorable coloring material. In a case where the residual amount of any one coloring material from among the plurality of coloring materials is less than a predetermined value, a control unit of the image forming apparatus controls an image formation using another coloring material other than the coloring material of which the residual amount is less than the predetermined value. | 09-04-2014 |