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| Number | Title | Issue Date |
| 7809296 | Printing device toner control including rest recovery system, method and algorithm A method and computer program for preventing excess supply of toner in an imaging device include detecting a change in a tribo-electric charge of toner after a period of inactivity of the imaging device, compensating a toner dispense control value, such as a PID (Pr... | 10/05/2010 |
| 7734206 | Image forming apparatus An image forming apparatus including an exposure device, a development device, an image density detection device, a supply device for supplying a toner to the development device, a cleaning device for cleaning the surface of an image bearing member, a driving torque... | 06/08/2010 |
| 7664414 | Liquid developing device and wet image forming device When the temperature of the liquid toner has fluctuated by T1 or more (Step S3: YES), the equation obtained by measuring the liquid toner is modified (Steps S4 through S7). This equation is obtained based on the output voltage value of th... | 02/16/2010 |
| 7627260 | Development apparatus, process cartridge, and image forming apparatus A development apparatus can uniform a toner density by controlling the phase of a toner density fluctuation, and can inhibit fluctuation of the toner density and variation of the toner charge amount. The development apparatus is configured to have a phase control me... | 12/01/2009 |
| 7532833 | Printing apparatus, printing system, and prediction method of usage of printing agent A printing apparatus, a printing system, and a prediction method of the usage of a printing agent can be configured to predict, prior to a processing for developing a printing image, the usage of a printing agent required for the printing. In order to do so, layout ... | 05/12/2009 |
| 7493058 | Image forming apparatus and toner concentration controlling method The image forming apparatus includes a developing device that holds a two-component developer to develop an image, a detecting unit that outputs a reference output value and a second output value when the two-component developer is stirred and carried at a stirring/... | 02/17/2009 |
| 7433613 | Method and device for setting the toner concentration in the developer station of an electrophotographic printer or copier In a method and system for setting toner concentration of a toner particle-carrier particle mixture in a developer station for development of a latent charge image on a carrier, a sensor is arranged in the developer station measuring the toner concentration. Toner f... | 10/07/2008 |
| 7356268 | Developing device A controller determines the degree of acuteness of the resonant oscillation of a piezoelectric oscillator, based on the developer's fluidity detection data detected by the piezoelectric oscillator. The toner density output data detected by a toner density sensor is ... | 04/08/2008 |
| 7349655 | Developing device and method of forming images A developing device configured to carry out development of an electrostatic image using color toner particles and transparent toner particles includes color and transparent developing units configured to store toner particles, carrier particles, and additive particl... | 03/25/2008 |
| 7315704 | Wet-type image forming apparatus, a toner concentration sensing method, and a method for controlling wet-type image forming apparatus A wet-type image forming apparatus and method is provided to sense and maintain a toner concentration level of a developer, and includes a counter for counting the number of dots of input print data, a memory for storing an average coverage of a print medium which c... | 01/01/2008 |
| 7292806 | Image forming apparatus and an image forming method using a plurality of monochromatic developer cartridges Prior to the execution of a printing operation, a print preparatory operation is conducted only on a priority developer cartridge out of the plurality of monochromatic developer cartridges mounted to the developing unit thereby bringing the cartridge into a printabl... | 11/06/2007 |
| 7289750 | Image forming apparatus and an image forming method using a plurality of monochromatic developer cartridges The apparatus is brought into a printable state by selecting one print preparatory process from first and second print preparatory processes and conducting the selected print preparatory process prior to the execution of the printing operation. That is, the printing... | 10/30/2007 |
| 7286946 | Transmission characteristic measuring device transmission characteristic measuring method, and amplifier A transfer characteristics measuring device automatically measures the transfer characteristics of each channel of a multi-channel acoustic reproduction system m a multi-channel acoustic reproduction environment, while allowing normal multi-channel reproduction to p... | 10/23/2007 |
| 7280773 | Image forming apparatus for determining completion of a toner-end recovery operation An image forming apparatus of the present invention includes a toner content controller configured to set the target value of a toner content sensor for determining, after a developing unit has been driven for a preselected period of time since the detection of the ... | 10/09/2007 |
| 7263300 | Image forming device that provides status of developer After a laser printer has been inactive for a long period of time, the CPU in the laser printer compares the remaining toner status determined based on a detection by a toner sensor during a warm-up operation prior for performing a printing operation and the last re... | 08/28/2007 |
| 7257336 | Developing device, image forming device equipped therewith, and developing density adjusting method In case of a developing density correction based on a test image (patch image) density, normally, the developing density is carried out in a short period of time by correction (γ correction) of a developing bias and a grid voltage (S11). When a correction am... | 08/14/2007 |
| 7251420 | Method and apparatus for image forming capable of effectively detecting toner density An image forming apparatus includes an image forming mechanism and a control device. The image forming mechanism performs an image forming operation under predetermined image forming conditions, and includes an image carrying member for forming an electrostatic late... | 07/31/2007 |
| 7228080 | System for active toner concentration target adjustments and method to maintain development performance A closed-loop toner concentration adjustment system extends xerographic process control performance with a system and method including a first controller to adjust toner concentration (TC) in a developer of the imaging device to alter a DMA level of the imaging devi... | 06/05/2007 |
| 7218870 | Image forming apparatus An image forming apparatus includes an image forming portion, a developing apparatus, a developer density detection portion, an image density detection portion, an environment detection portion, and a developer replenishing apparatus. The image forming apparatus fur... | 05/15/2007 |
| 7212752 | Image forming apparatus and a developing apparatus having a unit for determining a mixture ratio of two types of magnetic toner based on magnetic permeability and amount An electrophotographic image forming apparatus includes a developer reservoir for accommodating a single-component mixed developer including two types of toner having a generally identical hue and different reflection densities. A magnetic substance is added to one ... | 05/01/2007 |
| 7180532 | Dry ink concentration monitor interface with automated temperature compensation algorithm A system, method, and apparatus for adjusting dry ink concentration in a developing station (30) of a printer is disclosed. The adjustment is performed by calculating the thermal drift of a dry ink monitor (40) and applying the result as a compensating... | 02/20/2007 |
| 7177557 | Method for calculating toner age and a method for calculating carrier age for use in print engine diagnostics The present invention generally relates to a digital imaging system or a light lens based imaging system. More specifically, the present invention provides an improved method and apparatus for calculating toner age and, additionally, carrier age using a toner concen... | 02/13/2007 |
| 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 |
| 7149439 | Method and device for estimating toner concentration and image forming apparatus equipped with such device A method and device for estimating toner concentration in a two-component developer consisting of toner and carrier for an electrophotographic image forming apparatus, and an image forming apparatus equipped with such device. The above method and device calculate an... | 12/12/2006 |
| 7149437 | Image forming apparatus, and control system, cartridge and memory medium for the same apparatus The image forming apparatus onto which a cartridge having a developing apparatus and memory medium is detachably mountable, a detector for detecting toner concentration, and a control unit for selecting an operational mode from a first operational mode and second op... | 12/12/2006 |
| 7139503 | Cleaning apparatus with conductive member A cleaning apparatus includes a brush member to be brought into contact with a member to be cleaned to remove toner particles attached to the member. The brush member includes a conductive material. ... | 11/21/2006 |
| 7139516 | Developer replenishment apparatus The developer replenishment apparatus includes a first developer container for accommodating the developer for replenishment, a first conveyance member disposed in the first developer container to discharge the developer for replenishment through a first opening of ... | 11/21/2006 |
| 7133144 | Closed loop feedback system for alternative toners Errors in regard to toner materials which may or may not correspond to toner materials installed in a developer unit of a print engine are avoided by providing storage of data concerning the toner in the printer rather than the dedicated processor. A feedback link i... | 11/07/2006 |
| 7124097 | Method and system for ordering a consumable for a device A method for ordering one or more consumables for a device includes selecting one or more of the consumables used in the device to order using the device and submitting the order for the selected consumables using the device to one or more suppliers. A device for or... | 10/17/2006 |
| 7110684 | Cartridge for replenishing developer including a memory device and a control system featuring the cartridge Using two or more developer replenishing units, each of which has a first storage for storing identification information related to developer and a second storage for storing history information related to the developer, if the identification information read out fr... | 09/19/2006 |
| 7106462 | Systems and methods for analyzing a print job The present invention includes as one embodiment a method for ascertaining resource requirements of a print job sent to a printer via a print driver. The method includes creating a document of the print job with the print driver and reading the print job into memory... | 09/12/2006 |
| 7099609 | Developing device A developing apparatus includes a developing container for containing a developer comprising toner and a carrier, said developing container is partitioned into a first chamber and a second chamber constituting a circulation path of the developer; a first developing ... | 08/29/2006 |
| 7092648 | Method of controlling an amount of toner charging in an electrophotographic image forming apparatus and apparatus using the same A method of controlling an amount of toner charging in an electrophotographic image forming apparatus using a two-component developing agent, and an apparatus using the method. The method includes counting an agitation time when a toner and a carrier are mixed and a... | 08/15/2006 |
| 7088943 | Image forming apparatus, apparatus for supplying toner and developing apparatus using therefor Regulatory member having a groove formed therein is provided at area where toner storage chamber and toner stirring chamber are in communication with each other. A quantity of toner supplied from toner storage chamber to toner stirring chamber is regulated by rotati... | 08/08/2006 |
| 7088932 | System and method for measuring charge/mass and liquid toner conductivty contemporaneously A method measures the conductivity (σ) of a liquid or paste electrophotographic toner by providing two parallel plane conductive plates with a uniform separation (d) between the plates to form a space between the plates; filling the space between the plates with li... | 08/08/2006 |
| 7068393 | Image ratio measuring method for image forming apparatus Image data supplied to an image forming apparatus are converted into image data linearly correlated with the image density, and the image ratio is calculated by dividing the number of pixels in which the toner is deposited during image formation based on the thus-co... | 06/27/2006 |
| 7062206 | Toner supplying apparatus and image forming apparatus A toner supplying apparatus for feeding a toner to a developing device to develop a latent image on an image bearing member. The apparatus includes: a toner separating member communicating to the developing device, to separate the toner from the mixed fluid containi... | 06/13/2006 |
| 7062190 | Image forming apparatus, interface apparatus, control apparatus, image forming apparatus setting operation method, and control method An image forming apparatus includes resource amount designation keys for allowing a user to designate an amount of resource, display control keys for controlling to display a plurality of setting options which enable image formation with the designated amount of res... | 06/13/2006 |
| 7054566 | Image forming apparatus, cartridge, and storage medium An image forming apparatus includes a developing device including a developing receptacle for accommodating a developer including a toner and a carrier, and a detector for outputting a signal corresponding to a toner density of the developer within the developer rec... | 05/30/2006 |
| 7054569 | Wet electrophotographic image forming machine and method for recognizing a use life of a development cartridge used therein A wet electrophotographic image forming machine that informs a user of a timing for replacing development cartridges. The image forming machine comprises a control section for sensing the condition of the developer stored in one or more developer housings on the bas... | 05/30/2006 |
