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| Number | Title | Issue Date |
| 8107831 | Electronic device and image forming apparatus An electronic device and an image forming apparatus capable of notifying that a voltage drop will occur during operation of the device due to an abnormality of a power source facility before actual operations. A load is configured to operate on electric power suppli... | 01/31/2012 |
| 8023842 | Methods and apparatus for adjusting printing device power consumption based on usage data Methods and apparatus for adjusting printing device power consumption based on previously acquired usage data. The printing device has multiple energy consumption states including at least a ready state in which the printing device is ready to commence processing of... | 09/20/2011 |
| 7809293 | Image forming apparatus and method of checking for disconnections between voltage generating circuits and electrodes thereof A method and apparatus is provided for checking for a disconnection, with respect to an image forming apparatus including electrical loads and voltage generating circuits that generate voltages that are applied to the electrical loads, by determining if the voltage ... | 10/05/2010 |
| 7761017 | Power supply apparatus and image forming apparatus A power supply apparatus includes an error detecting unit configured to perform error detection to detect that an output node and another node are placed in a short-circuit state or open-circuit state, a condition change detecting unit configured to detect a change ... | 07/20/2010 |
| 7715738 | High power supply to control an abnormal load A high power supply to control an abnormal load includes a high voltage power processor to amplify a supplied DC power and to output the amplified DC power, a trans/rectifier to transform the DC power to a high voltage power and to rectify the high voltage power, a ... | 05/11/2010 |
| 7711275 | Image forming apparatus having an imaging condition setting control A printer in which, while achieving a stabilization of image quality by process control processing, the generation of unnecessary wait time to the user, shortening of lifespan of the apparatus and needless consumption of toner caused by unnecessary execution of the ... | 05/04/2010 |
| 7664410 | Image forming apparatus with control of power to a fixing unit An image forming apparatus including a main power supply unit, a chargeable auxiliary power supply unit, a fixing unit including a heater configured to receive power from at least one of the main power supply unit and the auxiliary power supply unit, and a voltage o... | 02/16/2010 |
| 7574152 | AC high-voltage device, image forming apparatus, and AC high-voltage output controlling method which restarts the AC high-voltage after an overload An AC high-voltage device includes a voltage controlling unit that controls an AC transforming unit. The AC transforming unit transforms supplied power to an AC high voltage. The voltage controlling unit includes a constant-voltage controlling unit and an turn-off u... | 08/11/2009 |
| 7565086 | Power control of image forming apparatus According to an aspect of the present invention, an image forming apparatus comprising: a heater heating unit configured to heat a heater at a first temperature or a second temperature lower than the first temperature when waiting for fixation of a formed image; and... | 07/21/2009 |
| 7505702 | High power supply to control an abnormal load A high power supply to control an abnormal load includes a high voltage power processor to amplify a supplied DC power and to output the amplified DC power, a trans/rectifier to transform the DC power to a high voltage power and to rectify the high voltage power, a ... | 03/17/2009 |
| 7483644 | Image forming apparatus and high voltage power thereof An image forming apparatus including an AC high voltage power supply, a DC high voltage power supply, and a high voltage power supply apparatus, which outputs an output voltage at an output end by superposing an output of the AC high voltage power supply and an outp... | 01/27/2009 |
| 7412185 | Controlling average power to a fuser Disclosed are embodiments for controlling one or more subsystems of an imaging system to manage average power to a fuser. ... | 08/12/2008 |
| 7398405 | Output system, printing system, printing device management device and printing device, print instruction program, printing device management program and printing device control program, and printing method An output system having an output device that performs output based on output data so that the output device performs the output after having acquired authentication. In the system, an operating state controlling unit outputs a power-save-cancel command for causing ... | 07/08/2008 |
| 7372479 | Apparatus and method for optical image formation control An image forming apparatus for forming images with an electrophotographic system. The image forming apparatus includes a laser drive unit configured to control a laser light, and an image data transfer control unit configured to control image data from to the laser ... | 05/13/2008 |
| 7362591 | Power supply device and image forming apparatus When a detected current value deviates from a range between an upper limit value and a lower limit value, a pulse width adjustment operation for increasing or decreasing a currently set counter value is repeatedly performed at every operation time interval such that... | 04/22/2008 |
| 7341326 | Image forming apparatus and method of controlling image forming apparatus An image forming apparatus by which an image formed on a printing medium by image forming means on the basis of image data can be related to the image data includes a controller which prepares management information corresponding to the image data, and controls an o... | 03/11/2008 |
| 7333745 | Power supply device and electronic apparatus employing the same An electronic apparatus and a power supply device used with the electronic apparatus is capable of automatically shutting off power from a power supply to the electronic apparatus when an access cover is opened. The electronic apparatus includes a casing that houses... | 02/19/2008 |
| 7324773 | Image forming device having a power consumption control device controlling power supplied to a fixing device A sheet counter counts points corresponding to the number of sheets subjected to a fixing process performed by a fixing unit during the image forming operation (during the copy state). A heater actuation time counter counts points corresponding to the heater actuati... | 01/29/2008 |
| 7317455 | Bias voltage offset circuit A bias offset voltage circuit for controlling one or more devices is disclosed. The bias offset voltage circuit includes a three voltage sources connected in series and a switching element. Each voltage source includes a positive terminal and a negative terminal. Th... | 01/08/2008 |
| 7283262 | Image forming apparatus and power control method A sub-CPU copes with a status obtaining request from a network in a sleep mode. Further, necessary least power control for updating a status in an image forming apparatus in the sleep mode is realized by the sub-CPU. ... | 10/16/2007 |
| 7277652 | Image-forming device that eliminates noise from a temperature detection signal A laser printer capable of controlling the operation of a fixing heater to heat a roller, including an energizing circuit for energizing a heater, a temperature detecting circuit such as thermistors, a noise canceling circuit, and a control circuit for controlling t... | 10/02/2007 |
| 7277654 | Electrophotographic power supply configuration for supplying power to a fuser A power supply control system for a fuser assembly in an electrophotographic apparatus includes a power supply and a fuser assembly. The power supply includes a first electrical path designated for a fuser assembly that operates at a first voltage and a second elect... | 10/02/2007 |
| 7272328 | Development component detection in an electrophotographic device An image forming device and method of detecting the presence or absence of components of one or more image forming units. Each image forming unit includes a replaceable component. A power supply transmits an input signal to the replaceable component. A detection cir... | 09/18/2007 |
| 7251431 | Image-reading apparatus and image forming apparatus There is described an image reading apparatus, which employs the electric double layer. The image reading apparatus includes: an electric power source; an analogue image signal generating section that is coupled to the electric power source through a power line and ... | 07/31/2007 |
| 7227281 | Causing operation of load in alternate, reduced peak power mode A system of one embodiment is disclosed that includes a load, a power supply, and a mechanism. The load is operable in a default mode and an alternate mode. The load has better performance in the default mode than in the alternate mode, and consumes less peak power ... | 06/05/2007 |
| 7212758 | Image-forming apparatus An image-forming apparatus is disclosed. The image-forming apparatus includes a fixing unit. The fixing unit includes: a heating part including a heating element; a power storage unit including a chargeable and dischargeable capacitor and supplying power to the heat... | 05/01/2007 |
| 7206527 | Information forming apparatus equipped with a fixing unit An image forming apparatus is disclosed having a fixing unit having a heating device, for heat fixing, a heating power supply section which is connected to the fixing unit to supply electric power supplied from a commercial power supply to the heating device, a volt... | 04/17/2007 |
| 7203432 | Job processing apparatus A job processing apparatus includes a job executing section, an operating section, an interface section, and a control section. The control section shifts the job processing apparatus from a normal operation mode to a power-saving operation mode after a lapse of sta... | 04/10/2007 |
| 7187877 | Image forming apparatus with detachable transfer unit An image forming apparatus includes an apparatus body (48); image bearing bodies (11) for forming electrostatic latent images; a transfer unit (19) opposed to the image bearing bodies and having transfer sections (15); a voltage supply ( | 03/06/2007 |
| 7181149 | Image forming apparatus There is described an image forming apparatus, in which the influence of the overall controlling section startup time is reduced, thereby cutting down the time from turning on of power to enabling of image formation. The image forming apparatus includes: a main powe... | 02/20/2007 |
| 7162166 | Image-forming apparatus having an automatic self-test reporting function and method thereof An image-forming apparatus having an automatic self-test reporting function and a method thereof. The image-forming apparatus has a function of preparing and printing a separate result report as to a result of the self test performed at the time when the image-formi... | 01/09/2007 |
| 7123847 | Image processing apparatus having a status holding function, and image processing system including the same In an image processing apparatus of the present invention, an image storage device stores a plurality of image data. A status holding unit holds a status table having respective status descriptors, corresponding to the plurality of image data stored in the image sto... | 10/17/2006 |
| 7116434 | Controlling a cluster operation To perform a cluster operation of a plurality of multi-function devices, if the number of devices in a stand-by state is smaller than a required number of devices, a device in a sleep state is restored to the stand-by state. In this case, a device that returns to th... | 10/03/2006 |
| 7099604 | Image forming apparatus A multi-function printer (MFP) has a main control circuit for setting the operation mode of the apparatus to either a normal operation mode or a power-saving operation mode. There are provided a main power supply circuit and an auxiliary power supply circuit for sup... | 08/29/2006 |
| 7088017 | Power supply control device for an image forming apparatus A power supply control device for an image forming apparatus of the present invention includes a shutoff detector for monitoring the state of a power switch. In response to the output signal of the shutoff detector representative of the turn-off of the power switch,... | 08/08/2006 |
| 7085506 | Method for controlling the state of developer material A method for maintaining developer material within in a predefined state through the scheduling of increased toner throughput coordinated among multiple developer housings. The method monitors developer material health at each developer station within a plurality of... | 08/01/2006 |
| 7062191 | Image forming device including AC loads driven by an AC power supply A printer (image forming device) (10), which includes AC loads driven by an AC power, is connected to an external device (30) via a single power line for a logic operation and a signal line. More specifically, a printer driver (11) and an engine... | 06/13/2006 |
| 7054570 | Image-forming apparatus An image-forming apparatus is disclosed. The image-forming apparatus includes a fixing unit. The fixing unit includes: a heating part including a heating element; a power storage unit including a chargeable and dischargeable capacitor and supplying power to the heat... | 05/30/2006 |
| 7016624 | Method for controlling an image forming device An image forming device according to the present invention has an architecture including a control unit producing power-on and power-off signals to control individual power supply to functional units activated by supplied power, the power-on signal being an instruct... | 03/21/2006 |
| 7006773 | Image forming apparatus, image forming method, and fixing device thereof The present invention provides an image forming apparatus having a fixing unit in which electric power is supplied from the power supply unit to a heater thereof, and the formed image is fixed by heating the recording medium on which the image has been formed, a det... | 02/28/2006 |
