Patent application number | Description | Published |
20110310412 | IMAGE FORMING APPARATUS, NOISE CANCELLATION METHOD, AND RECORDING MEDIUM - An image forming apparatus comprising: a sound-level meter that measures operating noise of a rotating portion; a sound data generator that generates a noise control sound data object with the same amplitude but with the inverted phase to the operating noise; a speaker that emits sound based on the noise control sound data object; a memory that stores in advance a noise control sound data object generated to cancel out operating noise measured while the rotation frequency of the rotating portion is changed from a first rate to a second rate; and a controller that measures operating noise of the rotating portion and generates a noise control sound data object to cancel out the operating noise, then emits sound based on the noise control sound data object, while the rotating portion runs in steady state, meanwhile reads out from the memory, a suitable noise control sound data object from the memory and emit sound based on the noise control sound data object, during the transition of the rotation frequency of the rotating portion. | 12-22-2011 |
20120093537 | IMAGE FORMING APPARATUS PERFORMING CONTROL OF CHANGING TARGETS OF POWER SUPPLY FROM CHARGING DEVICE - An image forming apparatus includes a charging device for performing charging and discharging using a power storage device, and a plurality of loads each serving as a target of power supply from said charging device and being used in operation of the image forming apparatus. The image forming apparatus obtains information about an operation status of the image forming apparatus and sets priorities for being a target of power supply from the charging device for the plurality of loads, according to the obtained information. The image forming apparatus controls power supply operation of the charging device according to the information about the remaining capacity of the power storage device and the set priorities. | 04-19-2012 |
20140064774 | IMAGE FORMING APPARATUS, POWER CONTROL METHOD, AND RECORDING MEDIUM - An image forming apparatus comprises: a piezoelectric sensor that produces an variable output signal depending on the amount of infrared energy; a human body detecting device having a lens that forms a detecting area serving for detecting if the person enters; a peak detector that detects a peak of an output signal produced when the person enters the detecting area; an offset voltage judgment portion that judges if the output signal falls to the offset voltage after the peak; a moving direction judgment portion that judges the direction in which the person moves in the detecting area; and a mode controller that switches the power supply mode to a first mode if the power supply mode is found to be a second mode requiring less power than the first mode while the moving direction judgment portion judges that the person moves toward the image forming apparatus. | 03-06-2014 |
Patent application number | Description | Published |
20130301062 | PRINTER CONTROL DEVICE, PRINTING PROXY CONTROL METHOD, AND COMPUTER-READABLE STORAGE MEDIUM FOR COMPUTER PROGRAM - A printer control device for performing control such that a second printer serves as a proxy to execute a print job to be executed by a first printer is provided. The printer control device includes a speed determination portion configured to determine whether or not a second speed is higher than a first speed, the second speed being a print speed set in the second printer, the first speed being a print speed set in the first printer; and a control unit configured to control, when the speed determination portion determines that the second speed is higher than the first speed, the second printer to execute the print job at a third speed lower than the second speed. | 11-14-2013 |
20150362870 | IMAGE FORMING DEVICE - An image forming device capable of performing both-side printing, statically transferring, by application of a transfer voltage, an unfixed image formed on an image carrier to a recording sheet when passing through a transfer position, and then thermally fixing the unfixed image when the recording sheet passes through a fixing position where a heating rotating body is disposed. The image forming device acquires an index value of a water content at each of a plurality of sheet-passing-direction positions of the recording sheet having undergone thermal fixing of an unfixed image statically transferred onto a first side thereof, and controls, for each of the positions, a transfer voltage applied for statically transferring an unfixed image onto a second side of the recording sheet, so that the lower the water content indexed by the index value of the position, the greater an absolute value of the transfer voltage. | 12-17-2015 |
20150368054 | IMAGE FORMING APPARATUS - An image forming apparatus performs a continuous printing job in a normal sheet interval mode as an initially setting mode when an arrival waiting control such as a feed retry control is not performed. In the normal sheet interval mode, a feeding action is performed such that a sheet interval between successive two sheets is set at a predetermined normal sheet interval during the continuous printing. When the initially setting mode is not maintained, the continuous printing is performed with switching the sheet interval mode to an extended sheet interval mode for performing the feeding action with an extended sheet interval which is longer than the normal sheet interval. | 12-24-2015 |