Patent application number | Description | Published |
20090208238 | IMAGE FORMING DEVICE AND METHOD - An image forming device that uses only one temperature sensor to detect temperatures of the recording sheet and a rotation member for fixing, and can perform the temperature adjustment control carefully in detail during the image forming operation. The CPU 61 performs the temperature adjustment control 1 by executing the temperature adjustment program 64 | 08-20-2009 |
20100232826 | COOLING APPARATUS AND IMAGE FORMATION APPARATUS - In an image formation state, to cool a recording sheet on a route from a fixer to a paper ejection roller, a blast fan assumes a first position restrained by a first fixture. Also, in another state, to cool a recording sheet on the catch tray, the blast fan assumes a second position restrained by a second fixture. To transition from the image formation state to another state, the blast fan sends a strong blast in a reverse direction from the normal blast direction. A bias is generated on the blast fan due to the resulting reactive force, the blast fan becomes free from the restraint of the first fixture, and shifts from the first position to the second position. Conversely, to transition from another state to the image formation state, a strong blast is sent in the same direction as the normal blast direction, and the blast fan shifts from the second position to the first position. | 09-16-2010 |
20100290795 | TONER CONCENTRATION SENSOR AND TONER CONCENTRATION CONTROL METHOD - In this toner concentration sensor, as the magnetic permeability of a two-component developer | 11-18-2010 |
20110222895 | IMAGE FORMATION APPARATUS, IMAGE FORMATION SYSTEM, AND OUTPUT CONTROL METHOD - An image formation apparatus is connectable to a post processing apparatus for performing a post process to a sheet. The image formation apparatus includes: a power source for outputting a voltage to a first load and a second load, the first load being provided in the image formation apparatus and being involved in image formation, the second load being provided in the post processing apparatus and being involved in the post process; a power source controller for increasing the output voltage of the power source during an operation of the second load; and a load controller for controlling an operation of the first load such that an output of the first load falls within a predetermined range during the operation of the second load. | 09-15-2011 |
20110229183 | IMAGE PROCESSING DEVICE FOR PROCESSING JOBS TO BE EXECUTED BY IMAGE FORMING DEVICE INCLUDING FIXING UNIT - An image processing device processes jobs to be executed by an image forming device incorporating a fixing unit. The image processing device receives a plurality of jobs. Based on an attribute of each of the plurality of jobs, the image processing device determines, out of the plurality of jobs, at least one job for which fixing can be performed after heating of the fixing unit is stopped and for which fixing is performed after fixing for another job is finished. The image processing device reorders the processing of the plurality of jobs so that fixing is performed for the at least one job after the fixing for the other job is finished. In this way, an image processing device and a method of controlling an image processing device can be provided where power consumption can be reduced. | 09-22-2011 |
20110274456 | IMAGE FORMING APPARATUS AND METHOD OF CONTROLLING IMAGE FORMING APPARATUS - An image forming apparatus includes a fixing device having a heater, a signal generator for generating a prescribed cyclic signal in conformity with a waveform of an AC power supply applied to the heater, and a controller for controlling power feed to the heater. The controller determines whether a cycle of the prescribed cyclic signal becomes shorter than a prescribed period or not. When the controller has determined that the cycle has become shorter than the prescribed period, the controller controls power feed to the heater under phase control and when the controller has determined that the cycle has not become shorter than the prescribed period, the controller controls power feed to the heater under zero crossing control. | 11-10-2011 |
20120128386 | IMAGE FORMING APPARATUS CONTROLLING OPERATION NOISE VOLUME - An image forming apparatus has a moving part that operates for forming an image on recording paper. When an instruction to make a transition to a silent mode is input to an input unit, first control is executed so that operation noise of the moving part is reduced. When an instruction to cancel the silent mode is input to the input unit, second control is executed so that the operation noise of the moving part is increased stepwise to return to the state before the first control. | 05-24-2012 |
20130259496 | IMAGE FORMING APPARATUS - An image forming apparatus calculates a positional deviation in the main and sub-scanning directions for each color by forming registration patterns in two arrays along a sub-scanning direction on an image carrier. Each registration pattern in one array is paired with an identical registration pattern in the other array. A first sensor has: a light-emitting element irradiating one registration pattern in a pair; a photodetector for regular reflection light; and a photodetector for diffuse reflection light. A second sensor has: a light-emitting element irradiating the other one in the pair; and a photodetector for regular reflection light. The relative positions of a pair of registration patters calculated using the respective sensors are corrected so as to reduce the positional deviation between the calculated positions by the amount of offset deviation estimated occur between positions detected by the respective sensors when the registration patterns are without positional deviation. | 10-03-2013 |
20140003830 | IMAGE FORMING APPARATUS CAPABLE OF ACCURATELY ESTIMATING POWER CONSUMPTION LEVEL | 01-02-2014 |
20140294413 | IMAGE FORMING APPARATUS - After a toner image is transferred from a photoreceptor to an intermediate transfer belt, a surface of the photoreceptor is destaticized by a static eraser including a plurality of light emitting elements arranged in an axial direction of the photoreceptor. A first density sensor and a second density sensor for detecting densities of toner applied to the intermediate transfer belt are provided at a position where a large quantity of light from the static eraser is applied to the photoreceptor surface and a position where a small quantity of light from the static eraser is applied to the photoreceptor surface. In a case where a density difference between the detected toner densities exceeds a predetermined threshold value, a destaticization controller carries out an additional destaticizing operation by the static eraser. | 10-02-2014 |