Patent application number | Description | Published |
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 |
20110182594 | IMAGE FORMING DEVICE WITH MOUNTED REPLACEABLE UNIT, METHOD OF CHECKING OPERATION IN THAT IMAGE FORMING DEVICE, AND STORAGE MEDIUM STORING OPERATION CHECKING PROGRAM DIRECTED TO THAT IMAGE FORMING DEVICE - When a unit containing a fuse is mounted, in response to detection of a potential indicating that the fuse has not been blown by a detection circuit, a current for blowing the fuse is supplied from a blowing circuit to the mounted unit containing the fuse, and operation of the blowing circuit is checked based on potentials detected by the detection circuit before current supply and after current supply, respectively. When a unit containing a non-blown component instead of a fuse is mounted, a current is supplied from the blowing circuit to the mounted unit containing the non-blown component, and operation of the blowing circuit is checked based on potentials detected by the detection circuit before current supply and during current supply, respectively, or potentials detected by the detection circuit before current supply and after current supply, respectively. | 07-28-2011 |
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 |
20110319244 | PAPER FOLDING DEVICE FOR THREE-FOLDING SHEET OF PAPER - In a paper folding device, a first driving unit for forming a first folding line on the paper moves a first folding plate member to the paper fed to a first feeding position until load on the first folding plate member reaches a prescribed value or higher. A time period from the start of driving of the first folding unit by the first driving unit to the start of driving of a second folding unit by a second driving unit is determined based on characteristic of paper. | 12-29-2011 |
20130095991 | SHEET FOLDER - A sheet folder includes a blade for bending a sheet, a pair of folding rollers for sandwiching the sheet bent by the blade, a heating unit for heating a folded part of the sheet sandwiched between the pair of folding rollers by the blade, a temperature detection unit for detecting a temperature of the folded part, and a control unit for keeping a state in which the sheet is sandwiched between the pair of folding rollers until at least one of a temperature change and a temperature of the folded part that are detected by the temperature detection unit satisfies a prescribed condition after the blade allows the sheet to be sandwiched between the pair of folding rollers. | 04-18-2013 |