Patent application number | Description | Published |
20090009798 | OPTICAL WRITING DEVICE, IMAGE FORMING APPARATUS AND LIGHT QUANTITY CORRECTING METHOD - Disclosed is an optical writing device comprising: a plurality of light emitting diode elements which are arranged in a main scanning direction; and a plurality of radio frequency identification tags which are provided correspondingly to one or more light emitting diode elements among the plurality of light emitting diode elements, each of the plurality of radio frequency identification tags having a light quantity correcting data storage section to store light quantity correcting data for adjusting a light quantity of the one or more light emitting diode elements, and a communication section to perform a wireless communication. | 01-08-2009 |
20100051781 | EVALUATION DEVICE OF OPTICAL WRITING DEVICE AND EVALUATION METHOD THEREOF - Disclosed is an evaluation device of an optical writing device, comprising: the optical writing device; a light reception section; a drive section; and a control section to light each light emitting element in a previously set lighting pattern based on a light amount; to drive the drive section to move the light reception section to a position opposite to the light emitting element to be lit; to calculate characteristic data based on a light amount value of the light received by the light reception section; to calculate a first calculation value based on the characteristic data for each light emitting element; to calculate a second calculation value different from the first calculation value based on the characteristic data; to calculate a third calculation value based on the first calculation value and the second calculation value; and to instruct the display section to display the third calculation value. | 03-04-2010 |
20100128236 | IMAGE FORMING APPARATUS AND LIGHT INTENSITY CORRECTION METHOD - Disclosed is an image forming apparatus including an optical writing device including, a light source section composed of a plurality of light emitting elements arranged in a main scanning direction; an optical section including a plurality of coupled lenses to form an image on a light exposure face by gathering light emitted from the light emitting elements; and a storage section to store first correction data for correcting the light intensity of the plurality of light emitting elements and second correction data for correcting an optical characteristic specific to the coupled lens, and a control section to read out the first correction data and the second correction data from the storage section of the optical writing device and to correct the first correction data based on the second correction data. | 05-27-2010 |
20100195460 | OPTICAL WRITING APPARATUS, IMAGE FORMING APPARATUS AND DATA WRITING METHOD - An optical writing apparatus includes: a light source section having a plurality of light emitting elements arrayed in a main scanning direction; an optical section having a plurality of imaging lenses that condense irradiated light from the light emitting elements to form an image on an exposure surface; and a storage section. The storage section stores: first correction data including light amount correction values for correcting amounts of light of the respective light emitting elements; and second correction data. The second correction data includes: local correction target position information in an array direction of the light emitting elements that is calculated based on optical characteristics data specific to the imaging lenses; and a correction reference value for correcting one or more of the light amount correction values of one or more of the light emitting elements arrayed at local positions indicated by the correction target position information. | 08-05-2010 |
20110215762 | RECHARGEABLE POWER SUPPLY SYSTEM ARRANGED BETWEEN EXTERNAL POWER SUPPLY AND LOAD - A power supply system includes a power storage module including first and second power storage units spaced by a predetermined distance from each other, and a power generating unit being capable of contacting with both of the first and second power storage units concurrently, and formed of a thermoelectric converting element; and a control unit for controlling charging and discharging of said first and second power storage units. In the first and second power storage units, different thermal reactions occur depending on whether charging or discharging operations is performed. The thermal reactions are a heat absorbing reaction and a heat generating reaction. The control unit renders one of the first and second power storage units dischargeable, and renders the other power storage unit chargeable. | 09-08-2011 |
20130073879 | IMAGE FORMING APPARATUS - An image forming apparatus includes a functional unit, a first power supply circuit supplying electric power to the functional unit from a commercial power supply, a second power supply circuit including a self-generation power supply, and a third power supply circuit including a power storage unit storing electric power and a charging circuit charging the power storage unit upon receipt of supply of electric power from at least one of the commercial power supply and the self-generation power supply. In accordance with the amount of power supply from the self-generation power supply, higher priority is given to supply of electric power to the functional unit from at least one of the second and third power supply circuits than to supply of electric power from the first power supply circuit. | 03-21-2013 |
20130145184 | ELECTRONIC APPARATUS AND IMAGE FORMING APPARATUS - An electronic apparatus comprising: a main body including a reception unit and a processing unit; and a power supply device switches between an operation state for supplying power from an external power source to the main body and a standby state for supplying power from a secondary battery to the reception unit without supplying power from the power source to the main body. Charging of the battery with power from the power source is performed during the operation state and is terminated when a value indicating power level of the battery reaches a threshold value Vt satisfying (discharge lower limit VL+Vs)≦Vt06-06-2013 | |
20130214606 | ELECTRONIC DEVICE AND POWER-SOURCE DEVICE - Electronic device comprising: processing unit including accepting part accepting processing request from external device and executing process specified by request; secondary battery connected with external power source; and power-source device transitioning to operating state when request is accepted in waiting state, and transitioning to waiting state when processing unit completes executing process, wherein, in waiting state, power supply from external power source to processing unit is stopped and secondary battery supplies power to accepting part, and in operating state, power is supplied from external power source to processing unit. Power-source device includes controller executing first charge control operation to cause external power source to charge secondary battery when, in operating state, voltage of secondary battery is not higher than threshold, and end executing first charge control operation when transitioning to waiting state, controller updating threshold in response to increase in number of times first charge control operation is executed. | 08-22-2013 |
20140147157 | IMAGE FORMING DEVICE AND CHARGING METHOD FOR SECONDARY BATTERY - The image forming device includes a reception unit, an image forming unit, a switching unit, a detection unit, and a charging unit. The switching unit switches the image forming device between a first mode in which the reception unit is not supplied a voltage from a power source, is supplied power from a secondary battery, and receives image forming requests, and a second mode in which the image forming unit is supplied the voltage and performs image forming. The detection unit detects a value of an amount of energy of the secondary battery. In the second mode, the charging unit charges the secondary battery by supplying the voltage to the secondary battery when the value is equal to or less than a threshold value, and the charging unit boosts the voltage and supplies the boosted voltage to the secondary battery when the value is greater than the threshold value. | 05-29-2014 |