Patent application number | Description | Published |
20110095406 | TECHNOLOGY OF REDUCING RADIATION NOISE OF SEMICONDUCTOR DEVICE - A first lead frame group is constituted by a plurality of lead frames that are connected to the first circuit, terminals of the plurality of lead frames being provided on a first side of the semiconductor device. A second lead frame group is constituted by a plurality of lead frames that are connected to the second circuit, terminals of the plurality of lead frames being provided on a second side of the semiconductor device. A suspension lead for suspending a die pad that supports the semiconductor chip, the suspension lead being arranged from a corner portion that is formed by the first side and the second side toward the semiconductor chip. Among a group of the terminals of the first lead frame group that are provided on the first side, a terminal on the corner portion side is a terminal for inputting or outputting a signal with a high frequency. | 04-28-2011 |
20120027447 | HIGH-VOLTAGE GENERATION APPARATUS AND IMAGE FORMING APPARATUS - A high-voltage generation apparatus raises, in a transient-state period elapsed since output of a voltage is started until the voltage reaches a target value, the output voltage by a change amount corresponding to the target value without performing feedback control. | 02-02-2012 |
20120027448 | HIGH-VOLTAGE GENERATION APPARATUS - A high-voltage generation apparatus raises, when switching from a state where a voltage having a predetermined polarity is output to a state where a voltage having a polarity opposite to the predetermined polarity is output, the voltage having the predetermined polarity in change amounts corresponding to the voltage having the predetermined polarity and a target voltage having the opposite polarity in a transient-state period elapsed until the voltage reaches the target voltage. | 02-02-2012 |
20130070484 | HIGH VOLTAGE GENERATING DEVICE AND IMAGE FORMING APPARATUS - A high voltage generating device includes a control portion configured to raise a voltage output from a transformer to a first voltage by controlling a driving signal generated by a signal generating portion based on a voltage detected by a voltage detecting portion. The control portion raises the voltage with a predetermined rate of change until the voltage detected by the voltage detecting portion reaches a value of a second voltage smaller than a value of the first voltage, and the control portion raises the voltage output from the transformer with a rate of change smaller than the predetermined rate of change after the voltage detected by the voltage detecting portion reaches the value of the second voltage. | 03-21-2013 |
20140168677 | IMAGE FORMING APPARATUS THAT CONTROLS IMAGE FORMATION CONDITION - An image forming apparatus includes: a receiving unit configured to receive reflection light emitted by a light emitting unit, and output a detection signal corresponding to an amount of received reflection light; a detection unit configured to output, as an output signal, a signal corresponding to a difference between a value that corresponds to an amount of reflection light from a first position at which a detection image having one or more lines in a direction different from a movement direction is formed and a value that corresponds to an amount of reflection light from a second position different from the first position; and a control unit configured to control an image formation condition related to density of an image to be formed, based on a peak value of the output signal. | 06-19-2014 |
20140308049 | IMAGE FORMING APPARATUS HAVING TWO OR MORE LIGHT RECEIVING UNITS - An image forming apparatus includes an image carrier, an image forming means for forming a patch image on the image carrier, a light emitting means, a plurality of light receiving means adjacently arranged so as to receive light reflected from the patch image when light is irradiated by the light emitting means onto the patch image which moves with movement of the image carrier and each including one or more light receiving elements, and an output means for outputting an output signal that depends on a difference between a received light quantity of a first light receiving means and a received light quantity of a second light receiving means that are respectively odd-numbered and even-numbered in the arrangement order of the light receiving means. | 10-16-2014 |
20150278662 | IMAGE FORMING APPARATUS AND DETECTION APPARATUS - An image forming apparatus includes a detection means for detecting one of position and density information of a detection image based on a signal corresponding to a difference between a value of a detection signal corresponding to a first position of one of the detection image on a image carrier and a surface of the image carrier and an average value of a value of the detection signal corresponding to a second position on a downstream side with respect to the first position in a moving direction of the detection image and a value of the detection signal corresponding to a third position on an upstream side with respect to the first position in the moving direction during a time when the detection image formed on the image carrier passes through an irradiation region of the irradiation means. | 10-01-2015 |
20150293488 | IMAGE FORMING APPARATUS AND DETECTION APPARATUS - An image forming apparatus includes: irradiation means for irradiating an image carrier having a detection image with light; light-receiving means for receiving reflected light of the light irradiated by irradiation means and outputting a detection signal corresponding to a light-receiving amount of the reflected light including a specular-reflected light component; and detection means for detecting one of position information and density information of the detection image based on a signal corresponding to a difference between a value of the detection signal corresponding to the light-receiving amount of the reflected light from a first position where the detection image is formed and a value of the detection signal corresponding to the light-receiving amount of the reflected light from a second position different from the first position. | 10-15-2015 |