Abstract: A printed wiring board includes a first terminal array and a second terminal array comprising a plurality of terminals, a first differential signal line connecting a first terminal of the first terminal array to a predetermined number of terminals including a second terminal of the second terminal array, a second differential signal line connecting a third terminal of the first terminal array to a number of terminals including a fourth terminal of the second terminal array, which is bigger than the predetermined number of terminals wherein at least one of a line width and a line interval of one pair signal lines configuring the first differential signal line and the second differential signal line is determined so that differential impedance of the second differential signal line becomes higher compared with differential impedance of the first differential signal line.

Abstract: An image forming apparatus has an image forming unit and a feeding unit for feeding a recording material at a predetermined speed to the image forming unit. A reflective type sensor reads irradiated light reflected off of the recording material and an image reading unit reads the light so as to obtain a surface image of the recording material so that a feed control unit can control the feeding of the recording medium so that a moving distance is shorter and in the case of feeding it at a predetermined speed while the recording material is read by the image reading unit. In the image forming apparatus a reflective type determination unit determines a predetermined attribute of the recording material using the surface image of the recording material read by the image reading unit so that the image forming apparatus can determine a kind of recording material based on the attribute obtain so as to form the image on the recording material.

Abstract: A sensor system includes an LED configured to emit light to a recording medium and a light-receiving sensor configured to receive a transmitted light that has passed through the recording medium after having been emitted from the LED to the recording medium. An emitting optical axis of the LED is away from a perpendicular receiving optical axis of the light-receiving sensor.

Abstract: An element substrate includes a plurality of terminals, a first receiving circuit and a second receiving circuit each receiving a differential signal via one of the terminals included in the plurality of terminals, a driving circuit including a first input unit for inputting a first signal and a second input unit for inputting a second signal and driving a driving element based on the first signal and the second signal, and a setting circuit for setting a first connection state of connecting an output from the first receiving circuit to the first input unit and connecting an output from the second receiving circuit to the second input unit, and a second connection state of connecting an output from the first receiving circuit to the second input unit and connecting an output from the second receiving circuit to the first input unit based on an externally input signal.

Abstract: A printing element substrate, comprising a printing element, a switching element which drives the printing element based on an input control signal, a first current source which generates a predetermined current, a second current source which generates a current based on an input voltage, and a current generation circuit which generates the control signal by amplifying a current obtained by adding a current generated by the second current source to a current generated by the first current source, and then generates the control signal by amplifying a current generated by the first current source.

Abstract: A liquid crystal display device is provided with a liquid crystal display panel, and a data driver IC that drives the liquid crystal display panel. The liquid crystal display panel is provided with a gate line, first and second data lines, and a pixel that includes a first sub-pixel connected to the gate line and the first data line and a second sub-pixel connected to the gate line and the second data line. The data driver IC is provided with a gamma correction circuitry and a drive circuitry. The gamma correction circuitry generates first gamma-corrected data by performing gamma correction on externally received image data in accordance with a first gamma curve, and generates second gamma-corrected data by performing gamma correction on the image data in accordance with a second gamma curve. The drive circuitry drives the first data line in response to the first gamma-corrected data and drives the second data line in response to the second gamma-corrected data.

Abstract: A digital-to-analog conversion circuit includes a gradation voltage generation circuit, a most-significant-bits decoder circuit, a least-significant-bits decoder circuit and a calculation circuit. The gradation voltage generation circuit generates multiple main voltages corresponding to most significant bits of the inputted data, and multiple sub voltages corresponding to least significant bits of the inputted data. The most-significant-bits decoder circuit selects one of the main voltages in accordance with the most significant bits, and the least-significant-bits decoder circuit selects one of the sub voltages in accordance with the least significant bits. The calculator circuit performs calculation processing by use of a first main voltage selected by the most-significant-bits decoder circuit, a first sub voltage selected by the least-significant-bits decoder circuit, and a reference voltage.

Abstract: A printhead manufacturing method comprises preparing a printing element substrate including a receiver including a first terminal and second terminal, a first input pad connected to the first terminal, a second input pad connected to the second terminal, and a plurality of selection pads connected to the second terminal via at least two resistive elements out of a plurality of printing elements to obtain combined resistances different from each other; preparing a head substrate including a first transmission line, and a second transmission line; selects one of the plurality of selection pads to be connected to the first transmission line in accordance with values of the combined resistances; and connecting at least one of the plurality of the selected selection pads and the first transmission line, connecting the first input pad and the first transmission line, and connecting the second input pad and the second transmission line.

Abstract: A liquid discharge head includes a liquid discharge head substrate including a discharge port through which a liquid is discharged, and a plurality of energy generating elements that generate energy for discharging the liquid from the discharge port, and a circuit board having flexibility including a pair of differential transmission lines for transmitting differential transmission signals used as logical signals for driving the energy generating elements, to the liquid discharge head substrate, and a voltage supply line for supplying a voltage applied to the energy generating elements to obtain the energy, to the liquid discharge head substrate, wherein the pair of differential transmission lines is provided on one surface of the circuit board, and the voltage supply line is provided on the other surface of the circuit board, which is on a reverse side of the one surface.

Abstract: A printed wiring board includes a first terminal array and a second terminal array comprising a plurality of terminals, a first differential signal line connecting a first terminal of the first terminal array to a predetermined number of terminals including a second terminal of the second terminal array, a second differential signal line connecting a third terminal of the first terminal array to a number of terminals including a fourth terminal of the second terminal array, which is bigger than the predetermined number of terminals wherein at least one of a line width and a line interval of one pair signal lines configuring the first differential signal line and the second differential signal line is determined so that differential impedance of the second differential signal line becomes higher compared with differential impedance of the first differential signal line.

Abstract: An element substrate includes a plurality of terminals, a first receiving circuit and a second receiving circuit each receiving a differential signal via one of the terminals included in the plurality of terminals, a driving circuit including a first input unit for inputting a first signal and a second input unit for inputting a second signal and driving a driving element based on the first signal and the second signal, and a setting circuit for setting a first connection state of connecting an output from the first receiving circuit to the first input unit and connecting an output from the second receiving circuit to the second input unit, and a second connection state of connecting an output from the first receiving circuit to the second input unit and connecting an output from the second receiving circuit to the first input unit based on an externally input signal.

Abstract: A display device includes a display panel, a data line driving circuit, a timing control unit and a parameter output unit. The data line driving circuit drives data lines on the display panel. The timing control unit outputs an input gradation signal based on an image signal to the data line driving circuit at a predetermined timing. The parameter output unit outputs a conversion parameter for executing gamma correction corresponding to characteristics between a driving voltage and a luminance of the display panel. The data line driving circuit includes: a correction circuit which converts the input gradation signal to an output gradation signal based on the conversion parameter and outputs the converted signal, and a D/A conversion circuit which converts the output gradation signal to a data line driving signal of an analog signal and drive the data lines.

Abstract: An image forming apparatus has an image forming unit and a feeding unit for feeding a recording material at a predetermined speed to the image forming unit. A reflective type sensor reads irradiated light reflected off of the recording material and an image reading unit reads the light so as to obtain a surface image of the recording material so that a feed control unit can control the feeding of the recording medium so that a moving distance is shorter and in the case of feeding it at a predetermined speed while the recording material is read by the image reading unit. In the image forming apparatus a reflective type determination unit determines a predetermined attribute of the recording material using the surface image of the recording material read by the image reading unit so that the image forming apparatus can determine a kind of recording material based on the attribute obtain so as to form the image on the recording material.

Abstract: An image forming apparatus has an image forming unit and a feeding unit for feeding a recording material at a predetermined speed to the image forming unit. A reflective type sensor reads irradiated light reflected off of the recording material and an image reading unit reads the light so as to obtain a surface image of the recording material so that a feed control unit can control the feeding of the recording medium so that a moving distance is shorter and in the case of feeding it at a predetermined speed while the recording material is read by the image reading unit. In the image forming apparatus a reflective type determination unit determines a predetermined attribute of the recording material using the surface image of the recording material read by the image reading unit so that the image forming apparatus can determine a kind of recording material based on the attribute obtain so as to form the image on the recording material.

Abstract: A liquid crystal display in which it is possible to reduce the EMI noise ascribable to high harmonic contents in a charging/discharging current is disclosed. The liquid crystal display includes a source driver 10. The source driver includes output terminals (OUTn) that drive a liquid crystal panel, amplifiers 15 that amplify a video signal and output switching circuits 17 each connected between an output of the amplifier 15 and the output terminal. The source driver also includes an output switch impedance control circuit 16 that controls the switching operation of the output switching circuits 17. When turned on during the operation of switching the output switching circuit 17, the output switch impedance control circuit 16 exercises control to progressively lower the impedance of the output switching circuit 17.

Abstract: A sensor system includes an LED configured to emit light to a recording medium and a light-receiving sensor configured to receive a transmitted light that has passed through the recording medium after having been emitted from the LED to the recording medium. An emitting optical axis of the LED is away from a perpendicular receiving optical axis of the light-receiving sensor.

Abstract: A liquid crystal display device is provided with: a liquid crystal display panel and a data driver IC driving the liquid crystal display panel. The liquid crystal display panel includes first and second gate lines, a data line and a pixel including a first sub-pixel connected to the data line and the first gate line and a second sub-pixel connected to the data line and the second gate line. The data driver IC includes: a gamma correction circuitry generating first gamma-corrected data by performing gamma correction on externally-received image data in accordance with a first gamma curve and generating second gamma-corrected data by performing gamma correction on the image data in accordance with a second gamma curve; and a drive circuitry driving the data line in response to the first gamma-corrected data in a first horizontal period and driving the data line in response to the second gamma-corrected data in a second horizontal period following the first horizontal period.

Abstract: A liquid crystal display device is provided with a liquid crystal display panel, and a data driver IC that drives the liquid crystal display panel. The liquid crystal display panel is provided with a gate line, first and second data lines, and a pixel that includes a first sub-pixel connected to the gate line and the first data line and a second sub-pixel connected to the gate line and the second data line. The data driver IC is provided with a gamma correction circuitry and a drive circuitry. The gamma correction circuitry generates first gamma-corrected data by performing gamma correction on externally received image data in accordance with a first gamma curve, and generates second gamma-corrected data by performing gamma correction on the image data in accordance with a second gamma curve. The drive circuitry drives the first data line in response to the first gamma-corrected data and drives the second data line in response to the second gamma-corrected data.

Abstract: A sensor system includes an LED configured to emit light to a recording medium and a light-receiving sensor configured to receive a transmitted light that has passed through the recording medium after having been emitted from the LED to the recording medium. An emitting optical axis of the LED is away from a perpendicular receiving optical axis of the light-receiving sensor.

Abstract: The invention is objected to perform fixing in an optimum fixing condition even with various kinds of recording materials or the like while improving usability by discriminating the kinds of recording materials. An image reading sensor 123 includes a reflective LED 301, a transmissive LED 303 disposed on the opposite side relative to a recording material 304 for detecting the transmitted amount of light, a CMOS area sensor 211, and an imaging lens 1113. The light from the reflective LED 301 as a light source is applied toward the surface of the recording material 304, and the reflected light from the recording material 304 is collected via the lens 303 and an image is formed on the CMOS area sensor 211. The LED 301 is disposed so as to apply LED light to the surface of the recording material 304 diagonally at a predetermined angle.