摘要:
A stator 13 on whose outer circumference a plurality of magnetic poles 13a are arranged is mounted on a substrate 11, and a rotor 14 is rotatably disposed around the stator. The inner circumferential face of the rotor is provided with a magnet 15 magnetized to have alternately opposite polarities in a direction opposing the stator, and magnetized to have alternately opposite polarities in a direction opposing the substrate. The outer circumferential ends of the magnetic poles of the stator are provided with a first extended portion 13c that extends from a magnetic pole base 13d to the substrate side, and a second extended portion 13b that extends from the magnetic pole base to a side opposite the substrate side. A face of the substrate opposing the rotor is provided with a FG pattern 19 outside the outer circumferential face of the stator such that the FG pattern opposes the magnet. Accordingly, it is possible to improve the precision in detecting the rotational speed by reducing noise superimposed on the FG signal, while securing a high driving efficiency.
摘要:
Provided is a light-emitting module, a light source device and a liquid crystal display device in which unevenness in the luminance and color hardly occurs as compared to conventional technology. A light-emitting module 100 is structured such that a plurality of element columns, each composed of light-emitting elements 120 arranged in line, are mounted on a substrate 110, and each element column is individually sealed by a separate sealing member 130. The light source device and the liquid crystal device each include the above light-emitting module 100.
摘要:
A method of manufacturing a semiconductor device includes providing a semiconductor wafer and forming at least one first trench in the wafer having first and second sidewalls and a first orientation on the wafer. The first sidewall of the at least one first trench is implanted with a dopant of a first conductivity at a first implantation direction. The first sidewall of the at least one first trench is implanted with the dopant of the first conductivity at a second implantation direction. The second implantation direction is orthogonal to the first implantation direction. The first and second implantation directions are non-orthogonal to the first sidewall.
摘要:
A method of manufacturing a semiconductor device includes providing a semiconductor wafer and forming at least one first trench in the wafer having first and second sidewalls and a first orientation on the wafer. The first sidewall of the at least one first trench is implanted with a dopant of a first conductivity at a first implantation direction. The first sidewall of the at least one first trench is implanted with the dopant of the first conductivity at a second implantation direction. The second implantation direction is orthogonal to the first implantation direction. The first and second implantation directions are non-orthogonal to the first sidewall.
摘要:
A motor driving device (100) includes an inverter (20), a speed control unit (40), and a regeneration preventing means (50). The inverter (20) converts supplied DC power to driving power for driving a motor (10), and supplies the driving power to the motor (10). The speed control unit (40) generates a speed control signal group based on a speed command signal Sref and a speed detection signal N, and adjusts the driving power based on a drive control signal VSP1 included in the speed control signal group, thereby controlling the speed of the motor (10). The regeneration preventing means (50) determines whether the motor (10) is in a state possibly causing regenerative phenomena or in a state not causing regenerative phenomena based on the speed command information included in the speed command signal Sref and the speed detection information included in the speed detection signal N, and performs a regeneration reduction process to reduce regenerative phenomena according to the determination result, thereby preventing regenerative phenomena.
摘要:
An image forming apparatus of the present invention includes a movable body to be charged and a charger including a charging member that contacts or adjoins the body to be charged and applies a voltage, including an AC component, to the charging member for thereby charging the body. A protection substance for protecting the surface of the body from deterioration ascribable to charging is caused to exist on the body. The number of particular elements, contained in the protection substance and detected by an X-ray photon spectral analyzer (XPS) in a zone where the charging member charges the body, is held in a particular ratio to the total number of all elements constituting the outermost surface of the body and also detected by the XPS.
摘要:
A charging device includes a charging member which is applied with a voltage including an alternating current voltage superimposed on a direct current voltage to charge an image carrier. An equation of “7≦f/v≦17” is satisfied, where “f” is a frequency (Hz) of the alternating current voltage, and “v” is a moving speed (mm/sec) of the image carrier.
摘要:
An image forming apparatus including an image bearing member, a charging device, a transfer device, a lubricant supplying device, a developing device to develop the latent image with a developer, a discharging device, a cleaning device, and a controlling device configured to control an lubricant supplying mode and a lubricant removing mode in which at least a portion of the lubricant is removed from the surface of the image bearing member, a method of using the image forming apparatus, and a process cartridge used with the image forming apparatus.
摘要:
A charging device of the present invention includes a charging member and a body to be charged forming a nip therebetween. Charge-promoting conductive grains, frictionally charged to polarity opposite to the polarity of a voltage applied to the charging member, are held at the above nip. The charging device is operable in a cleaning mode for cleaning the body to be charged.