Abstract: A stator includes four split cores arranged in the circumferential direction. Each split core includes a yoke including a pair of joint parts, and a tooth. The shape of an end of the tooth is asymmetrical. An angle ?1 formed by a side surface of the tooth and a side surface of the yoke on the inner side in the radial direction of the stator satisfies 90 degrees<?1<180 degrees.

Abstract: An image forming apparatus includes a notification portion configured to notify replenishment information for prompting replenishing a developing container with developer in a case where an index is equal to or larger than a preset threshold value. The index is set such that the index increases in accordance with rotation of the developer bearing member and decreases in accordance with replenishment of the developing container with the developer. An amount of increase of the index per predetermined amount of rotation of the developer bearing member is larger in a case where an amount of the developer in the developing container is smaller. An amount of decrease of the index according to the replenishment of the developing container with the developer is larger in a case where an amount of replenished developer is larger.

Abstract: A sensor magnet includes a first magnetic pole part including a magnetic pole of a first polarity and a second magnetic pole part including a magnetic pole of a second polarity. A thickness of the first magnetic pole part in a direction toward a magnetic sensor is larger than a thickness of the second magnetic pole part in a direction toward the magnetic sensor.

Abstract: An endoscope of the invention includes: an insertion portion; a distal end portion; a pair of first observation image acquiring sections; a second observation image acquiring section; a pair of nozzles, each of which includes a spouting port for spouting fluid toward each of the pair of first observation image acquiring sections; a pair of first protruding portions, each of which is located close to the front surface of the distal end portion and has a maximum dimension in the radial direction larger than a dimension in the radial direction of each of the nozzles, and a pair of second protruding portions, each of which is located farther from the front surface of the distal end portion and has a maximum dimension in the radial direction larger than the dimension in the radial direction of each of the nozzles.

Abstract: A rotor includes a rotor core formed of a stacked body in which two or more first electromagnetic steel sheets and a second electromagnetic steel sheet are stacked in a direction of an axis, the rotor core having a magnet insertion hole passing through the stacked body in the direction of the axis, and a first permanent magnet and a second permanent magnet disposed in the magnet insertion hole. The magnet insertion hole has a first region in which the first permanent magnet is inserted, and a second region in which the second permanent magnet is inserted. Each of the two or more first electromagnetic steel sheets has a bridge dividing the magnet insertion hole into the first region and the second region. The second electromagnetic steel sheet has the magnet insertion hole in which the first region and the second region are formed continuously with each other.

Abstract: An image forming apparatus includes a rotatable image bearing member configured to bear an electrostatic latent image, a developing container configured to accommodate developer comprising toner, a developing member configured to develop the electrostatic latent image born on the image bearing member into a toner image by using the developer in the developing container, a transfer member configured to transfer the toner image born on the image bearing member onto the recording material, and a notification portion configured to notify replenishment information for prompting replenishing the developing container with the developer. The notification portion is configured to notify the replenishment information in a state in which an index correlated with a ratio of an amount of paper dust mixed in the developer in the developing container to an amount of the developer in the developing container has not exceeded a preset threshold value of the index.

Abstract: An image forming apparatus includes a notification portion configured to notify replenishment information for prompting replenishing a developing container with developer in a case where an index is equal to or larger than a preset threshold value. The index is set such that the index increases in accordance with rotation of the developer bearing member and decreases in accordance with replenishment of the developing container with the developer. An amount of increase of the index per predetermined amount of rotation of the developer bearing member is larger in a case where an amount of the developer in the developing container is smaller. An amount of decrease of the index according to the replenishment of the developing container with the developer is larger in a case where an amount of replenished developer is larger.

Abstract: A charging member which is driven so that the surface of the charging member has a speed difference from the surface of an image bearing member. In a cleaning operation for cleaning the charging member by transferring toner adhering to the surface of the charging member from the charging member to the image bearing member and collecting the transferred toner with a developing member, a first charging voltage forming a potential difference between the charging member and the image bearing member is applied to the charging member, and then a second charging voltage having the same polarity as that of the first charging voltage and an absolute value greater than that of the first charging voltage is applied. The potential difference is in a direction in which electrostatic force directed from the charging member to the image bearing member acts on the toner charged to normal polarity.

Abstract: A rotor includes a rotation shaft, a rotor core, and a permanent magnet. The rotor core includes a shaft fixing part having a shaft insertion hole in which the rotation shaft is inserted, an annular magnet holding part surrounding the shaft fixing part from outside in a radial direction about a central axis of the rotation shaft and being distanced from the shaft fixing part, and a connecting part connecting the shaft fixing part and the magnet holding part to each other. The permanent magnet is mounted in the magnet holding part and forms a first magnetic pole. A portion of the magnet holding part adjacent to the permanent magnet in a circumferential direction forms a second magnetic pole. The connecting part has at least two ribs distanced from each other in the direction of the central axis.

Abstract: A rotor includes a rotor core having an outer circumference extending in a circumferential direction about an axis, and having a magnet insertion hole along the outer circumference, and a permanent magnet disposed in the magnet insertion hole. The rotor core has a plurality of slits formed on an outer side of the magnet insertion hole in a radial direction about the axis, and a bridge extending to connect an inner side and an outer side of the magnet insertion hole in the radial direction. The plurality of slits have a first slit closest to an end of the magnet insertion hole in the circumferential direction, and a second slit closest to the bridge. When T1 represents a shortest distance from the magnet insertion hole to the first slit and R1 represents a shortest distance from the reference point to the second slit, R1>T1 is satisfied.

Abstract: A photoelectric conversion device comprising: a first substrate that includes a pixel circuit including a photoelectric conversion element; a second substrate having a signal processing circuit that drives the pixel circuit or processes a signal from the pixel circuit; a connection part electrically connecting the first substrate and the second substrate; and an inspection circuit, wherein the inspection circuit is formed in one of the first and second substrates and is connected to a wire supplying a first potential and being provided in the one of the first and second substrates, and the inspection circuit is connected via the connection part to a wire supplying a second potential and being provided in the other of the first and second substrates.

Abstract: A photoelectric conversion device including a plurality of substrates in a stacked state, the plurality of substrates including a first substrate and a second substrate electrically connected to each other, the photoelectric conversion device comprising: a memory cell unit including row-selection lines that are to be driven upon selection of a row of a memory cell array and column-selection lines that are to be driven upon selection of a column of the memory cell array; and a memory peripheral circuit unit that includes row-selection line connection portions and column-selection line connection portions so as to drive the row-selection lines and to drive the column-selection lines, wherein a first portion that is at least a part of the memory peripheral circuit unit is formed on the first substrate and the memory cell unit is formed on the second substrate.

Abstract: A semiconductor device has a first transistor of a first conductivity type and a second transistor of a second conductivity type, the first transistor is arranged in an active region of a semiconductor substrate, and a gate electrode and the active region overlap with each other in a plan view and also have a portion located between the source and the drain of the first transistor of the semiconductor substrate. In the channel width direction, an impurity concentration of the second conductivity type is higher at the end than on the center side of the portion.

Abstract: An electric motor includes a stator assembly, a rotor provided inside the stator assembly, and a heat sink to radiate heat from the stator assembly. The heat sink includes a base portion, and a heat radiating portion formed integrally with the base portion.

Abstract: A rotor has a shaft, a rotor core, and a position detection magnet. The rotor core is formed of electromagnetic steel sheets and has an annular shape about the shaft. The position detection magnet has an annular shape about the shaft and is attached to one side of the rotor core in an axial direction of the shaft. The position detection magnet has a first end surface facing the rotor core and a second end surface opposite to the first end surface. The position detection magnet has a tapered part at an inner periphery thereof, and the tapered part is inclined so that a distance from the shaft is maximum at the second end surface.

Abstract: An electric motor includes a rotor, a stator assembly, and a plurality of heat dissipation members fixed to the stator assembly and to release heat of the stator assembly.

Abstract: An aspect of the disclosure relates to a semiconductor device including a semiconductor element, a connection terminal configured to output a signal based on an output of the semiconductor element, a protection circuit connected to the connection terminal, and a voltage limiting element connected to the connection terminal, wherein the protection circuit is connected to a first power supply line having a first potential and a second power supply line having a second potential lower than the first potential, and wherein a potential supplied to the voltage limiting element is higher than the second potential and lower than the first potential.

Abstract: In a photoelectric conversion device, groups of unit pixels are arranged in a well, where each of the unit pixels includes photoelectric conversion elements, an amplifier transistor, and transfer transistors. The photoelectric conversion device includes a line used to supply a voltage to the well, a well-contact part used to connect the well-voltage-supply line to the well, and transfer-control lines used to control the transfer transistors. The transfer-control lines are symmetrically arranged with respect to the well-voltage-supply line in respective regions of the unit-pixel groups.

Abstract: An electric motor includes a rotor and a stator. The rotor includes a rotor core and a plurality of permanent magnets fixed to an outer surface of the rotor core. The stator includes a stator core including a tooth part and a winding wound around the stator core. The electric motor satisfies an expression of 1<t2/t1?8 where t1 is a minimum distance from a center of a front end surface of the tooth part to one permanent magnet of the plurality of permanent magnets and t2 is a distance from an end of the tooth part to the one permanent magnet.

Abstract: A photoelectric conversion device, comprising a semiconductor substrate on which a plurality of pixels are arrayed, and an insulating member which is transparent and configured to cover the semiconductor substrate, wherein the insulating member includes at least three portions whose thickness are different from each other so as to increase types of wavelengths of light that are to be ripple reduction targets.