Abstract: A sensor includes a sensor element; a circuit board having an element attachment surface on which the sensor element is mounted; a casing member for housing the circuit board, the casing member having a measurement chamber which faces the sensor element and communicates with the target atmosphere through a gas inlet; an annular elastic seal member which is interposed between the element attachment surface and the casing member in such a manner that the elastic seal member is in contact with the element attachment surface. The elastic seal member is made of foamed rubber and has an end surface flat portion which faces the casing member and another end surface flat portion which faces the element attachment. The elastic seal member is interposed between the element attachment surface and the casing member such that the elastic seal member is compressed between the flat portions of the end surfaces.

Abstract: A scanning optical apparatus includes a light beam detection unit, a reference signal generation unit, and a returned light detection unit. The light beam detection unit decides whether the light beam reflected by the reflecting surface of a polygon mirror has entered the BD sensor, through comparison between an output value of the BD sensor and a predetermined first threshold. The reference signal generation unit generates a scan start reference signal in response to the decision that the light beam has entered the BD sensor. The returned light detection unit decides whether the light beam reflected by the reflecting surface has entered the internal light sensor, through comparison between an output value of the internal light sensor and a second threshold corresponding to light beam intensity higher than the intensity of the light beam reflected by the reflecting surface and corresponding to the first threshold.

Abstract: An optical scanning device includes first and second light sources, a polygon mirror, first and second scanning lenses, first and second reflecting mirrors, and an adjusting mechanism for adjusting the posture of the first reflecting mirror. The adjusting mechanism adjusts the posture of the first reflecting mirror using a predetermined first adjustment amount so that a first scanning line drawn by a first light beam to scan a first circumferential surface and a second scanning line drawn by a second light beam to scan a second circumferential surface are parallel when a drum rotation speed is a predetermined first speed, and adjusts the posture of the first reflecting mirror using a predetermined second adjustment amount different from the first adjustment amount and capable of making the first and second scanning lines parallel at a second speed different from the first speed when the drum rotation speed is the second speed.

Abstract: A process for manufacturing reduced iron agglomerates which comprises introducing starting agglomerates that comprise both an iron oxide-containing material and a carbonaceous reducing agent onto the hearth of a moving-bed heating furnace, and heating the agglomerates to reduce the iron oxide contained in the agglomerates, wherein the iron oxide-containing material contained in the starting agglomerates has a mean particle diameter of 4 to 23 ?m and contains at least 18% of particles having diameters of 10 ?m or less. By the use of such starting agglomerates, the process attains: an improvement in the yield of reduced iron agglomerates having large particle diameters; a reduction in the manufacturing time, said reduction leading to an enhancement in the productivity; and a remarkable reduction in the content of impurities such as sulfur in the reduced-iron agglomerates.

Abstract: An optical scanning device has a light deflector deflecting a light beam from a light source, a synchronization detection sensor determining timing of starting scanning in main scanning direction based on timing of detecting the light beam scanned in main scanning direction by the light deflector, and a pre-sensor imaging optical system imaging the light beam reflected from the light deflector on the synchronization detection sensor. The pre-sensor imaging optical system moves the imaging position of the light beam on the synchronization detection sensor in a direction making the timing of detecting the light beam earlier or later according to whether variation in temperature causes the magnification of the scanning optical system in main scanning direction to increase or decrease respectively.

Abstract: An optical scanning device has a light deflector deflecting a light beam from a light source, a synchronization detection sensor determining timing of starting scanning in main scanning direction based on timing of detecting the light beam scanned in main scanning direction by the light deflector, and a pre-sensor imaging optical system imaging the light beam reflected from the light deflector on the synchronization detection sensor. The pre-sensor imaging optical system moves the imaging position of the light beam on the synchronization detection sensor in a direction making the timing of detecting the light beam earlier or later according to whether variation in temperature causes the magnification of the scanning optical system in main scanning direction to increase or decrease respectively.

Abstract: The calculation unit calculates the time interval between the time at detecting the light beam reflected by the reflective surface of the rotatory polyhedron incident on the BD sensor by the light beam detecting unit and the time at detecting the light beam reflected by the reflective surface incident on the optical sensor in the light source by the return light beam detecting unit. The scan adjusting unit adjusts the luminescence time of the light source for scanning the light beam on the surface to be scanned based on the time interval calculated by the calculation unit.

Abstract: The calculation unit calculates the time interval between the time at detecting the light beam reflected by the reflective surface of the rotatory polyhedron incident on the BD sensor by the light beam detecting unit and the time at detecting the light beam reflected by the reflective surface incident on the optical sensor in the light source by the return light beam detecting unit. The scan adjusting unit adjusts the luminescence time of the light source for scanning the light beam on the surface to be scanned based on the time interval calculated by the calculation unit.

Abstract: A scanning optical apparatus includes a light beam detection unit, a reference signal generation unit, and a returned light detection unit. The light beam detection unit decides whether the light beam reflected by the reflecting surface of a polygon mirror has entered the BD sensor, through comparison between an output value of the BD sensor and a predetermined first threshold. The reference signal generation unit generates a scan start reference signal in response to the decision that the light beam has entered the BD sensor. The returned light detection unit decides whether the light beam reflected by the reflecting surface has entered the internal light sensor, through comparison between an output value of the internal light sensor and a second threshold corresponding to light beam intensity higher than the intensity of the light beam reflected by the reflecting surface and corresponding to the first threshold.

Abstract: An optical scanning device includes a light source, a deflector, an incident optical system and one scanning lens. The scanning lens includes a first face and a second face. In a main scanning direction cross section of the scanning lens, when a scanning range is separated, with on axis as a reference, into an image height region of a first direction and an image height region of a second direction that is opposite to the first direction, the incident optical system is disposed on a side of the image height region of the first direction. Curvature of the first face in a sub scanning direction cross section decreases from on axis toward off axis in the main scanning direction, and curvature of the second face in the sub scanning direction cross section increases from off axis of the first direction toward the second direction in the main scanning direction.

Abstract: An optical scanning device includes a light source that emits a laser beam, a deflector that deflects the emitted laser beam, a scanning lens that causes the deflected laser beam to scan a surface of a photosensitive body at a uniform velocity, a reflector having a reflective surface that reflects the deflected laser beam toward the photosensitive body among the laser beams that have passed through the scanning lens, and a synchronization sensor that receives the laser beam from the reflector and outputs a detection signal. The reflector is set so that a scanning speed in a main scanning direction of the laser beam on a light-receiving surface of the synchronization sensor becomes greater than a value obtained by dividing a scanning distance of the laser beam in the main scanning direction on the light-receiving surface of the synchronization sensor by a response delay time of the synchronization sensor.

Abstract: A projector (1) which projects a guide image (Pg). A first region above the center of the guide image (Pg) shows a perspective view (D) representing the projector (1) and a supporting device (2) supporting the projector (1). A second region on the upper right of the guide image (Pg), shows six illustrations (G1-G6) affixed with numbers 1 to 6. The six illustrations (G1-G6) respectively correspond to six adjustment items related to a supporting state of the projector (1). The six illustrations (G1-G6) indicate how a projected image changes when the adjustment items are adjusted. The perspective view (D) is an explanatory diagram for clearly showing the positions of adjustment operation units that adjust the six adjustment items of the supporting device (2). In the perspective view (D), the numbers 1 to 6 are affixed near the respective adjustment operation units in balloons.

Abstract: An optical scanning device includes a light source which emits a light beam, a deflector, an incident optical system and one scanning lens. The deflector reflects and deflects/scans the light beam emitted from the light source. The scanning lens includes a first face facing the deflector and a second face on an opposite side to the first face, and performs imaging of the deflected/scanned light beam on a surface to be scanned. In a main scanning cross section, when an angle relative to an optical axis of an incident light beam which enters the scanning lens from the first face is ?in, and an angle relative to an optical axis of an outgoing light beam which is output from the second face toward the surface to be scanned is ?out, in an entire scanning region, a condition of 0.9<?in/?out<1.3 is satisfied.

Abstract: An optical scanning device includes a light source for emitting a laser beam; a deflection body for deflecting the laser beam; a scanning lens for scanning the deflected laser beam on the surface of a photosensitive body; a reflection body having a reflection surface for reflecting the deflected laser beam towards the photosensitive body and having passed through the scanning lens; and a synchronizing sensor for receiving the reflected laser beam to send out a detection signal. The reflection surface has a curved arc surface depressed from both edges toward a center in a main-scanning direction equivalent to a scanning direction of the laser beam. The reflection body has a center of the reflection surface in the main-scanning direction displaced by a predetermined range in the direction of travel of the laser beam along the main-scanning direction from a center of the reflection body in the main-scanning direction.

Abstract: A gas sensor comprises a gas sensing element, a storage medium to store individual information prepared individually for the sensing element for use in control of the sensing element, and a circuit board supporting the storage medium mounted on the circuit board. A seal portion of a resin covers the circuit board liquid-tightly. An output base includes a mount surface facing to the circuit board. A terminal portion extending through the mount surface is connected with the circuit board and arranged to deliver the individual information through the circuit board. The output base further includes a support projection projecting from the mount surface and including a support surface supporting the circuit board.

Abstract: A circuit section of a NOx sensor has an output base including a pedestal portion which projects from a middle part of a support surface of a base portion. A circuit board on which a storage medium storing individual information of the NOx sensor is mounted is arranged on a mount surface of the pedestal portion. The circuit section has a seal portion which is arranged above the support surface of the base portion, and which covers the circuit board from upper and lateral sides, thereby watertightly sealing the circuit board. The seal portion has an enclose portion which, in a state where the enclose portion protrudes from a peripheral edge of the support surface to a second circumferential side surface of the base portion, encloses the base portion along the peripheral edge.

Abstract: A sensor apparatus (10) including a sensor (20), a cable (80), a circuit board (50) and a housing (30) accommodating the circuit board. The housing (30) includes a first member (100) and a second member (200). The first member (100) supports the circuit board (50) in such a condition that the circuit board (50) is electrically connected to an external terminal (40). The second member (200) receives the cable (80) inserted thereinto and is engaged with the first member (100), thereby accommodating the circuit board (50) in cooperation with the first member (100). As a result of engagement between the first member (100) and the second member (200), the housing (30) establishes an electric connection of the circuit board (50) to the cable (80).

Abstract: The data conversion unit of an image forming apparatus converts input image data into dot image data in which pixel values having gradation information are arranged in a matrix. A storage unit stores optical face tangle error information of each reflecting surface of a rotary polyhedron. An assignment unit assigns a number to each of the plurality of reflecting surfaces, specifies by which of the plurality of reflecting surfaces light emitted for each line of the dot image data is to be reflected and assigns the number of the reflecting surface to each line of the dot image data. A determination unit determines a light emission mode corresponding to the dot image data based on the optical face tangle error information and the number of the reflecting surface. An exposure control unit causes the light source to emit light in accordance with the determined emission mode.

Abstract: A case comprised of a metal-resin composite body having a connector including a terminal fitting, the connector being integrated with an opening of a wall of a case main body so that the connector sandwiches an edge of the wall. The connector is comprised of a base resin formed by injection molding so as to sandwich the wall. A separately-manufactured connector is welded to the base resin. Forming the base resin on the case main body provides a less complicated configuration of the case compared to a case where a connector is formed directly to the case main body.

Abstract: A circuit section of a NOx sensor has an output base including a pedestal portion which projects from a middle part of a support surface of a base portion. A circuit board on which a storage medium storing individual information of the NOx sensor is mounted is arranged on a mount surface of the pedestal portion. The circuit section has a seal portion which is arranged above the support surface of the base portion, and which covers the circuit board from upper and lateral sides, thereby watertightly sealing the circuit board. The seal portion has an enclose portion which, in a state where the enclose portion protrudes from a peripheral edge of the support surface to a second circumferential side surface of the base portion, encloses the base portion along the peripheral edge.