摘要:
It is an object to provide a cooling device with an increased leeward cooling capacity without increasing the number of heat radiation fins to be installed and the amount of cooling air.The cooling device comprises a heat-receiving block thermally connected to a heat-generating element and heat radiation fin groups having a plurality of fins thermally connected to the heat-receiving block. A flow of cooling air is set in the direction parallel to the heat-receiving block. The plurality of heat radiation fin groups are arranged in tandem along the flow direction of the cooling air. Of the plurality of the heat radiation fin groups, the fin pitch of the heat radiation fin group arranged on the windward side of the cooling air is larger than the fin pitch of the heat radiation fin group arranged on the leeward side of the cooling air.
摘要:
An ultrasonic testing apparatus 100 comprises an ultrasonic probe 1 including n (n≧2) number of transducers arranged along a predetermined direction, disposed so as to face a test object P, and a transmission/reception control device 2 for selecting m (n>m≧1) number of transducers from among the n number of transducers, transmitting ultrasonic waves from the selected m number of transducers toward the test object, receiving the ultrasonic waves therefrom, and switched m number of transducers to b selected successively. If an angle that the arrangement direction of the transducers makes with the surface of the test object which ultrasonic waves enter is θ, and the effective beam width of each selected m number of transducers with respect to a target flaw is W1, the transmission/reception control device switches m number of transducers to be selected successively by a switching pitch length P satisfying the formula: P≦W1·cos θ.
摘要:
An ultrasonic testing equipment includes a linear array ultrasonic probe in which a plurality of transducers are arranged in a direction orthogonal to the rolling direction of a test object and a signal processing unit. The signal processing unit executes following (1) to (6). (1) Generating an aperture synthetic image of testing signals of each section of the test object. (2) Generating a maximum value distribution of testing signals in the arrangement direction of transducers. (3) Calculating the width of a defect in each section based on the maximum value distribution. (4) Generating a maximum value distribution of the testing signals in the rolling direction based on the maximum value distribution of a plurality of sections of the test object. (5) Calculating the length of the defect based on the maximum value distribution of the testing signals in the rolling direction. (6) Calculating the area of the defect based on the calculated defect length and the calculated defect width of each section.
摘要:
An image forming apparatus is provided with a cooling fan for cooling toner boxes within the apparatus. The outlet of the cooling fan and the toner boxes are connected by flexible tubes, respectively. This makes it possible to connect the cooling fan with the toner boxes even if there is not sufficient space, thereby enabling cooling of the toner boxes.
摘要:
A tracking device is provided with a non-contact type displacement gauge, a positioner which moves a flaw detecting sensor within a plane perpendicular to an axial direction of a pipe or tube, and a positioning controller which controls the positioner. The positioning controller predicts a time until a portion of the pipe or tube whose displacement is measured by the displacement gauge reaches a predetermined position on a straight line extending in a Z-axis direction through a rotational center of the pipe or tube on the basis of the positional relationship between the displacement gauge and the flaw detecting sensor and a rotational speed of the pipe or tube; controls the positioner on the basis of the displacement measured by the displacement gauge and an operational delay time of the positioner in such a manner that the relative position of the flaw detecting sensor to the pipe or tube after the lapse of the predicted time becomes substantially constant in the Z-axis direction; and moves the flaw detecting sensor along the Z-axis direction. The positioning controller performs the same control in an X-axis direction.
摘要:
A focusing apparatus includes a first sensor and a second sensor configured to receive an optical image of a target workpiece to be inspected and convert it photoelectrically, a first optical system configured to make the optical image be focused on the first sensor, a second optical system configured to branch the optical image from the first optical system and to make a branched optical image be focused on the second sensor, a focus detection part configured to input a first image signal photoelectrically converted by the first sensor and a second image signal photoelectrically converted by the second sensor and to detect a focus position of the optical image by using high frequency components of the first image signal and the second image signal, and a focus control part configured to control a focus of the first optical system based on the focus position detected by the focus detection part.
摘要:
An image forming apparatus is provided with a recording device for printing a recording medium, a conveyance unit arranged below the recording device to face the recording device and adapted to convey the recording medium, and an elevator for moving the conveyance unit upward and downward. The elevator includes an eccentric cam having an eccentrically located rotation axis line. The conveyance unit has a contact surface to be held in contact with the circumferential surface of the eccentric cam and is moved upward and downward by the rotation of the eccentric cam.
摘要:
A toner cartridge (20) has a shutter (40) adapted to be changed between a closed posture (S1) and an open posture (S1) for opening a toner supply port (322), a lever (50) to be operated manually to change the posture of the shutter (40), and a postural-change restriction mechanism (60) for controlling a postural change of the shutter (40). The postural-change restriction mechanism (60) includes a lock groove (53) in the lever (50), and a restriction pawl (62) integrally formed with a cartridge body (30). The restriction pawl (62) engages the lock groove (53) when the lever (50) is operated to set the shutter (40) in the closed posture (S1), to block a postural change of the shutter (40), and to be elastically deformed when the cartridge body (30) is attached to a development device, in a manner to allow the postural change.
摘要:
A focusing device comprises a first imaging optical system, a second imaging optical system which splits the optical image in the direction of an AF sensor and further splits the optical image so that a front focus image in which the point that is in focus is in front of the optical image on the inspecting sensor and a back focus image in which the point that is in focus is behind the optical image on the inspecting sensor are formed on the AF sensor, a focus detecting circuit which detects an optimum focus position on the basis of a high-frequency component of a front sensor image in a front focus position and a high-frequency component of a back sensor image in a back focus position, and a focus control circuit which controls the focusing of the first imaging optical system on the basis of the focus position.
摘要:
In a liquid discharge head having a head body provided with an orifice plate having a plurality of discharge ports for discharging liquid droplets therefrom, a plurality of flow paths communicating with respective ones of the plurality of discharge ports, a liquid chamber for supplying liquid to the plurality of flow paths, and a plurality of energy generating elements disposed correspondingly to the plurality of flow paths and generating energy for discharging the liquid droplets, the orifice plate being joined to the joined surface of the head body in which the communication ports of the flow paths communicating with the discharge ports of the orifice plate are disposed, the orifice plate comprises a first member providing the core of the orifice plate and formed with apertures layer than the discharge ports at locations whereat the discharge ports are formed, and a second member covering the both surfaces of the first member and the inner surfaces of the apertures.