Abstract: A normally open hydraulic control valve includes: a linear solenoid unit; a spool driven by an output force of the linear solenoid unit to move forward; a valve body in which the spool is fitted; and a return spring for biasing the spool in a retreating direction. The valve body includes: a reaction force oil chamber for introducing hydraulic pressure, which presses the spool in a direction against a biasing force of the return spring, from the output port; and a damper oil chamber which suppresses vibration of the spool. The damper oil chamber is adjacent to the reaction force oil chamber with the third land portion of the spool therebetween. A slide gap which leaks and supplies oil from the reaction force oil chamber to the damper oil chamber is provided between the third land portion and the valve body.

Abstract: A damper device for a hydraulic control valve includes: a valve body; a damper oil chamber to which one end surface of a spool is faced; an oil reservoir chamber which is adjacent to the damper oil chamber with a partition wall therebetween; and an orifice provided in the partition wall to allow an upper portion of the damper oil chamber to communicate with the oil reservoir chamber. The damper oil chamber and the oil reservoir chamber are disposed in the valve body. The oil reservoir chamber is constructed by closing an opening of a recessed portion formed on an undersurface of the valve body with a top surface of the support member for supporting the valve body. In order to work the orifice in the partition wall by drilling from the opening of the recessed portion, an axis of the orifice is disposed to pass through the opening of the recessed portion. Thus, it is possible to eliminate need for post-treatment after working the orifice, thereby reducing the cost.

Abstract: A machine for stencil printing includes: a control panel for setting stencil making conditions and printing conditions; a stencil making section making a stencil sheet based on the stencil making conditions; a stencil winding section wrapping the perforated stencil sheet around a printing drum, the printing drum comprising a storage section; a printing section including a printing conditions adjustment section, the printing conditions adjustment section adjusting the printing section based on the printing conditions; and a control section storing the stencil making conditions of the stencil sheet and the printing conditions into the storage section at the time when the perforated stencil sheet is wrapped around the printing drum, the control section adjusting the printing condition adjustment section to print based on the stencil making conditions and the printing conditions in response to a direction of start of the printing processing.

Abstract: A machine for stencil printing includes: a control panel for setting an ink-saving printing mode; a stencil making section including a thermal print head performing an ink-saving stencil making corresponding to the ink-saving printing mode, and a thermal print head driving controller controlling the thermal print head; a printing section including a printing conditions adjustment section configured to adjust printing conditions corresponding to the ink-saving printing mode; and a control section controlling the stencil making section to perform the ink-saving stencil making corresponding to the ink-saving printing mode by the thermal print head and the thermal print head driving controller, and further controlling the printing section to control the printing conditions corresponding to the ink-saving printing mode and performs the printing processing by the printing conditions adjustment section, when the ink-saving printing mode is set up via the control panel.

Abstract: An ink-jet head includes a flow path unit in which an ink flow path is formed and plural actuator units bonded to an upper surface of the flow path unit. On the flow path unit, an adhesive is applied to an area not covered with the actuator unit. Individual electrodes are disposed on an upper surface of the actuator unit, and are electrically connected to a flexible printed circuit. The flexible printed circuit is fixed to the flow path unit by the adhesive. A recess as a stepped part is formed between the adhesive and the actuator unit and on a surface of the flow path unit at a side of the flexible printed circuit.

Abstract: An optical disk that is prevented from being warped when it is driven to rotate by a turntable includes a disk substrate formed as a metal substrate made of a magnetic substance. When the optical disk is mounted on a disk receiving face of the turntable, the metal substrate is attracted to the disk receiving face of the turntable by the magnetic force, thereby to correct any warping of the optical disk medium with a high degree of accuracy.

Abstract: A piezoelectric sheet of an ink-jet head includes dummy individual electrodes in addition to individual electrodes which corresponds to respective nozzles. The dummy individual electrodes are in an outer periphery of the individual electrodes. FPC board applies drive voltage to the individual electrodes in a drive area, and deforms the area in the piezoelectric sheet in the direction of an ink pressure chamber, while the drive voltage is not applied to the individual electrodes of the non-drive area. When the dummy individual electrodes are formed in the non-drive area, a boundary area of the drive area and the non-drive area is uniformly fired when the piezoelectric sheet is manufactured. In the drive area, since surrounding structures of the respective individual electrodes become equal to one another, ink discharge characteristic is substantially uniform in the boundary area of the drive area and the non-drive area.

Abstract: A flow path unit is provided with an individual ink flow path including a pressure chamber opposite to a sub-manifold 5a and an individual ink flow path including a pressure chamber not opposite to the sub-manifold. The sub-manifold 5ais provided with a beam connecting an upper surface and a lower surface of the sub-manifold.

Abstract: An inkjet head includes an actuator unit, and a flow path unit. Individual electrodes are formed on a piezoelectric sheet of the actuator unit. Pressure chambers are formed in a cavity plate of the flow path unit. Each individual electrode has a main electrode region disposed in a position opposite to a corresponding pressure chamber, and a land portion connected to the main electrode region. Overhang portions protruding in a direction along a surface of the cavity plate are formed in side walls of each pressure chamber. Each land portion at least partially overlaps a corresponding overhang portion at a height level (top height level) of a contact surface between the cavity plate and the actuator unit.

Abstract: An inkjet head including piezoelectric sheets each of which has an individual electrode-forming region on its front surface, and inner electrodes in its inside. Individual electrodes are arranged in the individual electrode-forming region. The inner electrodes are arranged opposite to the individual electrodes. Front surface common electrodes are provided on the front surface of the piezoelectric sheet so that the front surface common electrodes are formed as land portions disposed around the individual electrode-forming region. The front surface common electrodes are formed to extend lengthwise along outer edges of the individual electrode-forming region. One end portion of front surface common electrode in the lengthwise direction is connected to a connection terminal of a board connected to a drive circuit. The other end portion of front surface common electrode is electrically connected to a corresponding inner electrode via through-hole formed below the front surface common electrode.

Abstract: A flow path unit of an ink-jet head includes a sub-manifold 5a communicating with nozzles and pressure chambers through ink supply ports 13a. The plural ink supply ports 13a are formed in the upper surface of the sub-manifold 5a and in areas close to both side ends in the longitudinal direction of the sub-manifold 5a.

Abstract: A laminated bonding structure of thin plate members includes; a plurality of thin plate members laminated through an adhesive agent, the plurality of thin plate members including at least one thin plate member having a plurality of holes formed therein; and a hole group encircling groove that encircles a hole group constituted by at least part of the plurality of holes is formed on the thin plate member having the plurality of holes.

Abstract: An inkjet head has a plurality of pressure chambers. An end of each pressure chamber is connected to a discharging nozzle and the other end to an ink supplier. The pressure chamber has a rhombic shape having longer and shorter diagonals. The inkjet head further includes an actuator unit, which has at least one planar piezoelectric layer covering over the plurality of pressure chambers, a common electrode provided on one side surface of one of the at least one planar piezoelectric layer, and a plurality of driving electrodes provided for the pressure chambers, respectively. The plurality of driving electrodes are formed on the other side of the one of the at least one planar piezoelectric layer. Further, conditions: 0.1 mm?L and 0.29??/??1 are satisfied, where L represents the length of the shorter diagonal and ? represents a length of a driving electrode extending in parallel with the width L.

Abstract: A machine for stencil printing includes: a control panel for setting an ink-saving printing mode; a stencil making section including a thermal print head performing an ink-saving stencil making corresponding to the ink-saving printing mode, and a thermal print head driving controller controlling the thermal print head; a printing section including a printing conditions adjustment section configured to adjust printing conditions corresponding to the ink-saving printing mode; and a control section controlling the stencil making section to perform the ink-saving stencil making corresponding to the ink-saving printing mode by the thermal print head and the thermal print head driving controller, and further controlling the printing section to control the printing conditions corresponding to the ink-saving printing mode and performs the printing processing by the printing conditions adjustment section, when the ink-saving printing mode is set up via the control panel.

Abstract: There are provided an optical disc that can be made highly-reliable by suppressing the occurrence of drawback such as warp and an optical disc manufacturing method that can make it possible to manufacture a highly-reliable optical disc with excellent work efficiency.

Abstract: An anti-glare and anti-reflection film (1) which comprises, on a transparent support (2), at least one anti-glare layer (4) including particles (6), and a low refractive index layer (5) superposed in this order, in which the film has an average mirror reflectance at a 5° incidence in the wavelength region of 450 to 650 nm being 1.2% or less. A polarizing plate and an image display device using the anti-glare and anti-reflection film.

Abstract: A machine for stencil printing includes: a control panel for setting stencil making conditions and printing conditions; a stencil making section making a stencil sheet based on the stencil making conditions; a stencil winding section wrapping the perforated stencil sheet around a printing drum, the printing drum comprising a storage section; a printing section including a printing conditions adjustment section, the printing conditions adjustment section adjusting the printing section based on the printing conditions; and a control section storing the stencil making conditions of the stencil sheet and the printing conditions into the storage section at the time when the perforated stencil sheet is wrapped around the printing drum, the control section adjusting the printing condition adjustment section to print based on the stencil making conditions and the printing conditions in response to a direction of start of the printing processing.

Abstract: An inkjet head includes a cavity plate having a plurality of pressure chambers arranged in matrix, a piezoelectric sheet laminated on the cavity plate, and a power supply board. A plurality of substantially rhombus driving electrodes are formed on the piezoelectric sheet in a matrix at positions corresponding to the pressure chambers. A first contact land extends from one of the acute angle corners of each driving electrode. The driving electrodes are arranged such that the first contact land extending from one driving electrode is placed between two driving electrodes adjacent to said one driving electrode. The power supply board has a plurality of second contact lands formed at positions corresponding to the first contact lands. The second contact lands are connected with respective ones of the first contact lands for power supply.

Abstract: An inkjet head is composed of a plurality of plates stacked on each other. The plurality of plates includes a cavity plate formed with a plurality of ink pressure chambers and a plurality of manifold plates for forming a manifold chamber being in fluid communication with the ink pressure chambers to distribute ink thereamong. Each manifold plate is provided with an opening formed therethrough with a portion thereof being left in the opening. When the manifold chambers are stacked on each other, the openings of the manifold plates formed as above constitute a manifold channel taking the form of a closed loop. The portions of the manifold plates left in the openings are supported by a plurality of beams formed on the manifold plates. The beams are thinner than respective manifold plates, and are arranged so as not to overlap each other when viewed in a direction the manifold plates are stacked.

Abstract: An inkjet head employed in an inkjet printing apparatus includes a main body provided with a printing surface, which has a substantially rectangular elongated shape, and a plurality of piezoelectric modules. Each of the piezoelectric modules has a substantially trapezoidal shape, and is provided with a plurality of piezoelectric unit structures. The plurality of piezoelectric modules are arranged along a longitudinal direction of the printing surface such that upper base of the trapezoidal shape is located at a central portion in a direction perpendicular to the longitudinal direction. Further, the plurality of piezoelectric modules are oriented in opposite directions alternately in the direction perpendicular to the longitudinal direction.