Abstract: A thermal fluid analysis method includes: calculating volumes of air blown out of blowout holes using a physical model; setting at least one virtual blowout hole corresponding to a mesh of a two-dimensional model of a space to be cooled; allotting one or more of the blowout holes to each of the at least one virtual blowout hole; calculating an equivalent volume of air blown out of the at least one virtual blowout hole based on the volumes of the air blown out of the one or more blowout holes; and setting, as an analysis parameter of the two-dimensional model, a physical amount related to the equivalent volume.

Abstract: An ink jet head includes an actuator and a structure body. The actuator includes a thin film portion, a pressure chamber layer, and a filter. The thin film portion is deformed by application of a voltage to apply a pressure to an ink. The pressure chamber layer is formed on a surface of the pressure chamber and has a recessed portion. The filter is integrally formed with the pressure chamber layer so as to be disposed in the recessed portion, the filter having an aperture smaller than a diameter of a nozzle. The actuator is stacked on an upper surface of the structure body and joined to the upper surface thereof. A pressure chamber is formed by the recessed portion and the upper surface of the structure body, and the filter is disposed in the pressure chamber.

Abstract: An ink jet head includes a pressure chamber, a main flow path, an actuator, a nozzle, a first communication flow path, and a filter. The pressure chamber is filled with an ink. The main flow path supplies the ink to the pressure chamber. The actuator changes the pressure of the ink filled in the pressure chamber. The nozzle is connected to the pressure chamber and ejects the ink filled in the pressure chamber by driving of the actuator. The first communication flow path connects the pressure chamber to the main flow path. The filter is disposed at a predetermined position between the nozzle and the vicinity of a first boundary of the main flow path and the first communication flow path, and the filter captures an impurity in the ink which has a size larger than the diameter of the nozzle.

Abstract: A plate body 2, multiple hologram layers 3 are provided in the thickness direction of the plate body 2, and at least one of the multiple hologram layers 3 is formed of spirally continuous hologram bands 4. Erasure areas 4A and 4B and non-erasure areas 4C and 4D of the hologram band 4 are provided in the length direction of the hologram band 4. Non-erasure areas 4E and 4F of the hologram band 4 are formed on both sides in the direction orthogonal to the length direction of the hologram band 4 in the erasure areas 4A and 4B.

Abstract: The recording and reproducing apparatus has rotary drive unit (a motor) that rotationally drives a multilayer recordable recording medium 1; a reference-light-side recording and reproducing lens 6 and a recording-light-side recording and reproducing lens 7 that are disposed oppositely to the recording medium 1 which is rotationally driven by the rotary drive unit, an address detection lens 5 that is disposed opposite the recording medium 1 and that is provided separately from the recording and reproducing lenses 6 and 7; a light source 9 for recording and reproducing purpose that supplies recording reproduction light to the recording and reproducing lenses 6 and 7; and the address light source 9 that supplies address light to the address detection lens 5. The apparatus is configured in such a way that light whose center axis portion is optically hollow is supplied from the reference-light-side recording and reproducing lens 6 to the recording medium 1 during reproducing operation.

Abstract: Then, in order to achieve the above-described object, in the optical disk of the present invention, while micro-hologram layers 7 and 8 made of plural layers are provided in an inner portion of a plate body 2 along a thickness direction of the plate body 2, dimensions of micro-holograms 4 along the thickness direction of the plate body 2, which configure the micro-hologram layer 7 formed on the side of one surface of the plate body 2 within the micro-hologram layers 7 and 8 constructed of the plural layers, are made smaller than dimensions of micro-holograms 3 along the thickness direction of the plate body 2, which configure a micro-hologram layer 8 formed on the side of an inner layer of the plate body 2.

Abstract: A recording apparatus includes a first light source irradiating first laser light, a second light source irradiating second laser light, an optical spatial modulating unit applying information to the first laser light, and an objective lens collecting the first laser light and the second laser light at different positions on the same optical axis. A hologram recording operation uses a first optical path and a second optical path. The information light is conducted to the objective lens along the first optical path. The reference light is conducted to the objective lens along the second optical path. At the same time, an address/servo control operation is carried out by employing a third optical path along which the second laser light is conducted to the objective lens. The DVD recording operation uses the second optical path. The CD recording operation uses the third optical path.

Abstract: An electronic device that performs at least reading or regeneration of data in or from a hologram disc is characterized by including an objective lens 11 disposed opposite a hologram disc (MH) 1; a laser light source 5 that emits a beam toward the objective lens 11; and a light receiving element 17 that receives a beam reflected from the hologram disc (MH) 1 by way of the objective lens 11, wherein a corner cube array 8 that reflects a portion of a beam traveling from the laser light source 5 toward the objective lens 11 is interposed between the laser light source 5 and the objective lens 11.

Abstract: A holographic recording apparatus causes reference light and information light to interfere with each other, and records the interference pattern in a recording medium. The holographic recording apparatus has an objective lens and a focus position controller. The objective lens focuses both the reference light and the information light at a focus position of the recording medium. The focus position controller changes the focus position into a predetermined position on the light path of the reference light.

Abstract: A piezoelectric element includes a pressure chamber member that has an opening communicating with a nozzle, a vibrating plate that is disposed on the pressure chamber member so as to cover the opening, a lower electrode that is disposed on the vibrating plate, a piezoelectric body that is disposed on the lower electrode, an upper electrode that is disposed on the piezoelectric body and in a region opposed to the opening, and a lead electrode that is disposed on the piezoelectric body, that extends from the upper electrode, and that has a width smaller than that of the upper electrode. The piezoelectric body includes a groove portion that is disposed in a predetermined region along an edge portion of the opening and an inactive region (piezoelectric inactive region) that is a region other than the groove portion, that is disposed along the edge portion of the opening, and that does not substantially serve as a piezoelectric element. The lead electrode is disposed in the piezoelectric inactive region.

Abstract: A plate body 2, multiple hologram layers 3 are provided in the thickness direction of the plate body 2, and at least one of the multiple hologram layers 3 is formed of spirally continuous hologram bands 4. Erasure areas 4A and 4B and non-erasure areas 4C and 4D of the hologram band 4 are provided in the length direction of the hologram band 4. Non-erasure areas 4E and 4F of the hologram band 4 are formed on both sides in the direction orthogonal to the length direction of the hologram band 4 in the erasure areas 4A and 4B.

Abstract: To accomplish the object, the invention provides a record medium including a plate body 2; multiple hologram layers 3 formed in the thickness direction of the plate body 2; and hologram bands 4 formed in at least one of the multiple hologram layers 3. The hologram band 4 is formed with erasure areas 4A and 4B of the hologram band 4 with no hologram band 4 in the direction orthogonal to the length direction of the hologram band 4.

Abstract: Then, in order to achieve the above-described object, in the optical disk of the present invention, while micro-hologram layers 7 and 8 made of plural layers are provided in an inner portion of a plate body 2 along a thickness direction of the plate body 2, dimensions of micro-holograms 4 along the thickness direction of the plate body 2, which configure the micro-hologram layer 7 formed on the side of one surface of the plate body 2 within the micro-hologram layers 7 and 8 constructed of the plural layers, are made smaller than dimensions of micro-holograms 3 along the thickness direction of the plate body 2, which configure a micro-hologram layer 8 formed on the side of an inner layer of the plate body 2.

Abstract: The recording and reproducing apparatus has rotary drive unit (a motor) that rotationally drives a multilayer recordable recording medium 1; a reference-light-side recording and reproducing lens 6 and a recording-light-side recording and reproducing lens 7 that are disposed oppositely to the recording medium 1 which is rotationally driven by the rotary drive unit, an address detection lens 5 that is disposed opposite the recording medium 1 and that is provided separately from the recording and reproducing lenses 6 and 7; a light source 9 for recording and reproducing purpose that supplies recording reproduction light to the recording and reproducing lenses 6 and 7; and the address light source 9 that supplies address light to the address detection lens 5. The apparatus is configured in such a way that light whose center axis portion is optically hollow is supplied from the reference-light-side recording and reproducing lens 6 to the recording medium 1 during reproducing operation.

Abstract: A recording apparatus includes a first light source irradiating first laser light, a second light source irradiating second laser light, an optical spatial modulating unit applying information to the first laser light, and an objective lens collecting the first laser light and the second laser light at different positions on the same optical axis. A hologram recording operation uses a first optical path and a second optical path. The information light is conducted to the objective lens along the first optical path. The reference light is conducted to the objective lens along the second optical path. At the same time, an address/servo control operation is carried out by employing a third optical path along which the second laser light is conducted to the objective lens. The DVD recording operation uses the second optical path. The CD recording operation uses the third optical path.

Abstract: A holographic recording apparatus causes reference light and information light to interfere with each other, and records the interference pattern in a recording medium. The holographic recording apparatus has an objective lens and a focus position controller. The objective lens focuses both the reference light and the information light at a focus position of the recording medium. The focus position controller changes the focus position into a predetermined position on the light path of the reference light.

Abstract: A piezoelectric element includes a pressure chamber member that has an opening 1 communicating with a nozzle, a vibrating plate that is disposed on the pressure chamber member so as to cover the opening 1, a lower electrode that is disposed on the vibrating plate, a piezoelectric body 5 that is disposed on the lower electrode, an upper electrode 6 that is disposed on the piezoelectric body 5 and in a region opposed to the opening 1, and a lead electrode 7 that is disposed on the piezoelectric body 5, that extends from the upper electrode 6, and that has a width smaller than that of the upper electrode 6. The piezoelectric body 5 includes a groove portion 12 that is disposed in a predetermined region along an edge portion 2a of the opening and an inactive region (piezoelectric inactive region 11) that is a region other than the groove portion 12, that is disposed along the edge portion 2a of the opening, and that does not substantially serve as a piezoelectric element.

Abstract: There are provided a recording head for ejecting a liquid droplet from a nozzle based on an ejecting signal to form a pattern on a recording medium, a humidity detecting portion for detecting an absolute humidity in the vicinity of the nozzle, a humidifier for humidifying the vicinity of the nozzle, and a humidifying portion driving control portion (control board) for controlling the humidifier based on the absolute humidity detected by the humidity detecting portion.

Abstract: An inkjet recording apparatus includes an absorber configured to abut a nozzle surface of a line head to absorb ink adhered on the nozzle surface. A portion of the absorber which corresponds to an opening of a nozzle is removed. The absorber is configured to abut the nozzle surface except for a portion near the nozzle. Ink remaining on the nozzle surface is absorbed by the absorber. Thus, when the nozzle surface is wiped with a blade, accumulation of a large amount of remaining ink is prevented.

Abstract: A printer includes: a recording section for recording information on a recording medium; a medium carrying mechanism provided in an apparatus casing having an eject port that is opened in an upward direction or in a slanted upward direction; a medium accommodating section extending in a vertical or slanted vertical direction that defines a medium accommodating space that is continuous with the eject port; and an upward medium carrying mechanism that carries the recording medium upward by an amount according to the size of the recording medium stored in a size memory device, so that the re cording medium projects from the eject port by a predetermined constant length.