Abstract: A semiconductor light-emitting element formed of a semiconductor layer includes a multilayer reflecting mirror, a light-emitting layer, a resonator, and a phase shift layer. The multilayer reflecting mirror is formed on a substrate. The light-emitting layer is formed on the multilayer reflecting mirror. The resonator uses the multilayer reflecting mirror as a lower reflecting mirror and resonates light emitted from the light-emitting layer. The phase shift layer shifts a phase of a resonance spectrum of the resonator to generate a standing wave having plural principal modes.

Abstract: A semiconductor light-emitting element formed of a semiconductor layer includes a multilayer reflecting mirror, a light-emitting layer, a resonator, and a phase shift layer. The multilayer reflecting mirror is formed on a substrate. The light-emitting layer is formed on the multilayer reflecting mirror. The resonator uses the multilayer reflecting mirror as a lower reflecting mirror and resonates light emitted from the light-emitting layer. The phase shift layer shifts a phase of a resonance spectrum of the resonator to generate a standing wave having plural principal modes.

Abstract: A semiconductor light-emitting element includes a semiconductor layer including a light-emitting layer, and an upper reflective surface and a lower reflective surface between which the semiconductor layer is interposed. A distance L between the upper reflective surface and the lower reflective surface satisfies 0.20?+0.5a??L?0.30?+0.5a?, where ? denotes a peak wavelength of light emitted from the light-emitting layer within the semiconductor layer, and a denotes an arbitrary positive integer.

Abstract: A semiconductor light-emitting element includes a semiconductor layer including a light-emitting layer, and an upper reflective surface and a lower reflective surface between which the semiconductor layer is interposed. A distance L between the upper reflective surface and the lower reflective surface satisfies 0.20?+0.5a??L?0.30?+0.5a?, where ? denotes a peak wavelength of light emitted from the light-emitting layer within the semiconductor layer, and a denotes an arbitrary positive integer.

Abstract: A light-emitting thyristor includes a substrate, a first semiconductor multi-layered mirror of a first conductivity type that is formed on the substrate, a gate layer that is formed on the first semiconductor multi-layered mirror by stacking a plurality of semiconductor light-emitting layers having different peak values of an emission wavelength, and a second semiconductor multi-layered mirror of a second conductivity type that is formed on the gate layer.

Abstract: According to an aspect of the invention, an optical functional element includes a substrate, a semiconductor element portion, and a light emitting element portion. The semiconductor element portion includes a first part of a semiconductor multi layer structure formed on the substrate. The light emitting element portion includes a second part of the semiconductor multi layer structure and light emitting element structure formed on the second part of the semiconductor multi layer structure.

Abstract: A light-emitting thyristor includes a substrate, a first semiconductor multi-layered mirror of a first conductivity type that is formed on the substrate, a gate layer that is formed on the first semiconductor multi-layered mirror by stacking a plurality of semiconductor light-emitting layers having different peak values of an emission wavelength, and a second semiconductor multi-layered mirror of a second conductivity type that is formed on the gate layer.

Abstract: A liquid droplet ejection head includes: a nozzle plate that has a plurality of nozzles ejecting a liquid droplet; a flow path member that includes: pressure generating chambers that communicate with the nozzles; and liquid supply paths through which liquid is supplied to the pressure generating chambers; and a damper portion that is disposed in at least one part of a region, the region being on the nozzle plate, corresponding to the liquid supply paths, the damper portion reducing a fluctuation of an ejection amount of the liquid droplets to enable stable ejection.

Abstract: According to an aspect of the invention, an optical functional element includes a substrate, a semiconductor element portion, and a light emitting element portion. The semiconductor element portion includes a first part of a semiconductor multi layer structure formed on the substrate. The light emitting element portion includes a second part of the semiconductor multi layer structure and light emitting element structure formed on the second part of the semiconductor multi layer structure.

Abstract: A liquid droplet ejection head includes: a nozzle plate that has a plurality of nozzles ejecting a liquid droplet; a flow path member that includes: pressure generating chambers that communicate with the nozzles; and liquid supply paths through which liquid is supplied to the pressure generating chambers; and a damper portion that is disposed in at least one part of a region, the region being on the nozzle plate, corresponding to the liquid supply paths, the damper portion reducing a fluctuation of an ejection amount of the liquid droplets to enable stable ejection.

Abstract: A liquid droplet ejection head includes: a nozzle plate that has a plurality of nozzles ejecting a liquid droplet; a flow path member that includes: pressure generating chambers that communicate with the nozzles; and liquid supply paths through which liquid is supplied to the pressure generating chambers; and a damper portion that is disposed in at least one part of a region, the region being on the nozzle plate, corresponding to the liquid supply paths, the damper portion reducing a fluctuation of an ejection amount of the liquid droplets to enable stable ejection.

Abstract: A liquid droplet ejection head includes: a nozzle plate that has a plurality of nozzles ejecting a liquid droplet; a flow path member that includes pressure generating chambers that communicate with the nozzles; and liquid supply paths through which liquid is supplied to the pressure generating chambers; and a damper portion that is disposed in at least one part of a region, the region being on the nozzle plate, corresponding to the liquid supply paths, the damper portion reducing a fluctuation of an ejection amount of the liquid droplets to enable stable ejection.

Abstract: A droplet ejection head includes a nozzle plate that has nozzles and includes a polymer material. The polymer material forming the nozzle plate includes a lubricant having an average particle size of not smaller than 0.01 ?m and not larger than 8% of a hole diameter of each of the nozzles.

Abstract: A card printer in a card information management system. The card printer has a data input part for inputting data acquired by a user. The data is character information of a character generated by a program stored in a predetermined apparatus according to predetermined operations of a user. The card printer has a user ID input part for inputting an ID of the user. The data inputted from the data input part is converted into print information by a print information generation part. Approval information of the supplier of the card is generated by an approval information generation part. This print information and the approval information are printed on a card by a print part through an image processing part and a print control part. The user can obtain the card to which the approval information is added on demand.

Abstract: In order to that stress generated within a resin can be suppressed and cracking in the resin can be prevented, an ink jet recording head comprising a substrate; a resin body, which defines an ink discharge section, formed on the substrate; and a heating resistor provided on the substrate, an ink chamber being formed between the heating resistor and the ink discharge section, the resin body being dug down along the ink chamber, is provided.

Abstract: A manufacturing method for a droplet ejecting nozzle plate comprising: providing a nozzle plate layered body which includes a metal film positioned on a sheet material, a water-repellant layer positioned on the metal film; forming a nozzle hole at a present position in the nozzle plate layered body by laser processing.

Abstract: In order to that stress generated within a resin can be suppressed and cracking in the resin can be prevented, an ink jet recording head comprising a substrate; a resin body, which defines an ink discharge section, formed on the substrate; and a heating resistor provided on the substrate, an ink chamber being formed between the heating resistor and the ink discharge section, the resin body being dug down along the ink chamber, is provided.

Abstract: In order to that stress generated within a resin can be suppressed and cracking in the resin can be prevented, an ink jet recording head comprising a substrate; a resin body, which defines an ink discharge section, formed on the substrate; and a heating resistor provided on the substrate, an ink chamber being formed between the heating resistor and the ink discharge section, the resin body being dug down along the ink chamber, is provided.

Abstract: In order to that there is no region in which an ink pools, a particle made from the ink is hardly generated, and high reliability is archived, an ink jet recording head comprising a substrate; a resin body, which defines an ink discharge section, formed on the substrate; and a heating resistor provided on the substrate, an ink chamber being formed between the heating resistor and the ink discharge section, resin parts being positioned in the resin body along the ink chamber, a material of the resin part being the same as that of the resin body, is provided.

Abstract: An image forming apparatus can form an image of a high-precision security information for anti-reproduction. A photosensitive material-coated area in a recording paper is exposed with an exposure unit to form an image of a high-precision security information. Since the image of the security information is thus formed by exposing the photosensitive material, it can be formed as an image incapable of reproduction.