Abstract: The invention provides a laser working apparatus for effecting optical ablation working by irradiating a work article with laser light from a laser oscillator capable of continuous emission of light pulses of a large energy density in space and in time, with a pulse emission time not exceeding 1 picosecond, wherein control means for controlling the irradiation of the laser light is provided in a position not affecting the temperature control of the laser oscillating portion and a configuration is provided for controlling the irradiation of the laser light continuously emitted from the laser oscillator by the control means thereby effecting optical ablation working on the work article.

Abstract: A laser processing method for performing laser ablation process on a work piece by radiating laser beam on the work piece includes the step of forming simultaneously a plurality of process shapes arranged at a predetermined interval by use of laser beam of plural pulses having extremely large spatial and temporal energy density radiated from a laser oscillator as the laser beam oscillating at the pulse radiation time of one picosecond or less. With the laser processing method thus structured, it is possible to perform a highly precise processing without creating by-product, as well as to fundamentally prevent the converted thermal energy from being accumulated on a work piece, such as resin, which causes the work piece to be fused or thermally expanded during the operation of laser processing.

Abstract: A projection type image display apparatus that displays an image at high brightness by effectively using light emitted from organic EL element without increasing the size and cost of a projection optical system, is disclosed. The projection type image display apparatus includes a projection optical system that projects the light emitted from the organic EL element onto a target object. The projection optical system has a characteristic non-telecentric toward the EL element with principal rays which passes through the median point of the aperture pupil that captures light diffusively emitted from the EL element converging when seen from the EL element at a pixel position where the object height on the EL element from the optical axis of the projection optical system reaches a maximum.

Abstract: A projection type image display apparatus that suppresses power input to a layered type electroluminescence element, maintains high luminance efficiency and allows image projection at high brightness. The projection type image display apparatus includes an electroluminescence element provided with three layered luminescent layers that emit three primary colors respectively. Each luminescent layer includes emission pixels which are arranged in a two-dimensional matrix and emits an image modulation pattern light including an intensity distribution of respective colors according to an input signal based on image information. The projection optical system has axial chromatic aberration in such a way that the positions of the plane of each luminescent layer and the plane of an object have an optically conjugate relationship with respect to an emission intensity median point wavelength of the waveband of each color.

Abstract: A projection type image display apparatus which suppresses deterioration in luminous efficiency of an organic EL element and reduces flickering of projected images and an amplitude of a power supply capacity is disclosed. The apparatus comprises an electroluminescence (EL) element, a projection optical system, and a controller which generates drive signals to control the emission amount from the EL element. An EL material used for a luminescent layer of the EL element is a phosphorescent material which emits phosphorescence by priority, which is emitted from an excited triplet state. The controller generates drive signals by superimposing an intermittent turning-on signal on emission amount modulating signals to modulate current values to be injected into pixels according to display image signals.

Abstract: In a surface treatment method of treating the surface of a material to be treated, by irradiating with light the material to be treated and a mediating material in contact with each other, the mediating material itself causes substantially no interaction upon irradiation with light. The surface of the material to be treated is treated by provision of a chemical reaction field, in which a substituent of the material to be treated and an atom of atomic group of the mediating material is induced by excitation, by irradiating with light by using the logical product of the contact interface between the material to be treated and the mediating material and the light irradiation region, thereby causing and progressing bonded state transition.

Abstract: A method for manufacturing an ink jet recording head in which an ink discharge port for discharging an ink droplet to be adhered to a recording medium, a liquid chamber for containing ink to be supplied to the ink discharge port, an ink low path for communicating the ink discharge port with the liquid chamber, an energy generating element provided in the ink flow path and adapted to generate energy for discharging the ink and an ink supply opening for supplying the ink from exterior into the liquid chamber are formed by bonding or adhering plate members.

Abstract: An exposure apparatus for exposing an object of exposure to a pattern of a mask by reduction projection with a projection lens utilizing light from a light source, comprising a mask fixed to the optical axis, means for dynamically moving the pattern and means for moving the object of exposure, wherein the exposure is moved in synchronization with the movement of the pattern displayed by the mask.

Abstract: A laser processing method, which uses laser beam from a laser oscillator to emit continuously light pulse having large spacial and temporal energy concentration in a pulse emission period of one picosecond or less, and projects a mask pattern with a projection lens onto a work piece almost transparent to the wavelength of the laser beam for sublimation processing thereof, has the steps of setting the focal point of projecting image of the mask pattern on the surface of contour boundary on the opposite side of the work piece irradiated by the laser when the processing begins, at the same time, irradiating and converging the laser beam on the focal point portion so as to make the energy concentration thereof to be more than the threshold value enabling designated ablative action to be generated, moving the work piece in the direction of laser irradiation gradually in a designated amount or at a designated speed in synchronism with the progress of ablation processing by the irradiation of the laser beam, and for

Abstract: A processing method for processing a discharge nozzle in a liquid jet recording head includes the steps of: providing a surface of the discharge port formation plate on the liquid discharge side with a sacrifice layer made of material capable of being processed by the laser light; processing and forming a discharge nozzle on the discharge port formation plate by irradiation of laser light; and removing the sacrifice layer.

Abstract: A laser processing apparatus, which performs light ablation process using laser beam from a laser oscillator continuously emitting light pulse having large spatial and temporal energy concentration at pulse emission time of 1 pico second or less, comprises beam dividing means for dividing laser beam from the laser oscillator into plural beams, and optical systems provided separately for each of the divided beams. With the structure thus arranged, it is made possible for the laser processing apparatus to perform plural processing portions altogether by irradiating laser to them at a time through the optical systems without allowing excessive energy to be generated, thus effectively utilizing energy needed for processing for the increased efficiency thereof, contributing to the enhancement of productivity.

Abstract: A method for processing a discharge nozzle of a liquid jet recording head includes bringing a mask plate on which the shape of an ejection orifice to be formed is patterned into close contact with the liquid ejection side of an ejection orifice forming plate on which a plurality of ejection orifices of a liquid jet recording head are formed, and emitting parallel laser beams from the mask plate side, thereby processing and forming a discharge nozzle at the ejection orifice forming plate.

Abstract: A method for manufacturing an ink discharge port of an ink jet recording head, which is provided with the ink discharge port for discharging an ink liquid droplet for adhesion thereof to a recording medium, a liquid chamber for retaining ink to be supplied to the discharge port, an ink flow path communicated with the discharge port and the liquid chamber, an energy generating element provided for a part of the ink flow path, and an ink supply port for supplying ink from outside to the liquid chamber, comprises the step of processing and forming the wall face inside the ink discharge surface of the ink discharge port in a surface condition having irregularity of 0.3 micrometer or more and 1 micrometer or less as the standard deviation value for the surface roughness thereof.

Abstract: In a surface treatment method of treating the surface of a material to be treated, by irradiating with light the material to be treated and a mediating material in contact with each other, the mediating material itself causes substantially no interaction upon irradiation with light. The surface of the material to be treated is treated by provision of a chemical reaction field, in which a substituent of the material to be treated and an atom of atomic group of the mediating material is induced by excitation, by irradiating with light by using the logical product of the contact interface between the material to be treated and the mediating material and the light irradiation region, thereby causing and progressing bonded state transition.

Abstract: A method for manufacturing an ink jet head. In a thick film laminating step, a patterning layer corresponding to the configuration of ink flow paths on a member provided with a pressure generating source is formed, and an inorganic material layer is overcoated on the patterning layer to form an ink discharge surface. A patterned image of a predetermined ink discharge port configuration is irradiated by a laser capable of completing a sublimate ablation process before the laser beams are dispersed in a work piece as thermal energy. Subsequently, the sublimate ablation process is executed on ink discharge ports almost simultaneously from the inorganic material layer on the ink discharge side up to the interior of the thickness of the patterning layer. The patterning layer is removed after processing the ink discharge ports.

Abstract: A method for manufacturing a liquid jet recording head and a method for manufacturing discharge nozzles thereof through which drops of recording liquid or the like are projected to be deposited on a printing medium. The method for manufacturing the discharge nozzles uses sublimation caused by an ultraviolet laser. In the method, a laser beam is emitted from the liquid ejection side of a discharge port forming plate, and a mask plate having a total-reflection mirror coating layer to prevent it from being damaged is used. The method allows many discharge nozzles, tapered so that they are progressively thinner toward their ends, to be formed on the liquid ejection side of the discharge port forming plate simultaneously in a short period of time.

Abstract: An image recording apparatus includes at least one recording head, in which a plurality of solid-state recording elements are arranged, for performing image recording by causing each of the plurality of solid-state recording elements to record a pixel, a storage unit for storing correction data for correcting image data in accordance with a recording characteristic of each of the plurality of solid-state recording elements so as to correspond to the corresponding one of the plurality of solid-state recording elements. Each of the plurality of solid-state recording elements is driven in accordance with input image data and the correction data stored in the storage unit.

Abstract: A method for forming through holes, which has laser beam as the light source to project the laser beam to the work object using an optical system through a photomask for the formation of through holes on the work object by ablation processing, comprises the steps of increasing the concentration of the optical processing energy contributing to the process using the reflected beam created from the work object in the laser ablation processing; and forming each of through holes having the configuration enabling the narrower end to be changed to the wider end in the incident direction of laser beam. With the structure thus arranged, it becomes possible to increase the energy concentration that contributes to the process as compared with the usual ablation processing, because the reflected beam created in the ablation processing can be utilized again for the optical processing.

Abstract: A method for processing the discharge port of an ink jet head provided with discharge port for discharging ink and a discharge port plate having the discharge port, comprising the following steps of closely contacting the mask plate having opening in the form of the discharge port with the face of the discharge port plate on the ink discharge side; and forming the discharge port on the discharge port plate by irradiating plural high energy ultraviolet parallel beams simultaneously through the mask plate in the direction inclined at a specific angle to the vertical axis of the mask plate face.

Abstract: An image recording apparatus includes at least one recording head, in which a plurality of solid-state recording elements are arranged, for performing image recording by causing each of the plurality of solid-state recording elements to record a pixel, a storage unit for storing correction data for correcting image data in accordance with a recording characteristic of each of the plurality of solid-state recording elements so as to correspond to the corresponding one of the plurality of solid-state recording elements. Each of the plurality of solid-state recording elements is driven in accordance with input image data and the correction data stored in the storage unit.