Abstract: The liquid ejection head includes a plate having a plurality of ejection ports which eject a liquid, a plurality of pressure chambers which respectively connect to the ejection ports, a plurality of piezoelectric elements which respectively deform the pressure chambers, a plurality of thin plates formed with a plurality of flow channels for the liquid, a common liquid chamber which respectively supplies the liquid to the pressure chambers and a plurality of electric wires which respectively transfer a drive signal to the piezoelectric elements.

Abstract: The exposure apparatus includes: a light source which emits parallel light having a wavelength used for exposure; a photomask which includes a substrate, an optical shielding layer and an optical selective layer, the substrate being capable of transmitting the light of the wavelength, the optical shielding layer being made of a material not transmitting the light of the wavelength, the optical selective layer selectively transmitting light in accordance with a shape to be formed by the exposure, the optical shielding layer and the optical selective layer being arranged on a first side of the substrate; a photomask stage which holds the photomask of which the first side has been coated with photosensitive material, in such a manner that the light emitted from the light source falls on a second side of the photomask reverse to the first side and is projected to the photosensitive material on the first side; a photomask rotation device which rotates the photomask stage on an axis perpendicular to the second side

Abstract: The method of manufacturing a nozzle plate includes the steps of: forming a photosensitive film of a negative type photosensitive material on a transparent plate having light transmission characteristics, the photosensitive film being demarcated into an unirradiated region and an irradiated region; and performing exposure of the photosensitive film to light transmitted via a spatial modulation element and the transparent plate, in such a manner that the unirradiated region is not irradiated with the light and the irradiated region is irradiated with the light, wherein, during the exposure of the photosensitive film, change of the unirradiated region is successively performed and change of a time interval when the irradiated region is irradiated with the light is performed in accordance with the change of the unirradiated region.

Abstract: The liquid ejection head comprises an ejection port plate provided with a plurality of ejection ports from which liquid is ejected, wherein: the ejection ports are arranged in a two-dimensional matrix configuration; and the ejection port plate has a curved shape so as to form a portion of a substantially cylindrical shape.

Abstract: The image forming apparatus comprises: a print head with a nozzle surface on which a plurality of nozzles that eject ink are arranged in a two-dimensional matrix; and a rotating drum which is disposed to face the nozzle surface so that the ink ejected from the print head are deposited onto a surface of the rotating drum.

Abstract: A light beam scanning device includes a light source section, a deflector and a reflection type optical system. The light source section is provided with three laser light sources. These laser light sources utilizes different modulation systems depending on corresponding semiconductor lasers. That is, the red-light laser light source and the blue-light laser light source each utilize a direct modulation system and the green-light laser light source utilizes an external modulation system using an external modulator (AOD). Reflecting mirrors and, the deflector and an arcsine mirror, which form the reflection type optical system, are arranged sequentially along an optical path at the side of the light source section from which light is emitted. Accordingly, laser light emitted from the light source section is guided only by the reflection type optical system to a recording material. As a result, no correction for light beams of different wavelengths is required.

Abstract: The liquid discharge head comprises: a plurality of ejection ports which eject liquid; a plurality of pressure chambers which communicate respectively with the plurality of ejection ports; a plurality of piezoelectric elements which deform the plurality of pressure chambers respectively and are provided on a side of the pressure chambers opposite to a side on which the ejection ports are formed; a common liquid chamber which supplies the liquid to the plurality of pressure chambers and is formed on a side of the piezoelectric element opposite to the pressure chambers; and a plurality of electric wires which stand upright from and substantially perpendicular to a surface on which the piezoelectric elements are mounted, the electric wires passing through a partition wall of the common liquid chamber and being electrically connected to the piezoelectric elements, the electric wires being formed by inserting wiring material for forming the electric wires into holes provided in the partition wall of the common liq

Abstract: The liquid ejection head comprises: a plurality of ejection ports which eject liquid; a plurality of pressure chambers which respectively communicate with the ejection ports; a plurality of piezoelectric elements which respectively deform the plurality of pressure chambers and are provided to faces of the pressure chambers opposite to faces on which the ejection ports are formed; a common liquid chamber which supplies the liquid to the plurality of pressure chambers and is formed on a side of the piezoelectric element opposite to the pressure chamber; a plurality of through-hole wires which stand substantially perpendicular to the faces on which the piezoelectric elements are mounted, the through-hole wires running through a partition wall of the common liquid chamber and being electrically connected to the piezoelectric elements in connecting portions, respectively; and a spherical member which has a conductive coating and is disposed in each of the connecting portions, wherein a recess is formed on a side o

Abstract: The liquid ejection head comprises: a plurality of ejection ports through which liquid is ejected; a plurality of pressure chambers which are connected respectively to the ejection ports; a common liquid chamber in which the liquid to be supplied to the pressure chambers is accumulated; a plurality of supply flow channels which connect the common liquid chamber to the pressure chambers; and a plurality of supply restrictors each of which constitutes at least a portion of each of the supply flow channels, wherein at least a portion of one of the ejection ports connected to one of the pressure chambers and a portion of one of the supply restrictors connected to the one of the pressure chambers are processed by means of the same laser beam.

Abstract: The liquid ejection head comprises: a plate having a plurality of ejection ports which eject a liquid; a plurality of pressure chambers which respectively connect to the ejection ports; a plurality of piezoelectric elements which respectively deform the pressure chambers, the piezoelectric elements being provided on a side of the pressure chambers opposite to a side on which the ejection ports are formed; a plurality of thin plates formed with a plurality of flow channels for the liquid; a common liquid chamber which respectively supplies the liquid to the pressure chambers, the common liquid chamber being formed in an opposite side to the pressure chambers with respect to the piezoelectric elements; and a plurality of electric wires which respectively transfer a drive signal to the piezoelectric elements, the drive signal driving the piezoelectric elements for deforming the pressure chambers, wherein: the common liquid chamber is a space which is formed by laminating the thin plates together; and the electri

Abstract: The ejection head comprises: n (where n is an integer not less than 2) pieces of ejection aperture groups arranged in a sub-scanning direction, each of the groups including ejection aperture rows arranged at prescribed intervals in a main scanning direction, each of the ejection aperture rows including a plurality of ejection apertures aligned in an oblique direction with a prescribed angle ? (where 0°<?<90°) with respect to the main scanning direction, wherein: the ejection aperture groups are arranged in such a manner that phases of the ejection aperture groups disposed adjacently in the sub-scanning direction are varied in the main scanning direction so that, in projected ejection aperture rows that are obtained by projecting the ejection apertures of each of the ejection aperture groups to dispose the ejection apertures in the main scanning direction, one of the ejection apertures in one of the groups arranged adjacently in the sub-scanning direction is located between the adjacent ejection aperture

Abstract: The discharging head for discharging liquid onto a discharge receiving medium comprises a vibration plate forming at least a portion of a pressure chamber storing liquid to be discharged; and a piezoelectric element, joined to said vibration plate, for generating a pressure forming a discharge force for discharging liquid inside said pressure chamber; wherein a recess is formed in the approximate center of the region of said vibration plate where said piezoelectric element is installed.

Abstract: The liquid droplet discharge head comprises: a plurality of liquid chambers formed with nozzles which discharge droplets of liquid, the plurality of liquid chambers being arranged two-dimensionally; a plurality of liquid pressure application devices each of which causes the droplet of the liquid of a prescribed volume to be discharged from a corresponding one of the nozzles; at least two main flow channels including flow channel ports which function as connection ports forming at least one of a liquid supply port and a liquid output port; and a plurality of branch flow channels which are connected to the main flow channels and to the liquid chambers and which supply the liquid to the liquid chambers, wherein each of the at least two main flow channels has the flow channel ports formed at both end sections thereof, and the plurality of branch flow channels span respectively between the at least two main flow channels.

Abstract: Unevenness due to dispersion of properties among organic electroluminescent devices is prevented to form an optimal light emission form for exposure. The organic EL devices in lines R1, R2 and R3 have respectively different x-coordinates and move relatively in a y-axis direction with respect to a photosensitive material at a time of exposure to form a horizontal scan line R-all by the exposure. Similarly, lines R4, R5 and R6 further form the horizontal scan line R-all. Thus, the horizontal scan line R-all is exposed twice: by the lines R1, R2 and R3, and by the lines R4, R5 and R6.

Abstract: An exposure head is provided in which a deterioration in image quality, due to density non-uniformity or the like, of an image formed by using plural light beams can be suppressed. A microlens array is provided at a light-exiting side of a LED chip which has plural LED elements. The microlens array has microlenses of the same number as a number of LED elements. The microlenses are arranged in an array form at uniform intervals. The microlens array is lenses of an illumination system which, for example, limit spreading of light beams emitted from the LED chip. Light beams of homogeneous configurations and homogeneous profiles are illuminated onto a theoretical object plane at a time of focusing the light beams onto an exposure drum. In this way, the light beams emitted from the LED elements are illuminated with homogeneous configurations and at homogeneous light amount distributions onto illumination regions by the microlenses which function independently.

Abstract: A light beam scanning device includes a light source section, a deflector and a reflection type optical system. The light source section is provided with three laser light sources. These laser light sources utilizes different modulation systems depending on corresponding semiconductor lasers. That is, the red-light laser light source and the blue-light laser light source each utilize a direct modulation system and the green-light laser light source utilizes an external modulation system using an external modulator (AOD). Reflecting mirrors and, the deflector and an arcsine mirror, which form the reflection type optical system, are arranged sequentially along an optical path at the side of the light source section from which light is emitted. Accordingly, laser light emitted from the light source section is guided only by the reflection type optical system to a recording material. As a result, no correction for light beams of different wavelengths is required.

Abstract: A light beam scanning device includes a light source section, a deflector and a reflection type optical system. The light source section is provided with three laser light sources. These laser light sources utilizes different modulation systems depending on corresponding semiconductor lasers. That is, the red-light laser light source and the blue-light laser light source each utilize a direct modulation system and the green-light laser light source utilizes an external modulation system using an external modulator (AOD). Reflecting mirrors and, the deflector and an arcsine mirror, which form the reflection type optical system, are arranged sequentially along an optical path at the side of the light source section from which light is emitted. Accordingly, laser light emitted from the light source section is guided only by the reflection type optical system to a recording material. As a result, no correction for light beams of different wavelengths is required.

Abstract: Unevenness due to dispersion of properties among organic electroluminescent devices is prevented to form an optimal light emission form for exposure. The organic EL devices in lines R1, R2 and R3 have respectively different x-coordinates and move relatively in a y-axis direction with respect to a photosensitive material at a time of exposure to form a horizontal scan line R-all by the exposure. Similarly, lines R4, R5 and R6 further form the horizontal scan line R-all. Thus, the horizontal scan line R-all is exposed twice: by the lines R1, R2 and R3, and by the lines R4, R5 and R6.

Abstract: A method of and device for detecting an image relevant for subsequent auto-focusing operation, wherein one focus zone is scanned by an image sensor and a histogram for the one focus zone is made. The presence or absence of an image in the one focus zone is judged on the basis of the profile of the histogram. The basis for judgment is the distribution range of the frequencies in the histogram according to the first aspect, and the height of the maximum peak of the histogram curve according to the second aspect. When it is judged that an image relevant for auto-focusing operation is not present in the one focus zone, a binarization level is set from the histogram for the one focus zone.