Patent application number | Description | Published |
20090096837 | Liquid Ejection Head, Liquid Ejection Apparatus Liquid Ejection Method - A liquid ejection head, having: an insulating nozzle plate provided with a nozzle having, a liquid supply port to supply liquid and an ejection port to eject the liquid supplied from the liquid supply port onto a substrate; a cavity communicating with the liquid supply port to reserve the liquid to be ejected from the ejection port; an electrostatic voltage applying device to generate an electrostatic attraction force by applying an electrostatic voltage between the liquid in the nozzle and the cavity, and the substrate; and a control device to control the electrostatic voltage applying device for conducting polarization relaxation operation by applying an electrostatic voltage having reverse polarity opposite to that of the electrostatic voltage applied in liquid ejection, wherein the nozzle is a flat nozzle and the control device. | 04-16-2009 |
20090195605 | MANUFACTURING METHOD OF NOZZLE PLATE FOR LIQUID EJECTION HEAD, NOZZLE PLATE FOR LIQUID EJECTION HEAD, AND LIQUID EJECTION HEAD - A manufacturing method of nozzle plate for liquid ejection head includes, providing a substrate having a first base material of Si and a second base material, of which the etching rate in Si anisotropic dry etching is lower then that of Si, provided on one side of the first base material, forming a film as a second etching mask on the surface of the second base material, forming a second etching mask pattern having a small-diameter opening shape in the second etching mask film, etching until the etching part is extended through the second base material, forming a film as a first etching mask film on the surface of the first base material, forming a first etching mask pattern having a large-diameter opening shape in the first etching mask film, and Si anisotropic dry etching until the etched part is extended through the first base material. | 08-06-2009 |
20100182361 | Liquid Ejection Head and Liquid Ejection Method - A liquid ejection head including: an insulating nozzle plate | 07-22-2010 |
20130120504 | INKJET PRINTHEAD - An inkjet printhead includes multiple sets each of which includes a nozzle, pressure chamber, and actuator; a circuit board; and a connection member. The circuit board includes a wire, through hole via, and ink channel. The connection member, which connects the wire to a driving unit, is provided outside of an array area where the sets are two-dimensionally arrayed. The number of the nozzle rows is N, and each row includes M nozzles (M and N: integer of 2 or more). The through hole vias corresponding to the nozzles of n nozzle row of the N nozzle rows are provided inside of the array area (n: 1≦n05-16-2013 | |
20140204153 | INKJET PRINTHEAD - An inkjet printhead includes multiple sets each of which includes a nozzle, pressure chamber, and actuator; a circuit board; and a connection member. The circuit board includes a wire, through hole via, and ink channel. The connection member, which connects the wire to a driving unit, is provided outside of an array area where the sets are two-dimensionally arrayed. The number of the nozzle rows is N, and each row includes M nozzles (M and N: integer of 2 or more). The through hole vias corresponding to the nozzles of n nozzle row of the N nozzle rows are provided inside of the array area (n: 1≦n07-24-2014 | |
Patent application number | Description | Published |
20100061003 | ROTARY DISK ECCENTRICITY MEASUREMENT METHOD, ROTARY ENCODER, AND ROTARY MEMBER CONTROL DEVICE - An eccentricity measurement method of measuring the eccentricity between a center of a connection portion of a rotary disk of a rotary encoder connected to a rotary shaft of a rotary member, and a center of a scale provided at the periphery of the rotary disk. The method includes forming, on the rotary disk, a circle pattern concentric with the scale and at least three straight-line patterns intersecting or contacting the circle pattern and the connection portion; and measuring an amount and direction of the eccentricity of the rotary disk by comparing a coordinate of the center of the connection portion, calculated from coordinates of intersections of the straight-line patterns and the connection portion, with a coordinate of the center of the scale, calculated from the coordinates of intersections of the straight-line patterns and the circle pattern. | 03-11-2010 |
20110049789 | DRIVING FORCE TRANSMITTING DEVICE AND DRIVING FORCE TRANSMITTING MECHANISM - A driving force transmitting device comprising: an output shaft which can output a rotating force, and a casing which supports the output shaft so that a leading tip part of the output shaft can expose the outside, wherein the output shaft is provided on the casing so that the tip end surface thereof is flash with or substantially flash with an outer surface of the casing or the tip end surface thereof is recessed interior of the outer surface, and wherein the tip end surface thereof is provided with an engaging part which is insertable/removable to/from an engaged part provided on a driven member. | 03-03-2011 |
20110222892 | DENSITY SENSOR AND IMAGE FORMING APPARATUS INCLUDING THE SAME - A density sensor detects a density of a subject according to a variation in received light. The density sensor comprises a base plate, a light emitting element irradiating a subject with light, the light receiving element receiving light reflected by the subject, lead terminals connected at one end with bottoms of the light emitting and receiving elements, respectively, and electrically connected at the other end with the base plate, and a package containing the light emitting and receiving elements and supported by the base plate, wherein at least one of the lead terminals is configured to be inclined from a halfway position so as to reflect light from the light emitting element in a direction away from the bottom of the light receiving element. | 09-15-2011 |
20120298845 | IMAGE POSITION DETECTOR AND IMAGE FORMING DEVICE - An image position detector includes a light emitting element to emit light to an image on an image carrier, a first light receiving element to receive a specular reflection of light from a surface of the image carrier and output a first light receiving signal, and a second light receiving element to receive a diffuse reflection of light from a surface of the image and output a second light receiving signal. The image position detector is configured to find the end position of the image according to a multiplied value obtained by multiplying values of the first and second light receiving signals by a constant coefficient. | 11-29-2012 |
20130001857 | REFLECTIVE PHOTOSENSOR AND IMAGE FORMING DEVICE INCORPORATING THE SAME - A reflective photosensor detects a target object. The photosensor includes a transparent circuit board, a light emitter and a light receiver on one surface of the circuit board, including a light emitting element and a light receiving element, respectively, and disposed so that the light emitting element and the light receiving element face the one surface, a concave portion on the other surface of the circuit board, including a first refractive face to oppose the light emitting element and refract light from the light emitting element to the light receiving element and a second refractive face to oppose the light receiving element and refract, to the light receiver, a component of the light refracted by the first refractive face and specularly reflected by the target object. | 01-03-2013 |
20130004189 | OPTICAL SENSOR UNIT AND IMAGE-FORMING APPARATUS - An optical sensor unit includes: a light-emitting device; a light-receiving device that receives light which is emitted from the light-emitting device and reflected from an object to be detected, and outputs an output value in accordance with the light; a shutter member that openably and closably covers an incident/exit plane having an exit part where light of the light-emitting device is emitted to the object to be detected and an incident part where light reflected from the object to be detected enters, and has a facing surface facing the incident/exit plane that is an inclined surface inclined to the incident/exit plane; and a corrector that corrects an output value of the light-receiving device when receiving light reflected from the object to be detected, based on an output value of the light-receiving device obtained by emitting light to the inclined surface of the shutter member. | 01-03-2013 |
20130022363 | PHOTOSENSOR AND IMAGE FORMING DEVICE INCORPORATING THE SAME - A photosensor includes a light emitting element to emit light to a target object, a light receiving element to receive the light emitted from the light emitting element and reflected by the target object, and a circuit board on which the light emitting element and the light receiving element are mounted, including at least one protrusion thereon. The light emitting element and the light receiving element each have a terminal. The at least one protrusion is configured to support one of the light emitting element and the light receiving element in a contact manner in a state that the terminal is electrically connected to the circuit board. | 01-24-2013 |