Canon Kabushiki Kaisha

Miki Ito

Toshio Kashino

Shuji Koyama

Ken Ikegame

Hiroaki Mihara

Junji Tatsumi

Yoshiaki Suzuki

Akira Goto

Masashi Miyagawa

Toshinori Hasegawa

Shin Ishimatsu

Masao Furukawa

Masaki Inaba

Hiroyuki Ishinaga

Masami Ikeda

Tsutomu Abe

Hiroyuki Sugiyama

Akio Saito

Hiroshi Sugitani

Takashi Saito

Torachika Osada

Genji Inada

Tomoyuki Hiroki

Masami Kasamoto

Haruhiko Terai

Kouichi Omata

Akio Saitoh

A liquid discharge head having plural liquid paths and plural discharge openings is formed by joining an adhesion face of an orifice plate with an adhesion face of a head main body&mdash;The liquid paths are formed upon joining an element substrate and a ceiling substrate which comprise the head main body. Apertures of the liquid paths are provided in the adhesion face of the head main body, and a protruding portion is provided in the adhesion face of the orifice plate. The protruding portion has a shape corresponding to the cross-sectional shape of one of the liquid paths, and one of the discharge openings is provided in the protruding portion. The protruding portion or a part thereof fits into one of the liquid paths, and is inserted into the liquid path for joining the adhesion face of the orifice plate with the adhesion face of the head main body.

Liquid discharge head and producing method therefor

A liquid discharge head having plural liquid paths and plural discharge openings is formed by joining an adhesion face of an orifice plate with an adhesion face of a head main body. The liquid paths are provided in the head main body, and the adhesion face of the head main body has apertures of the liquid paths. The adhesion face of the orifice plate has recessed portions and protruding portions. The protruding portions have a shape corresponding to the cross-sectional shape of the liquid paths, and the discharge openings are provided in the protruding portions. The protruding portions or parts thereof fit into the liquid paths, and are inserted into the liquid paths for joining the adhesion face of the orifice plate with the adhesion face of the head main body.

A method for manufacturing a liquid discharge head comprises the steps of providing a head main body having liquid flow paths, and an aperture surface having flow path openings communicated with the flow paths; providing a discharge port plate having extrusions each on the circumference of an inside opening communicated with each of the discharge ports, being on the inner face on the side opposite to the discharge port surface provided with discharge ports for discharging liquid, and a base having a substantially flat surface. For this method, the discharge port plate is arranged in a state of these surfaces formed integrally to be in contact; bonding the aperture surface and the inner face to fit the extrusions into the flow path openings by pressing the head main body and the base in the direction of the head main body and the base approaching each other with the discharge port plate between them; and separating the base from other members. With the method of manufacture thus structure, the liquid discharge head presents an excellent discharge efficiency by the provision of the extrusions that enter the flow paths from the orifice plate. It also becomes possible to manufacture a highly reliable liquid discharge head by a simpler manufacturing apparatus in a shorter period of time at lower costs.

Liquid discharge head, method of manufacture therefor and liquid discharge recording apparatus

A method for manufacturing an orifice plate with a plate material having a through hole arranged to become an orifice for discharging liquid comprises the steps of arranging a resin layer in a position corresponding to the through hole on the surface of a conductive substrate in a configuration corresponding to the through hole in a thickness corresponding at least to the lenght of the through hole, forming a metallic layer by means of electro-forming on the exposed surface of a portion of the conductive substrated corresponding to the plate material in a thickness corresponding to the thickness of the plate material in order to obtain the metallic layer in a state where the resin layer is filled in the through hole portion, applying water repellent resin to the surface of the metallic layer having the resin layer filled therein, peeling off the metallic layer from the conductive substrate together with the resin layer to obtain the plate material in a state where the through hole portion is filled with the resin layer, and removing by laser irradiation the resin layer portion of the plate material in a state where the resin layer is filled in the through hole portion having the water repellent layer coated on the surface in order to form the through hole.

Method for manufacturing orifice plate and liquid discharge head

An ink jet printing head in which nozzles and a liquid chamber are formed by adhering a first substrate on which plural walls are formed and a second substrate in mutually opposed manner. The plural walls formed on the first substrate and to be adhered to the second substrate are arranged by the combination of walls of a substantially same width, and the walls are provided with an adhesive layer on the adhering faces thereof and integrally adhered to the second substrate.

Ink jet printing head and method for producing the same

A method for manufacturing liquid jet recording heads, each provided with discharge ports to discharge liquid, a discharge port plate having the discharge ports arranged therefor, and performing ablation processing of holes becoming the discharge ports by use of a mask for projecting the image of the mask onto the discharge port plate with coherent laser beam as light source, comprises the following steps of forming water-repellent layer on the surface of the discharge port plate on the liquid discharge side; and of performing the ablation processing by irradiating the laser beam from the reverse side of the surface of discharge port plate having the water-repellent layer formed thereon in a state of such surface being arranged to be under the atmosphere containing fluorine atom, and forming the discharge ports, at the same time, enabling the substance containing the fluorine atom excited by the laser beam to adhere to the surface having the water-repellent layer formed thereon. In this manner, the throughput of product manufacture is enhanced without any provision of extra processing steps to remove the byproducts to be created by the irradiation of laser beam, hence contributing to a significant cost reduction of the manufacture of liquid jet recording heads.

Method for manufacturing liquid jet recording heads and a head manufactured by such method of manufacture

A laser working method which can easily and accurately work a fine and complicated shape by irradiation of a laser beam is provided. When a plurality of channel grooves are laser worked on a second board constituting a liquid jet recording head and projections are laser worked on the joint surface of groove walls between the channel grooves and the like, the projections are first worked and formed by irradiating the laser beam through a first mask pattern of a high space frequency arranged by transmitting portions to work the projections and light shielding portions. After that, the channel grooves are worked and formed by irradiating the laser beam through a second mask pattern of a low space frequency arranged by transmitting portions to work the channel grooves and light shielding portions. The formation of a secondary product due to the laser working can be reduced. Even when the laser working secondary product exists, the influence by the secondary product can be reduced and the working can be performed. A fine and complicated shape can be stably and cheaply worked.

Manufacturing method of liquid jet recording head using a laser working

A laser processing method comprises at least one of a laser light source, a beam shaping optical system for shaping laser beams, a mask having specific patterns corresponding to the processing configuration of a work, an illumination optical system for illuminating the mask, and a projection optical system for focusing the pattern images of the mask on the processing surface of the work by a specific magnification. This mask is provided with an extinct portion smaller than the quotient of the resolution and specific magnification of the projection optical system. With the method thus arranged, a work can be processed to provide complicated three-dimensional grooves having irregularities in the direction of laser irradiation by one-time processing. Also, the extinct portions make it possible to easily and finely adjust the extinction so that the precision of work processing is enhanced.

Laser processing method, an ink jet recording head, and a system for

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Yokohama, Japan

Miki Ito