Canon Kabushiki Kaisha

Kunihiko Maeoka

Kazuaki Masuda

Tsuyoshi Orikasa

Akio Saito

Hiroshi Sugitani

Masami Ikeda

Yoshifumi Hattori

Asao Saito

Tsutomu Abe

Hiroshi Nakagomi

Takashi Watanabe

Makiko Kimura

Toshio Kashino

Seiichiro Karita

Akira Goto

Teruo Arashima

Jun Kawai

Takashi Ohba

Nobuyuki Kuwabara

Hideo Saikawa

Masaaki Izumida

Koichi Sato

Tsuguhiro Fukuda

Shigeaki Tanaka

Masanori Takenouchi

Osamu Sato

Masashi Miyagawa

Akihiko Shimomura

Shigeo Toganoh

Kenji Aono

Shinichi Hirasawa

Fumio Ichikawa

Hajime Yamamoto

Masahiko Higuma

Nobuyuki Sato

Toshiharu Inui

Yoichi Taneya

Minoru Nozawa

Hidemi Kubota

Kazuhiro Nakajima

Hiroto Takahashi

Masashi Kitani

Susumu Ito

Akira Tsujimoto

Tsunenobu Satoi

Kenichirou Hashimoto

Norihisa Saito

Tadanobu Nagami

Teruo Saito

Yasuro Kashima

Naoko Tada

Keiichi Hirano

An ink jet head for performing recording by discharging inks comprises an element substrate provided with a plurality of discharge energy generating elements for discharging the inks and a grooved member integrally having discharge ports, a plurality of grooves constituting ink flow passages provided corresponding to the discharge energy generating elements, a plurality of recess portions constituting a plurality of liquid chambers for supplying the inks to a plurality of ink flow passages, and separation grooves provided between the plurality of recess portions to separate between the recess portions constituting the liquid chambers. The element substrate and the groove member being jointed together. The liquid chambers are separated by the separation grooves for preventing the inks from flowing between the liquid chambers.

Ink jet recording head, an ink jet unit and an ink jet apparatus using

An ink jet head includes a first member with an energy generating element for generating energy to eject ink, a second member having an ejection outlet forming member provided with an ink ejection outlet through which the ink is ejected, the second member being affixed to the first member to form a liquid passage in fluid communication with the ejection outlet, and urging means for urging the first and second members together to substantially fix them against each other. The ejection outlet forming member has a jaw connected with a surface of the first member which has the energy generating element, the jaw being adjacent a first member side of the ejection outlet. The following relationships are satisfied, namely, b.gtoreq.5 microns, c.gtoreq.3 microns, and a+b is between 20 and 60 microns, where a is the thickness of the ejection outlet forming member, b is a depth of the jaw, and c is a distance between a connecting portion between the ejection outlet forming member and the first member and an inside end of the ejection outlet.

Ink jet recording head with ejection outlet forming member and urging

An ink jet recording apparatus includes a liquid passage for ejection of ink; a liquid chamber for supplying ink to the passage; a device for mounting the recording head on the ink jet recording apparatus at an angle not more than 45 degrees relative to the horizontal plane; wherein the chamber has an internal surface which is slanted in a direction from an ink inlet thereof toward the liquid passage at the angle of 5-40 degrees relative to an extension of the liquid passage.

Ink jet recording head with ink chamber having slanted surfaces to aid

An ink jet recording head is provided with a plurality of ink pathways and a plurality of ejection outlets in communication with the ink pathways. The ink jet recording head includes (a) a support member provided with a plurality of energy generating elements capable of generating energy to be utilized for ejecting ink through the ejection outlets, the energy generating elements being disposed in accordance with the ejection outlets; (b) a grooved top plate provided with a plurality of grooves to establish the ink pathways in accordance with the energy generating elements of the support member; and (c) a protruded member which is protruded above the surface of the grooved top plate. An ink cartridge includes the ink jet recording head and an ink container. An ink jet recording apparatus includes a control mechanism and the ink cartridge.

Ink jet apparatus, ink jet cartridge and ink jet head having a

An ink jet head includes a base member, a first member having recesses and coupled with the base member to form ink passages using the recesses and a second member integral with the first member and extending at an angle from an end of the first member, the second member having ink ejection outlets communicating with the ink passages.

Ink jet apparatus

An ink jet recording method wherein ink is ejected onto a recording material, includes providing an ink jet head having a predetermined number of first ejection outlets for ejecting black ink and a smaller number of second ejection outlets for ejecting ink different from the black ink; effecting recording operation, while scanningly moving the ink jet head in a direction different from a direction in which the recording material is fed, using m second ejection outlets, m+k or m-k first ejection outlets; feeding the recording material through mxp, where p is an interval at which the ejection outlets are arranged; shifting a range of use of the first ejection outlets in a direction of feeding of the recording material; and repeating said recording, feeding and shifting steps.

Color recording apparatus and method

A recording head includes a liquid ejecting outlet, a liquid passage communicating with the ejection outlet, and a heat generating resistor for supplying heat to the liquid in a heat acting portion in the liquid to create a bubble in the liquid passage to eject the liquid through the ejection outlet. A cross-sectional area of the liquid passage increases from the heat acting zone toward the ejection outlet, and this improves performance while also improving head durability.

Liquid jet recording head having internal structure for controlling

Ink jet head and ink jet apparatus provided with said ink jet head

An ink jet recording head is produced by forming in a first substrate a plurality of orifices for ejecting an ink droplet and a reference object for registration; forming in a second substrate ejection energy generating elements for supplying energy for ejecting the ink placed in liquid passages communicating with the orifices; and joining the first substrate and the second substrate together on the basis of the reference object for registration.

Process for producing an ink jet recording head

An ink jet head comprises parts for holding liquid ink, the parts being sealed with a moisture-curing sealant composed mainly of an organic high polymer compound having an alkoxysilane moiety represented by Formula (1) in the molecule thereof: ##STR1## where X is hydrogen, methyl, ethyl, propyl or halogen; R is methyl, ethyl or propyl; and n is 1, 2 or 3.

Ink jet head and ink jet apparatus employing the same

An ink jet head includes a first member provided with an ejection energy generating element for generating energy contributable to ejection of ink; a second member provided with a recess for defining an ink passage with a trapezoidal cross-section by being coupled with the first member, corresponding to the ejection energy generating element; and a third member provided with an ejection outlet which communicates with the ink passage and through which the ink is ejected.

Ink jet head having trapezoidal ink passages, ink cartridge and

An ink jet head includes first and second members for constituting liquid passages by joining them together; the second member has an ejection outlet forming member having a thickness a and is provided with a jaw having a dimension b, wherein an inside end of an ejection outlet of the ejection outlet forming member is displaced by a distance c from adjacent wall of a liquid passage, with b.gtoreq.5 microns, c.gtoreq.3 microns, and 20 microns.ltoreq.a+b.ltoreq.60 microns.

Ink jet recording head and ink jet apparatus having same

An ink jet head includes first and second members for constituting liquid passages by joining them together; and a clamp for applying a line pressure to one of the members. By using such a clamp, the pressing force can be concentrated in a line to provide a uniform pressing force to ensure reliable clamping.

Ink jet recording head having constituent members clamped together

An injection-molding metal mold used for injection-molding a body having a precision portion which is formed at high precision includes a molding cavity in which a precision molding portion for molding the precision portion is set to have a heat conductivity higher than that of general molding portions for molding other portions of the body and shortens the time required by a molding cycle to mold a body having a precision portion. Also, an injection-molding metal mold used for injection-molding a body having a precision portion which is formed at high precision includes a molding cavity constituted by a molding member in which a precision molding portion is formed to mold the precision portion and general molding portions for molding other portions. Also provided is an ejector pin, disposed adjacent to the molding member to partially constitute the cavity; for ejecting a molded body; and a cooling unit for cooling the molding member through the ejector pin. This injection-molding metal mold shortens the time required by a molding cycle to mold a body having a precision portion.

Precision injection-molding metal mold

Growing community of inventors

Kawasaki, Japan

Kunihiko Maeoka