Canon Kabushiki Kaisha

Kenji Hasegawa

Isao Kimura

Atsushi Shiozaki

Takahiro Mori

Masahiko Higuma

Takashi Akiya

Kouichi Touma

Teruo Ozaki

Hirokazu Komuro

Mamoru Sakaki

Asao Saito

Makoto Shibata

Ryuichi Arai

Takashi Fujikawa

Koichi Touma

Masanari Morioka

Naoki Hayashi

Yasuyuki Tamura

Junichi Kobayashi

Tachio Kawai

Kazutoshi Torashima

Takahiro Akiyama

Tetsushi Uneme

Naoya Morohoshi

Sohta Sugimoto

Kazuhiko Kato

Hidemasa Mouri

Yasuyuki Egami

Michiaki Tobita

Sho Shirakata

Ryosuke Nakazawa

Masahiko Ishida

Koichi Toma

Junichi Kohayashi

A cartridge detachably mountable to a main assembly of an image forming apparatus includes a drum unit including a photosensitive drum; a developing unit including a developing roller, a driving force receiving portion, and a development gear; a driving train for transmitting the driving force to the development gear. The developing roller is movable between a contact position and spacing position relative to the drum. The driving train includes a first driving portion connected with the driving force receiving portion and a second driving portion for transmitting the driving force toward the gear. When the developing unit is in the contact position, the first and second driving portions are connected with each other to transmit the driving force from the first driving portion to the second driving portion, and when the developing unit is in the spacing position, the first and the driving portion are not connected.

Process cartridge

There is provided a liquid ejection apparatus configured to circulate ink between an ink tank and an ejection head, the liquid ejection apparatus being capable of suppressing degradation of an ejection performance with a simple, inexpensive, and compact configuration. For this purpose, the liquid ejection apparatus measures impedance of the ink, and supplies, based on this measurement result, an adjusting liquid to a circulating ink.

Liquid ejection apparatus

A method for manufacturing a capacitive transducer is provided having a structure in which a vibrating film is supported to be able to vibrate. The method includes forming a sacrificial layer on a first electrode; forming a layer on the sacrificial layer, the layer forming at least part of the vibrating film; removing the sacrificial layer, including forming etching holes to communicate with the sacrificial layer; forming a sealing layer for sealing the etching holes; and etching at least part of the sealing layer. Before forming the sealing layer, an etching stop layer is formed on the layer forming at least part of the vibrating film. In the step of etching at least part of the sealing layer, the sealing layer is removed until the etching stop layer is reached.

Method for manufacturing a capacitive transducer

Provided is a developer container that accommodates developer, including: a first frame that has a recessed portion; and a second frame that has a first protruding portion, wherein the first frame and the second frame are joined by a first adhering portion in which the recessed portion and the first protruding portion are welded together, and a second adhering portion in which a second protruding portion and a flat portion are welded together, the recessed portion having a positioning inner side face that performs positioning of the first frame and the second frame within a recessed portion. Also provided are a method to manufacture a developer container, a developing apparatus having the developer container, a cleaning apparatus, a process cartridge, and an image forming apparatus.

Developer container, developing apparatus, cleaning apparatus, process cartridge, and image forming apparatus

An ink directly contacts a heating resistor which forms a portion of an electrothermal transducer. The ink is ejected from orifices by using thermal energy generated by supplying an electric current to the heating resistor. The concentration of alkali metal ion is equal to or less than 5&times;10,mol/l.

Ink jet recording method

The heat-generator supporting member of the present invention for an ink-jet head comprises a support comprising a metal, a heat-generating resistance layer for generating thermal energy to be utilized in ink discharge by supply of electric current, an electrode layer electrically connected to the heat-generating resistance layer, a heat-accumulating layer provided under and in direct contact with the heat-generating resistance layer, and a protective layer formed by surface modification of the heat-generating resistance layer and the electrode layer, wherein the heat accumulating layer comprises a plurality of layers comprising a lower layer formed from a silicon oxide film prepared by no-bias sputtering and an upper layer formed from a silicon nitride film or from a silicon oxide film prepared by bias sputtering.

Heat-generator supporting member for ink-jet head and ink-jet head employing the same

There is provided an ink jet head which includes an electrothermal converting body disposed along a pathway of ink, said electrothermal converting body being provided with a heat generating resistor capable of generating, upon energization, heat energy to be directly applied to ink on a heat acting face whereby discharging said ink, characterized in that said heat generating resistor is composed of a material containing at least Ir and other one specific element at the specific respective composition rates or a material containing at least Ir and other two specific elements at the specific respective composition rates, said heat generating resistor constituted by any of said materials being capable of exhibiting a sufficient durability even in the case of driving the ink jet head with a relatively long drive pulse duration.

Substrate for ink jet head, ink jet head provided with said substrate

A head for an ink jet recording apparatus including: an electro-thermal transducer for generating thermal energy for use to discharge ink; and a circuit portion electrically connected to the electro-thermal transducer, wherein the circuit portion has a first conductive layer, an insulating layer disposed on the first conductive layer, and a second conductive layer disposed on the insulating layer, and an opening portion of the insulating layer is filled with a conductor formed by a selective deposition method so that the first conductive layer and the second conductive layer are connected to each other.

Method of fabricating head for recording apparatus

Head for recording apparatus

There is provided a non-single crystalline material characterized by containing Ir, Ta and Al at the following respective composition rates:

Non-single crystalline materials containing Ir, Ta and Al

Ink jet head having heat generating resistor made of non-single

An ink-jet recording process is provided which comprises applying inks to a recording medium having at least an ink-transporting layer and an ink-retaining layer, from the ink-transporting layer side of said recording medium, and thereby forming with a plurality of ink dots a unicolored area observable from the ink-retaining layer side, the dots being formed respectively by application of at least two ink droplets in superposition. A mixed color dot is similarly formed, wherein the amount of ink forming the unicolor dot and the mixed color dot is about the same to provide similar image density, resolution and uniformity.

Ink jet recording with equal amounts of mono- and mixed color droplets

A substrate for an ink jet recording head comprises a support and an electrothermal transducer provided on said support and comprising a heat-generating resistor member and electrodes electrically connected to said heat-generating resistor member, wherein said heat-generating resistor member is comprised of a complex compound comprising a metal boride, silicon and nitrogen.

Ink jet head having heat-generating resistor comprised of a complex

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Kawasaki, Japan

Kenji Hasegawa