Canon Kabushiki Kaisha

Takuto Moriguchi

Kazuhiro Yamada

Takatsugu Moriya

Zentaro Tamenaga

Shuzo Iwanaga

Koki Nukanobu

Keisuke Yamamoto

Shingo Okushima

Akira Yamamoto

Takeo Tsukamoto

Toshihiko Takeda

Tamaki Kobayashi

Yumi Komamiya

Eiji Takeuchi

Seiichiro Karita

Takahiro Sato

Takatsuna Aoki

Mitsutoshi Noguchi

Toru Ohnishi

Ryosuke Hirokawa

Noribumi Koitabashi

Akihiro Mouri

Ryosuke Sato

Noriyasu Nagai

Toru Yamane

Noboru Toyama

Koichiro Nakazawa

Eisuke Nishitani

Yoichi Takada

Yusuke Miyamoto

Yuu Nishimura

Takumi Otani

Kyosuke Deguchi

Takayuki Sekine

Yusuke Nakaya

Tamaki Kobayahsi

A liquid ejection apparatus includes a liquid ejection head which is provided with a pressure chamber having, in the inside thereof, an energy-generating element, a transfer body onto which a liquid is ejected through the liquid ejection head to form an image, and a pressing unit which presses a recording medium against the transfer body to transfer the image formed on the transfer body onto the recording medium, wherein the liquid ejection apparatus further includes a heating unit for heating the transfer body during a period from the ejection of the liquid through the liquid ejection head and until the pressing of the recording medium by means of the pressing unit, and the liquid in the pressure chamber in the liquid ejection head is circulated between the pressure chamber and the outside of the pressure chamber.

Liquid ejection apparatus with liquid in pressure chamber in liquid ejection head being circulated between pressure chamber and outside

An ink jet recording method repeatedly performing the following steps on a transfer body, a step of forming a first image including a liquid component containing water and a water-soluble organic solvent and an insoluble solid content; a liquid removing step of forming a second image, from which a part of a liquid component contained in the first image is removed; and a transferring step of transferring the second image onto a recording medium by heating the second image to a temperature equal to or higher than a minimum filming temperature of the second image, wherein the minimum filming temperature of the second image is a temperature equal to or higher than 100&#xb0; C.; and the first image is not subjected to a heat history equal to or higher than a boiling point of the water after the step of forming the first image and before the liquid removing step.

Transfer type ink jet recording method with cooled transfer body

According to an embodiment of the present invention, an inkjet printing apparatus capable of controlling temperatures of a transfer member and a printhead properly, and printing a high-quality image is provided. More specifically, in an inkjet printing apparatus that includes a transfer member, a printhead configured to discharge ink to form an image on the transfer member, and a transfer unit configured to transfer the image on the transfer member to a print medium, the following control is performed. That is, the transfer member is heated, a temperature of the heated transfer member is measured, and a temperature of the printhead is adjusted based on the measured temperature.

Inkjet printing apparatus and temperature control method thereof

In a liquid ejection head, it is possible to suppress generation of a temperature distribution of liquid in a direction in which ejection openings are arranged in a print element board. Specifically, a liquid ejection head, which is provided with an ejection opening row in which a plurality of ejection openings for ejecting a liquid are arranged, includes a pressure chamber that communicates with the ejection openings and includes a pressure generation element, a passage which is provided with an opening and extends along the ejection opening row to supply the liquid flowing into the passage through the opening to the pressure chamber, a heater provided around the opening, and a temperature sensor provided in a region along the ejection opening row.

Liquid ejection head and liquid ejection apparatus

A liquid discharge head includes: a recording element board including a discharge orifice configured to discharge liquid, a recording element configured to generate energy to discharge liquid, a pressure chamber having the recording element within, a liquid supply channel configured to supply liquid to the pressure chamber, and a liquid recovery channel configured to recover liquid from the pressure chamber; and a support member configured to support the recording element board, the support member including a supply chamber configured to supply liquid to the liquid supply channel, and a recovery chamber configured to recover liquid from the liquid recovery channel. An inner volume of the recovery chamber is smaller than an inner volume of the supply chamber.

Liquid discharge head and liquid discharge apparatus

An intermediate transfer body includes a surface layer, an elastic layer, and a heat-insulating layer contiguously in the mentioned order, and the surface layer, the elastic layer, and the heat-insulating layer satisfy the following Equations 1 to 4:(1+2)&#xd7;&#x394;&#x2003;&#x2003;Equation 1:100 MPa&#x2264;1&#x2264;1,000 MPa&#x2003;&#x2003;Equation 2:0.5 MPa&#x2264;2&#x2264;50 MPa&#x2003;&#x2003;Equation 3:&#x3bb;3&#x2264;0.13 W/m&#xb7;K&#x2264;&#x3bb;1&#x2264;&#x3bb;2.&#x2003;&#x2003;Equation 4:

Intermediate transfer body, image recording method, and image forming apparatus

A liquid discharge head includes a recording element board having a first face on which multiple recording elements are provided, and discharge orifices for the recording elements, where pressure chambers are formed for each recording element and liquid is discharged from discharge orifices. A liquid supply channel and a liquid recovery channel are provided in common to the plurality of recording elements, in a second face opposite to the recording element board from the first face. The pressure chambers are each made to communicate with the liquid supply channel and the liquid recovery channel by the supply ports and recovery ports respectively, and a flow from the liquid supply channel through the pressure chambers to the liquid recovery channel is generated. A composited flow resistance of the liquid recovery channel and recovery ports is greater than a composited flow resistance of the liquid supply channel and supply ports.

Provided is a liquid ejection head including: a plurality of recording element substrates including energy generating elements that generate ejection energy for ejecting liquid from ejection orifices; a first support member that supports the plurality of recording element substrates such that the recording element substrates are arranged in one or more lines on a main surface of the first support member; and a second support member that supports the first support member on a surface opposite to the main surface. A first thermal resistance concerning an in-plane direction parallel to the main surface, of a region between the recording element substrates in the first support member is higher than a second thermal resistance concerning a thickness direction of the second support member, of a projection region that overlaps with each recording element substrate in the second support member.

Liquid ejection head, recording apparatus and heat radiation method for liquid ejection head

A liquid ejection head including a recording element substrate at one side portion of which an electrode is provided, an electric wiring board arranged opposing to the one side portion of the recording element substrate, a connecting member connecting the electrode provided at the one side portion of the recording element substrate to an electrode terminal provided on the electric wiring board, a sealing member formed across the one side portion of the recording element substrate and the electric wiring board so as to cover the connecting member, and a dummy sealing member provided so as to cover an opposite side portion on the side opposite to the one side portion of the recording element substrate.

Liquid ejection head

An ink jet recording method includes forming first and second liquid composition aggregated layers by respectively applying first and second liquid compositions containing resin to a recording medium using an ink jet recording head; performing heating and pressurization of the medium in a first fixation step using a first fixing unit; and performing heating and pressurization of the medium in a second fixation step using a second fixing unit followed by cooling to separate the medium from the second fixing unit. MFT1&#x3e;MFT2 and T1&#x3e;MFT1&#x2267;T2&#x3e;MFT2&#x2267;T3 are satisfied, where MFT1, MFT2 are, respectively, minimum film forming temperatures of the first and second liquid composition aggregated layers, and T1, T2, and T3 are temperatures of the first and second liquid composition aggregated layers upon heating and pressurization in first and second fixation steps and upon separation in second fixation step, respectively.

Ink jet recording method

In the present invention, an air bubble residing in a filter chamber is purged at a high speed without inducing liquid ejection deficiency at a liquid ejection head. A filter chamber is divided into a first filter chamber and a second filter chamber via a filter. A pump circulates ink through an ink tube and a bypass path between an ink tank and the first filter chamber. A valve capable of regulating a flow of the ink is provided at the ink tube that allows the second filter chamber and a print head to communicate with each other.

Liquid supplying apparatus, liquid ejecting apparatus, and liquid supplying method

A pressure regulating unit capable of suitably regulating pressure to be applied to liquid, a liquid supplying apparatus, and a liquid ejecting apparatus are provided. An ink communication path allows an ink introducing chamber communicating with an ink inlet and a pressure chamber communicating with an ink outlet to communicate with each other. A part of the pressure chamber is formed of a flexible film. A valve including a valve body and a valve seat adjusts an opening degree of the ink communication path. An urging member applies, to the valve, a first urging force acting in a direction in which the ink communication path is closed. An urging member applies, to the film, a second urging force that is greater than the first urging force and acts in a displacement direction in which the volume of the pressure chamber is reduced.

Pressure regulating unit, liquid supplying apparatus, and liquid ejecting apparatus

The present invention provides a pressure regulating unit capable of applying a stable pressure so as to supply liquid, a liquid supplying apparatus, and a liquid ejecting apparatus. An ink communication path allows an ink introducing chamber communicating with an ink inlet and a pressure chamber communicating with an ink outlet to communicate with each other. A valve including a valve body and a valve seat adjusts the opening degree of the ink communication path. An urging member applies, to the valve, an urging force that acts in a direction in which the ink communication path is closed and increases according to an decrease in pressure in the ink introducing chamber.

A liquid ejection head including: a support member, a plurality of printing element boards arranged linearly on the support member, an electric wiring member fixed to the support member, and configured to transmit an electrical signal necessary to eject a liquid to the plurality of printing element boards, a plurality of conductive members arranged in an arranging direction of the plurality of printing element boards, and configured to electrically connect the plurality of printing element boards to the electric wiring member, and a thermosetting sealing member extending in the arranging direction and covering the conductive members, connecting points of the printing element boards with the conductive members, and connecting points of the electric wiring member with the conductive members, wherein the sealing member is divided at, at least one place in the arranging direction.

Liquid ejection head, method for manufacturing liquid ejection head, and liquid ejecting apparatus

A liquid ejection head includes an electrical wiring substrate and a printing element substrate, wherein the position variation of the printing element substrate due to curing of a sealing agent is eliminated. Specifically, a gap between two support members is covered with the electrical wiring substrate so as to be able to prevent a sealing agent from flowing into the gap. As a result, even in the case where the size of the gap varies due to the variation in the dimensional accuracy and/or the variation in the assembly accuracy, the sealing agent will not enter this gap, and therefore the shape thereof can be made substantially uniform regardless of the positions. This results in a substantially uniform stress in curing and contracting of the sealing agent, and the variation in the mounting position of the printing element substrate can be suppressed.

Growing community of inventors

Kamakura, Japan

Takuto Moriguchi