Canon Kabushiki Kaisha

Toru Ohnishi

Ryosuke Hirokawa

Noboru Toyama

Akihiro Mouri

Kyosuke Deguchi

Toru Yamane

Yoichi Takada

Shingo Okushima

Mitsutoshi Noguchi

Atsushi Sakamoto

Satoshi Masuda

Koji Inoue

Yoshiyuki Honda

Toshimori Miyakoshi

Ryohei Goto

Noribumi Koitabashi

Susumu Hirosawa

Takuto Moriguchi

Hiroe Ishikura

Keiichirou Takeuchi

Hiroaki Motooka

Osamu Yoshitake

Minoru Nozawa

Takao Ogata

Haruhiko Terai

Masaki Nitta

Kanako Soma

Taku Higashiyama

There is provided a transfer type ink jet recording apparatus including: an image forming section forming an image by applying, onto a transfer body, a reaction liquid for increasing a viscosity of ink and ink containing an aqueous liquid medium and a coloring material; a liquid absorbing section having a porous body that absorbs at least a part of a liquid component from the formed image; a heating section heating the image treated by the porous body; a transfer section that transfers the heated image onto a recording medium; and a deterioration prevention treatment section including a deterioration preventing agent applying device that applies, onto the porous body provided in the liquid absorbing section, a deterioration preventing agent that prevents deterioration of the transfer body.

Transfer type ink jet recording apparatus and transfer type ink jet recording method

An ink jet recording method of the present invention includes: forming an ink image by ejecting an ink onto a transfer body with an ink jet head in which a recording element substrate provided with an element generating energy to be used for ejecting the ink, a pressure chamber including the element inside, and an ejection orifice ejecting the ink is provided, and the ink in the pressure chamber is circulated between the pressure chamber and the outside of the pressure chamber; and transferring the ink image onto a recording medium by bringing the recording medium into contact with the transfer body on which the ink image is formed, wherein a viscosity of the ink is 2 mPa&#xb7;s or more to 20 mPa&#xb7;s or less.

Ink jet recording method and ink jet recording apparatus

Reaction liquid application Sto an ink receiving medium, formation of a first image by ink application S, liquid absorption Sfrom the first image by a porous body of a liquid absorbing member, cleaning Sof the porous body, and liquid collection Sfrom the porous body are repeated in an inkjet printing method. When the porous body comes into contact with the first image, first chemical species in the reaction liquid contributing to increasing the ink viscosity is contained, on the ink receiving medium and in the porous body, at a higher level in terms of molar equivalent per unit area than second chemical species in the ink also contributing to increasing the ink viscosity. In the liquid collection S, the liquid is collected so that the liquid remains in the porous body on the side to be brought into contact with the first image.

Printing method and printing apparatus

On a conveyance path of a liquid absorbing member including a porous body, a liquid absorbing unitthat absorbs a first liquid from a first image, a recovery liquid applying unitthat applies a recovery liquid to the porous body absorbing the liquid and a liquid collecting unitthat collects a liquid component absorbed by the porous body are arranged in this order, and a cleaning unitthat brings a cleaning member into contact with the conveyance path of the porous body is disposed at least between the liquid absorbing unit and the recovery liquid applying unit or between the liquid collecting unit and the liquid absorbing unit.

Ink jet printing apparatus and ink jet printing method

An ink jet printing apparatus including: an image forming unit which forms an ink image containing an aqueous liquid component and a coloring material, including a reaction solution applying unit and an ink applying unit; and a liquid absorbing unit for absorbing at least a portion of a liquid component from the ink image by bringing a porous body into contact with the ink image, the liquid absorbing unit including a liquid absorbing member having the porous body, wherein the ink applying unit includes a liquid ejection head including a plurality of printing element substrates each having an element which generates energy that is utilized for discharging a liquid, a pressure chamber which has the element in the inside, and a plurality of ejection orifices which discharge a liquid, and the ink is circulated between the inside of the pressure chamber and the outside of the pressure chamber.

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 apparatus includes: an image forming unit for forming an ink image containing a liquid component and a coloring material on a moving ink receiving medium; and a liquid absorbing unit having a liquid absorbing member which absorbs at least a part of the liquid component from the ink image by coming into contact with the ink image on the ink receiving medium, in which, in a moving direction of the ink receiving medium, a curvature radius Rof the ink receiving medium at a contact start position between the liquid absorbing member and the ink image and a curvature radius Rof the liquid absorbing member at the contact start position satisfy a relationship in which R&#x3e;0, R&#x3c;0, and |R|&#x2264;|R

Ink jet recording apparatus and ink jet recording method

Disclosed is an ink jet recording apparatus including an image forming unit that forms a first image including a first liquid and a coloring material on an ink receiving medium; and a liquid absorbing member that includes a porous body which is configured to be brought into contact with the first image so as to absorb at least a portion of the first liquid from the first image, in which an average pore diameter of a first surface of the porous body which is configured to be brought into contact with the first image is equal to or smaller than 0.6 &#x3bc;m, an arithmetic average roughness Ra defined by JIS B 0601:2001 of the first surface of the porous body is equal to or smaller than 1.9 &#x3bc;m, an average pore diameter of a second surface, which is a back surface of the first surface, of the porous body is larger than the average pore diameter of the first surface, and a Gurley value defined by JIS P 8117 of the porous body is equal to or shorter than 10 seconds.

Ink jet recording apparatus

An ink jet recording apparatus including: an image forming unit that forms a first image containing a first liquid and a coloring material on a transfer body; and a liquid absorbing device including a liquid absorbing member having a porous body coming in contact with the first image to at least partially absorb the first liquid from the first image, and a cleaning member coming in contact with the porous body to clean the porous body wherein surface free energy Yof the transfer body, surface free energy Yof the porous body, surface free energy Yof the cleaning member, and a dispersion force component Yof surface free energy of the first image satisfy the following Equation (1):||&#x2003;&#x2003;(1).

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

When a porous body is repeatedly used to perform treatment of absorbing and removing an aqueous liquid component on an image which is formed using a reaction liquid and an ink and contains the aqueous liquid component and a coloring material, recovery treatment for applying a recovery liquid to the porous body is performed, the recovery liquid having a viscosity lower than a viscosity of the reaction liquid and the ink.

A liquid holding amount of a porous body of a liquid absorbing member for removing at least a portion of an aqueous liquid component from an image obtained by ink jet printing is controlled so as to reduce damage to the porous body while maintaining performance of removing attached matters from the porous body by using a cleaning member which abuts on the porous body and has an adhesive force.

Ink jet printing apparatus

In an ink jet recording method including a step of absorbing a liquid component from an image formed of ink and a reaction liquid by a porous body of a liquid absorbing member, a resin fine particle agglomerated by the reaction liquid are contained in the ink, and a particle diameter d50 of a solid content contained in a mixture of the ink after agglomeration and the reaction liquid is larger than an average pore diameter of a porous membrane of the liquid absorbing member, and thereby adhesion of a coloring material to the porous body can be suppressed.

Ink jet recording method using porous body

An inkjet recording apparatus according to the present invention includes an ink image forming unit for forming an ink image on an ink receiving medium by applying ink and reaction liquid for increasing viscosity of the ink onto the ink receiving medium and a liquid absorbing member having a porous body to be brought into contact with the ink image in order to absorb the liquid component from the ink image. The porous body of the liquid absorbing member includes a first layer having a first surface to be brought into contact with the ink image before liquid absorption and a second surface that is a rear surface relative to the first surface, and a second layer held in contact with the second surface of the first layer. The thickness of the first layer is not less than 0.08 times of the average pore size of the second layer.

Inkjet recording apparatus and inkjet recording method

There is provided an ink jet printing method including: an image forming process of applying ink onto an image forming surface of a transfer body to form a first intermediate image; an auxiliary liquid applying process of applying an auxiliary liquid containing a thermoplastic resin onto the first intermediate image on the transfer body to form a second intermediate image; and a transferring process of contacting the second intermediate image on the transfer body with a printing medium and separating the second intermediate image from the transfer body while maintaining a contact state with the printing medium to transfer the second intermediate image to the printing medium, wherein in the auxiliary liquid applying process, an area difference between an area of a first intermediate image and an area of an auxiliary liquid application area in the image forming surface is adjusted.

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Yokohama, Japan

Toru Ohnishi