Canon Kabushiki Kaisha

Noboru Toyama

Yusuke Miyamoto

Yuichi Sonoda

Toru Ohnishi

Akihiro Mouri

Toru Yamane

Kozo Arao

Ryosuke Hirokawa

Kyosuke Deguchi

Katsumi Nakagawa

Atsushi Sakamoto

Hideo Tamura

Satoshi Masuda

Yoshiyuki Honda

Masumitsu Iwata

Ryo Hayashi

Takaharu Kondo

Noribumi Koitabashi

Susumu Hirosawa

Koji Inoue

Riichi Saito

Toshimori Miyakoshi

Hidetoshi Tsuzuki

Takaharu Aotani

Akiya Nakayama

Hiroe Ishikura

Ryohei Goto

Atsushi Yasuno

Hiroaki Motooka

Osamu Yoshitake

Satoru Yamada

Hiroshi Tanioka

Keishi Saito

Yukiko Iwasaki

Yasuyoshi Takai

Takuto Moriguchi

Akira Morita

Toshiya Yuasa

Tomonori Nishimoto

Toshihiro Yamashita

Kozo Arahara

Taku Higashiyama

Norihiko Koizumi

Sayaka Nomura

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

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).

Ink jet recording apparatus and ink jet recording method

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

An inkjet recording method includes applying an aqueous ink and a reaction liquid for increasing the viscosity of the ink to an ejection target medium to form an ink image thereon. The ink image is then subjected to a liquid absorbing treatment using a porous body having a liquid absorbing surface. In the liquid absorption treatment, the liquid absorbing surface is brought into contact with the ink image to absorb at least a part of the liquid component from the ink image by the porous body and the porous body is used repeatedly while it is sometimes carried out from the liquid absorption treatment region for cleaning. Contact information of the porous body including the number of contact times and a contact pressure in each contact is stored and the gas permeability state of the porous body is evaluated by using such contact information.

Inkjet recording method and inkjet recording apparatus

An ink jet recording apparatus includes an image forming unit that forms a first image containing 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 the porous body is a porous sheet in which a first layer which is configured to be brought into contact with the first image, a second layer including a second fiber and a third layer including a third fiber are laminated in this order.

Ink jet recording apparatus and method of producing porous body

An ink jet printing method includes an ink image forming step of forming an ink image onto an ink receiving medium, a liquid absorbing step of performing liquid absorption treatment in which an aqueous liquid component is at least partially absorbed by a porous body from the ink image, by contacting a liquid absorbing surface of the porous body of a liquid absorbing member with the ink image in a liquid absorption treatment region, and a conveying step of conveying the porous body conveyed from the liquid absorption treatment region to the liquid absorption treatment region again. The method also includes a porous body checking step of forming a test pattern for testing an image quality, detecting the image quality of the test pattern, subjected to the liquid absorbing step, by an image quality detecting device, and determining a state of the porous body from obtained detection results.

Ink jet printing method and ink jet printing apparatus

A porous body that includes a first porous layer including a first resin, a second porous layer including a second resin, and a third porous layer including a third resin in this order. The second porous layer has a portion where no material is present when viewed in a thickness direction.

Porous body, ink jet recording method, and ink jet recording apparatus

A method for producing a porous body for use in an ink jet recording apparatus including an image forming unit configured to form a first image including a first liquid and a coloring material on an ink receiving medium, and a liquid absorbing member including the porous body that contacts with the first image to absorb part of the first liquid from the first image. The method includes laminating a first porous layer that contacts with the first image and includes a first resin, and a second and a third porous layer including a second and a third resin; and heating the laminated first to third porous layers, wherein the second porous layer has a void when viewed in a thickness direction, and softening temperatures Tthrough Tof the first to third resins and heating temperature T in heating the first to third porous layers satisfy T&#x3c;T, T&#x3c;T, T&#x3c;T

Porous body, method for producing the porous body, ink jet recording method, and ink jet recording apparatus

In an ink jet printing apparatus, a moisture content of a print sheet is estimated without decreasing productivity of the printing apparatus and appropriate conditions of printing operation in the subsequent printing process are specified. More specifically, by measuring a change in thickness of the print sheet after printing, a state of moisture content is estimated. Estimating a state of moisture content allows determination of appropriate conditions of the printing operation such as a minimum drying time required for printing a high-quality image on various types of print sheets such as print coated paper or coated paper.

Growing community of inventors

Kawasaki, Japan

Noboru Toyama