Canon Kabushiki Kaisha

Yuko Negishi

Yoshihisa Yamashita

Tomohiro Yamashita

Eiichi Nakata

Fumiaki Fujioka

Satoshi Takebayashi

Yoshitaka Torisaka

Yojiro Kojima

Soichi Nagai

Toshiyuki Umesato

Ryuki Nanamiya

Ryo Tsujii

Nao Ishijima

There is provided an ink jet recording method for recording an image on a recording medium with an aqueous ink and an aqueous reaction liquid containing a reactant that reacts with the aqueous ink. The aqueous ink contains a pigment dispersed by the action of a carboxylic acid group, a resin particle and a water-soluble organic solvent. The rate of increase in the particle size of the pigment dispersed by the action of the carboxylic acid group when the pigment comes into contact with the aqueous reaction liquid is 8.0 times or more. The amount of water absorbed by the recording medium from the start of contact to 30 msecin a Bristow method is 10 mL/mor less.

Ink jet recording method and ink jet recording apparatus

An aqueous ink containing a self-dispersible pigment for use in an ink jet recording method using a recording head that ejects an ink by an action of thermal energy. The aqueous ink contains a compound represented by General Formula (I): where in General Formula (I) R's are independently of each other, a sulfonic acid group, a carboxylic acid group, a phosphoric acid group or a phosphonic acid group, Ris a hydrogen atom or an alkyl group, and n is an integer of 1 to 5.

Ink, ink cartridge, and ink jet recording method

An aqueous ink for ink jet containing a self-dispersible pigment, a compound represented by General Formula (I): where in General Formula (I) each R1 independently represents a hydrogen atom or an alkyl group.

An ink jet recording method comprising ejecting an ink from a recording head to record an image on a recording medium using an ink jet recording apparatus. The ink jet recording apparatus includes a main tank having an air communication part, a sub tank, and a recording head. The ratio of the maximum ink storage amount of the main tank to the maximum ink storage amount of the sub tank is 3.0 or more to 50.0 or less. The temperature of the ink in the sub tank is higher than the temperature of the ink in the main tank. The ink contains a coloring material and a particular surfactant.

An aqueous ink for ink jet containing a self-dispersible pigment, an aromatic sulfinic acid or a salt thereof and an aromatic sulfonic acid or a salt thereof.

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Tama, Japan

Yuko Negishi