Canon Kabushiki Kaisha

Rinako Kameshima

Minoru Teshigawara

Atsushi Takahashi

Yoshiaki Murayama

Takatoshi Nakano

Takuya Fukasawa

Eisuke Nishitani

Masaki Nitta

Keiichirou Takeuchi

Yoshinori Misumi

An inkjet printing apparatus includes a discharge head including orifices that discharge ink, a channel communicating with the orifices, a heating element that generates thermal energy for discharging the ink in the channel, a protection layer having a surface exposed to the channel and covering the heating element, and an electrode having a surface exposed to the channel; a tank that stores the ink to be supplied to the discharge head; an ink circulation unit that performs a circulation operation of circulating the ink between the discharge head and the tank; and a kogation removal unit that performs a removal operation of removing kogation generated around the heating element by applying a voltage between the protection layer and the electrode. The kogation removal unit performs the removal operation after the circulation operation is stopped.

Inkjet printing apparatus and control method thereof

A printing mode for performing printing to a printing medium and a determination mode for determining the application amount of a reaction liquid to a discharge medium can be performed. In the determination mode, a reaction liquid application unit forms a layer of the reaction liquid on the discharge medium, and then an ink application unit applies an ink onto a part of the layer to form a test pattern to be utilized for the determination. In the formation of the test pattern, an image to be formed by the ink by the aggregation of a solid content in the applied ink partially moves and shrinks on the layer of the reaction liquid to be thereby deformed with a grade according to the applied reaction liquid.

Printing apparatus and printing method

A recording apparatus includes an ink application unit configured to apply ink to a transfer body, a first application unit configured to apply a first treatment liquid over an area on the transfer body, a second application unit configured to apply a second treatment liquid to the transfer body, a heating unit configured to heat the second treatment liquid applied to the transfer body, and a transfer unit configured to transfer the ink image, wherein a ratio of the second treatment liquid to the first treatment liquid on an outside of ink portion is determined according to the recording medium.

Recording apparatus and recording method

Control modes for controlling recovery operation and printing operation of an ejection head in relation to each other include first and second control modes that can be selected according to a viscosity of liquid. In such control modes, different recovery operations are set.

A printing apparatus having an ink application unit applying a first ink containing at least resin as a solid content onto a discharge medium, a reaction liquid application unit applying a reaction liquid reacting with a component in the ink to aggregate the solid content in the first ink onto the discharge medium, and a liquid absorbing unit for bringing a liquid absorbing member of a porous body into contact with an ink image formed by the ink and the reaction liquid on the discharge medium to absorb liquid to thereby reduce the amount of the liquid in the ink image, in which a layer is formed with the first ink and the reaction liquid on the discharge medium, and then a test pattern utilized for detection is printed by applying a second ink different from the first ink to a part of the layer by the ink application unit.

Provided are an inkjet printing apparatus and a recovery processing method which can suppress occurrence of defective ejection and can suppress an ink consumption amount. For that purpose, information relating to a condensation degree of ink is obtained, and ejection operation is made in accordance with the obtained condensation degree of ink.

Inkjet printing apparatus and recovery processing method

An inkjet printing apparatus and its control method which can suppress defective ejection and wasteful ink consumption are provided. For that purpose, pigment density Nof the ink in a circulation path is calculated, and the ink in the circulation path is discharged on the basis of the pigment density N.

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Tachikawa, Japan

Rinako Kameshima