Canon Kabushiki Kaisha

Keiichirou Takeuchi

Eisuke Nishitani

Fumihiro Goto

Koichiro Nakazawa

Masaki Nitta

Takumi Otani

Kanako Soma

Yoshiaki Murayama

Koji Inoue

Rinako Kameshima

Takao Ogata

Toru Ohnishi

Akira Morita

Minoru Teshigawara

Akihiro Mouri

Nobuyuki Kuwabara

An ink jet recording apparatus according to the present invention includes: a conveying unit that conveys a recording medium; a pretreatment unit that performs corona treatment on a surface of the recording medium; an ink image forming unit configured to be able to form an ink image by applying an ink of at least two colors, the ink containing an anionic pigment; a brightness measuring unit that measures brightness of the ink image; and a corona treatment intensity changing unit configured to change a corona treatment intensity of the pretreatment unit based on a result of the brightness measuring unit.

Ink jet recording apparatus and ink jet recording method

Provided is an ink jet printing method including: subjecting a printing medium to corona discharge treatment; and applying an ink containing an anionic pigment to a surface of the printing medium subjected to the corona discharge treatment, wherein the corona discharge treatment has a discharge quantity of 3,400 W·min/mor more.

Ink jet printing method

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

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

An ink jet recording apparatus of the present invention includes an image forming unit which forms an ink image by discharging and applying ink containing at least a resin and a liquid component as an ink droplet onto a transfer body, a liquid removing unit which removes the liquid component in the ink image, a transfer unit which transfers removes the image, from which the liquid component is removed, onto a recording medium, a fixing unit which performs heating and pressing fixing on the image formed on the recording medium by pressing a fixing substrate, a liquid adhesion determination unit which determines whether a liquid adheres to a surface of the fixing substrate, and a liquid removing condition changing unit which changes a liquid removing condition of the liquid removing unit based on the determination result of the liquid adhesion determination unit.

Ink jet recording method and ink jet recording apparatus

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

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.

An ink jet recording method in which an image is formed by applying onto a recording medium a reaction liquid, an aqueous pigment ink containing an anionic polymer aggregatable by the reaction liquid and a resin-containing aqueous liquid containing an anionic polymer aggregatable by the reaction liquid to form an image, the method including the steps of applying the reaction liquid to the recording medium; applying the aqueous pigment ink to a surface of the recording medium to which the reaction liquid is applied by an ink jet method to form an image; and applying the resin-containing aqueous liquid to the image formed on the recording medium by the ink jet method. The surface tension of the resin-containing aqueous liquid is higher than the surface tension of the aqueous pigment ink.

Ink jet recording method

An image forming apparatus comprising: a color ink applying unit configured to apply color ink to a print medium; a clear ink applying unit configured to apply a plurality of clear inks to the print medium to cover the applied color ink, each clear ink of the plurality of clear inks having a degree of glossiness that is different from each other; and a determining unit configured to determine an amount ratio of each clear ink to each other clear ink of the plurality of clear inks in accordance with the degree of glossiness indicated by the glossiness data and to determine an amount of each clear ink of the plurality of clear inks such that the determined ratio is satisfied and such that the clear inks cover the applied color ink and print medium at approximately% area coverage.

Image forming apparatus and image forming method

An ink jet recording method of transferring onto a recording medium an intermediate image formed on an intermediate transfer member by an ink jet technique to record an image on the recording medium, the method including a pretreatment agent applying step of applying a pretreatment agent onto an intermediate transfer member; an ink applying step of applying an ink by an ink jet technique onto a region of the intermediate transfer member onto which the pretreatment agent is applied, thereby forming an intermediate image; a transfer step of transferring the intermediate image formed on the intermediate transfer member onto a recording medium; and a selection controlling step of controlling selection of execution or non-execution of at least one of the pretreatment agent applying step and the transfer step, based on an amount of the ink applied onto the intermediate transfer member.

A transfer-type image recording method including the steps of applying a treatment liquid that causes aggregation of a component contained in ink to an image formation surface of an intermediate transfer member; applying ink to the surface to form an intermediate image; transferring the image from the surface to an recording medium; and applying an aqueous cleaning liquid to the surface. The treatment liquid contains a nonionic surfactant. In the step of applying a treatment liquid, T1&#x3c;Tc1 is satisfied, where T1 and Tc1 are respectively the temperature and cloud point of the treatment liquid. In the step of applying an aqueous cleaning liquid, T2&#x3e;Tc2 is satisfied, where T2 is the temperature of a liquid mixture, formed on the surface, of a remainder of the treatment liquid and the aqueous cleaning liquid, and Tc2 is the cloud point of the liquid mixture.

Transfer-type image recording method

An ink jet recording apparatus including an ink tank for storing an ink, a flow path member communicating with the ink tank and a recording head for ejecting the ink supplied from the ink tank through the flow path member, wherein the apparatus further includes a light detection unit which applies light to at least one of the ink in the ink tank and the ink in the flow path member and detects the intensity of back-scattered light of the applied light, and an image density correction unit which corrects the density of an image to be recorded on the basis of the intensity of the back-scattered light which has been detected by the light detection unit.

Ink jet recording apparatus

An ink jet recording apparatus includes a recording condition changing unit that changes a recording condition upon formation of an image; an evaluation image input unit that inputs evaluation image data representing an evaluation image including at least two successive adjacent dots to form the evaluation image on a recording medium; a reading unit that reads the evaluation image; an evaluation value calculating unit that calculates an evaluation value based on color information on the evaluation image; an acceptance/rejection determining unit that determines acceptance/rejection of the evaluation image by comparing the evaluation value with an acceptance/rejection determining threshold value; and a recording condition deciding unit that decides that a recording condition used during formation of an evaluation image of which acceptance has been determined is to be used as a recording condition upon formation of the image on the recording medium.

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Komae, Japan

Keiichirou Takeuchi