Canon Kabushiki Kaisha

Rie Takekoshi

Takumi Kaneko

Noboru Kunimine

Keita Ishimi

Daigoro Kanematsu

Mitsutoshi Nagamura

Kazuo Suzuki

Takao Ogata

Naoko Baba

Kazuki Narumi

Yumi Kamimura

Nobuhiko Takekoshi

Ayumi Hirakawa

Toshimitsu Danzuka

Akihiro Tomida

Takayuki Ushiyama

Tatsuo Shimmoto

Taku Yokozawa

Masataka Kato

Masaya Uetsuki

Kazuhiko Sato

Tomoki Yamamuro

Junichi Saito

Shin Genta

Tomomi Furuichi

Hiroto Kango

Akiko Aichi

Hirofumi Ichinose

Yosuke Ishii

Fumiaki Fujioka

Hiromitsu Kishi

Akihiro Kakinuma

Masaharu Shimakawa

Takaaki Shima

Ayumi Yasuda

A printing apparatus including a print head ejecting ink, flowing from a first channel into a pressure chamber, from a nozzle, by driving an ejection energy generating element in the pressure chamber, a circulation pump circulates the ink in a circulation channel including the first channel, the pressure chamber, and a second channel that flows the ink from inside the pressure chamber to the outside, a wiping unit with a cleaning member that wipes an ejection port surface of an ejection port and a winding member that winds the cleaning member, and a control unit controls a cleaning operation in which the wiping unit wipes the ejection port surface. When the cleaning operation is performed after the circulation pump is stopped, the cleaning operation is changed based on an elapsed time from the time the circulation pump stopped driving, and the cleaning operation is controlled based on the elapsed time.

Printing apparatus and a method of controlling a printing apparatus including a control unit controlling a cleaning operation of a wiping unit wiping an ejection port surface

A printing apparatus including a printing unit configured with an ejection port surface for ejecting ink, a wiping unit configured to wipe the ejection port surface using a wiping member by relative movement with the printing unit, an application unit configured to apply a wiping liquid to the wiping member, a detection unit configured to detect the ink on the wiping member, and a control unit configured to cause the printing unit to print a predetermined pattern on a predetermined area of the wiping member and to cause the application unit to apply the wiping liquid, and, then, to cause the detection unit to detect the ink on the predetermined area.

Printing apparatus and control method

A recording apparatus includes a recording unit, a scanning unit configured to perform relative scanning by moving the recording unit and a recording medium relative to each other at least once with respect to a unit region on the recording medium, a recovery unit configured to perform a recovery operation for maintaining or recovering a recording performance of the recording unit for application of a recording material, and a control unit configured to control the recovery unit, wherein the control unit acquires recording mode information about recording of an image to be performed on a recording medium for (n+1)-th page (n being a natural number) and determines, based on the acquired recording mode information, whether to perform an inter-page recovery operation at timing after recording of an image on a recording medium for n-th page ends and before recording of an image on a recording medium for (n+1)-th page starts.

Recording apparatus, control method, and storage medium

A technique for suppressing ejection failure at an ejection port, which is caused by reaction of reaction liquid and ink during a wiping operation, is to be provided. Before the ejection port surface, on which the first ejection port array that is capable of ejecting the ink and the second ejection port array that is capable of ejecting the reaction liquid which reacts with the ink are formed, is wiped by the maintenance unit that is capable of receiving the ink and the reaction liquid, ink that does not contribute to printing is ejected to an area of the maintenance unit between an area abutted by the first ejection port array during the wiping and an area abutted by the second ejection port array during the wiping.

Printing apparatus and maintenance method

A printing apparatus applies liquids so that a reaction liquid and a clear emulsion liquid are mainly applied in a first scanning stage; a coloring material liquid is mainly applied in an intermediate scanning stage; and the clear emulsion liquid is mainly applied in a last scanning stage.

Printing apparatus and printing method

A printing apparatus is operable to eject a plurality of inks having different functions onto any one of a plurality of types of printing medium. The plurality of inks include a first ink containing a coloring material, and a second ink containing a polymer emulsion and substantially no coloring material. The plurality of types of printing medium includes a first printing medium and a second printing medium less permeable to liquid than the first printing medium. When the first printing medium is printed, the first ink is used without using the second ink, and when the second printing medium is printed, both the first and the second ink are used.

An ink set including a first ink containing a pigment and a water-soluble resin having an anionic group, a second ink containing substantially no pigment and a reactive component, and a third ink containing a polymer emulsion and a water-soluble resin having an anionic group. The pKa of the reactive component is lower than the pKa of the anionic group of the water-soluble resin in the first ink and higher than the pKa of the anionic group of the water-soluble resin in the third ink.

Ink set and printing apparatus

A recording apparatus discharges both high-permeability black ink and low-permeability black ink to a boundary between a color area and a black area.

Recording apparatus and recording method

In a recording apparatus, a dot diameter of a first color ink formed by discharging a predetermined amount of the first color ink onto a surface of a second color ink fixed on a recording medium is smaller than a dot diameter of the second color ink formed by discharging the predetermined amount of the second color ink onto a surface of the first color ink fixed on the recording medium, and a recording head discharges the plurality of inks such that with respect to pixels forming an image in a unit area, pixels formed by discharging the second color ink and the first color ink in this order are greater than pixels formed by discharging the first color ink and the second color ink in this order.

Recording apparatus and recording method for improving the clarity of an image

A recording method includes applying and overcoating. A color ink is applied to a region on a medium. A clear ink is applied to the region. The applied color ink and the applied clear ink are overcoated.

Ink jet recording apparatus and ink jet recording method

In a case where ink having a relatively high dot height is ejected a small amount, binary data corresponding to ink having a relatively low dot height is quantized so that dot adjacency is increased.

Image processing apparatus, image processing method, and image recording apparatus

When recording is performed using two different types of inks, the ink discharge order is controlled in a unit region on a recording medium so that the number of pixel regions in which an ink having a relatively high pH buffer capacity in a basic region is applied later is larger than the number of pixel regions in which an ink having a relatively low pH buffer capacity in a basic region is applied later.

Image recording apparatus, image recording method, image processing apparatus, and storage medium

When the contact angle of a first color ink on a layer of a second color ink is larger than the contact angle of the second color ink on a layer of the first color ink, ejection of the first and the second color ink is controlled so that the number of pixel areas onto which the second color ink is applied after the first color ink is larger than the number of pixel areas onto which the first color ink is applied after the second color ink.

Printing apparatus, printing method, image processing apparatus, storage medium, and print control apparatus

An ink containing a plurality of coloring materials having different hues, wherein the bronze value B, which is calculated from tristimulus values of reflected light, of illumination in the direction of an angle of 45 degrees to a normal to the image, in the direction of specular reflection and tristimulus values of illumination light under the same condition of the illumination by using Formula 1, with respect to a predetermined recorded image recorded by the above-described ink is 2.0 or less.

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Kawasaki, Japan

Rie Takekoshi