Canon Kabushiki Kaisha

Takuei Ishikawa

Koichiro Nakazawa

Katsuhiro Shirota

Nobuhito Yamaguchi

Hideaki Takamiya

Kazuhiro Nakajima

An ink jet printing apparatus is provided which can produce an image in good condition without contaminating the interior of the printing apparatus or the back of the print medium if the 'marginless printing' using an ink that tends to coagulate is performed. To that end, a step is provided which applies to the ink absorber the coagulation inhibiting liquid that inhibits a colorant contained in the ink from coagulating. This suppresses the coagulation of the colorant on the surface of the absorber, allowing the colorant to quickly soak into the absorber. Therefore, the colorant is prevented from depositing on the absorber surface, alleviating the problems associated with the colorant deposit.

Ink jet printing method and ink jet printing apparatus

Without newly providing a curling inhibition apparatus or a curling inhibitor and without placing excessive restrictions on a composition of an ink or a printing properties enhancing liquid, curling after printing is suppressed. In an ink jet printing apparatus which performs printing on a printing medium by ejecting from a printing head an ink and a reaction liquid which reacts with the ink, said apparatus comprising; means for on the basis of ink ejection data for ejecting the ink onto an one side of the printing medium, generating reaction liquid ejection data for ejecting the reaction liquid onto an other side of the printing medium.

Ink jet printing apparatus, data generation apparatus and printed product

An ink jet printing apparatus is provided in which ink absorbers, capable of performing their function to the fullest extent to quickly absorb an ink that tends to coagulate, are installed to prevent an interior of the printing apparatus and the back of a print medium from being contaminated. To this end, the printing apparatus has an ink absorber that contains a coagulation inhibitor capable of inhibiting the coagulation of colorant contained in the ink. This arrangement inhibits the coagulation of the colorant on the surface or in the interior of the absorber, allowing the colorant to be absorbed quickly and uniformly into the interior of the absorber. Therefore, problems caused by a deposition of the colorant on the surface of the absorber or by a degraded absorbing capability can be alleviated, thus keeping the image output in good condition.

Ink jet printing apparatus, method of manufacturing ink absorber, and ink absorber

An ink jet recording apparatus includes a recording head including a plurality of recording elements for ejecting ink in accordance with image data, wherein an image is formed by carrying out a recording scan N times for the same image area on a recording material, where N is an integer not less than 1, and a setting unit for setting a value of N in accordance with information relating to a glossiness of the recording material.

Ink jet recording apparatus and ink jet recording method

An ink jet printing method and apparatus are provided which, even when an ink containing a colorant with a coagulating property is applied to a glossy print medium; enable to keep the glossiness of the print medium from being degraded. For this purpose, when forming an image on a glossy print medium, a coagulation inhibiting liquid for inhibiting a coagulation of ink is applied to at least a part of an area on the print medium where the ink is applied. This suppresses the coagulation of ink on the print medium surface and assures a quick spreading and soaking of ink. As a result, the surface of the glossy print medium can be kept smooth, retaining its glossiness.

A width A of the scanning area of the ink ejection orifices and a width B of the scanning area of the reacting liquid ejection orifices are respectively set as A=(n&#x2212;a)&#xd7;p and B=n&#xd7;p, while amount of the feeding of the printing sheet during each scan corresponds to the width of the scanning area of the reacting liquid ejection orifices, that is, A=(n&#x2212;a)&#xd7;p. With this system, the width of the scanning area, wherein ejection of the reacting liquid precedes ejection of the ink, is made shorter by C=a&#xd7;p than the width of following scanning area; the scanning area having the width C is scanned two times by the row of the ink ejection orifices, and the thinning process is applied to this area having the width C.

Ink-jet printing method and ink-jet printing apparatus

Disclosed herein is an ink-jet recording process for conducting recording by ejecting a pigment ink and a reaction liquid containing a polyvalent metal salt from a recording section, in which a plurality of nozzles for ejecting the pigment ink and the reaction liquid are arranged, to a recording medium while relatively scanning the recording section to the recording medium, comprising the steps of ejecting the pigment ink having a surface tension lower than that of the reaction liquid to the reaction liquid ejected on the surface of the recording medium; and forming a filmy aggregate by gathering of agglomerates at an interface where the reaction liquid has come into contact with the pigment ink, wherein conditions for ejecting the reaction liquid to a prescribed area on the recording medium when at least the print duty of the ink in the prescribed area is 100% satisfy the relationship of wherein Vd(pl) is an ejection volume per dot of the reaction liquid, Rx(dpi) is a print resolution in the direction of the relative scanning, Ry(dpi) is a print resolution in the arrangement direction of the nozzles, and duty(%) is a print duty of the reaction liquid.

Ink-jet recording process

A method and apparatus for ink jet printing enables a high grade image with the reduced ununiformity of colors to be inexpensively printed. A scan of a print head is executed to apply a reacting liquid to a print medium so that the number of reacting liquid dots impacting a unit area is reduced as the scan moves from a printing start-point of the reacting liquid to a printing end-point. Then, a scan of the print head is executed to apply the coloring inks to the area printed with the reacting liquid. Simultaneously, the reacting liquid is applied to an area which precedes by one band the area printed with coloring inks. Then, the coloring inks are applied. Simultaneously, the reacting liquid is applied to the area which precedes by one band the area printed with coloring inks. An image is formed by repeating the above steps.

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Tokyo, Japan

Takuei Ishikawa