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Ink set, ink jet recording method, ink cartridge, recording unit and ink jet recording apparatus

An inkjet recording method and a complete set of technologies are applied in the directions of copying/marking methods, inks, printing, etc., which can solve the problems of limited bleeding resistance and movement restrictions, and achieve the effects of excellent bleeding resistance and high image density.

Active Publication Date: 2012-06-13
CANON KK
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

There are a large number of large voids in plain paper, so when ink is used to wet the surface of plain paper, the ink enters the voids, and the movement of the ink in the voids is restricted to a certain extent
Therefore, the relationship of physical properties in various inks has limited influence on bleed resistance

Method used

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  • Ink set, ink jet recording method, ink cartridge, recording unit and ink jet recording apparatus
  • Ink set, ink jet recording method, ink cartridge, recording unit and ink jet recording apparatus
  • Ink set, ink jet recording method, ink cartridge, recording unit and ink jet recording apparatus

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Embodiment

[0291] The present invention will be described in more detail below by giving examples and comparative examples. The present invention is by no means limited to the following examples unless it exceeds the gist thereof. Hereinafter, "part" and "%" are by mass unless otherwise specified.

[0292] -Preparation of Pigment Dispersion-

[0293] Preparation of Pigment Dispersion A

[0294]300 grams of acid carbon black (trade name: MA77, available from Mitsubishi Chemical Corporation) having a pH of 3.0 was added and mixed well with 1,000 ml of water. 450 g of sodium hypochlorite (available chlorine concentration: 12%) was added dropwise to the resulting mixture, and it was stirred at a temperature of 100°C to 105°C. The slurry thus obtained was filtered with filter paper (trade name: FilterPaper No. 2 for Standard; available from Advantec Co., Ltd.), after which the obtained particles were sufficiently washed with water to obtain a pigment wet cake. The obtained pigment wet c...

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PUM

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Abstract

In an ink set having a plurality of inks, the ink set has at least a pigment ink and a dye ink. The pigment ink contains at least water, a surfactant, a self-dispersion pigment, and a poor medium for self-dispersion pigment and / or a salt; a dynamic surface tension of the pigment ink at a lifetime of 50 milliseconds is higher than 47 mN / m. The dye ink contains at least water, a surfactant and a dye. An ink set is provided which can obtain images having a high image density and a superior bleeding resistance without regard to the types of recording mediums.

Description

Technical field [0001] The present invention relates to an ink set, an inkjet recording method, an ink cartridge, a recording unit and an inkjet recording apparatus. Background technique [0002] In recent years, inkjet recording devices carrying both pigment inks and dye inks have become popular, and can simultaneously achieve clear recording of images such as photographs and clear recording of ordinary images on recording media such as plain paper mainly in monochrome mode. Files, web pages, emails, etc. When recording an image on a recording medium, plain paper, by utilizing an ink set having pigment ink and dye ink, in order to obtain a high image quality level, it is necessary to use ink that not only provides high image density but also results in few stains. Using an ink that causes less stains can suppress the generation of stains at the boundaries where an image formed using a pigment ink and an image formed using a dye ink are adjacent to each other, that is, an i...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09D11/00B41J2/01B41J2/175B41M5/00C09D11/322C09D11/324C09D11/326C09D11/328C09D11/38
Inventor 柳町聪美真船久实子真田干雄森部镰志渡边智成冈村大二山上英树工藤智中村文一
Owner CANON KK