Invention Grant
- Patent Title: Inkjet recording material
- Patent Title (中): 喷墨记录材料
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Application No.: US10564633Application Date: 2004-08-24
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Publication No.: US07713599B2Publication Date: 2010-05-11
- Inventor: Hiroaki Watanabe , Katsuaki Arai , Yasuro Yokota , Suguru Kashima
- Applicant: Hiroaki Watanabe , Katsuaki Arai , Yasuro Yokota , Suguru Kashima
- Applicant Address: JP Tokyo
- Assignee: Mitsubishi Paper Mills Limited
- Current Assignee: Mitsubishi Paper Mills Limited
- Current Assignee Address: JP Tokyo
- Agency: Kratz, Quintos & Hanson, LLP
- Priority: JP2003-394439 20031125; JP2004-046107 20040223
- International Application: PCT/JP2004/012112 WO 20040824
- International Announcement: WO2005/051670 WO 20050609
- Main IPC: B41M5/00
- IPC: B41M5/00

Abstract:
The object of the present invention is to provide an ink jet recording material which has no cracks on the surface of the ink-receiving layer and possesses both the color developability and the absorbability of pigment inks. According to the present invention, there is provided an ink jet recording material formed by coating a coating solution of a pigment layer and a coating solution of at least one ink-receiving layer in succession on at least one side of a paper support and drying the resulting coating layers, wherein the pigment contained in the pigment layer has an average secondary particle diameter of not less than 1 μm and not more than 5 μm, 50% by volume or more of the total volume of the pigment has a secondary particle diameter of not less than 1.2 μm and not more than 15 μm, a first ink-receiving layer directly coated on the pigment layer contains at least inorganic ultrafine particles, a hydrophilic binder and boric acid or a borate, and the dry coating amount of the first ink-receiving layer is not less than 20% by mass and not more than 120% by mass of the dry coating amount of the pigment layer.
Public/Granted literature
- US20060172093A1 Inkjet recording material Public/Granted day:2006-08-03
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