Invention Grant
US07878643B2 Aqueous ink, ink jet recording method, ink cartridge, recording unit, and ink jet recording apparatus
有权
水性墨水,喷墨记录方法,墨盒,记录单元和喷墨记录装置
- Patent Title: Aqueous ink, ink jet recording method, ink cartridge, recording unit, and ink jet recording apparatus
- Patent Title (中): 水性墨水,喷墨记录方法,墨盒,记录单元和喷墨记录装置
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Application No.: US12160282Application Date: 2008-05-07
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Publication No.: US07878643B2Publication Date: 2011-02-01
- Inventor: Satoshi Kudo , Kenji Moribe
- Applicant: Satoshi Kudo , Kenji Moribe
- Applicant Address: JP Tokyo
- Assignee: Canon Kabushiki Kaisha
- Current Assignee: Canon Kabushiki Kaisha
- Current Assignee Address: JP Tokyo
- Agency: Fitzpatrick, Cella, Harper & Scinto
- Priority: JP2007-126632 20070511; JP2008-112759 20080423
- International Application: PCT/JP2008/058797 WO 20080507
- International Announcement: WO2008/140089 WO 20081120
- Main IPC: G01D11/00
- IPC: G01D11/00 ; B41J2/01 ; B41J2/05

Abstract:
An aqueous ink contains at least an aqueous medium, a surfactant, and a dye. The aqueous medium includes only water and at least one water-soluble organic compound(s) and the static surface tension of the aqueous medium is from 45 mN/m or more to 57 mN/m or less. The dynamic surface tension of the aqueous ink satisfies the following conditions: (1) The dynamic surface tension of the aqueous ink at a lifetime of 50 milliseconds is from 42 mN/m or more to less than 49 mN/m; (2) The dynamic surface tension of the aqueous ink at a lifetime of 500 milliseconds is from 28 mN/m or more to 38 mN/m or less; and (3) A difference between the dynamic surface tension of the aqueous ink at a lifetime of 50 milliseconds and the dynamic surface tension of the aqueous ink at a lifetime of 500 milliseconds is 7 mN/m or more.
Public/Granted literature
- US20100225707A1 AQUEOUS INK, INK JET RECORDING METHOD, INK CARTRIDGE, RECORDING UNIT, AND INK JET RECORDING APPARATUS Public/Granted day:2010-09-09
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