Invention Grant
- Patent Title: Ink-jet recording method, ink-jet recording apparatus and recorded matter
- Patent Title (中): 喷墨记录方法,喷墨记录装置和记录物
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Application No.: US12376439Application Date: 2008-06-26
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Publication No.: US08110257B2Publication Date: 2012-02-07
- Inventor: Hidefumi Nagashima , Kiyofumi Nagai
- Applicant: Hidefumi Nagashima , Kiyofumi Nagai
- Applicant Address: JP Tokyo
- Assignee: Ricoh Company, Ltd.
- Current Assignee: Ricoh Company, Ltd.
- Current Assignee Address: JP Tokyo
- Agency: Oblon, Spivak, McClelland, Maier & Neustadt, L.L.P.
- Priority: JP2007-167130 20070626
- International Application: PCT/JP2008/062032 WO 20080626
- International Announcement: WO2009/001967 WO 20081231
- Main IPC: B41M5/00
- IPC: B41M5/00

Abstract:
An ink-jet recording method including recording onto a recording medium a black image of composite black using a black ink and color inks, wherein the black ink includes water, a water-soluble organic solvent, a surfactant, and a carbon black whose volume average particle diameter is 40 nm to 100 nm, and the color inks include a cyan ink, a magenta ink and a yellow ink, wherein the mass ratio (A/B) of a solid content A to a water-soluble organic solvent content B in the black ink is in the range of 1/8 to 1/15, and wherein the recording medium includes a support with a coating layer, and the amounts of purified water transferred to the recording medium at contact periods of 100 ms and 400 ms at a temperature of 23 C and a relative humidity of 50% are 2 ml/m2 to 35 ml/m2 and 3 ml/m2 to 40 ml/m2 respectively.
Public/Granted literature
- US20100196673A1 INK-JET RECORDING METHOD, INK-JET RECORDING APPARATUS AND RECORDED MATTER Public/Granted day:2010-08-05
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