发明名称 |
Ink composition, ink cartridge, inkjet recording device, and inkjet printed matter |
摘要 |
An ink composition contains a pigment; a copolymer comprising a phosphoric acid group or phosphonic acid group; a hydrosoluble solvent; and water, wherein the pigment is represented by the following chemical formula 1 and satisfies the following relation 1:
Y/X≦0.20 Relation 1where X represents a peak intensity at a Bragg (2θ±0.2°) angle in a range of 2θ of from 26.5° to 27.5° and Y represents a peak intensity at a Bragg (2θ±0.2°) angle in a range of 2θ of from 11.0° to 11.5° to a CuKα X-ray having a wavelength of 1.541 Å.; |
申请公布号 |
US9309427(B2) |
申请公布日期 |
2016.04.12 |
申请号 |
US201414456287 |
申请日期 |
2014.08.11 |
申请人 |
Ricoh Company, Ltd. |
发明人 |
Matsuyama Akihiko;Naruse Mitsuru;Nonogaki Masayasu;Nagai Kazukiyo;Katoh Keita;Koizuka Yuusuke |
分类号 |
C09D11/322;C08L43/02;C09D11/107;C09D11/326;C09D11/38 |
主分类号 |
C09D11/322 |
代理机构 |
Oblon, McClelland, Maier & Neustadt, L.L.P. |
代理人 |
Oblon, McClelland, Maier & Neustadt, L.L.P. |
主权项 |
1. An ink composition comprising:
a pigment; a copolymer comprising a phosphoric acid group or phosphonic acid group; a hydrosoluble solvent; and water, wherein the pigment is represented by formula 1 and satisfies the following relation 1:
Y/X≦0.20 Relation 1 where X represents a peak intensity at a Bragg (2θ±0.2°) angle in a range of 2θ of from 26.5° to 27.5° and Y represents a peak intensity at a Bragg (2θ±0.2°) angle in a range of 2θ of from 11.0° to 11.5° to a CuKα X-ray having a wavelength of 1.541 Å wherein the copolymer comprising a phosphoric acid group comprises one of a structure unit represented by formula 2 and a structure unit derived from a radical polymerizable monomer having a diphosphonic acid group: where R1 represents a methyl group or a hydrogen atom, n and m each, independently represent 0 or integers of from 1 to 6 excluding both being 0 at the same time and where at least one of n and m is an integer of at least 2, and M each, independently represents hydrogen atoms, alkali metals, or organic amines. |
地址 |
Tokyo JP |