公开(公告)号：US11661523B2

公开(公告)日：2023-05-30

申请号：US16791473

申请日：2020-02-14

申请人： RICOH COMPANY, LTD.

发明人： Shigeyuki Harada ,  Takuya Yamazaki ,  Takuya Saiga

IPC分类号： C09D11/326 ,  C08F220/14 ,  C08F212/08 ,  B41J2/175 ,  C08G77/14 ,  C08G77/388 ,  B41J2/21 ,  C08F220/28 ,  B41J29/13 ,  C09D11/322 ,  B41J29/02

CPC分类号： C09D11/326 ,  B41J2/17503 ,  B41J2/17509 ,  B41J2/17523 ,  B41J2/2107 ,  B41J2/2114 ,  B41J29/02 ,  B41J29/13 ,  C08F212/08 ,  C08F220/14 ,  C08F220/287 ,  C08G77/14 ,  C08G77/388 ,  C09D11/322 ,  B41J2/17553

摘要： An ink contains water, a pigment, and a polymer having a structure unit represented by the following Chemical structure 1,






where R1 represents an organic group having at least carbon and oxygen.

公开(公告)号：US09850335B2

公开(公告)日：2017-12-26

申请号：US14800064

申请日：2015-07-15

申请人： RICOH COMPANY, LTD.

发明人： Shigeyuki Harada ,  Keita Katoh ,  Masayuki Fukuoka ,  Kazukiyo Nagai ,  Yuusuke Koizuka ,  Tomoyuki Shimada ,  Yoshiki Yanagawa ,  Akiyoshi Sabu ,  Akihiko Matsuyama ,  Takuya Yamazaki

IPC分类号： C08F220/34 ,  C08F220/36 ,  C08F222/10 ,  C09D11/322 ,  C09D11/38 ,  C09D11/107

CPC分类号： C08F222/10 ,  C08F220/36 ,  C09D11/107 ,  C09D11/322 ,  C09D11/38 ,  C08F220/06 ,  C08F222/02 ,  C08F222/1006

摘要： A copolymer includes a structure unit represented by Chemical Formula I; and a structure unit represented by Chemical Formula II, where R1 and R2 each, independently represent hydrogen atoms or methyl groups, X represents a hydrogen atom or a cation, and L represents an alkylene group having 2 to 18 carbon atoms.

公开(公告)号：US11193029B2

公开(公告)日：2021-12-07

申请号：US16804049

申请日：2020-02-28

申请人： RICOH COMPANY, LTD.

发明人： Takuya Yamazaki ,  Shigeyuki Harada ,  Takuya Saiga

IPC分类号： C09D11/107 ,  C09D11/322 ,  B41M5/50 ,  C09D11/033 ,  B41M5/00 ,  C09D11/38 ,  B41J2/21

摘要： An ink contains water, a coloring material, and a polymer having a structure unit represented by the following Chemical formula 1 and a structure unit having an anionic group, where R1 represents a hydrogen atom or a methyl group, L1 is an alkylene group having three to five carbon atoms having a hydroxyl group, L2 is an alkylene group having two to ten carbon atoms, and Ar represents a phenyl group, a biphenyl group, or a naphthyl group.