公开(公告)号：EP1767593A4

公开(公告)日：2007-10-24

申请号：EP05758024

申请日：2005-07-04

申请人： CANON KK

发明人： FUJIMOTO KUNIAKI ,  SATO SHIN-ICHI ,  YOSHIZAWA JUN ,  AIKAWA YOSHIHIDE ,  NAKAMURA KUNIHIKO ,  JINNOU MASANORI

IPC分类号： B41J2/01 ,  B41J2/175 ,  B41M5/00 ,  C09B5/14 ,  C09D11/00 ,  C09D11/30

CPC分类号： C09B5/14 ,  C09D11/328

摘要： This invention provides an ink for ink jet recording that, even when an ink for ink jet recording containing a colorant having a buffer region in an ink working range is used to perform continuous printing for a long period of time, can suppress a deterioration (dissolution) on a liquid contact face in a heat generating part and can suppress the occurrence of disconnection in wiring for applying voltage to the heat generating part. The ink for ink jet recording is used in an ink jet recording apparatus provided with a recording head having a metal and/or metal oxide-containing heat generating part liquid contact face and has a colorant content (% by mass) of not less than 3% by mass based on the total mass of the ink for ink jet recording. The colorant has a buffer region in an ink working range. The ink further contains a compound represented by general formula (I) and/or a compound represented by general formula (II).

公开(公告)号：EP1767591A4

公开(公告)日：2008-08-27

申请号：EP05758022

申请日：2005-07-04

申请人： CANON KK

发明人： AIKAWA YOSHIHIDE ,  FUJIMOTO KUNIAKI ,  SATO SHIN-ICHI ,  YOSHIZAWA JUN ,  NAKAMURA KUNIHIKO ,  JINNOU MASANORI

IPC分类号： B41J2/01 ,  B41M5/00 ,  C09B5/14 ,  C09B62/04 ,  C09B67/44 ,  C09D11/00 ,  C09D11/322 ,  C09D11/328 ,  C09K15/30

CPC分类号： C09D11/40 ,  C09D11/32

摘要： This invention provides an ink for ink jet recording, characterized by comprising a colorant comprising at least a compound represented by general formula (I) or its salt: and a compound represented by general formula (II): This ink can provide image quality comparable with the image quality of silver salt photographs and can realize high lightfastness in records.

公开(公告)号：EP1775327A4

公开(公告)日：2008-08-20

申请号：EP05780169

申请日：2005-07-28

申请人： CANON KK

发明人： OKAMURA DAIJI ,  TAKIZAWA YOSHIHISA ,  SATO SHINICHI ,  YOSHIZAWA JUN ,  NAKAMURA KUNIHIKO ,  AIKAWA YOSHIHIDE ,  YAMASHITA TOMOHIRO ,  JINNOU MASANORI

IPC分类号： B41J2/01 ,  B41M5/00 ,  C09B47/26 ,  C09D11/00 ,  C09D11/322 ,  C09D11/40

CPC分类号： C09D11/40

摘要： A light ink-jet ink which has excellent coloring properties and can combine resistance to environmental gases with freedom from bronzing. The light ink-jet ink is used in combination with a deep ink-jet ink having a relatively high colorant content, and comprises water, a water-soluble organic solvent, and a colorant. The light ink-jet ink is characterized in that the deep ink-jet ink and the light ink-jet ink satisfy a specific requirement.

公开(公告)号：EP1767592A4

公开(公告)日：2007-12-12

申请号：EP05758023

申请日：2005-07-04

申请人： CANON KK

发明人： OKAMURA DAIJI ,  SATO SHIN-ICHI ,  YOSHIZAWA JUN ,  NAKAMURA KUNIHIKO ,  YAMASHITA TOMOHIRO ,  JINNOU MASANORI

IPC分类号： B41J2/01 ,  B41M5/00 ,  C09B47/26 ,  C09D11/00 ,  C09D11/322 ,  C09D11/328

CPC分类号： C09B47/26 ,  C09D11/328

摘要： An ink jet ink is disclosed which includes water, a water-soluble organic solvent and a coloring material and has excellent properties. The coloring material is a specific phthalocyanine derivative and is contained in a specific amount in the ink. The water-soluble organic solvent includes a specific amount of 2-pyrrolidone. In addition, a d 75 value is in a specific range where the d 75 value corresponds to 75% of a dispersion distance distribution, measured by a small angle X-ray scattering method, of molecular aggregates in the ink jet ink whose coloring material concentration is adjusted to 0.5 mass%.

公开(公告)号：EP1767595A4

公开(公告)日：2007-12-05

申请号：EP05758159

申请日：2005-07-04

申请人： CANON KK

发明人： YOSHIZAWA JUN ,  SATO SHIN-ICHI ,  NAKAMURA KUNIHIKO ,  OKAMURA DAIJI ,  YAMASHITA TOMOHIRO ,  JINNOU MASANORI

IPC分类号： B41J2/01 ,  B41M5/00 ,  C09B47/26 ,  C09D11/00

CPC分类号： C09B47/26 ,  C09D11/328

摘要： An ink for ink jet recording that has excellent color development, has a high level of environmental gas resistance, and, further, can yield images having excellent bronze resistance. The ink comprises at least a colorant. The colorant is a compound represented by general formula (I) or its salt. The content (% by mass) of the colorant is not less than 3.0% by mass based on the total mass of the ink for ink jet recording. The dispersion distance d75 value, occupying 75% of a dispersion distance distribution of molecular aggregates in an ink prepared in such a manner that the concentration of the colorant in the ink forink jet recording is 3.0% by mass, as determined by a small angle X-ray scattering method is not less than 6.50 nm to not more than 7.10 nm.