Back to results
US 8,328,346 B2Granted
Ink jet recording method and ink jet recording apparatus
AssigneeCanon Kabushiki Kaisha
InventorsSatoshi Kudo, Kumiko Mafune, Yojiro Kojima, Yoshio Kinoshita, Yukako Tamanuki, Shogo Takemoto
Life of this patent
Estimating the term…
Abstract
An ink jet recording method includes an image formation step of forming an image on a recording medium having an ink-receiving layer by ejecting an ink from an ink jet recording head and a humidification step of humidifying a gap between the recording head and the recording medium, in which in the image formation step, at least a cyan ink containing a specific dye and a magenta ink containing a specific dye are used.
Claims8
An ink jet recording method comprising:
- an image formation step of forming an image on a recording medium having an ink-receiving layer by ejecting an ink from an ink jet recording head;
- and
- a humidification step of humidifying a gap between the recording head and the recording medium,
- wherein in the image formation step, at least a cyan ink containing a dye represented by general formula (I) and a magenta ink containing a dye represented by general formula (II) are used:
- wherein in general formula (I), A, B, C, and D each independently represent a six-membered ring having aromaticity, and at least one of A, B, C, and D represents a pyridine ring or a pyrazine ring;
- M's each independently represents a hydrogen atom, an alkali metal, ammonium, or organic ammonium;
- E represents an alkylene group;
- X represents a sulfo-substituted anilino group, a carboxy-substituted anilino group, or a phosphono-substituted anilino group, and the substituted anilino group may further contain one to four substituents of at least one type of substituent selected from the group consisting of a sulfonic acid group, a carboxy group, a phosphono group, a sulfamoyl group, a carbamoyl group, a hydroxy group, an alkoxy group, an amino group, an alkylamino group, a dialkylamino group, an arylamino group, a diarylamino group, an acetylamino group, an ureido group, an alkyl group, a nitro group, a cyano group, a halogen atom, an alkylsulfonyl group, and an alkylthio group;
- Y represents a hydroxy group or an amino group;
- and a, b, and c satisfy 0≦a≦2.0, 0≦b≦3.0, and 0.1≦c≦3.0, provided that a+b+c=1.0 to 4.0 and general formula (II)
- wherein in general formula (II), R1, R2, R3, and R4 each independently represent an alkyl group;
- and M's each independently represent a hydrogen atom, an alkali metal, ammonium, or organic ammonium.
9 more elements
An ink jet recording apparatus comprising:
- a plurality of ink storage portions configured to store a plurality of inks;
- an image forming portion configured to form an image on a recording medium having an ink-receiving layer by ejecting an ink from an ink jet recording head;
- and
- a unit configured to humidify a gap between the recording head and the recording medium,
- wherein the plural inks stored in the plural ink storage portions include a cyan ink containing a dye represented by general formula (I) and a magenta ink containing a dye represented by general formula (II):
- wherein in general formula (I), A, B, C, and D each independently represent an six-membered ring having aromaticity, and at least one of A, B, C, and D represents a pyridine ring or a pyrazine ring;
- M's each independently represents a hydrogen atom, an alkali metal, ammonium, or organic ammonium;
- E represents an alkylene group;
- X represents a sulfo-substituted anilino group, a carboxy-substituted anilino group, or a phosphono-substituted anilino group, and the substituted anilino group may further contain 1 to 4 substituents of at least one type of substituent selected from the group consisting of a sulfonic acid group, a carboxy group, a phosphono group, a sulfamoyl group, a carbamoyl group, a hydroxy group, an alkoxy group, an amino group, an alkylamino group, a dialkylamino group, an arylamino group, a diarylamino group, an acetylamino group, an ureido group, an alkyl group, a nitro group, a cyano group, a halogen atom, an alkylsulfonyl group, and an alkylthio group;
- Y represents a hydroxy group or an amino group;
- and a, b, and c satisfy 0≦a≦2.0, 0≦b≦3.0, and 0.1≦c≦3.0, provided that a+b+c=1.0 to 4.0
- wherein in general formula (II), R1, R2, R3, and R4 each independently represent an alkyl group;
- and M's each independently represent a hydrogen atom, an alkali metal, ammonium, or organic ammonium.
10 more elements
Dependencies are inferred from the claim text.