Back to results
US 10,195,886 B2Granted
Thermal transfer recording sheet set and image forming method
AssigneeCanon Kabushiki Kaisha
InventorsTsuyoshi Santo, Yuko Katsumoto, Koromo Shirota, Taichi Shintou, Hajime Muta, Tomoyuki Noda
Life of this patent
Estimating the term…
Abstract
A thermal transfer recording sheet set includes an image-receiving sheet that includes an image-receiving layer containing a compound represented by general formula (1) or (2) and an ink sheet that includes a yellow coloring material layer containing a particular dye and a cyan coloring material layer containing a particular dye.
Claims7
A thermal transfer recording sheet set comprising:
- an ink sheet;
- and
- an image-receiving sheet,
- wherein the image-receiving sheet is a thermal transfer image-receiving sheet including an image-receiving layer containing at least one compound selected from the group consisting of compounds represented by general formulae (1) and (2), the image-receiving layer being disposed on a substrate,
- the ink sheet is a thermal transfer recording ink sheet including a coloring material layer containing a yellow dye, a coloring material layer containing a magenta dye, and a coloring material layer containing a cyan dye, the coloring material layers being disposed on a substrate,
- the yellow dye contains at least one compound selected from the group consisting of compounds represented by general formulae (3) to (6), and
- the cyan dye contains at least one compound selected from the group consisting of compounds represented by general formulae (7) to (9),
- in the general formula (1), R1 to R8 each independently represent an alkyl group that has 3 to 8 carbon atoms and optionally has a substituent, an alkenyl group that optionally has a substituent, an aralkyl group that optionally has a substituent, an alkynyl group that optionally has a substituent, or an aryl group that optionally has a substituent;
- R1 and R2, R3 and R4, R5 and R6, and R7 and R8 each optionally bond to each other so as to form a ring;
- and X− represents an anion,
- in the general formula (2), R′1 to R′8 each independently represent an alkyl group that has 3 to 8 carbon atoms and optionally has a substituent, an alkenyl group that optionally has a substituent, an aralkyl group that optionally has a substituent, an alkynyl group that optionally has a substituent, or an aryl group that optionally has a substituent;
- R′1 and R′2, R′3 and R′4, R′5 and R′6, and R′7 and R′8 each optionally bond to each other so as to form a ring;
- and X′− represents an anion,
- in the general formula (3), R9 to R12 each independently represent an alkyl group or an aryl group that optionally has a substituent,
- in the general formula (4), R13 represents an alkyl group, an aryl group that optionally has a substituent, or an amino group that optionally has a substituent;
- R14 represents a hydrogen atom, an alkyl group, an aryl group that optionally has a substituent, or —N(—Ra)Rb, where Ra and Rb each independently represent a hydrogen atom, an alkyl group, or an acyl group, and Ra and Rb optionally bond to each other so as to form a ring;
- R15 represents an alkyl group;
- R16 represents a hydrogen atom or an alkyl group;
- Y represents a carbonyl group or a sulfonyl group;
- and n represents an integer of 1 to 3,
- in the general formula (5), R17 and R18 each independently represent an alkyl group or an aryl group,
- in the general formula (6), R19 and R20 each independently represent an alkyl group or an aryl group,
- in the general formula (7), R21 to R25 each independently represent an alkyl group or an aryl group,
- in the general formula (8), R26 and R27 each independently represent an alkyl group or an aryl group that optionally has a substituent, and
- in the general formula (9), R28 to R32 each independently represent an alkyl group or an aryl group.
22 more elements
A method for forming an image, comprising:
- heating an ink sheet with a heating unit while the ink sheet and an image-receiving sheet are placed on top of each other to transfer a coloring material of the ink sheet to the image-receiving sheet,
- wherein the image-receiving sheet is a thermal transfer image-receiving sheet including an image-receiving layer containing at least one compound selected from the group consisting of compounds represented by general formulae (1) and (2), the image-receiving layer being disposed on a substrate,
- the ink sheet is a thermal transfer recording ink sheet including a coloring material layer containing a yellow dye, a coloring material layer containing a magenta dye, and a coloring material layer containing a cyan dye, the coloring material layers being disposed on a substrate,
- the yellow dye contains at least one compound selected from the group consisting of compounds represented by general formulae (3) to (6), and
- the cyan dye contains at least one compound selected from the group consisting of compounds represented by general formulae (7) to (9),
- in the general formula (1), R1 to R8 each independently represent an alkyl group that has 3 to 8 carbon atoms and optionally has a substituent, an alkenyl group that optionally has a substituent, an aralkyl group that optionally has a substituent, an alkynyl group that optionally has a substituent, or an aryl group that optionally has a substituent;
- R1 and R2, R3 and R4, R5 and R6, and R7 and R8 each optionally bond to each other so as to form a ring;
- and X− represents an anion,
- in the general formula (2), R′1 to R′8 each independently represent an alkyl group that has 3 to 8 carbon atoms and optionally has a substituent, an alkenyl group that optionally has a substituent, an aralkyl group that optionally has a substituent, an alkynyl group that optionally has a substituent, or an aryl group that optionally has a substituent;
- R′1 and R′2, R′3 and R′4, R′5 and R′6, and R′7 and R′8 each optionally bond to each other so as to form a ring;
- and X′− represents an anion,
- in the general formula (3), R9 to R12 each independently represent an alkyl group or an aryl group that optionally has a substituent,
- in the general formula (4), R13 represents an alkyl group, an aryl group that optionally has a substituent, or an amino group that optionally has a substituent;
- R14 represents a hydrogen atom, an alkyl group, an aryl group that optionally has a substituent, or —N(—Ra)Rb, where Ra and Rb each independently represent a hydrogen atom, an alkyl group, or an acyl group, and Ra and Rb optionally bond to each other so as to form a ring;
- R15 represents an alkyl group;
- R16 represents a hydrogen atom or an alkyl group;
- Y represents a carbonyl group or a sulfonyl group;
- and n represents an integer of 1 to 3,
- in the general formula (5), R17 and R18 each independently represent an alkyl group or an aryl group,
- in the general formula (6), R19 and R20 each independently represent an alkyl group or an aryl group,
- in the general formula (7), R21 to R25 each independently represent an alkyl group or an aryl group,
- in the general formula (8), R26 and R27 each independently represent an alkyl group or an aryl group that optionally has a substituent, and
- in the general formula (9), R28 to R32 each independently represent an alkyl group or an aryl group.
20 more elements
Dependencies are inferred from the claim text.