Thermal transfer recording sheet set and image forming method

Patent metadata

Field	Value
Publication number	US-10195886-B2
Application number	US-201715820124-A
Country	US
Kind code	B2
Filing date	Nov 21, 2017
Priority date	Nov 29, 2016
Publication date	Feb 5, 2019
Grant date	Feb 5, 2019

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.

First claim

What is claimed is:

1. 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), 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 (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), R 9 to R 12 each independently represent an alkyl group or an aryl group that optionally has a substituent,

in the general formula (4), R 13 represents an alkyl group, an aryl group that optionally has a substituent, or an amino group that optionally has a substituent; R 14 represents a hydrogen atom, an alkyl group, an aryl group that optionally has a substituent, or —N(—R a )R b , where R a and R b each independently represent a hydrogen atom, an alkyl group, or an acyl group, and R a and R b optionally bond to each other so as to form a ring; R 15 represents an alkyl group; R 16 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), R 17 and R 18 each independently represent an alkyl group or an aryl group,

in the general formula (6), R 19 and R 20 each independently represent an alkyl group or an aryl group,

in the general formula (7), R 21 to R 25 each independently represent an alkyl group or an aryl group,

in the general formula (8), R 26 and R 27 each independently represent an alkyl group or an aryl group that optionally has a substituent, and

in the general formula (9), R 28 to R 32 each independently represent an alkyl group or an aryl group.

2. The thermal transfer recording sheet set according to claim 1 ,
wherein the image-receiving layer contains the compound represented by the general formula (1), and
R 1 to R 8 in the general formula (1) each independently represent an alkyl group having 3 to 8 carbon atoms.

3. The thermal transfer recording sheet set according to claim 1 ,
wherein the image-receiving layer contains the compound represented by the general formula (1), and
R 1 and R 2 , R 3 and R 4 , R 5 and R 6 , and R 7 and R 8 in the general formula (1) each represent the same substituent.

4. The thermal transfer recording sheet set according to claim 1 ,
wherein the image-receiving layer contains the compound represented by the general formula (2), and
R′ 1 to R′ 8 in the general formula (2) each independently represent an alkyl group having 3 to 8 carbon atoms.

5. The thermal transfer recording sheet set according to claim 1 ,
wherein the image-receiving layer contains the compound represented by the general formula (2), and
R′ 1 and R′ 2 , R′ 3 and R′ 4 , R′ 5 and R′ 6 , and R′ 7 and R′ 8 in the general formula (2) each represent the same substituent.

6. The thermal transfer recording sheet set according to claim 1 , wherein the magenta dye contains at least one compound selected from the group consisting of compounds represented by general formulae (10) to (14),

in the general formula (10), R 33 represents an alkyl group that optionally contains an ethereal oxygen atom or an aryl group that optionally has a substituent,

in the general formula (11), R 34 and R 35 each independently represent an alkyl group or an aryl group that optionally has a substituent,

in the general formula (12), R 36 to R 40 each independently represent an alkyl group or an aryl group that optionally has a substituent,

in the general formula (13), R 41 to R 44 each independently represent an alkyl group or an aryl group that optionally has a substituent, and

in the general formula (14), R 45 and R 46 each independently represent an alkyl group; R 47 represents a hydrogen atom, an alkyl group, or an aryl group that optionally has a substituent; R 48 represents an alkyl group or an aryl group that optionally has a substituent; and R 49 represents a hydrogen atom, an alkyl group, an aryl group that optionally has a substituent, or —N(—R 50 )R 51 , where R 50 and R 51 each independently represent a hydrogen atom, an alkyl group, an aryl group, or an acyl group or R 50 and R 51 bond to each other so as to form a cyclic structure.

7. 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 c

Assignees

• Canon Kk

Inventors

• Santo Tsuyoshi
• Katsumoto Yuko
• Shirota Koromo
• Shintou Taichi
• Muta Hajime
• Noda Tomoyuki

Classifications

• B41M5/345 Primary

  by thermal transfer of dyes or pigments · CPC title

• B41M5/3854

  Dyes containing one or more acyclic carbon-to-carbon double bonds, e.g., di- or tri-cyanovinyl, methine · CPC title

• B41M5/5227

  characterised by organic non-macromolecular additives, e.g. UV-absorbers, plasticisers, surfactants · CPC title

• B41M5/3858

  Mixtures of dyes, at least one being a dye classifiable in one of groups B41M5/385 - B41M5/39 · CPC title

• B41M5/3852

  Anthraquinone or naphthoquinone dyes · CPC title