WO2004103717A1 - 感熱転写記録用インドアニリン系色素、並びにそれを用いた感熱転写記録用インク及び感熱転写記録用シート - Google Patents
感熱転写記録用インドアニリン系色素、並びにそれを用いた感熱転写記録用インク及び感熱転写記録用シート Download PDFInfo
- Publication number
- WO2004103717A1 WO2004103717A1 PCT/JP2004/007288 JP2004007288W WO2004103717A1 WO 2004103717 A1 WO2004103717 A1 WO 2004103717A1 JP 2004007288 W JP2004007288 W JP 2004007288W WO 2004103717 A1 WO2004103717 A1 WO 2004103717A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- group
- thermal transfer
- transfer recording
- dye
- carbon atoms
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Ceased
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Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
- B41M—PRINTING, DUPLICATING, MARKING, OR COPYING PROCESSES; COLOUR PRINTING
- B41M5/00—Duplicating or marking methods; Sheet materials for use therein
- B41M5/26—Thermography ; Marking by high energetic means, e.g. laser otherwise than by burning, and characterised by the material used
- B41M5/382—Contact thermal transfer or sublimation processes
- B41M5/385—Contact thermal transfer or sublimation processes characterised by the transferable dyes or pigments
- B41M5/39—Dyes containing one or more carbon-to-nitrogen double bonds, e.g. azomethine
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09B—ORGANIC DYES OR CLOSELY-RELATED COMPOUNDS FOR PRODUCING DYES, e.g. PIGMENTS; MORDANTS; LAKES
- C09B53/00—Quinone imides
- C09B53/02—Indamines; Indophenols
Definitions
- the present invention relates to a dye used for thermal transfer recording, particularly to a dye transfer type thermal transfer recording, and to an ink for thermal transfer recording and a sheet for thermal transfer recording using the dye.
- the dye transfer type thermal transfer recording is performed by superposing a heat transfer recording sheet having a color material layer containing a heat transferable dye on a base film and an image receiving sheet having a dye receiving layer on the surface.
- the recording is carried out by heating the thermal transfer recording sheet and transferring the dye in the thermal transfer recording sheet to an image receiving sheet.
- This recording method is used for full-color image recording such as video printing, because gradation expression can be easily performed by controlling the transfer amount of the dye by the magnitude of the heating energy.
- Patent Documents 1 to 5 disclose various kinds of indoaniline dyes for thermal transfer recording.
- Patent Document 1 specifically discloses a dye represented by the following structural formula.
- Patent Document 2 specifically discloses a dye having the following structural formula
- Patent Document 3 specifically discloses a dye having the following structural formula
- Patent Document 4 specifically discloses a dye having the following structural formula
- Patent Document 5 specifically discloses a dye having the following structural formula.
- Patent Document 1 Japanese Patent Application Laid-Open No. Sho 61-31192
- Patent Document 2 Japanese Patent Application Laid-Open No. Sho 61-35995
- Patent Document 3 Japanese Patent Application Laid-Open No. Hei 4-28 4 2 9 4
- Patent Document 4 Japanese Patent Application Laid-Open No. 5-85562
- Patent Document 5 Japanese Patent Application Laid-Open No. 5-1699859 Disclosure of the invention
- the present invention relates to a dye for thermal transfer recording which satisfies the above-mentioned conditions required for a dye for thermal transfer recording, in particular, a hue, a color density, and a light fastness of a recorded matter, and a thermal transfer recording dye using the same.
- An object of the present invention is to provide an ink and a thermal transfer recording sheet.
- the present inventors have conducted intensive studies, and as a result, in the indoor diphosphorus compound, each of the two rings has a substituent at a specific position, and both alkyl groups of the dialkylamino group at the p-position of the imino group are acyloxy.
- the present inventors have found that the above problems can be solved by using a dye having a structure substituted with a group, and have completed the present invention.
- Ri represents an alkyl group, an alkoxy group or a trifluoromethyl group
- R 2 represents a halogen atom
- R represents an alkyl group
- R 4 represents an alkyl group or an alkoxy group
- R 5 and R 6 each independently represents an alkyl group, an alkoxyalkyl group, an alkoxy group or a trifluoromethyl group
- m and n each independently represent an integer of 1 to 3
- the dye for thermal transfer recording according to the present invention is represented by the general formula (I).
- the dye of the present invention is characterized in that a halogen atom is introduced into R 2 , and a dialkylamino group at the p-position of the imino group is substituted with two acyloxy groups, and the combination is carried out.
- RR 3 , R 4 , R 5 and R 6 in the formula (I) those having a range of substituents known in known indaniline dyes can be used.
- R 1 represents a linear or branched alkyl group, a linear or branched alkoxy group, or a trifluorostil group.
- the alkyl group include methyl, ethyl, n-propyl, isopropyl, n-butyl, isobutyl, t-butyl, n-hexyl, n-hexyl, and 2-butyl.
- Examples thereof include an alkyl group having 1 to 10 carbon atoms such as an ethylhexyl group.
- an alkyl group having 1 to 4 carbon atoms, particularly a methyle group or an ethyl group is preferred.
- alkoxy group examples include a methoxy group, an ethoxy group, an n-propoxy group, an isopropyloxy group, an n-butoxy group, an isobutyloxy group, a t-butyloxy group, an n-hexyloxy group, an n-octyloxy group, and 2-ethyl.
- An alkoxy group having 1 to 10 carbon atoms such as a hexyloxy group is exemplified. Of these, alkoxy groups having 1 to 4 carbon atoms, especially methoxy Groups or ethoxy groups are preferred.
- R 2 represents a fluorine atom, a chlorine atom, a bromine atom or an iodine atom. Of these, a chlorine atom or a bromine atom, particularly a chlorine atom, is preferred.
- R 3 represents a linear or branched alkyl group.
- the alkyl group include a methyl group, an ethyl group, an n-propyl group, an isopropyl group, an n-butyl group, an isobutyl group, a t-butyl group, an n-hexyl group, an n-octyl group, and a 2-ethyl group.
- An alkyl group having 1 to 10 carbon atoms such as a xyl group can be used. Of these, an alkyl group having 1 to 4 carbon atoms, particularly a methyl group or an ethyl group, is preferred.
- R 4 represents a linear or branched alkyl group or a linear or branched alkoxy group.
- the alkyl group include a methyl group, an ethyl group, an n-propyl group, an isopropyl group, an n-butyl group, an isobutyl group, a t-butyl group, an n-hexyl group, an n-hexyl group, Examples thereof include an alkyl group having 1 to 10 carbon atoms such as an ethylhexyl group. Of these, an alkyl group having 1 to 4 carbon atoms, particularly a methyl group or an ethyl group, is preferred.
- alkoxy group examples include a methoxy group, an ethoxy group, an n-propoxy group, an isopropyloxy group, an n-butoxy group, an isobutyloxy group, a t-butoxy group, an n-hexyloxy group, and an n-octyloxy group
- an alkoxy group having 1 to 10 carbon atoms such as a 1,2-ethylhexyloxy group and the like.
- an alkoxy group having 1 to 4 carbon atoms, particularly a methoxy group or an ethoxy group is preferred.
- R 5 and R 6 are each independently a linear or branched alkyl group, a linear or branched alkoxyalkyl group, a linear or branched alkoxy group, or a trifluoromethyl group; Represents Examples of the alkyl group include methyl, ethyl, n-propyl, isopropyl, n-butyl, isobutyl, t-butyl, n-hexyl, n-octyl, and 2-ethyl.
- An alkyl group having 1 to 10 carbon atoms such as a hexyl group is exemplified.
- a group having 1 to 4 carbon atoms particularly a methyl group, an ethyl group, an n-propyl group or an isopropyl group is preferred.
- the alkoxyalkyl group include a methoxymethyl group, a methoxyethyl group, a methoxypropyl group, an ethoxyxyl group, an n-propoxyxethyl group, an isopropyloxyxethyl group, an n-butoxypropyl group, and an isoptyloxy group.
- alkoxyalkyl groups having 2 to 15 carbon atoms such as a shetyl group, a t-butoxyshetyl group, and an n-propoxyptyl group.
- alkoxyalkyl groups having 2 to 4 carbon atoms particularly methoxyethyl group, ethoxy An ethyl group or a methoxypropyl group is preferred.
- alkoxy group examples include a methoxy group, an ethoxy group, an n-propoxy group, an isopropyloxy group, an n-butoxy group, an isobutyloxy group, a t-butoxydi group, an n-hexyl group, and a 2-ethylhexyl.
- an alkoxy group having 1 to 10 carbon atoms such as an oxy group.
- an alkoxy group having 1 to 4 carbon atoms, particularly a methoxy group, an ethoxy group, an n-propoxy group or an isopropyl pyroxy group is preferred.
- n and n each independently represent an integer of 1 to 3, and preferably both are 2.
- the dye of the present invention is usually soluble in water or an organic solvent.
- R 'R 5 and the total number of carbon atoms of R 6 is preferably 4 or more and 7 And particularly preferably 4 or more and 6 or less. Therefore, it is preferable to the total number of carbon atoms of RR 5 and R 6 in this range.
- R 1 represents a methyl group, an ethyl group, an n-propyl group, an isopropyl group, a methoxy group, an ethoxy group or a trifluoromethyl group
- R 2 represents a chlorine atom
- R 3 represents a methyl group or an ethyl group
- R 4 represents a methyl group, an ethyl group or a methoxy group
- R 5 and R 6 each independently represent a methyl group, an ethyl group, or an n-propyl group Isopropyl group, methoxyethyl group, ethoxyethyl group, methoxypropyl group, methoxy group, ethoxy group or trifluoromethyl group, and m and n each preferably represent 2.
- the effects of the present invention can be obtained.
- the molecular weight of the dye must be Usually, it is preferably 800 or less, particularly preferably 700 or less, particularly preferably 400 to 600.
- the dye of the present invention exhibits a cyan color tone, and the dye has a maximum absorption wavelength ( ⁇ max) of usually from 600 to 750 nm.
- the dye represented by the general formula (I) is obtained by reacting the phenols (II) with an aniline represented by the following general formula (IV) to obtain an indoor dilinyl represented by the general formula (V).
- a compound can also be produced by acylating each of these two hydroxyl groups (see Patent Document 3).
- Examples of the medium include alcohols such as methyl alcohol, ethyl alcohol, isopropyl alcohol, and isobutyl alcohol; cellosolves such as methyl sorb and ethyl sorb; aromatics such as toluene, xylene, and benzene; acetic acid Esters such as ethyl and butyl acetate; ketones such as acetone, methyl ethyl ketone, methyl isobutyl ketone and cyclohexanone; chlorinated solvents such as methylene chloride, chloroform, and trichloroethylene; solvents such as detrahydrofuran and dioxane; Monoters: organic solvents such as polar solvents such as N, N-dimethylformamide and N-methylpyrrolidone; and water.
- alcohols such as methyl alcohol, ethyl alcohol, isopropyl alcohol, and isobutyl alcohol
- cellosolves such as
- the solvents may be used alone or as a mixture of two or more. It is preferable to use the dye in the ink in an amount of 0.5 to 20% by weight, particularly 1 to 15% by weight, particularly 2 to 15% by weight.
- the heat-sensitive transfer recording ink may be prepared by dissolving or dispersing a mixture of other dyes in the medium as long as the effect of the present invention is not impaired.
- binder examples include water-soluble resins such as cellulose, acrylic acid, starch, and epoxy resins; acrylic resins, methacrylic resins, polystyrene, polycarbonate, polyethersulfone, polyvinyl butyral, ethyl cellulose, and acetyl cellulose. Resins that are soluble in organic solvents such as polyester, AS resin, and phenoxy resin. These binders may be used alone or as a mixture of two or more. It is 'preferable' that the ratio of the binder to the dye in the thermal transfer recording ink is 1: 2 to 2: 1 by weight.
- the ink for thermal transfer recording of the present invention may contain additives such as organic and inorganic non-sublimable fine particles, a dispersant, an antistatic agent, an antifoaming agent, an antioxidant, and a viscosity adjusting agent as necessary. Can be added.
- the upper limit of these additives contained in the ink is usually 5% by weight or less, preferably 3% by weight or less.
- the lower limit of the additive is usually at least 0.01% by weight, preferably at least 0.5% by weight.
- the coloring material layer may be formed on the substrate by applying the thermal transfer recording ink on a substrate and drying the ink in a conventional manner.
- the base film serving as a base material include thin paper such as condenser paper and dalasin paper; and a film of a plastic having good heat resistance such as polyester, polycarbonate, polyamide, polyimide and polyaramide.
- the thickness of the base film is preferably 3 to 50 m.
- a polyethylene terephthalate film is preferred from the viewpoint of mechanical strength, solvent resistance, economy and the like.
- Thermal transfer recording inks include, for example, gravure coaters, reverse roll coaters, It may be applied to the above base film by using a rod rod, air rod rod, etc.
- the ink is preferably applied so that the thickness of the color material layer after drying is in the range of 0.1 to 5 m.
- a thermal head As a means for heating the thermal transfer recording sheet of the present invention, a thermal head, an infrared ray, a laser beam or the like is usually used. In addition, it can be used as an energizing type thermal transfer recording sheet by using an energizing heat generating film which generates heat by passing electricity through the base film itself.
- a thermal transfer recording sheet produced using a polyethylene terephthalate film is heated with a thermal head, the traveling performance of the thermal head may be insufficient.
- a lubricant such as a modified silicone compound such as an amino-modified silicone compound or a lipoxy-modified silicone compound, etc .; a lubricating heat-resistant fine particle such as silica; a surfactant;
- the thickness of the heat-resistant resin layer is preferably 0.1 to 50 m.
- thermal transfer recording normally, color printing is performed by repeating the thermal transfer recording operation on a thermal transfer recording sheet of three colors of yellow, magenta, and cyan, or four colors including black.
- the hue of the obtained image is represented by L * value, a * value, and b * value in the CIELAB space. Hues can be compared by measuring a * and b * values for images having similar color densities and L * values.
- a hue that is preferable as a cyan hue that is, an a * value of ⁇ 60 at a color density of 1.0 set at a viewing angle of 2 degrees using a D50 light source is ⁇ 60.
- the b * value is from ⁇ 50 to ⁇ 5, in particular, ⁇ 45 to ⁇ 10, inclusive.
- the a * value measured at a viewing angle of 2 degrees using a D50 light source at a viewing angle of 1 to 55 is less than or equal to 125, and the b * value is greater than or equal to 45.
- the following are defined as 1, and those out of the range of 2 above, but with an a * value of 160 or more and 20 or less and a b * value of 150 or more and 15 or less are defined as ⁇ .
- (Color density) Thermal transfer recording sheet is connected to a dedicated print pack overcoat set of a digital color printer (“P-330N”, manufactured by Olympus Optical Industrial Co., Ltd.). A gradation image was recorded on paper with a digital color printer, and the color density at the highest print density of the recorded matter was measured using a spectrophotometer (“SPM-50”, manufactured by Grego Inc.).
- the ink for thermal transfer recording of (b) was coated on a polyethylene terephthalate film (6111 thickness) using a wire par and dried to form a color material layer having a dry film thickness of about 1 tm. Then, on the back of the polyethylene terephthalate film, 10 parts by weight of acrylic resin ("BR-80", manufactured by Miyoshi Rayon Co., Ltd.) and 1 weight of amino-modified silicone oil ("KF393", manufactured by Shin-Etsu Chemical Co., Ltd.) And a liquid comprising 89 parts by weight of toluene and dried, and dried to form a heat-resistant resin layer having a dry film thickness of about 1 iim, thereby producing a thermal transfer recording sheet. Table 2 shows the evaluation results of the recorded materials.
- Example 1 in place of Dye No. 1 of Table 1, dyes No. 2, No. 3, and No. 5 of Table 1 were used in the same manner as in Example 1 except that the heat-sensitive transfer recording ink and Thermal transfer recording sheets were manufactured. Table 2 shows the evaluation results. Comparative Examples 1 to 5
- Example 1 Dye A represented by the following structural formula (Dye of Example No. 2-52 of Patent Document 1) and Dye BC Patent Document 2 were used in place of Dye N 0,1 in Table 1 Example Nos. 2 to 56), Dye C (Dye 1 of Example 1 of Patent Document 3), Dye D (Dye of Example 15 of Patent Document 4), Dye E (Example 10 of Patent Document 5) In the same manner as in Example 1 except that the above dye was used, a thermal transfer recording ink and a thermal transfer recording sheet were produced. Table 2 shows the evaluation results.
- Example 1 in place of the thermal transfer recording ink of (b), 6.0 parts by weight of the dye of (a), 10 parts by weight of AS resin ("DENKA AS-S", manufactured by Denki Kagaku Kogyo), A thermal transfer recording system was prepared in the same manner as in Example 1, except that 70 parts by weight of toluene and 10 parts by weight of tetrahydrofuran were mixed, and the ink prepared by treating the mixture with an ultrasonic cleaner for 30 minutes was used. Produced When the color density and light fastness of the recorded matter were evaluated by the above methods, all were good. From the comparison between the above Examples and Comparative Examples, the dye of the present invention is considered to have practically sufficient transfer sensitivity, and secures a color density of 1.2 or more. It is excellent. " Accordingly, according to the present invention, it is possible to provide a dye which is totally excellent in terms of hue, color density and light fastness. Industrial applicability
- the dye for thermal transfer recording has excellent overall performance in all the properties required, and has high sensitivity, high recording density, clear color tone of recorded matter, and high stability.
- a high thermal transfer recording dye and a thermal transfer recording ink and a thermal transfer recording sheet using the same.
- the disclosure of the specification of the present invention is based on the contents of the entire specification of Japanese Patent Application No. 2003-142911 (filed with the Japan Patent Office on May 21, 2003), which is the basis of the priority claim of the present application. It is incorporated here by reference.
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- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Thermal Transfer Or Thermal Recording In General (AREA)
Description
Claims
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2003-142911 | 2003-05-21 | ||
| JP2003142911A JP3896990B2 (ja) | 2003-05-21 | 2003-05-21 | 感熱転写記録用インドアニリン系色素、並びにそれを用いた感熱転写記録用インク及び感熱転写記録用シート |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| WO2004103717A1 true WO2004103717A1 (ja) | 2004-12-02 |
Family
ID=33475104
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PCT/JP2004/007288 Ceased WO2004103717A1 (ja) | 2003-05-21 | 2004-05-21 | 感熱転写記録用インドアニリン系色素、並びにそれを用いた感熱転写記録用インク及び感熱転写記録用シート |
Country Status (2)
| Country | Link |
|---|---|
| JP (1) | JP3896990B2 (ja) |
| WO (1) | WO2004103717A1 (ja) |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH02219693A (ja) * | 1989-02-22 | 1990-09-03 | Mitsubishi Kasei Corp | 感熱転写シート及び感熱転写シート用インキ組成物 |
| JPH058562A (ja) * | 1991-07-05 | 1993-01-19 | Mitsui Toatsu Chem Inc | 感熱昇華転写記録用色素、感熱転写用インキ組成物およ び熱転写シート |
| JPH05131765A (ja) * | 1991-11-14 | 1993-05-28 | Dainippon Printing Co Ltd | 熱転写シート |
| JPH09100417A (ja) * | 1995-10-03 | 1997-04-15 | Mitsubishi Chem Corp | 感熱転写用インドアニリン系色素及びそれを用いた感熱転写シート |
-
2003
- 2003-05-21 JP JP2003142911A patent/JP3896990B2/ja not_active Expired - Fee Related
-
2004
- 2004-05-21 WO PCT/JP2004/007288 patent/WO2004103717A1/ja not_active Ceased
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH02219693A (ja) * | 1989-02-22 | 1990-09-03 | Mitsubishi Kasei Corp | 感熱転写シート及び感熱転写シート用インキ組成物 |
| JPH058562A (ja) * | 1991-07-05 | 1993-01-19 | Mitsui Toatsu Chem Inc | 感熱昇華転写記録用色素、感熱転写用インキ組成物およ び熱転写シート |
| JPH05131765A (ja) * | 1991-11-14 | 1993-05-28 | Dainippon Printing Co Ltd | 熱転写シート |
| JPH09100417A (ja) * | 1995-10-03 | 1997-04-15 | Mitsubishi Chem Corp | 感熱転写用インドアニリン系色素及びそれを用いた感熱転写シート |
Also Published As
| Publication number | Publication date |
|---|---|
| JP3896990B2 (ja) | 2007-03-22 |
| JP2004345147A (ja) | 2004-12-09 |
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