JPS58224792A - Transfer type heat-sensitive recording meterial - Google Patents

Abstract

PURPOSE:To obtain a transfer type heat-sensitive recording material for heat- sensitive facsimile, heat-sensitive printer, etc., having excellent color density and sensitivity, by providing a heat-meltable transfer layer containing a colorant and a specific heat-meltable substance of phenylene or naphthalene series. CONSTITUTION:A coating liquid, consisting of a colorant (prefereably an oily dye), one or more of heat-meltable substances preferably having a melting point of 50-120 deg.C of formula I or II [wherein R1 is an alkyl or aralkyl, R2 is an alkyl (carbonyl), aralkyl, or arylcarbonyl, and Y is an alkyl, alkoxy, aralkyl, phenyl, or halogen] (e.g., 2-phenethyloxybiphenyl or 2-benzyloxynaphthalene) a binder (e.g., PVA, usually), and a paraffin wax, is prepared and applied on a support (e.g., paper) to obtain an objective recording material.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a transfer type heat-sensitive recording material, and in particular, to a color-forming material. This invention relates to an improved transfer type heat-sensitive recording material.

In recent years, thermal facsimile machines, thermal printers, and thermal recorders, all of which use thermal recording materials, have many features such as not emitting noise during recording and are easy to handle, so they have been used in various information recording devices. It is widely used in However, with conventional thermal recording methods, areas other than the printed lines develop color when heat is applied again after recording, and the disadvantage is that they can be easily tampered with after printing. had.

In order to overcome the drawbacks of such conventional single-layer heat-sensitive recording materials, a transfer-type heat-sensitive recording system has been proposed.

For example, JP Sho J/-λ1311, JP Sho t7-λ, 2
i3t, etc., the heat-sensitive λ component is printed on separate sheets, and the entire coating layer is printed on all machines, according to Japanese Patent Publication Shoj/-U, 371.
In No. 1, colored dyes and pigments were applied to a sound-sensitive heat-sensitive transfer layer, and printing was performed by combining the heat-sensitive transfer layer and plain paper.
4'yo? 31%, JP-A-II-Za-737 and JP-Ko-Jl-Kotataguta, etc., make the thermal transfer layer 1 with waxes or low molecular weight resins, melt or disperse color dyes in it, and then print on plain paper. In addition, Japanese Patent Application Laid-Open No. 1111-01111 uses color-forming substances and
It is described that printing is performed by adhering a heat-sensitive transfer layer containing a phenolic substance and a thermofusible substance having a melting point of +0-, -/o6c to plain paper.

However, heat-sensitive recording materials produced using these methods are insufficient in terms of color density and color sensitivity.

Therefore, one object of the present invention is to provide a transfer type heat-sensitive recording material having sufficient color density and color sensitivity. A heat-melting transfer layer containing one or more types of This was achieved by a transfer-type heat-sensitive recording material having the following characteristics.

In the above formula (1) and OD, R1 is an alkyl group or an aralkyl group 1 R2 is an alkyl group or an aralkyl group.

Alkylcarbonyl group or arylcarbonyl□ group tY is an alkyl group, alkoxy group, aralkyl group, phenyl group, or halogen i atom in the above general formula (1), and the alkyl group represented by Ro preferably has carbon atoms/~λO. , carbon number l~IO
Eri is preferable. The aralkyl group represented by R1 preferably has 7 to 0 carbon atoms, and particularly preferred examples include a benzyl group and a 7-enethyl group.

In the above general formula (1), the alkyl group represented by Y has a carbon number of /-/! Preferably, those having carbon number/-f are more preferable.

The alkoxy group represented by Y preferably has a carbon number of / to /j, and preferably has a carbon number of /-f. The aralkyl group represented by Y preferably has 7 to 20 carbon atoms, more preferably 7 to ///. The halogen atom represented by Y is preferably a chlorine atom, bo = general formula (in IHC, the substituent represented by Y is OR
It may be substituted at either the ortho or meta-para position relative to the □ group.

In the above general formula (2), the naphthalene ring may further contain a substituent, and examples of these preferred substituents include an alkyl group, an aralkyl group, a halogen atom, a hydroxy group, an alkoxy group, an aralkyl group, aryloxy group,
Examples include an alkylcarbonyloxy group, an arylcarbonyloxy group, an arylcarbonyloxy group, an alkoxycarbonyl group, an aryloxycarbonyl group, a carbamoyl group, and a sulfamoyl group.

The substituent represented by R2 in the above general formula (2) may further have a substituent.

Among the substituents represented by R2 in the general formula 〇 above, an alkyl group having 7 to 20 carbon atoms, and 7 to 20 carbon atoms. Aralkyl group with 2≠, alkylcarbonyl group with 2 to 0 carbon atoms, 7 to . 20 arylcarbonyl groups are preferred, particularly alkyl groups having t to t carbon atoms, aralkyl groups having 7 to 2 carbon atoms, furkylcarbonyl groups having λ to g carbon atoms, and 7 to 7 carbon atoms.
tag) An arylcarbonyl group is preferred.

Among the substituents of the naphthalene ring in the above general formula (Company), a halogen atom, a hydroxy group, an alkyl group having 1 to IO carbon atoms, an alkyloxycarbonyl group having 7 to 20 carbon atoms,
"Aryloxy/carbonyl group having 7 to 2.0 carbon atoms, 2 to 2.0 carbon atoms. 2! A substituted carbamoyl group is preferred.

It is preferable that the heat-fusifying agent represented by the above general formula (11) has a melting point of 0°C to /jO°C, and particularly has a melting point of 20°C to Preferably.

Next, specific examples of the heat-fusifying agent according to the invention will be shown, but the invention is not limited thereto.

/) Examples of general formula (1) p-t-p-phenylpenzyl ether, p-1-amylphenylbenzyl ether, p-1 soflovir benzyl-p-biphenyl ether, β-phenethyl-
p-biphenyl ether, α-7enethyl p-biphenyl ether, β-n-ptotethyethyl p-biphenyl ether, p-cyclohexylphenylbenzyl ether p-cumylphenylbenzyl ether, p-
Isopropylbenzyl-p-7 nidyl ether, lp-
Chloro 71: Ru p-isopropylbenzyl ether etc.) Example of general formula (2) 1-benzyloxynaphthalene, copenzyloxynaphthalene, 2-p-methylbenzyloxynaphthalene%
λ-p-chlorobenzyloxynaphthalene, 2-p-
Isopropylbenzyloxynaphthalene, λ-benzoyloxynaphthalene.

/-Hydroxy-cobenzo, yloxynaphthalene, λ-noenoxyacetyloxina7talene, etc. The transfer type heat-sensitive recording material according to the present invention is based on the above general formula (1).
It contains one or more types of heat-fusifying agents represented by:

The colorant according to the present invention is a fine particle of dye and pigment? Yes, you can select and use any suitable one from these.

Medium dyes are preferred in the colorants of the invention, and oil dyes are preferred.

Next, specific embodiments of the transfer type heat-sensitive recording material according to the present invention will be described. The most common form is to coat one side of a support with the heat-melting transfer layer according to the present invention to form a transfer sheet, then place an image-receiving note in close contact with the heat-melting transfer layer of this transfer sheet, and heat it with a heat-sensitive head or the like. Print it out and put it on the 1'# notebook? It's something you get.

As the support for the transfer sheet, papers such as plain paper, glassine paper, tracing paper, typewriter paper, and condenser paper, synthetic papers, and plastic films such as cellulose acetate, satin, and polyester can be used.

The heat-melting transfer layer according to the present invention may contain all of the coloring material and one or more heat-fusifying agents represented by the general formula (I)Q[l, as well as binders and additives.

As a binder, water-soluble resins such as polyvinyl alcohol, methyl cellulose, hydroxyethyl cellulose, carboxymethyl cellulose, methyl vinyl ether maleic anhydride copolymer, polyacrylic acid, gelatin, gum arabic, starch, styrene-butadiene latex, etc.
xylene resin.

Phenolic resin, coumarin resin, vinyltoluene resin,
Vinyl acrylic resin, terpene resin, and Gin oil-soluble resin can be used. It is also used as an additive to completely improve the adhesion between the transfer layer and the image-receiving sheet.

Paraffin wax, polyolefin wax, micro wax,
Fatty acid amide wax, Ceretac, Carteva wax,
Monkun wax, polyethylene wax, synthetic wax, polyolefin.

Waxes such as solid fatty acids and resins such as cellulose resin, 7-acrylic resin, and rosin-modified hismaleic acid resin can be used.

Further, this additive may be provided alone on the heat melt transfer layer as an intermediate layer between the heat melt transfer layer and the image receiving sheet.・As a support for the image receiving sheet, paper such as plain paper 1 synthetic paper, laminated paper, polyethylene, polystyrene, etc.
Resin films such as polypropylene are used.

According to the present invention, the image-receiving sheet according to the present invention makes it easy for the print transfer portion to be fixed. Waxes, rubbers, polyolefins, polyvinyl ethers, polyesters, rosin-modified phenolic resins, rosin-modified maleic acid resins, and oil-absorbing inorganic pigments such as phosphoric acid, aluminum hydroxide, finely synthesized calcium carbonate.

Zinc white, talc, calcium sulfate, calcined kaolin.

Magnesium sulfate/rum, magnesium oxide, etc. can all be contained.

Next, what is the most common manufacturing method for the recording material according to the present invention? write down First, the transfer sheet is dispersed in a colorant, a heat-fusifying agent, and a dispersant using a means such as a Pall Mill and Sand Mill, and then a binder, additives, brightener, etc. are added as necessary, and the coating is applied. It is possible to prepare a complete coating solution, apply this coating solution onto a support, and dry it. Generally, the coating amount is λ~2oV/m as solid content.
It is.

What is the heat-melting transfer layer and image receiving layer of the transfer sheet thus obtained? , either in advance or in close contact immediately before printing. Close contact Niha, super calendar, machine calendar.

There are methods such as passing it through a cross calendar, using the nip of a laminator, or simply passing it between two pressurized rubber rollers.

Example 1 will be shown below, but the present invention is not limited to this example.

Example 1 was mixed and ground overnight using a ball mill to prepare a dispersion liquid.

The particle size after milling was approximately J microns. Paraffin Wanoku Ago% Dispersion 207 was added to this dispersion to prepare a coating liquid. The coating liquid was applied on a typewriter fan paper with a basis weight of 20 fl/m at a solid content of 1of/m''.
The Nanimoto I cloth was dried and used as a transfer sheet. , 170
97m2 of high-quality paper and a transfer layer were added together using a super calender and the sheets were glued together.

This sheet is heated by facsimile using energy.
After heating and printing at J/mm, the two sheets were peeled off to obtain a blue record.

Example A dispersion liquid was prepared using λ in the same manner as in Example/. This dispersion was coated on glassine paper having a basis weight of 1.2 jf/m2, dried, and made into a round transfer sheet. It was adhered to an image-receiving sheet in the same manner as in Example 1, and printed by facsimile to obtain a blue-black record.

Patent applicant: Fuji Photo Film Co., Ltd. Procedural amendment 1, case description: 1966 Patent Application No. IO Octopus 76
No. 2, Title of the invention Transfer-type thermal recording material 3, Relationship with the case of the person making the amendment Patent applicant 4, Subject of the amendment ``Claims'' column 5 of the description Contents of the amendment [% of the specification] , t't'Claims' section is amended as shown in the attached sheet.

"Attachment" The transfer type heat-sensitive recording material R1 is characterized in that it has a heat-melting transfer layer containing a colorant and one or more heat-fusifying agents represented by the following general formula (I) t or ■). Aralkyl group t and R2 represent an alkyl group, aralkyl group, alkylcarbonyl group or carbonyl group, and Y represents an alkyl group, an alkoxy group, an aralkyl group, a phenyl group or a halogen atom.

Claims (1)

[Claims] Transfer-type heat-sensitive recording material R1U characterized by containing a heat-melting transfer layer containing a colorant and one or more heat-fusifying agents represented by the following general formula (I) or (to). s R2 represents an alkyl group, an aralkyl group, an alkylcarbonyl group, or an arylcarbonyl fi', and Y represents an alkyl group, an alkoxy group, an aralkyl group, a phenyl group, or a halogen atom.