CN101031435A - Thermally sensitive recording medium - Google Patents
Thermally sensitive recording medium Download PDFInfo
- Publication number
- CN101031435A CN101031435A CN 200580032571 CN200580032571A CN101031435A CN 101031435 A CN101031435 A CN 101031435A CN 200580032571 CN200580032571 CN 200580032571 CN 200580032571 A CN200580032571 A CN 200580032571A CN 101031435 A CN101031435 A CN 101031435A
- Authority
- CN
- China
- Prior art keywords
- pigment
- layer
- parts
- thermosensitive recording
- coating
- 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.)
- Granted
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Images
Landscapes
- Heat Sensitive Colour Forming Recording (AREA)
Abstract
Disclosed is a thermally sensitive recording medium having one or more layers on a supporting body including a thermally sensitive recording layer containing at least a colorless or pale colored electron-donating leuco dye and an electron-accepting developer. This thermally sensitive recording medium has high gloss in the printing area by containing a pigment with an aspect ratio of not less than 30 in at least one layer on the supporting body.
Description
Technical field
It the present invention relates to the use of the thermosensitive recording body of the chromogenic reaction of basic colorless dye and color developing agent, the in particular to excellent thermosensitive recording body of developing sensitivity, image quality.
Background technique
Thermosensitive recording body with heat sensitive recording layer is widely used, wherein the electronics acceptance color developing agent (hereinafter referred to as color developing agent) that the heat sensitive recording layer is reacted and developed the color when usually being heated with colourless or light giving property of electronics leuco dye (hereinafter referred to as dyestuff) and with dyestuff is main component.When being recorded on the thermosensitive recording body, the thermal printer etc. of built-in thermal head (ヘ Star De) is used.This thermal photography mode does not have noise, without the fixed, Maintenance free that develops when having the feature that record compared with other recording modes applied at present；Instrument is relatively cheap, minimizes；Gained colour developing is very distinct, facsimile machine, the terminal printer of computer, automatic machine, measurement recorder, outdoor application portable terminal device etc. in be widely applied.It is also used to require the fields such as the coupons paper of high keeping quality other than the output paper of above-mentioned various instruments as the purposes of this thermosensitive recording body.Along with the diversification of such use, recording device also diversification, high performance (high speed, miniaturization etc.) itself, therefore it is required that thermosensitive recording body has higher developing sensitivity, the record image of high image quality all can be obtained into any field of high lettering concentration in low lettering concentration.
The known developing sensitivity for improving thermosensitive recording body, the method for recording image quality are usually that the flatness for the priming coat being arranged between thermosensitive recording body surface or support and heat sensitive recording layer is improved using supercalender etc..
It is described in patent document 1: the first middle layer of stacked above one another, the second middle layer between support and heat-sensitive color layer, and the density of Wang Yan formula smoothness 700 seconds for making the first middle layer or more, the second middle layer is 0.1 hereinafter, for providing site reproducibility (image quality) excellent thermal recording medium.It is described in patent document 2: containing flakey silica in the middle layer being arranged between support and heat sensitive recording layer.But when improving the flatness of thermosensitive recording body using supercalender etc., although the record image of high image quality can be obtained, due to calender pressure and make constitute thermosensitive recording body layer porosity (thermal insulation) decline.Therefore, the thermal efficiency in heat sensitive recording layer reduces, and is unable to get high developing sensitivity.Moreover, the requirement level in recent years to image quality is higher and higher, the flatness of thermosensitive recording body surface or priming coat is only improved, then is unable to get the image quality that can satisfy requirement.
In addition, due to the diversification of thermosensitive recording body purposes, the use for carrying out the common printed thermosensitive recording bodies such as hectographic printing to fix informations such as trade mark or gage lines in advance also increases, it is desirable that develops the thermosensitive recording body with the high glaze of common printed adaptive, particularly high printing part gloss adaptive.
The technology for containing aluminium hydroxide in the layered system as protective layer is disclosed in patent document 3, for improving the gloss of common printed adaptive and thermosensitive recording body；The technology of setting protective layer is disclosed in patent document 4, for obtaining the thermosensitive recording body of high glaze.It is slack-off due to conducting heat in heat sensitive recording layer but when setting protective layer, other than there is the deficiencies of sensitivity decline, print speed decline or increase of lettering energy, due also to increasing one layer of coating and leading to the problem of manufacturing cost rising.
Although there are mix the high silica etc. of oil absorption in a kind of heat sensitive recording layer, the dyestuff and color developing agent for making dissolution are fixed, for obtaining the technology of high developing sensitivity, but when mixing silica etc., since the glossiness of thermosensitive recording body declines and leads to the problem of and cannot get high print gloss.As described above, status is to cannot get that developing sensitivity is high, the gloss of printing part high thermosensitive recording body when being printed using hectographic printing etc. is common printed.
And, since the basic colorless dye and color developing agent that contain in thermosensitive recording body are soluble in various solvents, the problem of when the thermosensitive recording body touches ink, the adhesive of water-based ink pen or oil-based ink pen etc., the chemicals such as plasticizer adhere on the image, reduce at this time there is developing concentration.It discloses in patent document 5 and patent document 6 and is arranged on thermosensitive recording body with the technology of pigment and resin protective layer as main component, for overcoming disadvantages mentioned above.
But in recent years, the purposes of thermosensitive recording body be expanded to the coupons such as various tickets are used, receipt is used, label is used, the ATM of bank is used, inspection needle uses of coal gas or electricity, vehicle and horse certificate with etc. on the way, therefore start to require thermosensitive recording body that there is the stringent characteristic that existing issue is not present.When being used for such use, often in outdoor application, need to have be resistant to the moisture such as rainwater and moisture, daylight, heat the interior condition of high temperature grade previous harsh environment of ratio under the quality parameter of protective layer that uses.But; if above-mentioned protective layer is arranged; although then stability is improved; but other than there is the deficiencies of above-mentioned sensitivity decline, print speed decline or printing energy increase; also because the silica etc. contained in protective layer generates big friction between pigment and magnetic head, and lead to the problem of head wear when being used continuously for a long time.
[patent document 1] Japanese Unexamined Patent Publication 2000-108518
[patent document 2] Japanese Unexamined Patent Publication 2002-137542
[patent document 3] Japanese Patent No. 2786912
[patent document 4] Japanese Unexamined Patent Publication 09-156222
[patent document 5] Japanese Unexamined Patent Application 48-30437
[patent document 6] Japanese Unexamined Patent Application 48-31958
Summary of the invention
Therefore, the present invention is to provide the excellent thermosensitive recording body of developing sensitivity, image quality as project.
The inventors of the present invention's further investigation, as a result, it has been found that: in the thermosensitive recording body formed by the single-layer or multi-layer on support at least provided with heat sensitive recording layer, the heat sensitive recording layer is using colourless or light giving property of electronics leuco dye and electronics acceptance color developing agent as main component, by can solve the above subject containing draw ratio in at least one layer being set on support for 30 or more pigment, so as to complete the present invention.It was found that having played excellent effect using kaolin especially by the pigment that draw ratio is 30 or more.
Contain the pigment that draw ratio is 30 or more by the most surface layer in thermosensitive recording body, while solving the above subject, also shows high glaze and common printed adaptive, particularly high printing part gloss adaptive.Especially by the pigment for being 30 or more containing draw ratio in protective layer, the excellent effect of storage stability, head wear of record image area and blank parts can be further played.
Brief description
Fig. 1 is the explanatory diagram of draw ratio of the invention, and draw ratio is indicated with diameter divided by the value of thickness.
The best mode to carry out an invention
Thermosensitive recording body of the invention, it is characterised in that: the pigment for being 30 or more containing draw ratio in at least one layer being set on support.In the present invention, the draw ratio of pigment refers to that with electronics microscope photographing powder, to 100 particles extracted out at random, the value for calculating using the diameter of formula 1 as shown in Figure 1 and thickness and asking its average, the value of draw ratio is bigger, shows that the flat degree of pigment is bigger.
Draw ratio=diameter/thickness (formula 1)
The pigment that draw ratio used in the present invention is 30 or more is especially flat compared with the pigment for being typically used as papermaking material, and the coating containing the pigment has excellent covering property, surface smoothness, glossiness.The reason is presumed as follows.Pigment weight needed for coating same area, weight used in the big pigment of draw ratio are few.For example, comparing the minimum necessary amounts of the pigment A that draw ratio is 20 and pigment B, theoretical paint B that draw ratio is 40 for the half of the minimum necessary amounts of pigment A.Therefore, the high coating of covering property can be formed with few coating weight.In addition, since the big pigment thickness of draw ratio is thin, so the bumps of coating surface become smaller.Therefore, excellent surface smoothness and glossiness are shown.Coating containing the big pigment of draw ratio, when coating are tended to be upwardly oriented flat horizontal surface, are easy to show covering property, surface smoothness, glossiness.Above-mentioned tendency is more significant when knife type coater etc. is with the coating method for shearing (shear).Also, when being upwardly oriented flat horizontal surface, it may also suppress pigment and permeated to support or coat inside, to improve covering property, surface smoothness, glossiness.As described above, by thermosensitive recording body containing draw ratio big pigment and show good surface smoothness, it is possible to will assign smooth target supercalender processing etc. processing pressure control in bottom line.As a result, it is possible to obtain porous and excellent surface smoothness thermosensitive recording body.Below in relation to the thermosensitive recording body of the invention for the pigment for being 30 or more containing draw ratio, just it is illustrated in protective layer, heat sensitive recording layer, priming coat containing the case where above-mentioned pigment.
Firstly, in protective layer containing draw ratio be 30 or more pigment the case where be described.In the present invention, in the protective layer as the most surface layer of thermosensitive recording body containing draw ratio be 30 or more pigment when, can use the coating weight fewer than previous protective layer coat heat sensitive recording layer.It should be noted that; the composition of the thermosensitive recording body of the pigment described herein for being 30 or more containing draw ratio in the protective layer as most surface layer are as follows: there is heat sensitive recording layer/protective layer, priming coat/heat sensitive recording layer/protective layer combination on support, the pigment that draw ratio is 30 or more can also be added into the layer other than protective layer.
By the way that the protective layer for the pigment for being 30 or more containing draw ratio is arranged, the storage stability of image section and blank parts can be improved, and the decline of the thermal conductivity for heat sensitive recording layer can be inhibited, therefore available good developing sensitivity and record image.By the pigment for being 30 or more containing draw ratio, it is improved the flatness of coating surface, glossiness.Therefore, it is handled by low pressure supercalendering etc., the slickness as target can be obtained, as a result, it is possible to obtain good developing sensitivity and record image.
When the average diameter for the pigment that the draw ratio contained in protective layer is 30 or more is greater than 4 μm; pigment is exposed to coating surface, therefore generates surface smoothness reduction, records the problems such as increased friction (head wear) of image quality decline, glossiness reduction, the decline of printing part gloss and thermal head.Therefore, it is desirable to draw ratio be 30 or more pigment partial size at 4 μm or less.When the oil absorption for the pigment that draw ratio is 30 or more is 30~100ml/100g, it is common printed in ink meat and printing part gloss become good.When oil absorption is 30ml/100g or less, common printed ink is not easy to be absorbed, so going wrong in terms of ink meat；When oil absorption is 100ml/100g or more, common printed ink is by taken in excess, so cannot have the thermosensitive recording body of high printing part gloss.
When the draw ratio of the pigment contained in protective layer is 100 or more, protective layer becomes close, occur the ink in common printed the problems such as meat or ink setting reduce, developing sensitivity reduces.Therefore, the more preferable draw ratio of pigment contained in heat sensitive recording layer in the present invention is 30~100, further preferably 30~75.
The type of inorganic pigment used in the present invention can be enumerated such as: kaolin, (sintering) kaolin, calcium carbonate, aluminium oxide, titanium oxide, magnesium carbonate, alumina silicate, magnesium silicate, calcium silicates, aluminium hydroxide, diatomite, talcum powder, but it is not limited to this, the pigment that draw ratio is 30 or more in above-mentioned inorganic pigment can be used.Inorganic pigment of the invention has significant feature in shape, and the proportion of lamellar pigment is more compared with usually used pigment, and selection is using the pigment with this shape, or uses the pigment for belonging to range given to this invention by classification.
The inorganic pigment that draw ratio is 30 or more is preferably used alone, to play effect using its special shape, when total mixing number relative to 100 parts by weight pigment, when the inorganic pigment that draw ratio is 30 or more is 50 parts by weight or more, is more preferably 80 parts by weight or more, it can be used in combination with various pigment of the draw ratio less than 30.
The inorganic pigment for being 30 or more as draw ratio, from the aspect of resistance to head wear, preferably aluminium hydroxide, silica, kaolin.Wherein, from the aspect of image quality, sensitivity and common printed adaptive, economy, kaolin is suitble to.This kaolin can be obtained by will be classified through the special kaolin for crushing leafing.
In the protective layer of thermosensitive recording body of the invention, it can be enumerated as adhesive: the fully saponified polyvinyl alcohol that the degree of polymerization is 200~1900, partly-hydrolysed polyvinyl alcohol, acetoacetylated polyvinyl alcohol, carboxy-modified polyvinyl alcohol, amide modifications polyvinyl alcohol, tristyrylphenol ethoxylate of sulfonic acid modified polyvinyl alcohol, butyral modified polyvinylalcohol, olefin-modified polyvinyl alcohol, nitrile modified polyvinylalcohol, pyrrolidone modified polyvinyl alcohol, organosilicon-modified polyvinyl, other modified polyvinylalcohols, hydroxyethyl cellulose, methylcellulose, ethyl cellulose, carboxymethyl cellulose, styrene-maleic anhydride copolymer, styrene-butadiene copolymer and ethyl cellulose, the cellulose derivatives such as acetylcellulose, casein, Arabic gum, oxidized starch, etherification starch, dialdehyde starch, esterification starch, polyvinyl chloride, Polyvinyl acetate, polyacrylamide, polyacrylate, polyvinyl butyral, polystyrene and their copolymer, polyamide, silicone resin, Petropols, terpene resin, ketone resin, coumarone (Network マ ロ) resin etc..Above-mentioned polymer substance is in addition to being dissolved in water, alcohol, ketone, esters, in hydrocarbon equal solvent other than use, can also emulsify in water or other media or use in the state of being dispersed into paste, according to requiring quality that can also be used in combination.
Draw ratio used in the present invention is in 30 or more inorganic pigment and the content of adhesive, and usually relative to 100 parts by weight inorganic pigments, adhesive is calculated as 30~300 parts by weight or so with solid component.
The formation of the protective layer can be by using common coating machine, with 1~5g/m2The coating weight of left and right is coated on heat sensitive recording layer and is easy to carry out.Middle layer can be set between heat sensitive recording layer and protective layer, form protective layer in the middle layer.Any known coating method such as air knife method, scraper method, intagliotype, rolling method, curtain formula method can be used in coating method.
Secondly, in heat sensitive recording layer containing draw ratio be 30 or more pigment the case where be described.In the present invention; in the heat sensitive recording layer of thermosensitive recording body containing draw ratio be 30 or more pigment when; the composition of thermosensitive recording body are as follows: the combination on support with priming coat/heat sensitive recording layer/protective layer, priming coat/heat sensitive recording layer, heat sensitive recording layer/protective layer, only heat sensitive recording layer, it can be to add the pigment that draw ratio is 30 or more in the layer other than heat sensitive recording layer.
In the present invention; when in the heat sensitive recording layer in thermosensitive recording body containing draw ratio be 30 or more pigment when; with with it is above-mentioned in protective layer containing draw ratio be 30 or more pigment when identical reason, compared with when using the pigment used in the past, covering property, flatness increase.
Therefore, when the composition of heat sensitive recording layer are as follows: when being equipped with priming coat/heat sensitive recording layer, only heat sensitive recording layer on support, as when the heat sensitive recording layer for the pigment that draw ratio is 30 or more is contained on the most surface layer of thermosensitive recording body, the heat of thermal head from thermal printer uniformly transfers, show excellent developing sensitivity, when being printed with hectographic printing etc. is common printed, the high thermosensitive recording body of the gloss of printing part can be obtained.
When the composition of thermosensitive recording body are as follows: when being equipped with priming coat/heat sensitive recording layer/protective layer, heat sensitive recording layer/protective layer on support; i.e. when protective layer is arranged on the heat sensitive recording layer for the pigment for being 30 or more containing draw ratio; the excellent flatness of heat sensitive recording layer also influences the flatness for the protective layer being disposed thereon, therefore good developing sensitivity can be obtained and record the image quality of image.
In thermosensitive recording body of the invention, pigment that the draw ratio that contains in heat sensitive recording layer is 30 or more and can pigment wish identical as pigment used in above-mentioned protective layer.The inorganic pigment that draw ratio is 30 or more is preferably used alone, to play effect using its special shape, when total mixing number relative to 100 parts by weight pigment, when the inorganic pigment that draw ratio is 30 or more is 50 parts by weight or more, is more preferably 80 parts by weight or more, it can be used in combination with various pigment of the draw ratio less than 30.
In the present invention, the combined amount for the pigment that the draw ratio that contains in heat sensitive recording layer is 30 or more, by based on the weight rate of heat sensitive recording layer, preferably 10%~70%, more preferably 10%~50%.If combined amount is few, flatness, glossiness are lower；If combined amount is more, the blending ratio of dyestuff and color developing agent tails off, so being difficult to obtain good developing sensitivity, record image, while when heat sensitive recording layer is most surface layer, resistance to head wear is reduced.
Adhesive used in the heat sensitive recording layer of thermosensitive recording body of the invention, it is desirable to suitably be selected from adhesive used in above-mentioned protective layer.
In the present invention; in the range of not hindering effect desired to the above subject; 4,4 '-butylidenes (6- tert-butyl -3- methylphenol), 2,2 '-di-t-butyls -5 can also be added; 5 '-dimethyl -4; 4 '-sulfonyldiphenols, 1,1,3- tri- (2- methyl -4- hydroxyl -5- cyclohexyl phenyl) butane, 1; the image stabilizing agent as the oil resistivity effect for indicating record image etc. such as 1,3- tri- (2- methyl -4- hydroxyl -5- tert-butyl-phenyl) butane.
In addition it is possible to use benzophenone series or the ultraviolet absorbing agent of triazole system, dispersing agent, defoaming agent, antioxidant, fluorescent dye etc..
Giving property of electronics leuco dye used in the present invention is not particularly limited, can be used well known to previous pressure-sensitive or electrothermal sensitive recording paper field, preferably triphenylmenthane based compound, fluorane based compound, fluorenes system, divinyl based compound etc..The specific example of representative colourless or light colored dyes (dyestuff former) is given below.These dyestuff formers can be independent or a variety of be used in mixed way.
<triphenyl methane system leuco dye>
3,3- bis- (to dimethylaminophenyl) -6- dimethylamino phthalides (phthalide) [alias crystal violet lactones]
3,3- bis- (to dimethylaminophenyl) phthalides [alias peacock green lactones]
<fluorane system leuco dye>
3- diethylamino -6- methyl fluoran
3- diethylamino -6- methyl -7- anilino fluorane
3- diethylamino -6- methyl -7- (adjacent, to accelerine base) fluorane
3- diethylamino -6- methyl -7- chloro fluorane
3- diethylamino -6- methyl -7- (3-Aminotrifluorotoluene base) fluorane
3- diethylamino -6- methyl -7- (o-chloraniline base) fluorane
3- diethylamino -6- methyl -7- (parachloroanilinum base) fluorane
3- diethylamino -6- methyl -7- (adjacent fluoroanilino) fluorane
3- diethylamino -6- methyl -7- (m-toluidine base) fluorane
3- diethylamino -6- methyl -7- n-octyl anilino fluorane
3- diethylamino -6- methyl -7- n-octyl amino fluorane
3- diethylamino -6- methyl -7- benzylamino fluorane
3- diethylamino -6- methyl -7- dibenzyl amino fluorane
The chloro- 7- methyl fluoran of 3- diethylamino -6-
The chloro- 7- anilino fluorane of 3- diethylamino -6-
The chloro- 7- open-chain crown ether base fluorane of 3- diethylamino -6-
3- diethylamino -6- ethoxyethyl group -7- anilino fluorane
3- diethylamino -7- methyl fluoran
3- diethylamino -7- chloro fluorane
3- diethylamino -7- (3-Aminotrifluorotoluene base) fluorane
3- diethylamino -7- (o-chloraniline base) fluorane
3- diethylamino -7- (parachloroanilinum base) fluorane
3- diethylamino -7- (adjacent fluoroanilino) fluorane
3- diethylamino-benzo [a] fluorane
3- diethylamino-benzo [c] fluorane
3- dibutylamino -6- methyl fluoran
3- dibutylamino -6- methyl -7- anilino fluorane
3- dibutylamino -6- methyl -7- (adjacent, to accelerine base) fluorane
3- dibutylamino -6- methyl -7- (o-chloraniline base) fluorane
3- dibutylamino -6- methyl -7- (parachloroanilinum base) fluorane
3- dibutylamino -6- methyl -7- (adjacent fluoroanilino) fluorane
3- dibutylamino -6- methyl -7- (3-Aminotrifluorotoluene base) fluorane
3- dibutylamino -6- methyl-chloro fluorane
3- dibutylamino -6- ethoxyethyl group -7- anilino fluorane
The chloro- 7- anilino fluorane of 3- dibutylamino -6-
3- dibutylamino -6- methyl -7- open-chain crown ether base fluorane
3- dibutylamino -7- (o-chloraniline base) fluorane
3- dibutylamino -7- (adjacent fluoroanilino) fluorane
Bis- n-pentyl amino -6- methyl -7- anilino fluorane of 3-
3- bis- n-pentyl amino -6- methyl -7- (parachloroanilinum base) fluorane
3- bis- n-pentyl amino -7- (3-Aminotrifluorotoluene base) fluorane
The bis- chloro- 7- anilino fluorane of n-pentyl amino -6- of 3-
3- bis- n-pentyl amino -7- (parachloroanilinum base) fluorane
3- pyrrolidinyl -6- methyl -7- anilino fluorane
3- piperidino -6- methyl -7- anilino fluorane
3- (N- methyl-N-propylamino) -6- methyl -7- anilino fluorane
3- (N- methyl-N-cyclohexyl amino) -6- methyl -7- anilino fluorane
3- (N- ethyl-N- Cyclohexylamino) -6- methyl -7- anilino fluorane
3- (N- ethyl-N- dimethylbenzene amino (xylamino)) -6- methyl -7- (parachloroanilinum base) fluorane
3- (N- ethyl-p-totuidine base) -6- methyl -7- anilino fluorane
3- (N- ethyl-M-isoamylamino) -6- methyl -7- anilino fluorane
The chloro- 7- anilino fluorane of 3- (N- ethyl-M-isoamylamino) -6-
3- (N- ethyl-N- tetrahydrofurfuryl amino) -6- methyl -7- anilino fluorane
3- (N- ethyl-N- isobutylamino) -6- methyl -7- anilino fluorane
3- (N- ethyl-N- ethoxycarbonyl propyl amino) -6- methyl -7- anilino fluorane
3- Cyclohexylamino -6- chloro fluorane
2- (4- oxa- hexyl) -3- dimethylamino -6- methyl -7- anilino fluorane
2- (4- oxa- hexyl) -3- diethylamino -6- methyl -7- anilino fluorane
2- (4- oxa- hexyl) -3- dipropylamino -6- methyl -7- anilino fluorane
P- (to dimethylaminophenyl) the aminobenzene amido fluorane of 2- methyl -6-
P- (to dimethylaminophenyl) the aminobenzene amido fluorane of 2- methoxyl group -6-
P- (to phenylaminophenyl) the aminobenzene amido fluorane of the chloro- 3- methyl -6- of 2-
P- (to dimethylaminophenyl) the aminobenzene amido fluorane of the chloro- 6- of 2-
P- (to diethylamino phenyl) the aminobenzene amido fluorane of 2- nitro -6-
P- (to diethylamino phenyl) the aminobenzene amido fluorane of 2- amino -6-
P- (to diethylamino phenyl) the aminobenzene amido fluorane of 2- diethylamino -6-
P- (to phenylaminophenyl) the aminobenzene amido fluorane of 2- phenyl -6- methyl -6-
P- (to phenylaminophenyl) the aminobenzene amido fluorane of 2- benzyl -6-
P- (to phenylaminophenyl) the aminobenzene amido fluorane of 2- hydroxyl -6-
P- (to dimethylaminophenyl) the aminobenzene amido fluorane of 3- methyl -6-
P- (to diethylamino phenyl) the aminobenzene amido fluorane of 3- diethylamino -6-
P- (to Dibutvlaminophenyl) the aminobenzene amido fluorane of 3- diethylamino -6-
2,4- dimethyl -6- [(4- dimethylamino) anilino-] fluorane
<fluorenes system leuco dye>
3,6,6 '-three (dimethylamino) spiral shells [9,3 '-phthalide of fluorenes -]
3,6,6 '-three (diethylamino) spiral shells [9,3 '-phthalide of fluorenes -]
<divinyl base system leuco dye>
3,3- bis--[2- (to dimethylaminophenyl) -2- (p-methoxyphenyl) vinyl] -4,5,6,7- tetrabromo phthalides
3,3- bis--[2- (to dimethylaminophenyl) -2- (p-methoxyphenyl) vinyl] -4,5,6,7- Rabcides
3,3- bis--[1,1- bis- (4- pyrrolidinyl phenyl) ethylene -2- bases] -4,5,6,7- tetrabromo phthalides
3,3- bis--[1- (4- methoxyphenyl) -1- (4- pyrrolidinyl phenyl) ethylene -2- bases] -4,5,6,7- Rabcides
<other>
3- (4- diethylamino -2- ethoxyl phenenyl) -3- (1- Ethyl-2-Methyl indol-3-yl) -4- azepine phthalide
3- (4- diethylamino -2- ethoxyl phenenyl) -3- (1- octyl -2 methyl indole -3- base) -4- azepine phthalide
3- (4- Cyclohexylethylamino -2- methoxyphenyl) -3- (1- Ethyl-2-Methyl indol-3-yl) -4- azepine phthalide
3,3- bis- (1- Ethyl-2-Methyl indol-3-yl) phthalides
3,6- bis- (diethylamino) fluorane-γ-(3 '-nitro) anilino- lactams
3,6- bis- (diethylamino) fluorane-γ-(4 '-nitro) anilino- lactams
1,1- bis--[2 ', 2 ', 2 ", 2 "-four-(to dimethylaminophenyl)-vinyl] -2,2- dintrile ethane
1,1- bis--[2 ', 2 ', 2 ", 2 "-four-(to dimethylaminophenyl)-vinyl] -2- β-naphthoyl ethane
1,1- bis--[2 ', 2 ', 2 ", 2 "-four-(to dimethylaminophenyl)-vinyl] -2,2- diacetyl ethane
Double-[2,2,2 ', 2 '-four-(to dimethylaminophenyl)-vinyl]-methylmalonic acid dimethyl ester
Electronics acceptance color developing agent used in the present invention is not particularly limited, can be used, can enumerate such as: atlapulgite, attapulgite, colloidal silicon dioxide, alumina silicate inorganic acidic materials well known to previous pressure-sensitive or electrothermal sensitive recording paper field；4, 4 '-isopropylidenediphenols, 1, bis- (4- hydroxyphenyl) hexamethylenes of 1-, 2, bis- (4- the hydroxyphenyl) -4- methylpentanes of 2-, 4, 4 '-dihydroxy diphenyl sulfides, hydroquinone monobenzyl ether, 4-HBA benzyl ester, 4, 4 '-dihydroxydiphenylsulisomers, 2, 4 '-dihydroxydiphenylsulisomers, 4- hydroxyl -4 '-isopropoxy diphenyl sulphone (DPS), 4- hydroxyl -4 '-positive propoxy diphenyl sulphone (DPS), bis- (3- allyl -4- hydroxyphenyl) sulfones, 4- hydroxyl -4 '-methyldiphenyl sulfone, 4- hydroxyphenyl -4 '-benzyloxy-phenyl sulfone, 3, 4- dihydroxyphenyl -4 '-methyl phenyl sulfone, the aminobenzene sulfonamide derivative that Japanese Unexamined Patent Publication 8-59603 bulletin is recorded, bis- (4- hydroxyphenyl thio base oxethyl) methane, 1, (the 4- hydroxy benzenes sulfenyl of 5- bis- ) -3- oxapentane, bis- (p-hydroxyphenyl) butyl acetates, bis- (p-hydroxyphenyl) methyl acetates, 1, bis- (4- the hydroxyphenyl) -1- diphenylphosphino ethanes of 1-, 1, bis- [Alpha-Methyl-α-(4 '-hydroxyphenyl) ethyl] benzene of 4-, 1, bis- [Alpha-Methyl-α-(4 '-hydroxyphenyl) ethyl] benzene of 3-, two (4- hydroxy-3-methyl phenyl) thioethers, 2, 2 '-thiobis (3- tert-octyl phenol), 2, 2 '-thiobis (4- tert-octyl phenol), the phenoloids such as the diphenyl sulphone (DPS) cross-linking type compound of International Publication WO97/16420 record, the compound that International Publication WO02/081229 or Japanese Unexamined Patent Publication 2002-301873 bulletin are recorded, and N, the thiourea compounds such as-two m-chloro phenylthiourea of N ', it is right Chlorobenzoic acid, gallic acid stearoyl ester, bis- [4- (just pungent oxygen carbonyl amino) zinc salicylate] dihydrates, 4- [2- (to methoxy phenoxy) ethyoxyl] salicylic acid, 4- [3- (tolysulfonyl) propoxyl group] salicylic acid, the zinc of the aromatic carboxylic acids and these aromatic carboxylic acids such as 5- [p- (2- is to methoxybenzene oxygen ethyoxyl) cumenyl] salicylic acid, magnesium, aluminium, calcium, titanium, manganese, tin, the multivalent metal salts such as nickel, and the antipyrine complex compound of zinc thiocyanide, the compound zinc salt etc. of PARA FORMALDEHYDE PRILLS(91,95) yl benzoic acid and other aromatic carboxylic acids.Above-mentioned color developing agent can be independent or a variety of be used in mixed way.The diphenyl sulphone (DPS) cross-linking type compound of International Publication WO97/16420 record can be used as Japanese Cao and obtain up to (strain) trade name D-90 processed.The compound of International Publication WO02/081229 equal records can be used as Japanese Cao and obtain up to (strain) trade name D-100 processed.Further, it is also possible to the metal chelates color composition such as higher fatty acid metal double salt or multivalent hydroxyl group aromatic compounds containing the record of Japanese Unexamined Patent Publication 10-258577 bulletin.
Known sensitizer can be used in sensitizer used in thermosensitive recording body of the invention.Related sensitizer can enumerate: the fatty acid amides such as stearmide, palmitamide；Ethylene bisamides, montanic acid wax, polyethylene wax, 1, 2- bis--(3- methylphenoxy) ethane, to benzylbiphenyl, β-benzyloxy naphthalene, 4- xenyl-p-tolyl ether, between terphenyl, 1, 2- biphenoxyl ethane, dibenzyl oxalate, oxalic acid two (p-chlorobenzyl) ester, oxalic acid two (to methylbenzyl) ester, terephthalic acid (TPA) dibenzyl ester, to benzyloxy Ergol, di-p-tolyl carbonic ester, phenyl-alpha-naphthyl carbonic ester, 1, 4- diethoxy naphthalene, 1- hydroxyl -2- naphthoic acid phenyl ester, ortho-xylene-is bis--and (phenyl ether), 4- (methylenedioxy phenoxy methyl) biphenyl, 4, 4 '-second dioxies support-bis--benzoic acid dibenzyl ester, dibenzoyl oxygroup methane, 1, 2- bis- (3- methylphenoxy) ethylene, bis- [2- (4- Difluoro-phenoxy) ethyls] Ether, methyl p-nitrobenzoate, p-methyl benzenesulfonic acid phenyl ester, but be not particularly limited in this.Above-mentioned sensitizer can be independent or a variety of be used in mixed way.
Giving property of electronics leuco dye, electronics acceptance color developing agent used in thermosensitive recording body of the invention, the type of other various compositions and amount are not particularly limited, it is determined according to required performance and record adaptive, usually relative to 1 part of electronics giving property leuco dye, 0.5~10 part of electronics acceptance color developing agent, 0.5~10 part or so sensitizer are used.
Utilize pulverizers or the emulsifier units appropriate such as ball mill, vertical ball mill (ア ト イ ラ タ -), sand mill, it is a few micrometers of particles below that partial size, which is made, in giving property of electronics leuco dye, electronics acceptance color developing agent and the material being added as needed, adhesive is added and various added materials are added according to purpose, coating fluid is made.Coating method is not particularly limited, it can be coated according to known common technology, such as appropriate selection uses off-machine coater or on-line coater machine equipped with various spreaders such as airblade coating device, bar type scraper spreader, tulwar (bent blade) spreader, oblique knife (bevel blade) spreader, roll coating machines.The coating weight of heat sensitive recording layer is not particularly limited, is usually 2~12g/m in terms of dry weight2Range.
Finally, secondly in priming coat containing draw ratio be 30 or more pigment the case where be described.In the present invention; when in the priming coat of thermosensitive recording body containing draw ratio be 30 or more pigment when; the composition of thermosensitive recording body are as follows: priming coat/heat sensitive recording layer/protective layer, priming coat/heat sensitive recording layer combination are equipped on support, it can be to add the pigment that draw ratio is 30 or more in the layer other than heat sensitive recording layer.
In the present invention; when in the priming coat of thermosensitive recording body containing draw ratio be 30 or more pigment when; with in above-mentioned protective layer containing draw ratio be 30 or more pigment when identical reason, compared with when using the pigment used in the past, covering property, flatness increase.
Therefore; when the composition of thermosensitive recording body are as follows: when being equipped with priming coat/heat sensitive recording layer/protective layer, priming coat/heat sensitive recording layer on support; i.e. when heat sensitive recording layer and/or protective layer are arranged on the priming coat for the pigment for being 30 or more containing draw ratio; the good priming coat of surface smoothness also influences the flatness of the heat sensitive recording layer and/or protective layer that are arranged thereon, therefore good developing sensitivity can be obtained and record the image quality of image.
In thermosensitive recording body of the invention, pigment that the draw ratio that contains in priming coat is 30 or more and can pigment wish identical as pigment used in above-mentioned protective layer.The pigment that draw ratio is 30 or more is preferably used alone, to play effect using its special shape, when total mixing number relative to 100 parts by weight pigment, when the inorganic pigment that draw ratio is 30 or more is 50 parts by weight or more, is more preferably 80 parts by weight or more, it can be used in combination with various pigment of the draw ratio less than 30.
As adhesive, it is desirable to suitably selection uses from adhesive used in above-mentioned protective layer, relative to the 100 parts of pigment contained in priming coat, preferably 10~40 parts or so.
It in the present invention, can be suitably used in protective layer, heat sensitive recording layer, priming coat: the crosslinking agents such as glyoxal, methylol melamine, melamino-formaldehyde resin, polyamide epichlorohydrin resin, potassium peroxydisulfate, ammonium persulfate, sodium peroxydisulfate, iron chloride, magnesium chloride, borax, boric acid, alum, ammonium chloride；The fatty acid metal salts such as zinc stearate, calcium stearate；The lubricants such as wax class, silicones class；Dyestuff, fluorescent dye, ultraviolet absorbing agent, antioxidant, antiplastering aid, anticlogging agent etc..
It as the support of thermosensitive recording body of the invention, can be used: paper, recycled writing paper, synthetic paper, film, plastic film, foamed plastic film, non-woven fabrics etc. and the composite sheet that they are composed.
Thermosensitive recording body of the invention can also be appropriately carried out various well known technologies in the thermosensitive recording bodies fields such as the smoothing techniques such as supercalender processing, for improving developing sensitivity etc. after the coating of each layer；Back coating can also be set on the face opposite with the heat sensitive recording layer of support, seek correction bending (カ-Le).Middle layer can also be set between heat sensitive recording layer and protective layer.
Thermosensitive recording body of the invention, although to obtain good developing sensitivity and image can be recorded by the pigment for being 30 or more containing draw ratio in any layer being arranged on support, but wherein by the available more good developing sensitivity of pigment and record image in most surface layer containing draw ratio for 30 or more, while showing print gloss and other effects.The blending ratio of the pigment of 30 or more draw ratio in protective layer can be especially set to be higher than the blending ratio in heat sensitive recording layer, so by the pigment for being 30 or more containing draw ratio in protective layer, available optimum efficiency.
Embodiment
Hereinafter, illustrating thermosensitive recording body of the invention by embodiment.
Lower painting (under) layer, heat-sensitive color layer are formed on the single side of the support made in embodiment and comparative example, form protective layer as needed.Back coating is formed on another side.
Still it should be noted that, in specification, " part " and " % " respectively indicates " parts by weight " and " % weight ".Coating used in each coating of thermosensitive recording body is prepared as follows.
[preparing lower coated coating]
Lower coating coating fluid 1
90.0 parts of sintering kaolin (エ Application ゲ Le Ha-De corporation ア Application シ レ Star Network ス 90)
10.0 parts of styrene-butadiene copolymer latex (solid component 50%)
50.0 parts of water
It is mixed and forms the mixture constituted by above-mentioned, lower coating coating fluid 1 is made.
Lower coating masking liquid 2
90.0 parts of high length-diameter ratio kaolin (イ メ リ ス corporation U Application Star ア 1500)
10.0 parts of styrene-butadiene copolymer latex (solid component 50%)
50.0 parts of water
It is mixed and forms the mixture constituted by above-mentioned, lower coating coating fluid 2 is made.
[preparing thermosensitive color development coating]
Wet process is carried out to the developer dispersion of following formulas (A liquid) and basic colorless dye dispersion liquid (B liquid) respectively using sand mill to grind, and average grain diameter is made to reach 1 micron.
A liquid (developer dispersion)
4- hydroxyl -4 ' -6.0 parts of isopropoxy diphenyl sulphone (DPS)
18.8 parts of 10% aqueous solution of polyvinyl alcohol
11.2 parts of water
B liquid (basic colorless dye dispersion liquid)
2.0 parts of 3- dibutylamino -6- methyl -7- anilino fluorane (ODB-2)
4.6 parts of 10% aqueous solution of polyvinyl alcohol
2.6 parts of water
C liquid (enhanced sensitivity agent dispersing liquid)
1,2- 6.0 parts of bis- phenoxy group benzene
10% 20 parts of poly-vinyl alcohol solution
11 parts of water
Then the coating fluid in following ratio mixed dispersion liquids, as recording layer.
Recording layer coating liquid 1
25.7 parts of A liquid (22% developer dispersion)
18.8 parts of B liquid (30% basic colorless dye dispersion liquid)
25.7 parts of C liquid (16% enhanced sensitivity agent dispersing liquid)
The kaolin of modulation: イ メ リ ス corporation CONTOUR1500 (30% dispersion liquid)
2.5 μm 1.7 parts of oil absorption 45ml/100g, average diameter
30.7 parts of polyvinyl alcohol (10% solution)
Recording layer coating liquid 2
18.9 parts of A liquid (22% developer dispersion)
13.9 parts of B liquid (30% basic colorless dye dispersion liquid)
18.9 parts of C liquid (16% enhanced sensitivity agent dispersing liquid)
The kaolin of modulation: 10.0 parts of CONTOUR1500 (30% dispersion liquid)
22.6 parts of polyvinyl alcohol (10% solution)
Recording layer coating liquid 3
13.5 parts of A liquid (22% developer dispersion)
9.9 parts of B liquid (30% basic colorless dye dispersion liquid)
13.5 parts of C liquid (16% enhanced sensitivity agent dispersing liquid)
The kaolin of modulation: 16.7 parts of CONTOUR1500 (30% dispersion liquid)
16.2 parts of polyvinyl alcohol (10% solution)
Recording layer coating liquid 4
26.9 parts of A liquid (22% developer dispersion)
19.7 parts of B liquid (30% basic colorless dye dispersion liquid)
26.9 parts of C liquid (16% enhanced sensitivity agent dispersing liquid)
The kaolin of modulation: 0.2 part of CONTOUR1500 (30% dispersion liquid)
32.2 parts of polyvinyl alcohol (10% solution)
Recording layer coating liquid 5
10.8 parts of A liquid (22% developer dispersion)
7.9 parts of B liquid (30% basic colorless dye dispersion liquid)
10.8 parts of C liquid (16% enhanced sensitivity agent dispersing liquid)
The kaolin of modulation: 20.0 parts of CONTOUR1500 (30% dispersion liquid)
13.0 parts of polyvinyl alcohol (10% solution)
Recording layer coating liquid 6
18.9 parts of A liquid (22% developer dispersion)
13.9 parts of B liquid (30% basic colorless dye dispersion liquid)
18.9 parts of C liquid (16% enhanced sensitivity agent dispersing liquid)
Kaolin: 10.0 parts of リ オ カ ピ system corporation Capim DG (30% dispersion liquid)
Oil absorption 45ml/100g
22.7 parts of polyvinyl alcohol (10% solution)
Recording layer coating liquid 7
18.9 parts of A liquid (22% developer dispersion)
13.9 parts of B liquid (30% basic colorless dye dispersion liquid)
18.9 parts of C liquid (16% enhanced sensitivity agent dispersing liquid)
Kaolin: 10.0 parts of リ オ カ ピ system corporation Capim NP (30% dispersion liquid)
Oil absorption 45ml/100g
22.7 parts of polyvinyl alcohol (10% solution)
Recording layer coating liquid 8
18.9 parts of A liquid (22% developer dispersion)
13.9 parts of B liquid (30% basic colorless dye dispersion liquid)
18.9 parts of C liquid (16% enhanced sensitivity agent dispersing liquid)
Silica: Japanese シ リ カ corporation ニ Star プ シ-Le E-743 (30% dispersion liquid)
10.0 parts of oil absorption 110ml/100g
22.7 parts of polyvinyl alcohol (10% solution)
Recording layer coating liquid 10
18.9 parts of A liquid (22% developer dispersion)
13.9 parts of B liquid (30% basic colorless dye dispersion liquid)
18.9 parts of C liquid (16% enhanced sensitivity agent dispersing liquid)
Mica: 10.0 parts of U-プ ケ ミ カ Le corporation MK100 (30% dispersion liquid)
Give oil mass 25m1/100g
22.7 parts of polyvinyl alcohol (10% solution)
Recording layer coating liquid 11
18.9 parts of A liquid (22% developer dispersion)
13.9 parts of B liquid (30% basic colorless dye dispersion liquid)
18.9 parts of C liquid (16% enhanced sensitivity agent dispersing liquid)
Kaolin: 10.0 parts of リ オ カ ピ system corporation Capim CC (30% dispersion liquid)
Oil absorption 45ml/100g
22.7 parts of polyvinyl alcohol (10% solution)
Recording layer coating liquid 12
18.9 parts of A liquid (22% developer dispersion)
13.9 parts of B liquid (30% basic colorless dye dispersion liquid)
18.9 parts of C liquid (16% enhanced sensitivity agent dispersing liquid)
Kaolin: 10.0 parts of イ メ リ ス corporation ASTLA plate (30% dispersion liquid)
Oil absorption 45ml/100g
22.7 parts of polyvinyl alcohol (10% solution)
Recording layer coating liquid 13
18.9 parts of A liquid (developer dispersion)
13.9 parts of B liquid (leuco dye dispersion liquid)
18.9 parts of C liquid (enhanced sensitivity agent dispersing liquid)
32.7 parts of polyvinyl alcohol (10% solution)
[preparing protection layer for paint]
Protective layer coating solution 1
30 parts of kaolin (イ メ リ ス corporation: ア Le テ イ マ Star ト)
Oil absorption 35ml/100g
Carboxy-modified 70 parts of PVA (Network ラ レ corporation: PVA-KL118)
5 parts of polyamide epichlorohydrin (starlight PMC corporation: WS4020)
5 parts of zinc stearate (Zhong jing grease corporation: Ha イ De リ Application L-536)
Protective layer coating solution 2
9.0 parts of kaolin (IMERYS corporation, trade name: Contour1500)
Carboxy-modified 30 parts of PVA (Network ラ レ corporation, trade name: PVA-KL118)
2.0 parts of polyamide epichlorohydrin (starlight PMC corporation: WS4020)
2.0 parts of zinc stearate (Zhong jing grease corporation: Ha イ De リ Application L-536)
Protective layer coating solution 3
30 parts of kaolin (DBK corporation: DB-PLATE)
Oil absorption 45ml/100g
Carboxy-modified 70 parts of PVA (Network ラ レ corporation: PVA-KL118)
5 parts of polyamide epichlorohydrin (WS4020)
5 parts of zinc stearate (Zhong jing grease corporation: Ha イ De リ Application L-536)
Protective layer coating solution 4
25 parts of kaolin (IMERYS corporation, trade name: Contour1500)
5 parts of kaolin (DBK corporation: DB-PLATE)
Carboxy-modified 70 parts of PVA (Network ラ レ corporation: PVA-KL118)
5 parts of polyamide epichlorohydrin (WS4020)
5 parts of zinc stearate (Zhong jing grease corporation: Ha イ De リ L-536)
[preparing back coating coating]
50 parts of aluminium hydroxide
Polyvinyl alcohol (Network ラ レ corporation: PVA117) 500 parts of 10% aqueous solution
70 parts of water
[there is no protective layer, high length-diameter ratio pigment mixing (blending ratio increase and decrease) in heat-sensitive layer]
[embodiment 1]
It (is measured on level ground: 47g/m using Meyer bar (Meyer bar) in vellum2) on apply plant coating coating fluid 1, using air-supply drier (120 DEG C, 1 minute) be dried.It is coated with recording layer coating liquid 1 on lower layer's paper using Meyer bar, is dried using air-supply drier (60 DEG C, 2 minutes).It is overleaf coated with back coating coating again using Meyer bar, is dried using air-supply drier (60 DEG C, 2 minutes), carries out supercalendering processing later, reaches smoothness 500~700 seconds, obtain thermosensitive recording body.It is 8g/m by the coating weight that the weight difference of lower coated coating, record coating, back coating coating acquires2、5.1g/m2、0.3g/m2。
[embodiment 2]
Other than usage record layer coating fluid 2, thermosensitive recording body is made in the same manner as shown in Example 1.
[embodiment 3]
Other than usage record layer coating fluid 3, thermosensitive recording body is made in the same manner as shown in Example 1.
[embodiment 4]
Other than usage record layer coating fluid 4, thermosensitive recording body is made in the same manner as shown in Example 1.
[embodiment 5]
Other than usage record layer coating fluid 5, thermosensitive recording body is made in the same manner as shown in Example 1.
[embodiment 6]
Other than usage record layer coating fluid 10, thermosensitive recording body is made in the same manner as shown in Example 1.
[change temperature-sensitive layer pigment]
[embodiment 7]
Other than usage record layer coating fluid 11, thermosensitive recording body is made in the same manner as shown in Example 1.
[embodiment 8]
Other than usage record layer coating fluid 12, thermosensitive recording body is made in the same manner as shown in Example 1.
[there is no protective layer, mix common pigments in heat sensitive layer]
[comparative example 1]
Other than usage record layer coating fluid 6, thermosensitive recording body is made in the same manner as shown in Example 1.
[comparative example 2]
Other than usage record layer coating fluid 7, thermosensitive recording body is made in the same manner as shown in Example 1.
[comparative example 3]
Other than usage record layer coating fluid 8, thermosensitive recording body is made in the same manner as shown in Example 1.
[matcoveredn mixes high length-diameter ratio pigment into protective layer]
[embodiment 9]
Other than usage record layer coating fluid 13, thermosensitive recording body is formed in the same manner as shown in Example 1, using Meyer bar coat protective layer coating fluid 2 on it, is dried using air-supply drier (60 DEG C, 2 minutes).Again similarly to Example 1, it is coated with back coating coating using Meyer bar, after dry, carry out supercalendering processing, reach smoothness 1500~2000 seconds, obtain thermosensitive recording body.The coating weight of the protective layer acquired by weight difference is 2.6g/m2。
[embodiment 10]
Other than using protective layer coating solution 1, thermosensitive recording body is made according to method same as Example 9.
[there is no protective layer, mix high length-diameter ratio pigment in downward coating and heat-sensitive layer]
[embodiment 11]
Other than using lower coating coating fluid 2, thermosensitive recording body is made according to method same as Example 2.
[matcoveredn, downward coating, heat-sensitive layer mix high length-diameter ratio pigment in protective layer]
[embodiment 12]
On the thermosensitive recording body made in embodiment 11, according to method coat protective layer coating fluid 2 same as Example 9, thermosensitive recording body is made.
[matcoveredn mixes high length-diameter ratio pigment in heat sensitive layer, protective layer]
[embodiment 13]
On the thermosensitive recording body made in example 2, according to method coat protective layer coating fluid 2 same as Example 9, thermosensitive recording body is made.
[matcoveredn mixes high length-diameter ratio pigment in downward coating, protective layer]
[embodiment 14]
Other than using lower coating coating fluid 2, thermosensitive recording body is made according to method same as Example 9.
[matcoveredn]
[comparative example 4]
Other than using protective layer coating solution 3, thermosensitive recording body is made according to method same as Example 9.
[matcoveredn mixes high length-diameter ratio pigment in heat sensitive layer]
[embodiment 15]
Other than using protective layer coating solution 3, thermosensitive recording body is made according to method identical with embodiment 13.
[matcoveredn mixes high length-diameter ratio pigment in downward coating, heat-sensitive layer]
[embodiment 16]
Other than using protective layer coating solution 3, thermosensitive recording body is made according to method identical with embodiment 12.
[matcoveredn does not descend coating, and high length-diameter ratio pigment is used in protective layer]
[embodiment 17]
It (is measured on level ground: 47g/m using Meyer bar in vellum2) on be coated with recording layer coating liquid 13, using air-supply drier (60 DEG C, 2 minutes) be dried.Using Meyer bar coat protective layer coating fluid 2 on it, it is dried using air-supply drier (60 DEG C, 2 minutes).It is further overleaf coated with back coating coating using Meyer bar, is dried using air-supply drier (60 DEG C, 2 minutes), supercalendering processing is carried out later, reaches smoothness 1500~2000 seconds, obtain thermosensitive recording body.It is 5.1g/m by the coating weight that the weight difference of record coating, protection layer for paint, back coating coating acquires2、2.5g/m2、0.3g/m2。
[matcoveredn does not descend coating]
[comparative example 5]
Other than using protective layer coating solution 3, thermosensitive recording body is made according to method identical with embodiment 17.
[matcoveredn does not descend coating, uses high length-diameter ratio pigment in the layered system]
[embodiment 18]
Other than usage record layer coating fluid 2, protective layer coating solution 3, thermosensitive recording body is made according to method identical with embodiment 17.
[there is no protective layer, do not descend coating, use high length-diameter ratio pigment in the layered system]
[embodiment 19]
It (is measured on level ground: 47g/m using Meyer bar in vellum2) on be coated with recording layer coating liquid 2, using air-supply drier (60 DEG C, 2 minutes) be dried.It is further overleaf coated with back coating coating using Meyer bar, is dried using air-supply drier (60 DEG C, 2 minutes), supercalendering processing is carried out later, reaches smoothness 500~700 seconds, obtain thermosensitive recording body.It is 5.1g/m by the coating weight that the weight difference of record coating, protection layer for paint, back coating coating acquires2、0.3g/m2。
[matcoveredn does not descend coating, and high length-diameter ratio pigment is used in heat-sensitive layer, protective layer]
[embodiment 20]
Other than usage record layer coating fluid 2, thermosensitive recording body is made according to method identical with embodiment 17.
[there is no protective layer, do not descend coating]
[comparative example 6]
Other than usage record layer coating fluid 13, thermosensitive recording body is made according to method identical with embodiment 19.
[matcoveredn uses high length-diameter ratio pigment in lower coating]
[embodiment 21]
Other than using lower coating coating fluid 2, thermosensitive recording body is made according to method identical with comparative example 4.
[there is no protective layer, high length-diameter ratio pigment is used in lower coating]
[embodiment 22]
Other than using lower coating coating fluid 2, thermosensitive recording body is made according to method identical with comparative example 2.
[matcoveredn, and with covering layer pigment]
[embodiment 23]
Other than using protective layer coating solution 4, thermosensitive recording body is made according to method identical with embodiment 15.
The draw ratio and oil absorption of pigment used are summarised in table 1, and the performance of embodiment and comparative example is as shown in table 2.To the performance of pigment and thermosensitive recording body be measured and evaluation method is as follows.
[average diameter]
With electronics microscope photographing pigment, 100 particles are carried out with the length measurment of X-direction, Y direction, Z-direction, is averaged to the longest axis and the 2nd long axis of each particle, is calculated the diameter of each particle, find out average value.
[draw ratio]
The ratio between the diameter of 100 particles and the length (thickness) of most short axle (following formula) are calculated, average value is found out.
Draw ratio=diameter/thickness
[oil absorption]
It is measured according to JIS K-5101.
[record concentration]
Lettering is carried out using big storehouse corporation thermal printer TH-PMD (N0.8), measures the part grade #14 using Macbeth densimeter.
[print gloss]
According to JISZ-8741,60 ° of gloss of color technical research institute corporation Grossmeters measurement sample in village are used.
◎: 80% or more glossiness
Zero: 50% or more, less than 80%
△: 30% or more, less than 50%
×: less than 30%
[image quality]
The whole lettering parts (ベ タ) of visual valuation.
◎: the part that shows money or valuables one carries unintentionally is not observed completely
Zero: not observing the part that shows money or valuables one carries unintentionally substantially
△: the part that shows money or valuables one carries unintentionally a little is observed
×: the part that shows money or valuables one carries unintentionally is very more
[head wear]
To the thermosensitive recording body of production, after printing 1,000,000 row words on head wear evaluation pattern using セ イ U-electronics industry thermal printer DPU-411, the abrasiveness of evaluating magnetic heads.
◎: head wear is substantially had no
Zero: slightly seeing head wear
△: head wear is quite serious
×: lettering, which is less than 1,000,000 row magnetic heads, have been damaged
Table 1
| Draw ratio | Average diameter μm | Oil absorption ml/100g | |
| アンシレックス90 | 1.1 | 1.6 | 65 |
| コンツア1500 | 60 | 2.5 | 45 |
| Capim DG | 11 | 1.2 | 45 |
| Capim NP | 20 | 2.2 | 45 |
| ニツプシ-ルE-743 | 1.1 | 3.5 | 110 |
| Capim CC | 35 | 4.8 | 45 |
| ASTLA plate | 34 | 2.0 | 45 |
| DB-PLATE | 10 | 2.8 | 45 |
| アルテイマツト | 5.8 | 5.3 | 45 |
Table 2
| Record concentration | Image quality | Head wear | Print gloss | Plasticizer resistance properties | Water resistance | |
| Embodiment 1 | 1.41 | ○ | ○ | △ | △ | △ |
| Embodiment 2 | 1.5 | ◎ | ○ | ○ | △ | △ |
| Embodiment 3 | 1.33 | ◎ | ○ | ○ | △ | △ |
| Embodiment 4 | 1.37 | △ | ○ | △ | △ | △ |
| Embodiment 5 | 1.28 | ○ | △ | ◎ | △ | △ |
| Embodiment 6 | 1.26 | ○ | △ | △ | △ | △ |
| Embodiment 7 | 1.28 | △ | ○ | △ | △ | △ |
| Embodiment 8 | 1.32 | ○ | ○ | ○ | △ | △ |
| Embodiment 9 | 1.39 | ◎ | ◎ | ○ | ◎ | ◎ |
| Embodiment 10 | 1.33 | ○ | ○ | ○ | ◎ | ◎ |
| Embodiment 11 | 1.39 | ○ | ○ | ○ | △ | △ |
| Embodiment 12 | 1.55 | ◎ | ◎ | ◎ | ◎ | ◎ |
| Embodiment 13 | 1.58 | ◎ | ◎ | ◎ | ◎ | ◎ |
| Embodiment 14 | 1.54 | ◎ | ◎ | ◎ | ◎ | ◎ |
| Comparative example 1 | 1.21 | △ | × | △ | △ | △ |
| Comparative example 2 | 1.11 | △ | × | × | △ | △ |
| Comparative example 3 | 1.2 | △ | ◎ | △ | △ | △ |
| Comparative example 4 | 1.33 | △ | × | △ | ◎ | ◎ |
| Embodiment 15 | 1.36 | ○ | × | △ | ◎ | ◎ |
| Embodiment 16 | 1.32 | ○ | × | △ | ◎ | ◎ |
| Embodiment 17 | 1.41 | ◎ | ◎ | ◎ | ◎ | ◎ |
| Embodiment 18 | 1.29 | ○ | × | △ | ◎ | ◎ |
| Embodiment 19 | 1.25 | ◎ | ○ | ○ | △ | △ |
| Embodiment 20 | 1.38 | ○ | ◎ | ◎ | ◎ | ◎ |
| Embodiment 21 | 1.22 | ○ | × | △ | ◎ | ◎ |
| Embodiment 22 | 1.26 | ○ | △ | △ | △ | △ |
| Embodiment 23 | 1.43 | ○ | × | △ | ◎ | ◎ |
| Comparative example 5 | 1.18 | △ | × | △ | ◎ | ◎ |
| Comparative example 6 | 1.04 | × | △ | × | △ | △ |
Industrial applicability
According to the present invention it is possible to obtain the excellent thermosensitive recording body of developing sensitivity, image quality.Contain the pigment that draw ratio is 30 or more by the most surface layer in thermosensitive recording body; it can solve the above subject; the high glaze thermosensitive recording body with common printed adaptive, particularly high printing part gloss adaptive available simultaneously; especially by the pigment for being 30 or more containing draw ratio in protective layer, the few thermosensitive recording body of the head wear that the storage stability of available record image section and blank parts further increases.
(according to the 19th article of modification of treaty)
1. a kind of thermosensitive recording body, the thermosensitive recording body is by least the single-layer or multi-layer with heat sensitive recording layer is formed on support, the heat sensitive recording layer contains colourless or light giving property of electronics leuco dye and electronics acceptance color developing agent, it is characterised in that: the kaolin for being 30 or more containing draw ratio in at least one layer on support.
2. the thermosensitive recording body of claim 1, it is characterised in that: contain the kaolin that draw ratio is 30 or more on the most surface layer of thermosensitive recording body.
Claims (3)
1. a kind of thermosensitive recording body, the thermosensitive recording body is by least the single-layer or multi-layer with heat sensitive recording layer is formed on support, the heat sensitive recording layer contains colourless or light giving property of electronics leuco dye and electronics acceptance color developing agent, it is characterised in that: the pigment for being 30 or more containing draw ratio in at least one layer on support.
2. the thermosensitive recording body of claim 1, it is characterised in that: the pigment that draw ratio is 30 or more is kaolin.
3. the thermosensitive recording body of claims 1 or 2, it is characterised in that: contain the pigment that draw ratio is 30 or more on the most surface layer of thermosensitive recording body.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2004282904 | 2004-09-29 | ||
| JP282904/2004 | 2004-09-29 | ||
| JP075036/2005 | 2005-03-16 |
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| Publication Number | Publication Date |
|---|---|
| CN101031435A true CN101031435A (en) | 2007-09-05 |
| CN100553998C CN100553998C (en) | 2009-10-28 |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104392662A (en) * | 2014-12-03 | 2015-03-04 | 竹林伟业科技发展（天津）股份有限公司 | Three-layer bright-surface thermosensitive logistics label |
| CN105200850A (en) * | 2015-09-18 | 2015-12-30 | 金华盛纸业（苏州工业园区）有限公司 | Bottom-coating-free high-protective-performance thermo-sensitive paper and making method thereof |
| CN108136805A (en) * | 2015-10-23 | 2018-06-08 | 日本制纸株式会社 | Thermosensitive recording body |
-
2005
- 2005-08-24 CN CNB2005800325712A patent/CN100553998C/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104392662A (en) * | 2014-12-03 | 2015-03-04 | 竹林伟业科技发展（天津）股份有限公司 | Three-layer bright-surface thermosensitive logistics label |
| CN105200850A (en) * | 2015-09-18 | 2015-12-30 | 金华盛纸业（苏州工业园区）有限公司 | Bottom-coating-free high-protective-performance thermo-sensitive paper and making method thereof |
| CN108136805A (en) * | 2015-10-23 | 2018-06-08 | 日本制纸株式会社 | Thermosensitive recording body |
| CN108136805B (en) * | 2015-10-23 | 2019-12-13 | 日本制纸株式会社 | Thermosensitive recording medium |
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| CN100553998C (en) | 2009-10-28 |
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