CN101068982A - Sheet of high whiteness degree - Google Patents
Sheet of high whiteness degree Download PDFInfo
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- CN101068982A CN101068982A CNA2004800445122A CN200480044512A CN101068982A CN 101068982 A CN101068982 A CN 101068982A CN A2004800445122 A CNA2004800445122 A CN A2004800445122A CN 200480044512 A CN200480044512 A CN 200480044512A CN 101068982 A CN101068982 A CN 101068982A
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- paper
- whiteness
- fluorescent whitening
- whitening agent
- sheet
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Classifications
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- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
- D21H21/00—Non-fibrous material added to the pulp, characterised by its function, form or properties; Paper-impregnating or coating material, characterised by its function, form or properties
- D21H21/14—Non-fibrous material added to the pulp, characterised by its function, form or properties; Paper-impregnating or coating material, characterised by its function, form or properties characterised by function or properties in or on the paper
- D21H21/30—Luminescent or fluorescent substances, e.g. for optical bleaching
-
- 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
- B41M5/50—Recording sheets characterised by the coating used to improve ink, dye or pigment receptivity, e.g. for ink-jet or thermal dye transfer recording
- B41M5/502—Recording sheets characterised by the coating used to improve ink, dye or pigment receptivity, e.g. for ink-jet or thermal dye transfer recording characterised by structural details, e.g. multilayer materials
- B41M5/508—Supports
-
- 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
- B41M5/50—Recording sheets characterised by the coating used to improve ink, dye or pigment receptivity, e.g. for ink-jet or thermal dye transfer recording
- B41M5/52—Macromolecular coatings
-
- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03G—ELECTROGRAPHY; ELECTROPHOTOGRAPHY; MAGNETOGRAPHY
- G03G7/00—Selection of materials for use in image-receiving members, i.e. for reversal by physical contact; Manufacture thereof
- G03G7/0006—Cover layers for image-receiving members; Strippable coversheets
- G03G7/002—Organic components thereof
-
- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03G—ELECTROGRAPHY; ELECTROPHOTOGRAPHY; MAGNETOGRAPHY
- G03G7/00—Selection of materials for use in image-receiving members, i.e. for reversal by physical contact; Manufacture thereof
- G03G7/0006—Cover layers for image-receiving members; Strippable coversheets
- G03G7/002—Organic components thereof
- G03G7/0026—Organic components thereof being macromolecular
- G03G7/0033—Natural products or derivatives thereof, e.g. cellulose, proteins
-
- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03G—ELECTROGRAPHY; ELECTROPHOTOGRAPHY; MAGNETOGRAPHY
- G03G7/00—Selection of materials for use in image-receiving members, i.e. for reversal by physical contact; Manufacture thereof
- G03G7/0006—Cover layers for image-receiving members; Strippable coversheets
- G03G7/002—Organic components thereof
- G03G7/0026—Organic components thereof being macromolecular
- G03G7/004—Organic components thereof being macromolecular obtained by reactions only involving carbon-to-carbon unsaturated bonds
-
- 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
- B41M5/50—Recording sheets characterised by the coating used to improve ink, dye or pigment receptivity, e.g. for ink-jet or thermal dye transfer recording
- B41M5/52—Macromolecular coatings
- B41M5/5236—Macromolecular coatings characterised by the use of natural gums, of proteins, e.g. gelatins, or of macromolecular carbohydrates, e.g. cellulose
-
- 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
- B41M5/50—Recording sheets characterised by the coating used to improve ink, dye or pigment receptivity, e.g. for ink-jet or thermal dye transfer recording
- B41M5/52—Macromolecular coatings
- B41M5/5254—Macromolecular coatings characterised by the use of polymers obtained by reactions only involving carbon-to-carbon unsaturated bonds, e.g. vinyl polymers
-
- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
- D21H19/00—Coated paper; Coating material
- D21H19/36—Coatings with pigments
- D21H19/44—Coatings with pigments characterised by the other ingredients, e.g. the binder or dispersing agent
- D21H19/56—Macromolecular organic compounds or oligomers thereof obtained by reactions only involving carbon-to-carbon unsaturated bonds
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Spectroscopy & Molecular Physics (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Paper (AREA)
- Ink Jet Recording Methods And Recording Media Thereof (AREA)
Abstract
A compound binding to leukocytes, which comprises Met-Leu-Phe or Nle-Leu-Phe serving as the leukocyte-binding site of a formyl peptide receptor (FPR), a binding part comprising Ser or Thr elevating the binding ratios to monocytes and lymphocytes in all leukocytes, a group which can be labeled with a radioactive metal or a paramagnetic metal, and a spacer binding them shows binding properties specific to all leukocytes, i.e., neutrophils, monocytes and lymphocytes both in vivo and in vitro and can be labeled with a radioactive metal or a paramagnetic metal. Owing to these characteristics, this compound is highly useful in SPECT image diagnosis, PET image diagnosis, MRI image diagnosis and so on wherein imaging is performed in a site with vigorous leukocyte infiltration accompanied by an immune reaction in an individual.
Description
Technical field
The present invention relates to can be used for black and white and the electrophotographic transfer of colour and the sheet of high whiteness degree of these two kinds of occasions of ink mist recording, even the sheet of high whiteness degree that can be used for electrophotographic transfer and these two kinds of occasions of ink mist recording of fluorescent whitening agent can not adhered in the surface that particularly relating to catches has touched the sheet of high whiteness degree that has added fluorescent whitening agent yet.
Background technology
From in 1972, produced electrophotographic transfer paper first in Japan and (be called " PPC paper " below.) since, the output of this PPC paper increases year by year continuously.At present, if information can be applied to the tightest PPC of service condition paper with paper, so inevitable ink jet recording paper, heat-transferring printing paper, the small breadth litho-paper of also can be used as, therefore, even generally be called PPC paper, also can be in the label of wrapping paper, major part all can be expressed and also can be used as the above-mentioned paper of using.
But, by printer, electrophotographic transfer mode, ink-jet recording etc., being formed in the image on the paper, major part is full-color image and monochrome image.In the printing form of existing full-color image, lithographic printing is a main body, and still, through the development of several years, based in the electrophotographic transfer mode of monochrome image, the ink-jet recording, the ratio of full color increases hastily up till now.
At present, in the formation of full-color image, by being in the great majority that lithographic printing forms, using in the paper as carrier, for aesthetic property, the vividness that presents image, generally adopt whiteness in 85～95% scope, so-called coated paper, art-paper.On the other hand, be in the electrophotographic transfer mode, ink-jet recording of main body at monochrome image, the general so-called PPC paper that forms by the uncoated paper of whiteness in 70～85% scope that adopts, or with the surface of the PPC paper paper of smoothing processing a little.But in electrophotographic transfer mode, ink-jet recording, the requirement of full color uprises equally, and is identical with lithographic printing, requires aesthetic property, the vividness of image.For this reason, the whiteness of raising paper is absolutely necessary.
On the other hand,, include and adopt the high raw material of whiteness in order to improve the whiteness of paper, that is, and the method for the paper pulp of high whiteness, filler (calcium carbonate, talcum, kaolin etc.), the method for adding fluorescent whitening agent, and the method etc. of adding the two.Wherein, in order to improve the whiteness with paper, before many decades, the known fluorescent whitening agent that in paper pulp, adds, or the technology that fluorescer is used as the part of surperficial sizing material.
Such as, in following patent documentation 1, can correctly reproduce the electrophotographic transfer paper of the tone of master for the tone that obtains the image by the duplicator transfer printing, disclose surface at body paper, be coated with starch and fluorescent whitening agent, the invention of the electrophotographic transfer paper of whiteness in 81.8～86.5% scope.In following patent documentation 2～5, disclose respectively in the image receiving layer of color electric photo transfer paper and contain fluorescent whitening agent, form special gloss, the invention of form and aspect.In addition, in following patent documentation 6, disclose following invention, wherein, in order to obtain to suppress the generation of surface folding and bubble (blister), and guarantee the good lithographic plate rotary printing coating paper of printing smoothness, the polyvinyl alcohol that will have pigment and specific gel degree on the surface of body paper (is called " PVA " below.) layer be coated on the about face, at least one layer of these layers, have wetting agent, and the fine pore of pigment overlay and fine pore density keep within the limits prescribed.
In order to make the paper pulp of high white, generally must adopt the wood chip of the few seeds of colored component, or the bleaching of paper pulp to adopt the chlorine of a large amount of chlorine dioxide, chlorite etc. be bleaching agent.From the viewpoint of environmental pollution, so, a large amount of chlorine of employing is that the mode of bleaching agent is bad in the blanching step of paper pulp.In addition, the selection of seeds, the cost of blanching step are very high, and simultaneously, owing to improve blanching step, the rate of recovery of paper pulp is step-down also, and economic impact is bigger.
On the other hand, in charta, add fluorescent whitening agent, or fluorescent whitening agent is made an addition in the sizing material on coat paper surface is economical with paper, and in aspect function admirables such as the aesthetic property of coloured image, distinctiveness, still, the use of the fluorescent whitening agent in paper is subjected to the restriction of food hygiene law, in addition, people point out, if a certain amount of above fluorescent whitening agent contacts with human body, can cause situations such as eczema.
In addition, the paper that is added with fluorescent whitening agent is compared with the paper that adopts high whiteness paper pulp, even be identical whiteness, is being exposed to sunray, in the following time of light of electric light, has the more shortcoming of reduction of whiteness.
JP patent documentation 1:JP spy opens the 2001-209204 document
JP patent documentation 2:JP spy opens the 2001-13710 document
JP patent documentation 3:JP spy opens the 2001-42559 document
JP patent documentation 4:JP spy opens the 2001-209204 document
JP patent documentation 5:JP spy opens the 2003-322990 document
JP patent documentation 6:JP spy opens the 2004-27411 document
The disclosure of an invention scheme
The problem that invention will solve
So, requirement for the full colorization of tackling electrophotographic transfer mode, ink-jet recording, for obtaining the paper of using of high whiteness, as consider environmental pollution problems and economy, think that then shortcut is to add fluorescent whitening agent in paper, but, must solve when adopting above-mentioned such fluorescent whitening agent the problem that contacts with human body, and suppress because photoconduction causes the situation of whiteness reduction.
The present inventor has repeatedly carried out various experiments, so that solve the problem in the use fluorescent whitening agent of above-mentioned prior art, consequently, find following situation, thereby finished the present invention, this situation refers to improve the whiteness of paper by add fluorescent whitening agent in paper pulp, and in its surface, by copying the size press of paper step, according to separately or the mode of mixing with starch etc. apply transparently, have the PVA of film forming, the water-soluble resin of polyacrylamide etc., thus, even directly contact at human body under the situation of paper, the few directly contact of the fluorescent whitening agent in paper human body surface, and can suppress because the reduction of the whiteness that photoconduction causes.
Promptly, the object of the present invention is to provide a kind of sheet of high whiteness degree that is suitable for electrophotographic transfer and ink-jet recording, it keeps improving by the interpolation fluorescent whitening agent advantage of whiteness and economy, the shortcoming to the possibility of the adverse effect of human body when reducing contact solves simultaneously because the problem that the whiteness paper that photoconduction causes reduces.
Be used to solve the technical scheme of problem
Above-mentioned purpose of the present invention can realize by following scheme.Promptly, the invention of the described sheet of high whiteness degree of claim 1 is a kind of surface that is at the paper that is added with fluorescent whitening agent, the layer that setting is formed by the film water-soluble resin or by the mixture of film water-soluble resin and another water-soluble resin forms layer, the sheet of high whiteness degree of the whiteness of paper in 92～98% scope.
In addition, " whiteness " of the present invention all represents the measured value based on ISO2470.If it is good that this whiteness more than or equal to 92%, then obtains to have, identical with general coated paper, art-paper, or the sheet of high whiteness degree of higher coloured image printing characteristic, if but surpassed 98%, then the problem that reduces because of the light whiteness would become big, so inadvisable.
As the paper pulp that can be used for sheet of high whiteness degree of the present invention, be not limited to this manufacture method, kind etc., also can adopt widely used known paper pulp, such as, the component paper pulp of the component ratio of broad leaf tree paper pulp, coniferous tree paper pulp, old paper paper pulp, the old paper paper pulp of change etc.In addition, the filler that can be used for sheet of high whiteness degree of the present invention can adopt the well-known filler of powdered whiting, precipitated calcium carbonate, talcum, kaolin, clay, amorphous silica, titanium dioxide etc.In addition, can be used for the occasion that the sizing material of sheet of high whiteness degree of the present invention is copied paper in neutrality, can adopt alkyl ketene dimer, alkenyl succinic anhydrides (alkenyl succinic anhydride), resinene sizing material etc., in addition, occasion in that acidity is copied paper can adopt the resin sizing material.
In addition, as the fluorescent whitening agent that can be used for sheet of high whiteness degree of the present invention, enumerate known carbonyl styryl (carbostyryl) based compound, cumarin (cumarin) based compound, stilbene (stilbene) based compound, aphthalimide base (naphthalimido) based compound, biphenyl (biphenyl) based compound benzoxazole quinoline (benzoxazoline) based compound, pyrazoline (pyrazoline) based compound, diaminourea stilbene sulfone (diaminostilbenesulfone) acid derivative, imidazoles (imidazole) derivative, cumarin (cumarin) derivative, triazole (triazole) derivative, carbazole (carbazole) derivative, pyridine (pyridine) is a derivative, naphthalene dicarboxylic acid derivant, imidazolidinone derivative etc.Particularly, preferably adopt diaminourea stilbene sulfone (diaminostibenesulfone) acid derivative, imdazole derivatives, cumarin (cumarin) derivative, triazole derivative, carbazole derivates, imidazolidinone derivative, stilbene (stilbene) based compound, benzoxazole quinoline (benzoxazoline) based compound.
In addition, in sheet of high whiteness degree of the present invention, can be according to purposes, suitably select and add the known promoter that is matched with in the common paper, such as, add chemicals service efficiency improving agent, filterability improving agent, dispersant, defrother, charged preventor, conductive processing agent, lubricant, pH regulator agent, releasing agent, mobile denaturant, anti-hydrated agent, paper power reinforcing agent etc.
In this form, the coating amount of the above-mentioned film water-soluble resin on the two sides more preferably greater than or equal 0.6g/m
2, be less than or equal to 5g/m
2If the coating amount of above-mentioned film water-soluble resin is less than 0.6mg/m
2Even then can not reduce to a great extent, but when paper contact human body, the ratio that fluorescent whitening agent is attached on the human body surface still increases, and is thus, inadvisable because of the whiteness that photoconduction causes.In addition, reduce and the viewpoint of the human body tack of fluorescent whitening agent from the whiteness that caused by photoconduction, the upper limit is not critical limit, still, at the coating amount of above-mentioned film water-soluble resin above 5g/m
2Occasion, during especially for electrophotographic transfer paper, therefore then photographic fixing, the crimpiness variation after duplicating are not preferred modes, so best above-mentioned coating amount is less than or equal to 5g/m
2
Also have, best in above-mentioned form, above-mentioned film water-soluble resin is at least a for what select from PVA, polyacrylamide and carboxymethyl cellulose.Above-mentioned film water-soluble resin both can use separately, also can mix use with the known paper power reinforcing agent of various starch, resin etc.
In addition, the sheet of high whiteness degree of above-mentioned form can be used as electrophotographic transfer and the shared paper of ink mist recording.
The effect of invention
The present invention is by above-mentioned scheme, obtain sheet of high whiteness degree, described in the following specific descriptions that the contrast of embodiment and comparative example is carried out, can obtain the whiteness height, and use fluorescent whitening agent, but under paper and situation that human body contacts, fluorescent whitening agent still can not be attached on the human body, and can suppress the paper of the reduction of the whiteness that causes because of photoconduction.
The preferred form that is used to carry out an invention
When embodiment and comparative example are compared, describe below being used to implement preferred form of the present invention.In addition, the embodiment that provides below can't be defined in this with the present invention, the embodiment of other that can be applied to comprise in the claim with being equal to.In addition, below employed ratio as there is no particular limitation, then be meant quality % (equaling weight %).
(embodiment 1～4, comparative example 1)
At first, as embodiment 1, by material component as described below, according to conventional method, by copying the fourdrinier wire formula paper machine that the paper width is 3.7m, copy the chart speed degree according to what 700m/ divided, carry out neutrality and copy slurry, according to the size press chemicals component that provides below, on two faces of paper, be 1.5g/m according to coating amount
2Mode carry out size press, make the paper of embodiment 1.
(material component)
Pulp content: broad leaf tree is shone paper pulp 90%
Coniferous tree is shone paper pulp 10%
Filler: alkyl ketene dimer (AKD) 10% (paper relatively)
Sizing material agent: alkyl dienone dimer 0.09% (paper relatively)
Fluorescent whitening agent: Tinopal ABP (trade name: 0.1% (paper relatively) liquid state)
(diaminourea stilbene sulfone (diaminostibenesulfone) derivative)
(size press chemicals component)
PVA： 10％
Oxidised maize starch: 90%
The papery of the paper of the embodiment 1 that obtains, the level ground amount is 70g/m
2, whiteness is 94.5%.
By evaluation method described below, the paper of present embodiment 1 is carried out the performance degradation test that fluorescent whitening agent disbonded test and light cause.It the results are summarized in the table 1.In addition, in other whole embodiment and comparative example, evaluation method is identical.
(1) fluorescent whitening agent disbonded test
By filter paper (advantech Japan qualitative filter paper No.1), with hand on the trial target with the intensity friction of degree that can not be damaged 2 times, in the dark, to this filter paper with trial target contact-making surface irradiation ultraviolet radiation lamp (TOKI JAPAN, F20TIOBLB (trade name)), by visual examination whether fluorescence takes place.
Its result is carried out the evaluation of 3 following grades.
A: do not have, or almost do not have
B: have slightly
C: obviously have
In fact, when unusable paper, because can not be as this test, the paper that will have frictional property carries out strong like this friction, so under the situation of A and B grade, can be judged to be in the contacting of paper and human body, fluorescent whitening agent can not impact human body.
(2) the whiteness degradation experiment that causes of light
Measure the front and back whiteness (based on ISO2470) of 8 hours sunrays of penetrating window glass irradiation, its difference is the whiteness degeneracy.Though certainly the whiteness degeneracy is low more good more, because in fact, just calculate to which type of degree, be according to purposes and difference, so this test is till the relative value of obtaining each trial target.
Then, as embodiment 2～4 and comparative example 1, the fluorescent whitening agent addition is 0.1%, and size press chemicals coating amount is 1.5g/m
2Certain value, the PVA of size press chemicals: oxidised maize starch is 0: 100 (comparative example 1), 30: 70 (embodiment 2), 50: 50 (embodiment 3), 100: 0 (embodiment 4), others are identical with embodiment 1, measure fluorescent whitening agent disbonded test and whiteness degeneracy.Its result and embodiment 1 the results are summarized in the table 1.
Table 1
| Comparative example | Embodiment | |||||
| 1 | 1 | 2 | 3 | 4 | ||
| Fluorescent whitening agent addition (% of anti-paper) | 0.1 | 0.1 | 0.1 | 0.1 | 0.1 | |
| The size press chemicals | PVA: oxidised maize starch | 0∶100 | 10∶90 | 30∶70 | 50∶50 | 100∶0 |
| Coating amount g/m 2(two sides) | 1.5 | 1.5 | 1.5 | 1.5 | 1.5 | |
| The whiteness degeneracy | Sunray pre-irradiation whiteness | 94.5 | 94.5 | 94.5 | 94.5 | 94.5 |
| Sunray irradiation back whiteness | 91.6 | 91.7 | 91.8 | 92.0 | 92.2 | |
| Whiteness behind the pre-irradiation poor | 2.9 | 2.8 | 2.7 | 2.5 | 2.3 | |
| Fluorescent whitening agent disbonded test result | C | B | B | A | A | |
The situation following as can be known according to the result of table 1.That is be 0.1% at the fluorescent whitening agent addition, and size press chemicals coating amount is 1.5g/m,
2Certain value the time, the PVA in the size press chemicals coating amount and the proportion of oxidised maize starch can not impact whiteness, still, if the proportion of PVA increases, proportional therewith, the whiteness degeneracy diminishes at leisure, and the fluorescent whitening agent result of the test is also good simultaneously.So, according to the result of table 1, being fixed as 0.1% at the fluorescent whitening agent addition, size press chemicals coating amount is fixed as 1.5g/m
2The time, according to the result of fluorescent whitening agent disbonded test as can be known, if the PVA proportion in the size press chemicals then can obtain good result more than or equal to 10%.
(embodiment 5～7, comparative example 2 and 3)
Below, make respectively with the fluorescent whitening agent addition be fixed as 0.1%, the PVA of size press chemicals: oxidised maize starch was fixed as 30: 70, and the coating amount that makes the size press chemicals is according to 0g/m
2(comparative example 2), 0.5g/m
2(comparative example 3), 0.6g/m
2(embodiment 5), 2.0g/m
2(embodiment 6) change, and in addition, are 0.6g/m at the coating amount of size press chemicals
2The time, the paper of oxidised maize starch=10: 90 (embodiment 7), identical for corresponding paper with the occasion of embodiment 1, carry out whiteness, fluorescent whitening agent disbonded test and the test of whiteness degeneracy.The result of its result and embodiment 2 comes together in the table 2.
Table 2
| Comparative example | Embodiment | ||||||
| 2 | 3 | 5 | 2 | 6 | 7 | ||
| Fluorescent whitening agent addition (% of anti-paper) | 0.1 | 0.1 | 0.1 | 0.1 | 0.1 | 0.1 | |
| Sizing material squeezing chemicals | PVA: oxidised maize starch | - | 30∶70 | 30∶70 | 30∶70 | 30∶70 | 10∶90 |
| Coating amount g/m 2(two sides) | 0 | 0.5 | 0.6 | 1.5 | 2.0 | 0.6 | |
| The whiteness degeneracy | Sunray pre-irradiation whiteness | 94.5 | 94.5 | 94.5 | 94.5 | 94.0 | 94.5 |
| Sunray irradiation back whiteness | 91.0 | 91.5 | 91.6 | 91.8 | 92.5 | 91.6 | |
| Whiteness behind the pre-irradiation poor | 3.5 | 3.0 | 2.9 | 2.7 | 1.5 | 2.9 | |
| Fluorescent whitening agent disbonded test result | C | C | B | B | A | B | |
The situation following as can be known according to the result of table 2.Promptly, according to comparative example 2,3, embodiment 5,2 and 6 result, having invariably of the coating of size press chemicals can impact whiteness, still, is 0.1% at the fluorescent whitening agent addition, and the PVA of sizing material chemicals: oxidised maize starch=30: 70 o'clock, along with the increase of the coating amount of size press chemicals, the whiteness degeneracy diminishes, and fluorescent whitening agent disbonded test result is also good.
In addition, be fixed as 0.1% at the fluorescent whitening agent addition, size press chemicals coating amount is fixed as 0.6g/m
2The time, no matter the PVA of sizing material chemicals: the situation (embodiment 5) of oxidised maize starch=30: 70, or 10: 90 situation (embodiment 7), can not confirm that whiteness degeneracy and fluorescent whitening agent disbonded test result have substantial difference.So, according to the result of table 2 as can be known, if the coating amount of size press chemicals is more than or equal to 0.6g/m
2, the PVA proportion in the size press chemicals is more than or equal to 10%, and then whiteness degeneracy and fluorescent whitening agent disbonded test result are good.In addition, here, to the coating amount in the size press chemicals, until 2.0g/m
2Test, if coating amount is too much, then particularly when being used for electrophotographic transfer paper, because photographic fixing, the curl characteristics variation after duplicating are less than or equal to 5.0g/m so should stop at
2Value.
(embodiment 8～10, comparative example 4,5)
In addition, make the PVA with the size press chemicals respectively: oxidised maize starch=30: 70, the coating amount of size press chemicals are 1.5g/m
2Value fix, the fluorescent whitening agent addition is changed according to 0% (comparative example 4), 0.05% (embodiment 8), 0.2% (embodiment 9), 0.3% (embodiment 10), in addition, the PVA of size press chemicals: oxidised maize starch=30: 70, fluorescent whitening agent addition become 0.2%, the coating amount of size press chemicals is 0.5g/m
2The time (comparative example 5) paper, identical at each paper with the occasion of embodiment 1, carry out whiteness, fluorescent whitening agent disbonded test and whiteness degradation experiment.Its result and embodiment 2 the results are summarized in the table 3.
Table 3
| Comparative example | Embodiment | Comparative example | |||||
| 4 | 8 | 2 | 9 | 10 | 5 | ||
| Fluorescent whitening agent addition (% of anti-paper) | 0 | 0.05 | 0.1 | 0.2 | 0.3 | 0.2 | |
| Sizing material squeezing chemicals | PVA: oxidised maize starch | 30∶70 | 30∶70 | 30∶70 | 30∶70 | 30∶70 | 30∶70 |
| Coating amount g/m 2(two sides) | 1.5 | 1.5 | 1.5 | 1.5 | 1.5 | 0.5 | |
| The whiteness degeneracy | Sunray irradiation back whiteness | 85.0 | 92.0 | 94.5 | 96.0 | 98.0 | 96.0 |
| Sunray irradiation back whiteness | 84.0 | 89.5 | 91.8 | 93.1 | 94.9 | 92.9 | |
| Whiteness behind the pre-irradiation poor | 1.0 | 2.5 | 2.7 | 2.9 | 3.1 | 3.1 | |
| Fluorescent whitening agent disbonded test result | - | A | B | B | B | C | |
According to the following as can be known situation of the result of table 3.That is, in the addition of fluorescent whitening agent was 0% comparative example 4, the whiteness of light was degenerated minimum, but whiteness be 85% of a minimum.Relative this situation, addition at fluorescent whitening agent is in 0.05% (embodiment 8), whiteness is 92%, increase along with the addition of fluorescent whitening agent, whiteness also improves, and when the addition of fluorescent whitening agent was 0.3% (embodiment 10), whiteness arrived 98%, but the whiteness degeneracy also increases simultaneously.So if combined with fluorescent brightening agent disbonded test result investigates, then as can be known at the PVA with the size press chemicals: the coating amount of oxidised maize starch=30: 70, size press chemicals is 1.5g/m
2Value fixedly the time, best, the fluorescent whitening agent addition more than or equal to 0.05%, be less than or equal between 0.3%.On the other hand, the fluorescent whitening agent disbonded test is the result show, because sizing material chemicals coating amount is identical, so the addition of fluorescent whitening agent is few more good more.
In addition, be 0.2% at the fluorescent whitening agent addition, the PVA of size press chemicals: the coating amount of oxidised maize starch=30: 70, size press chemicals is 0.5g/m
2Less situation in (comparative example 5), the degenerate occasion of the embodiment 9 more identical than fluorescent whitening agent addition of the whiteness of light is poor, the embodiment 10 more with the fluorescent whitening agent addition is identical, and the result is outside allowed band in the fluorescent whitening agent disbonded test.So as can be known, be 0.2% at the addition of fluorescent whitening agent, the PVA of size press chemicals: under the situation of oxidised maize starch=30: 70, the coating amount of size press chemicals must surpass 0.5g/m at least
2
Claims (4)
1. sheet of high whiteness degree, wherein, on the surface of the paper that adds fluorescent whitening agent, be provided with the layer that forms by the film water-soluble resin or by the mixture of film water-soluble resin and another water-soluble resin form layer, and the whiteness of paper is in 92～98% scope.
2. sheet of high whiteness degree according to claim 1 is characterized in that, the coating amount of the above-mentioned film water-soluble resin on the two sides is more than or equal to 0.6g/m
2, be less than or equal to 5g/m
2
3. sheet of high whiteness degree according to claim 1 and 2 is characterized in that, above-mentioned film water-soluble resin is from polyvinyl alcohol, polyacrylamide, and that selects in the carboxymethyl cellulose is at least a.
4. according to any one the described sheet of high whiteness degree in the claim 1～3, it is characterized in that above-mentioned paper is electrofax transfer printing and the general paper of ink mist recording.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| PCT/JP2004/017739 WO2006057064A1 (en) | 2004-11-29 | 2004-11-29 | Sheet of high whiteness degree |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101068982A true CN101068982A (en) | 2007-11-07 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNA2004800445122A Pending CN101068982A (en) | 2004-11-29 | 2004-11-29 | Sheet of high whiteness degree |
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| Country | Link |
|---|---|
| JP (1) | JPWO2006057064A1 (en) |
| CN (1) | CN101068982A (en) |
| WO (1) | WO2006057064A1 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106087546A (en) * | 2016-06-23 | 2016-11-09 | 河南鑫昌新材料科技股份有限公司 | A kind of film coating and preparation method thereof |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101855401B (en) * | 2007-04-05 | 2013-01-02 | 阿克佐诺贝尔股份有限公司 | Process for improving optical properties of paper |
| JP5571927B2 (en) * | 2009-09-16 | 2014-08-13 | 大王製紙株式会社 | Coated paper |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH08188991A (en) * | 1994-11-07 | 1996-07-23 | Japan Synthetic Rubber Co Ltd | Fluorescent brightener for paper, paper-coating composition, surface-treated paper and filled paper |
| JPH11227324A (en) * | 1998-02-12 | 1999-08-24 | Hokuetsu Paper Mills Ltd | Recording paper and manufacture thereof |
| JP4034461B2 (en) * | 1998-04-21 | 2008-01-16 | 三菱製紙株式会社 | Inkjet recording paper |
| JP2001105718A (en) * | 1999-10-12 | 2001-04-17 | Olympus Optical Co Ltd | Ink jet printing recording sheet |
-
2004
- 2004-11-29 JP JP2006546524A patent/JPWO2006057064A1/en active Pending
- 2004-11-29 WO PCT/JP2004/017739 patent/WO2006057064A1/en active Application Filing
- 2004-11-29 CN CNA2004800445122A patent/CN101068982A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106087546A (en) * | 2016-06-23 | 2016-11-09 | 河南鑫昌新材料科技股份有限公司 | A kind of film coating and preparation method thereof |
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| Publication number | Publication date |
|---|---|
| JPWO2006057064A1 (en) | 2008-06-05 |
| WO2006057064A1 (en) | 2006-06-01 |
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