CN1343568A - Method for mfg. support body for lithographic plate printing plate - Google Patents
Method for mfg. support body for lithographic plate printing plate Download PDFInfo
- Publication number
- CN1343568A CN1343568A CN 01131242 CN01131242A CN1343568A CN 1343568 A CN1343568 A CN 1343568A CN 01131242 CN01131242 CN 01131242 CN 01131242 A CN01131242 A CN 01131242A CN 1343568 A CN1343568 A CN 1343568A
- Authority
- CN
- China
- Prior art keywords
- aluminium alloy
- treatment
- plate
- alloy plate
- support body
- 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
Links
Landscapes
- Printing Plates And Materials Therefor (AREA)
- Photosensitive Polymer And Photoresist Processing (AREA)
- Materials For Photolithography (AREA)
Abstract
The invention discloses a method of manufacturing the substrate for the lithographic plate comprises a casting process wherein an ingot is cast from a molten aluminum alloy (1), a rolling process wherein surface grinding, heating, hot rolling and cold rolling processings are applied to the ingot sequentially to prepare an aluminum alloy sheet of a thickness 0.1-0.5 mm (2), a planeness correcting process wherein a planeness correcting processing is applied to the aluminum alloy sheet (3) and a surface treating process wherein surface roughening and anodizing treatments are applied to the aluminum alloy sheet after the planeness correcting processing (4). The temperature of the heating processing in the rolling process is made 350 DEG C. or above, while the temperature after the hot rolling processing is made 200-350 DEG C. and further made 150 DEG C. or below within five hours after the hot rolling processing. According to the method of the invention, it can abbreviate the neccessary soaking treatment and annealing theatment processes used heretofore and to provide a manufacturing method of a substrate for a lithographic plate being excellent in the resistance to a severe ink stain, at a low cost and with little energy.
Description
Technical field
The invention relates to and aluminium alloy plate carried out at least surface coarsening is handled and the manufacture method of the support body for lithographic plate printing plate of anodized, particularly about the manufacture method of the good support body for lithographic plate printing plate of the cruel ink pollution of anti-mistake.
Background technology
In the past, the manufacture method of support body for lithographic plate printing plate was that a side surface or the both side surface of aluminium alloy plate are carried out the surface coarsening processing, carried out anodized then, to improve its mar proof.On this support body for lithographic plate printing plate, photosensitive layer is set, makes original edition of lithographic printing plate.In addition, the vacuum when making a plate in order to shorten is adhered to the time, also is provided with sometimes to be called as the small concavo-convex of no photosphere on the surface of photosensitive layer.
The original edition of lithographic printing plate of making is like this handled through plate-making such as image exposure, video picture, washings, becomes lithographic plate.The method of image exposure can adopt following method: the lithographic film of printing image of fitting, exposure then, the method for formation image portion and non-image portion; Adopt laser or with the method for image projection write direct image portion or non-image portion, form the method etc. of the difference of image portion and non-image portion.
Behind the image exposure, when carrying out the video picture processing, undissolved photosensitive layer forms image portion as ink receptors, and the dissolved part of removing of photosensitive layer, aluminium alloy or anode oxide film below it expose, and form non-image portion as the water acceptor.After the video picture, to carry out hydrophilicity-imparting treatment as required sometimes, glue draws and printing down processing etc.
The lithographic plate of making like this is installed on the printing cylinder of cylinder type of printing machine.When printing cylinder was supplied with printing ink and fountain solution, printing ink was attached in the oil loving image portion, and water is attached on hydrophilic non-image, and the printing ink of image portion is transferred on the blanket cylinder, by blanket cylinder image is printed onto on the paper.But, sometimes on non-image, can adhere to point-like or circular printing ink, the result produces point-like or circular stain (crossing cruel ink pollution) on paper.
In order to address the above problem, many schemes had been proposed once in the past.Wherein, disclosing more is the method that limits alloying component contained in the employed aluminium alloy plate.For example, limit Mg, Mn, Si, Ga, Ti, (spy opens flat 5-309964 to the method for alloying components such as Cu, Te Kaiping 3-177528 etc.), (spy opens flat 4-254545 to the method for the ratio of qualification Fe and Si, Te Kaiping 7-197162 etc.), limit the method (spy opens flat 4-165041 etc.) of the solid solution capacity of Fe, the method that limits monomer Si amount (is speciallyyed permit No. 2544215, specially permit No. 2031725 etc.), (spy opens flat 4-165041 to limit the quantity of intermetallic compound and the method for size and distribution thereof, Te Kaiping 3-234594, specially permit No. 2544215, Te Kaiping 4-254545 etc.), (spy opens flat 7-197393 to the method for the feature that limits anode oxide film of matching with the composition of aluminium, Te Kaiping 7-26393 etc.).But these methods are all limited the material of aluminium, and the free degree that causes material to be selected reduces.
In addition, the aluminium material that can be used as support body for lithographic plate printing plate can be enumerated JIS1050, JIS1100, JIS1070, Al-Mg are that alloy, Al-Mn are that alloy, Al-Mn-Mg are that alloy, Al-Zr are that alloy, Al-Mg-Si are alloy etc.
These alloys, normally the metal that adds other regulation in based on the raw material of aluminium carries out molten refining, make the alloy liquation of alloying component with regulation, carry out purified treatment then, during purified treatment, in order to remove the unwanted gases such as hydrogen in the alloy liquation, need carry out following processing usually: flux is handled; Use the degassing of Ar gas, Cl gas etc. to handle; Use rigid media filter such as earthenware filter, porous ceramic filter or filter as the filter of filtering material or glass cloth filter etc. with alumina wafer, alumina balls etc.; The degassing is handled and is filtered the processing of combination etc.These purified treatment are the defective in order to prevent the defective that produces owing to foreign matters such as the non-metallic inclusion in the liquation, oxides and to prevent to produce owing to the gas that dissolves in the liquation mostly.
Use is cast by the above liquation that has carried out purified treatment.Casting method has, and is the fixing method of casting mold of use of representative with the DC casting, and is the method that the use of representative drives casting mold with the continuous casting process.
When using the DC casting, cooling velocity is set in 1-300 ℃/second scope.In this cooling procedure, the part of above-mentioned alloying component is solidly soluted in the aluminium, and the composition that is not solidly soluted in the aluminium forms various intermetallic compounds, remains in the ingot casting.Adopt the DC casting to make the ingot casting of thickness of slab 300-800mm, adopt conventional method to machine away (flush cut) 1-30mm, preferably 1-10mm from the top layer of this ingot casting.Then, carry out equal heat treatment as required.Through equal heat treatment, unstable compounds becomes more stable compound in the intermetallic compound, and perhaps a part is solidly soluted in the aluminium.But this equal heat treatment need be heated to high temperature with aluminium alloy, and must keep the regular hour under this temperature.Therefore expend a large amount of energy and time.
All after the heat treatment, then carry out the cold-rolling treatment that hot rolling is handled.At this moment, before and after the cold-rolling treatment or in cold-rolled process, can also be called as the heat treatment of annealing.By annealing, can remove the processing strain that accumulates in the aluminium alloy, be processed into aluminium alloy plate with the tensile strength that is suitable for lithographic plate.People have known when annealing more than 400 ℃, the separating out of Si that is solid-solubilized in the aluminium can be suppressed to bottom line.But the high temperature that is heated to more than 400 ℃ need consume a large amount of energy and time.
If the processing heat that produces in the time of can utilizing hot rolling to handle is removed the processing strain equally with annealing, just can make the aluminium alloy plate of lithographic printing plate-use with less energy and short time.But the processing heat that produces when utilizing hot rolling merely is difficult to obtain to be enough to suppress the temperature (more than 400 ℃) that monomer Si separates out.Therefore, common hot rolling is handled and in fact just is equivalent to the situation of annealing at a lower temperature, separates out a lot of monomer Si easily.
By cold-rolling treatment aluminium alloy plate is processed into the thickness (0.1-0.5mm) of regulation, then, uses flattening devices such as roller leveller, tension level(l)er to improve its flatness as required.
The method for coarsening surface of aluminium alloy plate can be enumerated the method for the Ginding process of machinery, electrochemical Ginding process and both combinations etc.The Ginding process of machinery for example has ball polishing, wire polishing, brush polishing and hydro-abrasion method etc.Electrochemical Ginding process generally adopts the alternating current electrolysis etch, and electric current uses special alternating currents such as common sine wave AC electric current or square wave.In addition, as the pre-treatment of electrochemical milling method, can also carry out corrosion treatment with NaOH etc.
Electrochemical polishing is suitable for the continuous processing of lamellar, thereby it uses increase gradually recently.But when aluminium alloy plate was carried out electrochemical milling, generating with aluminium hydroxide on the surface of aluminium alloy plate was the dirt of main component.
As suppressing the method that this dirt produces, the method for using the high-frequency ac electrolysis electric current of 140-400Hz is disclosed among the US4548683.Adopt this method might suppress the generation of dirt, form the pitted skin of homogeneous, but this has only under special circumstances and could realize, in fact almost can not suppress the generation of dirt.
Aluminium alloy plate through electrochemical milling, carry out anodized, carrying out silicate in case of necessity handles, painting photosensitive liquid and carry out drying is provided with photosensitive layer then, is processed into photosensitive original edition of lithographic printing plate, if but dirt left behind after the electrochemical milling, will sneak in the anode oxide film, anode oxide film produces defective etc., causes printing performance to reduce.
Disclose the method for a kind of removal dirt (デ ス マ ッ ト) among the special public clear 56-11316, the feature of this method is in that the dirt that generates on the aluminium alloy plate surface is contacted with the sulfuric acid solution of 15-60% (weight), its dissolving to be removed.In addition, specially permit and disclose a kind of method of removing crude removal in No. 2577594, promptly, at first above with pH10, temperature 25-60 ℃ aqueous slkali dissolving is because the dirt that the electrolytic surface alligatoring generates on the aluminium alloy plate surface, be that the solution of main body dissolves and removes with the sulfuric acid of concentration 50-400g/ liter, temperature 25-65 ℃ then, make the meltage of aluminum substrate reach 0.03-0.20g/m
2
But preceding a kind of method is not owing to have and use aqueous slkali, and the removal of dirt is insufficient easily, in addition, lip-deep electrolytic surface alligatoring shape heterogeneity, thereby the adhesion deficiency of photosensitive layer and aluminium alloy plate, perhaps printing performance such as stain resistance is insufficient.A kind of method in back is by also removing the dirt that the electrolytic surface alligatoring produces effectively with aqueous slkali, but can not remove the unwanted intermetallic compound that exists on the aluminium alloy plate surface, unless thereby strictly control the composition of aluminum alloy materials, otherwise be difficult to improve the cruel ink pollution of anti-mistake.In addition,, thereby handle and need the time, consider it is disadvantageous from the productivity ratio angle because the temperature of aqueous slkali is 25-60 ℃.
In addition, as removing the dirt that the electrolytic surface roughening treatment is produced fully, simultaneously can also remove the unwanted intermetallic compound on aluminium alloy plate surface, can not dwindle the range of choice of aluminum alloy materials, the manufacturing process that does not need strict control aluminum alloy materials, can make the method for the good support body for lithographic plate printing plate of the cruel ink pollution of anti-mistake, inventor's past attempts had proposed before carrying out anodized, more than pH10, temperature 60-80 ℃ aqueous slkali is cleaned the aluminium alloy plate surface, and then with concentration 300-800g/ liter, temperature 65-90 ℃ acid solution is cleaned, and removes crude removal and causes extremely method of the unwanted intermetallic compound of ink pollution (the special 2000-203640 of hope) and equipment (the special 2000-123805 of hope) thereof.
Use this method and apparatus, can remove the dirt that the electrolytic surface roughening treatment is produced fully, can also remove simultaneously the unwanted intermetallic compound (α-AlFeSi) on aluminium alloy plate surface, therefore can not reduce the range of choice of aluminum alloy materials, do not need the manufacturing process of aluminum alloy materials is carried out strictness control yet, can make the good support body for lithographic plate printing plate of the cruel ink pollution of anti-mistake.But,, caused the monomer Si of cruel ink pollution not remove fully equally though can remove the intermetallic compounds such as α-AlFeSi that caused cruel ink pollution with comparalive ease.
Summary of the invention
The objective of the invention is, the method for making the good support body for lithographic plate printing plate of the cruel ink pollution of anti-mistake at lower cost with less energy consumption is provided, to simplify technology in the past.
To achieve these goals, the inventor has carried out deep research, found that, if the temperature after the hot rolling processing is set in more than 350 ℃, temperature after the hot rolling end is set at 200-350 ℃, hot rolling handled be set at below 150 ℃ with interior temperature in back 5 hours, just can omit equal heat treatment and annealing in process, suppress separating out of monomer Si, before carrying out anodized, be provided with the acid solution of high temperature and clean the acid treatment operation of handling, can remove crude removal and monomer Si effectively, α-AlFeSi, and can further reduce monomer Si, finished the present invention based on above-mentioned discovery.
That is, the present invention is:
＜1〉manufacture method of support body for lithographic plate printing plate, this method is made up of following operation: (1) is cast as the casting process of ingot casting by molten aluminium alloy, (2) this ingot casting being carried out flush cut successively handles, heat treated, hot rolling processing and cold-rolling treatment, make the rolling process of the aluminium alloy plate of thick 0.1-0.5mm, (3) this aluminium alloy plate is carried out the flatness correction process of flatness correction process, (4) after the flatness correction process above-mentioned aluminium alloy plate carried out that surface coarsening is handled and the surface treatment procedure of anodized, it is characterized in that, heat treated temperature in the rolling operation is set in more than 350 ℃, temperature after above-mentioned hot rolling handled is set at 200-350 ℃, above-mentioned hot rolling is handled being set at below 150 ℃ with interior temperature in back 5 hours.
＜2〉above-mentioned＜1〉manufacture method of described support body for lithographic plate printing plate, it is characterized in that the monomer Si amount that is contained in the aluminium alloy plate after the cold-rolling treatment in the rolling operation is below 70ppm.
＜3〉above-mentioned＜1〉or＜2〉described support body for lithographic plate printing plate manufacture method, it is characterized in that, surface coarsening in the above-mentioned surface treatment procedure is handled and is comprised caustic corrosion treatment process, electrolytic surface roughening treatment operation at least and remove the dirt treatment process, and described removal dirt treatment process comprises the alkali treatment operation of utilizing aqueous slkali to carry out alkali treatment at least and carries out acid-treated acid treatment operation with 60-90 ℃ acid solution.
The preferred implementation of invention
The manufacture method of support body for lithographic plate printing plate of the present invention is made up of following operation at least: (1) is cast as the casting process of ingot casting by molten aluminium alloy, (2) this ingot casting is carried out flush cut processing, heat treated, hot rolling processing and cold-rolling treatment, make the rolling process of the aluminium alloy plate of thick 0.1-0.5mm, (3) this aluminium alloy plate is carried out the flatness correction process of flatness correction process, after (4) flatness correction process above-mentioned aluminium alloy plate carried out that surface coarsening is handled and the surface treatment procedure of anodized.
In the method, the heat treated temperature in the described rolling process is set in more than 350 ℃, and the temperature after described hot rolling is handled is 200-350 ℃, and it is below 150 ℃ with interior temperature that described hot rolling is handled back 5 hours.The monomer Si amount that is contained in the aluminium alloy plate after the cold-rolling treatment in the described rolling process is below 70ppm.
In addition, surface coarsening in the described surface treatment procedure is handled and preferably is made up of following operation at least: 1. caustic corrosion treatment process, 2. electrolytic surface roughening treatment operation, 3. remove the dirt treatment process, described removal dirt treatment process comprises alkali treatment operation and the acid treatment operation of handling with 60-90 ℃ acid at least.
Explain the manufacture method of support body for lithographic plate printing plate of the present invention below.
＜1. casting process, rolling process, flatness correction process 〉
At first, be cast as ingot casting (casting process) with conventional method by molten aluminium alloy.Then, carry out flush cut and handle, the top layer of ingot casting is machined away 1-30mm.Ingot casting is heated to more than 350 ℃, preferably is heated to 380-450 ℃ (heat treated), carry out hot rolling, make the aluminium alloy plate (hot rolling processing) of thickness of slab 1-10mm.When carrying out hot rolling, finishing temperature is 250-350 ℃, preferably 280-340 ℃, is cooled to room temperature after the finish to gauge.During cooling, in order to suppress separating out of monomer Si, hot rolling finishes should be suppressed at below 150 ℃ with interior temperature in back 5 hours.The method of cooling can adopt air cooling, utilize the methods such as cooling of ROLLING OIL.
The aluminium alloy plate that is cooled to room temperature is carried out cold rolling, make thickness of slab reach 0.1-0.5mm (cold-rolling treatment).Through the rolling operation, the monomer Si on aluminium alloy plate surface amount should reach below the 70ppm, preferably reaches below the 50ppm.Cold rolling back is adopted conventional method to carry out flatness and is corrected (flatness correction process).
Monomer Si amount contained in the aluminium alloy plate can be measured as follows.For example, at first use the aluminium alloy plate of the dissolving with hydrochloric acid 20g of excess quantity.Use the hydrochloric acid of excess quantity, aluminium and the dissolving of other alloying component have only monomer Si not dissolve, and stay as residue and residual.With molecular filter the hydrochloric acid solution that contains this residue is filtered,, measure its quantity, obtain monomer Si amount isolated residue drying.
＜2. surface treatment procedure 〉
Aluminium alloy plate through the flatness correction process is carried out chemical surface roughening treatment (surface treatment procedure of record in the claim 3), and this chemical surface roughening treatment is made up of following operation at least: 1. caustic corrosion treatment process, 2. electrolytic surface roughening treatment operation, 3. remove the dirt treatment process.
In addition, carrying out before caustic corrosion handles, can also use float stone suspension, utilize brushing grain etc. that aluminium alloy plate is carried out the mechanical surface alligatoring.After the mechanical surface alligatoring,, remove the surface and go up residual polishing particles, preferably carry out caustic corrosion and handle (caustic corrosion treatment process) for the concaveconvex shape that makes the surface becomes gently.Employed alkaline agent is handled in caustic corrosion can adopt NaOH, potassium hydroxide, sodium metasilicate, sodium carbonate, sodium aluminate, gluconic acid sodium salt etc., and the concentration of alkaline agent is advisable at 0.01-25% (weight).The caustic corrosion treatment temperature adopts 25-80 ℃, in order to boost productivity, preferably adopts 60-80 ℃, and etching extent is 1-15g/m preferably
2The time that caustic corrosion is handled was advisable with 2 seconds-5 minutes, in order to boost productivity, and 2-10 second preferably.
When carrying out caustic corrosion and handling, residual on the surface of aluminium alloy plate have a material (dirt) that is not dissolved in alkali, in order to remove these dirts, preferably removes the dirt processing with nitric acid, sulfuric acid etc.In addition, handle as long as carry out such removal dirt, the following acid with 60-90 ℃ is set carries out acid-treated operation, when carrying out anodized subsequently, just can form good anode oxide film, make the better support body for lithographic plate printing plate of the cruel ink pollution of anti-mistake.
In order to improve image portion and adhesion photosensitive layer, perhaps improve the water-retaining property of non-image portion, often in hydrochloric acid or salpeter solution, carry out electrolytic surface roughening treatment (electrolytic surface roughening treatment operation).This electrolytic surface roughening treatment is preferably carried out with the form of stack on the above-mentioned surface that obtains with mechanical surface alligatoring such as brushing grains, perhaps carries out after caustic corrosion is handled and removed the dirt treatment process.
The alternating current electrolysis corrosion is preferably carried out in the electrolytic surface roughening treatment in based on the electrolyte of hydrochloric acid or nitric acid.The frequency of alternating current electrolysis electric current is advisable at 0.1-100Hz, preferably 0.1-1.0Hz or 10-60Hz.
In the present invention, described " main body " is meant, in acid or aqueous slkali, reaches more than 30% (weight) with respect to acidity or alkali composition total amount as the acid of main body or the content of alkali, preferably more than 50% (weight).
The concentration of electrolyte (acid concentration) is upgraded to suitable at 3-150g/, preferably the 5-50g/ liter.The meltage of the aluminium in the electrolytic cell is advisable below 50g/ rises, preferably the 2-20g/ liter.As required, can add additive in electrolyte, in the occasion of producing in enormous quantities, concentration of electrolyte is difficult to control sometimes, therefore is necessary suitably to select the value volume and range of product of additive.Current density is at 5-100A/dm
2Be advisable, preferably 10-80A/dm
2Power supply wave shape can suitably be selected according to the composition of the aluminium alloy plate of desired quality and use, preferably uses the special alternation waveforms of record among special public clear 56-19280, the special public clear 55-19191 etc.These waveforms and electrolyte condition can becoming to grade and suitably select according to the aluminium alloy of electric weight and desired quality and use.
As mentioned above, on aluminium alloy plate surface, there are dirt and intermetallic compound through the electrolytic surface alligatoring.Therefore, in the present invention, in order to remove this dirt and intermetallic compound, the removal dirt that preferably carried out for two steps is handled (removing the dirt treatment process), that is, after using aqueous slkali to carry out alkali treatment (alkali treatment operation), use acid to carry out acid treatment (acid treatment operation) at least.
At first, the alkaline agent that uses in the alkali treatment operation has many kinds such as NaOH, uses preferably that pH10 is above, the alkaline agent solution of temperature 25-80 ℃ handles.Consider from the angle of boosting productivity,, can finish processing at the utmost point of 1-10 second in the short time, thereby preferentially select this temperature range for use if temperature is set at 60-80 ℃.The method of alkali treatment can adopt infusion process, spray process or aqueous slkali is coated on method on the aluminium alloy plate.
Subsequently, carry out acid treatment (acid treatment operation) with acid solution.The acid of using in the acid solution is sulfuric acid preferably.Acid concentration (occasion at sulfuric acid is a sulfuric acid concentration), when adopting the acid-base titration device to measure, be upgraded to 250-800g/ suitable, 300-500g/ liter preferably.Treatment temperature is advisable at 60-90 ℃.When concentration was low, though can remove crude removal, the removal of intermetallic compound particles was insufficient sometimes.In addition, if the temperature of acid solution is lower than 60 ℃, the effect of removing of intermetallic compound particles reduces sometimes.Particularly in order to remove at short notice, temperature should be at 70-90 ℃, preferably 75-90 ℃.Acid-treated method, same with the occasion of above-mentioned alkali treatment, can adopt infusion process, spray process or the method etc. of coating acid solution on aluminium alloy plate.
In the material that the cruel ink pollution of anti-mistake is had a negative impact (intermetallic compound and monomer Si), for intermetallic compound (α-AlFeSi etc.), its major part can be removed by above-mentioned acid treatment, and for monomer Si, can only remove a part, depend merely on acid treatment and it can not be removed fully.But, adopt the manufacture method of support body for lithographic plate printing plate of the present invention, in manufacturing process's (rolling process) of above-mentioned aluminium alloy plate, suppressed separating out of monomer Si to greatest extent, though thereby adopt acid treatment can only remove a part of monomer Si, but compare with independent acid-treated occasion, final monomer Si amount has reduced, and can suppress cruel ink pollution fully.
After investigating acid treatment, precipitate into the increase and decrease that lip-deep monomer Si measures, can also get a part, with its surfaces of analysis such as electron probe microanalysers (EPMA) from aluminium alloy plate.For example, use EPMA, carry out surface analysis in the area to the 180 μ m * 180 μ m in 5 zones (5 visuals field) on aluminium alloy plate surface, have the rate or an amount of separating out according to what their mean value was obtained monomer Si.
For carrying out anodized by the above aluminium alloy plate of removing the dirt processing with aqueous slkali and acid solution.Through anodized, form anode oxide film in skin section.The amount of formed anode oxide film is at 0.1-10g/m
2Be advisable, preferably 0.3-5g/m
2In addition, other condition of anodized need be carried out different settings according to employed electrolyte (sulfuric acid, phosphoric acid, oxalic acid, chromic acid etc.), cannot treat different things as the same, in general, (acid concentration is 1-80% (weight) to the concentration of electrolyte, the liquid temperature is 5-70 ℃, and current density is 0.5-60A/dm
2, voltage is 1-100V, electrolysis time is 1 second-5 minutes.
Through the aluminium alloy plate after above-mentioned each treatment process, coiled into web-like, make support body for lithographic plate printing plate.Formed anode oxide film itself is very stable, has very high hydrophily, thereby can directly be coated with photosensitive material on this anode oxide film surface, forms photosensitive layer, in addition, also can carry out surface treatment as required.Described surface treatment for example can be enumerated, and forms silicate layer with alkali silicate on the surface of aluminium alloy plate, and the inter coat that is made of hydrophilic macromolecular compounds etc. perhaps is set on the aluminium alloy plate surface.At this moment, the coating weight of inter coat 1-150mg/m preferably
2
On the support body for lithographic plate printing plate surface that inter coat is set so as required, photosensitive layer is set, makes original edition of lithographic printing plate.In addition, can also adopt method such as coating that matt layer is set on photosensitive layer.Above-mentioned anodized, coating inter coat, photosensitive coated layer, drying and the matt layer of coating preferably carry out continuously.
The original edition of lithographic printing plate that obtains is like this made lithographic plate through operations such as image exposure and video pictures, is installed on the printing machine.
Be described more specifically the present invention below by embodiment, but the invention is not restricted to these embodiment.
The specific embodiment
Embodiment 1-4, comparative example 1-3
Raw material aluminium alloy plate by the support body for lithographic plate printing plate of molten aluminium alloy manufacturing embodiment 1-4 with alloying component shown in the table 1 and comparative example 1-3.The manufacture method of aluminium alloy plate is at first to being adjusted to the liquation processing that the molten aluminium alloy of forming shown in the table 1 comprises the degassing and filters, to adopt the DC casting to be cast into the ingot casting of thick 500mm.With ingot casting surface plane cutting 10mm, heat this ingot casting then, without equal heat treatment, carry out the hot rolling processing by the condition shown in the table 2 and reach 4mm until thickness of slab.Heating-up temperature is divided into 300 ℃ and 400 ℃ of two levels.
[table 1]
| Composition | Si | Fe | Cu | Mn | Mg | Zn | Ti |
| Content | 0.08 | 0.30 | 0.017 | 0.005 | 0.005 | 0.003 | 0.03 |
(unit: weight %) [table 2]
| Creating conditions of aluminium alloy plate | Monomer Si measures (ppm) | Cross cruel ink pollution | ||||
| Have or not acid treatment | ||||||
| Heating-up temperature (℃) | Hot rolling finishing temperature (℃) | After the hot rolling at the time below 150 ℃ (Hr) | After cold rolling | Have | Do not have | |
| Embodiment 1 | 400 | 220 | 0.5 | 65 | 9 | 8 |
| Embodiment 2 | 400 | 300 | 1 | 50 | 9 | 9 |
| Embodiment 3 | 400 | 350 | 2 | 40 | 9 | 9 |
| Embodiment 4 | 400 | 350 | 4 | 70 | 9 | 7 |
| Comparative example 1 | 400 | 350 | 6 | 100 | 4 | 1 |
| Comparative example 2 | 400 | 350 | 7 | 110 | 4 | 1 |
| Comparative example 3 | 300 | 150 | 0.1 | 130 | 3 | 1 |
Carry out cold-rolling treatment then, finish rolling is to thickness of slab 0.24mm, corrects flatness, makes the raw material aluminium alloy plate of support body for lithographic plate printing plate shown in the table 2, embodiment 1-4 and comparative example 1-3.
In addition, get the aluminium alloy plate of 20g, they are dissolved respectively with excessive hydrochloric acid from each aluminium alloy plate, molecular filter with 0.2 μ m mesh filters then, dry resulting residue is measured weight separately, and measures the monomer Si amount that exists on each aluminium alloy plate surface.The results are shown in the table 2.
For each aluminium alloy plate of making, handle by the following described surface coarsening that carries out.
At first, adopt to use the brush grain (No. 8 brush * 3) of float stone suspension, the aluminium alloy plate of embodiment 1-4 and comparative example 1-3 is carried out surface coarsening handle (mechanical surface roughening treatment operation).After the washing, 75 ℃ down with 25% NaOH solution caustic corrosion to 8g/m
2(caustic corrosion treatment process).Washing is removed dirt with the nitric acid of 9g/l down at 40 ℃ then and is handled, and carries out electrolytic surface roughening treatment (electrolytic surface roughening treatment operation) subsequently.The electrolytic surface roughening treatment is that nitric acid with 9g/l is as electrolyte, at 50 ℃ and 180C/dm
2Carry out under the condition of electric weight.
After the washing, handle, adopt spray process, use the NaOH solution of 25% (weight) to carry out alkali treatment (alkali treatment operation) as removing dirt.Employed NaOH solution is pH13, and the liquid temperature is 70 ℃.In addition, the alkali treatment time is 4 seconds, and etching extent (aluminium meltage) is 1g/m
2Wash after the alkali treatment, adopt spray process, carry out acid treatment (acid treatment operation) with the sulfuric acid of 80 ℃ of liquid temperature, acid concentration 500g/l.More than be to remove the dirt treatment process.The acid-treated time is 4 seconds, and acid treatment equipment uses the equipment of putting down in writing among the special 2000-123805 of hope.
After removing dirt and handling, dc electrolysis in acid concentration 170g/l, 30 ℃ sulfuric acid solution, (average current density is 15A/dm to carry out anodized
2, the amount of formed anode oxide film is 2.4g/m
2), make support body for lithographic plate printing plate after the washing.
In addition,, remove the acid treatment of dirt in handling and have or not influence, also make the support body for lithographic plate printing plate that omits the acid treatment operation simultaneously in order to investigate for the raw material aluminium alloy plate of the support body for lithographic plate printing plate of embodiment 1-4 and comparative example 1-3.
Coating has the sensitization liquid of following composition, and making dried coating weight is 2.5g/m
2, on the support body for lithographic plate printing plate surface of making, photosensitive layer is set, make the photosensitive lithographic plate master.
Sensitization liquid is formed:
Naphthoquinones-1, the ester compounds of 2-diazido-5-sulfonic acid chloride and Pyrogallol, acetone resin (compound of record among the specification embodiment 1 of US3635709) ... 0.75g
The cresols novolac resin ... 2.00g
Oil blue-#603 (Orion Dehua length of schooling is made) ... 0.04g
Ethylene dichloride ... 16g
2-methoxy ethyl acetic acid esters ... 12g
The photosensitive lithographic plate master of making is like this put into vacuum printer, carry out exposure in 50 seconds from the distance of 1m is last by transparent positive, use SiO then with the metal halide mercury vapor lamp of 3kW
2With Na
2Mol ratio (the SiO of O
2/ Na
2O) be 5.26% (weight) aqueous solution (pH=12.7) video picture of 1.74 sodium metasilicate, make lithographic plate, use these lithographic plates to print test.
Printing machine uses stony desert (Ha マ ダ) 900CDX.In fountain solution, add 1% chlorion, under the condition that was easy to generate cruel ink pollution, print.At first print 1000, then the space of a whole page is placed on and makes it dry on the printing machine, print once more and places drying, repeat this operation, forcibly be formed on the situation that is easy to generate pollution on non-image, a situation arises to estimate the pollution (cross cruel ink pollution) of non-image portion.In addition, also simultaneously the acid-treated influence of using sulfuric acid is estimated.Evaluation is to carry out for nine grades by visual branch, and 9 are divided into the best (crossing cruel ink pollution state seldom), and 5 are divided into the lower limit of permission.Evaluation result is shown in Table 2.
The aluminium alloy plate of embodiment 1-4, all below 70ppm, the cruel ink pollution of anti-mistake is good for the monomer Si amount after the cold-rolling treatment.In addition, owing to carried out acid treatment, the monomer Si amount and the α-AlFeSi on top layer measure minimizing, and the level of the cruel ink pollution of anti-mistake improves.For the monomer Si amount of investigating the top layer and the minimizing that α-AlFeSi measures, use electron probe microanalyser (EPMA, NEC system JXA-8800M), 5 positions (5 visuals field) carried out surface analysis with the area of 180 μ m * 180 μ m, relatively their monomer Si's exists rate.
The aluminium alloy plate of comparative example 1,2, because the temperature after the hot rolling end is longer in the time more than 150 ℃, monomer Si separates out more, the cruel ink pollution of anti-mistake is bad.By carrying out acid treatment, the cruel ink pollution of anti-mistake slightly improves, but does not reach the level of permission yet.
The aluminium alloy plate of comparative example 3, heating-up temperature is lower, and the result makes hot rolling finishing temperature reduce.Though the temperature after hot rolling finishes is very short in the time more than 150 ℃, monomer Si amount is more, the non-constant of the cruel ink pollution of anti-mistake.Even carry out acid treatment, effect is not fairly obvious yet.It is believed that this is because the temperature in the course of hot rolling is lower, due to monomer Si separates out in the course of hot rolling.
In sum, adopt the manufacture method of support body for lithographic plate printing plate of the present invention, can omit equal heat treatment and annealing, suppress monomer Si amount simultaneously, cold-rolling treatment finishes monomer Si amount contained in the aluminium alloy plate of back and can reach below the 70ppm, suppressed the generation of cruel ink pollution, in addition, acid solution with 60-90 ℃ before anodized carries out acid treatment to the aluminium alloy plate surface, can remove a part and the α-AlFeSi of the monomer Si on surface, further improve the cruel ink pollution of anti-mistake.
Claims (19)
1. the manufacture method of support body for lithographic plate printing plate, this method is made up of following operation at least: (1) is cast as the casting process of ingot casting by molten aluminium alloy, (2) this ingot casting is carried out flush cut processing, heat treated, hot rolling processing and cold-rolling treatment successively, make the rolling process of the aluminium alloy plate of thick 0.1-0.5mm, (3) this aluminium alloy plate is carried out the flatness correction process of flatness correction process, (4) after the flatness correction process above-mentioned aluminium alloy plate carried out that surface coarsening is handled and the surface treatment procedure of anodized, it is characterized in that:
(a) the heat treated temperature in the rolling operation is more than 350 ℃,
(b) temperature after above-mentioned hot rolling is handled is 200-350 ℃,
(c) to handle back 5 hours be below 150 ℃ with interior temperature in above-mentioned hot rolling.
2. the manufacture method of the described support body for lithographic plate printing plate of claim 1 is characterized in that, the monomer Si amount that is contained in the aluminium alloy plate after the cold-rolling treatment in the described rolling process is below 70ppm.
3. the manufacture method of the described support body for lithographic plate printing plate of claim 2, it is characterized in that, surface coarsening in the described surface treatment procedure is handled and is comprised by caustic corrosion treatment process, electrolytic surface roughening treatment operation at least and remove the chemical surface roughening treatment that the dirt treatment process is formed, and described removal dirt treatment process comprises at least utilizes aqueous slkali that aluminium alloy plate is carried out the alkali treatment operation of alkali treatment and with 60-90 ℃ acid solution aluminium alloy plate carried out acid-treated acid treatment operation.
4. the manufacture method of the described support body for lithographic plate printing plate of claim 3 is characterized in that, the surface coarsening pack processing in the described surface treatment procedure is contained in the mechanical surface roughening treatment of carrying out before the described chemical surface roughening treatment.
5. the manufacture method of the described support body for lithographic plate printing plate of claim 4 is characterized in that, described electrolytic surface roughening treatment operation is to carry out after described mechanical surface roughening treatment.
6. the manufacture method of the described support body for lithographic plate printing plate of claim 3 is characterized in that, described alkali treatment operation of carrying out alkali treatment with aqueous slkali comprise with more than the pH10, the aqueous slkali of temperature 25-80 ℃ handles the step of aluminium alloy plate.
7. the manufacture method of the described support body for lithographic plate printing plate of claim 3 is characterized in that, described acid solution with 60-90 ℃ carries out acid-treated acid treatment operation and comprises the step that the sulfuric acid solution that rises with acid concentration 250-800g/ is handled aluminium alloy plate.
8. the manufacture method of support body for lithographic plate printing plate is characterized in that, this method comprises following operation:
(a) be cast as the casting process of ingot casting by molten aluminium alloy,
(b) this ingot casting is carried out flush cut processing, heat treated, hot rolling processing and cold-rolling treatment successively, makes the rolling process of the aluminium alloy plate of thick 0.1-0.5mm,
(c) this aluminium alloy plate is carried out the flatness correction process of flatness correction process,
(d) after the flatness correction process above-mentioned aluminium alloy plate is carried out the operation that surface coarsening is handled,
(e) aluminium alloy plate that the process surface coarsening is handled carries out the operation of anodized;
Above-mentionedly aluminium alloy plate is carried out operation (d) that surface coarsening handles comprise (f) at least by caustic corrosion treatment process, electrolytic surface roughening treatment operation with remove the chemical surface roughening treatment step that the dirt treatment process constitutes;
Described removal dirt treatment process comprises at least with aqueous slkali carries out the alkali treatment operation of alkali treatment and with 60-90 ℃ acid solution aluminium alloy plate is carried out acid-treated acid treatment operation aluminium alloy plate.
9. the manufacture method of the described support body for lithographic plate printing plate of claim 8 is characterized in that, described rolling process comprises following measures:
(g) the heat treated temperature in the described rolling process is more than 350 ℃,
(h) temperature after described hot rolling is handled is 200-350 ℃,
(i) described hot rolling handle back 5 hours with interior temperature below 150 ℃.
10. the manufacture method of the described support body for lithographic plate printing plate of claim 9 is characterized in that, Si amount contained in the aluminium alloy plate after the cold-rolling treatment in the described rolling process is for below the 70ppm.
11. the manufacture method of the described support body for lithographic plate printing plate of claim 8 is characterized in that, describedly aluminium alloy plate is carried out the operation (d) that surface coarsening handles also includes the step of aluminium alloy plate being carried out the mechanical surface roughening treatment.
12. the manufacture method of the described support body for lithographic plate printing plate of claim 11, it is characterized in that described electrolytic surface roughening treatment operation is to carry out afterwards in each processing that described mechanical surface roughening treatment, caustic corrosion are handled and removed in the dirt processing.
13. the manufacture method of the described support body for lithographic plate printing plate of claim 8 is characterized in that, described alkali treatment operation of carrying out alkali treatment with aqueous slkali comprise with more than the pH10, the aqueous slkali of temperature 25-80 ℃ handles the operation of aluminium alloy plate.
14. the manufacture method of the described support body for lithographic plate printing plate of claim 8 is characterized in that, described acid solution with 60-90 ℃ carries out acid-treated acid treatment operation and comprises the operation that the sulfuric acid solution that rises with acid concentration 250-800g/ is handled aluminium alloy plate.
15. the manufacture method of support body for lithographic plate printing plate, this method is made up of following operation at least: (1) is cast as the casting process of ingot casting by molten aluminium alloy, (2) this ingot casting is carried out flush cut processing, heat treated, hot rolling processing and cold-rolling treatment successively, make the rolling process of the aluminium alloy plate of thick 0.1-0.5mm, (3) this aluminium alloy plate is carried out the flatness correction process of flatness correction process, (4) after the flatness correction process above-mentioned aluminium alloy plate carried out that surface coarsening is handled and the surface treatment procedure of anodized, it is characterized in that:
(a) the heat treated temperature in the rolling operation is more than 350 ℃,
(b) temperature after above-mentioned hot rolling is handled is 200-350 ℃,
(c) to handle back 5 hours be below 150 ℃ with interior temperature in above-mentioned hot rolling,
(d) in handling, the surface coarsening of aluminium alloy plate comprises the chemical surface roughening treatment of forming by caustic corrosion treatment process, electrolytic surface roughening treatment operation and removal dirt treatment process at least.
16. the manufacture method of the described support body for lithographic plate printing plate of claim 15, it is characterized in that described removal dirt treatment process comprises at least with aqueous slkali carries out the alkali treatment operation of alkali treatment and with 60-90 ℃ acid solution aluminium alloy plate is carried out acid-treated acid treatment operation aluminium alloy plate.
17. the manufacture method of the described support body for lithographic plate printing plate of claim 15 is characterized in that, the Si amount that is contained in the aluminium alloy plate after the cold-rolling treatment in the described rolling process is for below the 70ppm.
18. the manufacture method of the described support body for lithographic plate printing plate of claim 16 is characterized in that, described alkali treatment operation of carrying out alkali treatment with aqueous slkali comprise with more than the pH10, the aqueous slkali of temperature 25-80 ℃ handles the operation of aluminium alloy plate.
19. the manufacture method of the described support body for lithographic plate printing plate of claim 16 is characterized in that, described acid solution with 60-90 ℃ carries out acid-treated acid treatment operation and comprises the operation of handling aluminium alloy plate with the sulfuric acid solution of acid concentration 250-800g/l.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2000279765 | 2000-09-14 | ||
| JP2000279765A JP2002086942A (en) | 2000-09-14 | 2000-09-14 | Method of manufacturing substrate for lithographic plate |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1343568A true CN1343568A (en) | 2002-04-10 |
| CN1248868C CN1248868C (en) | 2006-04-05 |
Family
ID=18764722
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 01131242 Expired - Fee Related CN1248868C (en) | 2000-09-14 | 2001-09-04 | Method for mfg. support body for lithographic plate printing plate |
Country Status (2)
| Country | Link |
|---|---|
| JP (1) | JP2002086942A (en) |
| CN (1) | CN1248868C (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101661230B (en) * | 2009-09-24 | 2011-09-14 | 杭州科雷机电工业有限公司 | Grinding technique for aluminum alloy drum of external-drum type plate-making machine |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4593593B2 (en) * | 2007-05-28 | 2010-12-08 | 三菱アルミニウム株式会社 | Aluminum alloy plate for printing plate and method for producing the same |
| JP5886619B2 (en) * | 2011-12-19 | 2016-03-16 | 三菱アルミニウム株式会社 | Method for producing aluminum alloy plate for lithographic printing plate |
-
2000
- 2000-09-14 JP JP2000279765A patent/JP2002086942A/en active Pending
-
2001
- 2001-09-04 CN CN 01131242 patent/CN1248868C/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101661230B (en) * | 2009-09-24 | 2011-09-14 | 杭州科雷机电工业有限公司 | Grinding technique for aluminum alloy drum of external-drum type plate-making machine |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2002086942A (en) | 2002-03-26 |
| CN1248868C (en) | 2006-04-05 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| EP0211574B1 (en) | Aluminium alloy support for lithographic printing plates | |
| US7442491B2 (en) | Aluminum alloy blank for lithographic printing plate and support for lithographic printing plate | |
| JP2008111142A (en) | Aluminum alloy sheet for planographic printing plate and support for planographic printing plate | |
| EP1046514B1 (en) | Method for producing aluminium support for lithographic printing plate | |
| JP2005254638A (en) | Method of manufacturing support for lithographic printing plate | |
| JPH1161364A (en) | Manufacture of aluminum alloy support for lithographic printing plate and aluminum alloy support for lithographic printing plate | |
| JP5266175B2 (en) | Planographic printing plate precursor | |
| JPH0346316B2 (en) | ||
| JPH0135910B2 (en) | ||
| CN1248868C (en) | Method for mfg. support body for lithographic plate printing plate | |
| JP5266176B2 (en) | Planographic printing plate precursor | |
| JPS6112796B2 (en) | ||
| EP1516744B1 (en) | Aluminium alloy blank for lithographic printing plate and support for lithographic printing plate | |
| JPH11151870A (en) | Aluminum alloy sheet for lithographic printing block | |
| JPH0517876B2 (en) | ||
| JPH08943B2 (en) | Aluminum alloy for printing plate | |
| US7037635B2 (en) | Presensitized plate | |
| JP5480565B2 (en) | Aluminum alloy plate for lithographic printing plate and support for lithographic printing plate | |
| JP4016310B2 (en) | Aluminum alloy support for lithographic printing plate and method for producing base plate for support | |
| JP2002160466A (en) | Support for lithographic printing plate | |
| JP4714576B2 (en) | Aluminum alloy plate for lithographic printing plate and method for producing the same | |
| JP2008201038A (en) | Method for roughening support for lithographic printing plate and method for manufacturing support for lithographic printing plate | |
| JP2006076104A (en) | Method for manufacturing support for lithographic printing plate | |
| JP4098462B2 (en) | Method for producing support for lithographic printing plate | |
| JP3522881B2 (en) | Method for producing aluminum support for lithographic printing plate |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| ASS | Succession or assignment of patent right |
Owner name: FUJI PHOTO FILM CO., LTD. Free format text: FORMER OWNER: FUJIFILM HOLDINGS CORP. Effective date: 20070706 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| C56 | Change in the name or address of the patentee |
Owner name: FUJIFILM HOLDINGS CORP. Free format text: FORMER NAME OR ADDRESS: FUJI PHOTO FILM CO., LTD. |
|
| CP01 | Change in the name or title of a patent holder |
Address after: Kanagawa Patentee after: Fuji Photo Film Co., Ltd. Address before: Kanagawa Patentee before: Fuji Film Corp. |
|
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20060405 Termination date: 20200904 |