摘要:
A method and apparatus for treating a surface of an aluminum substrate for a printing plate includes treating the substrate surface with a treatment liquid being circulated, separating and discharging aluminum ions from a portion of the treatment liquid, recovering a sodium hydroxide solution from the treatment liquid, mixing the recovered sodium hydroxide solution with the treatment liquid being circulated, and maintaining a predetermined concentration of aluminum ions in the treatment liquid to be used. A portion of the treatment liquid containing sodium aluminate solution is mixed with aluminum slag containing an amorphous aluminum hydroxide produced at the time of neutralization of a waste acid and a waste alkali produced during surface treatment to thereby supersaturate the sodium aluminate solution, crystallize the aluminum hydroxide, and recover the sodium hydroxide solution to be returned to a liquid control tank to maintain a predetermined concentration of aluminum ions in the treatment liquid. Further, the characteristics of the aluminum slag are changed to be usable as an industrially available aluminum hydroxide. Still further, a hydrolytic reaction is caused in a separated part of the treatment liquid. Preferably, the supersaturated aluminate solution is passed through a filter, so that aluminum hydroxide is crystallized from the sodium aluminate solution, and the sodium hydroxide solution is recovered.
摘要:
Provided is a lithographic printing plate support that has excellent scratch resistance and is capable of obtaining a presensitized plate which exhibits excellent on-press developability and enables a lithographic printing plate formed therefrom to have a long press life and excellent deinking ability after suspended printing. The lithographic printing plate support includes an aluminum plate, and an aluminum anodized film formed thereon and having micropores which extend in a depth direction of the anodized film from a surface of the anodized film opposite from the aluminum plate. Each micropore has a large-diameter portion which extends to a depth of 5 to 60 nm (depth A) from the anodized film surface, and a small-diameter portion which communicates with the bottom of the large-diameter portion, further extends to a depth of 900 to 2,000 nm from the communication position and has a predetermined average diameter.
摘要:
A light reflecting substrate comprises at least: an insulating layer and a metal layer disposed in contact with the insulating layer. The total reflectivity of light in the wavelength range of more than 320 nm and not more than 700 nm is not less than 50% and the total reflectivity of light in the wavelength range of 300 nm to 320 nm is not less than 60%. The light reflecting substrate further improves the emission power of the light-emitting device when used as the substrate therefor.
摘要:
An object of the present invention is to provide a probe card which has good stability of the connection between testing electrodes and test electrodes even after exposure to high temperatures in the burn-in test, and is less susceptible to displacements in the positions of contact between the testing electrodes and conductive portions or between the conductive portions and probe needles or the test electrodes even after repeated use of the probe card. The probe card of the present invention is a probe card which includes a testing circuit board having the testing electrodes formed so as to correspond to the test electrodes and an anisotropic conductive member electrically connecting the test electrodes with the testing electrodes. The testing electrodes are formed so that at least ends of the testing electrodes protrude from a surface of the testing circuit board, and the anisotropic conductive member is a member which has an insulating base made of an anodized aluminum film having micropores therein and a plurality of conductive paths made of a conductive material, insulated from one another, and extending through the insulating base in a thickness direction of the insulating base.
摘要:
Disclosed is a microfine structure which can be used as an anisotropic conductive member. Also disclosed is a method for producing such a microfine structure. Specifically disclosed is a microfine structure which is composed of a base having penetrating micropores at a density of not less than 10,000,000 micropores/mm2. In this microfine structure, some penetrating micropores are filled with a substance other than the material of the base.
摘要翻译:公开了可用作各向异性导电构件的微细结构。 还公开了这种微细结构的制造方法。 具体公开了一种微细结构,其由具有不小于10,000,000微孔/ mm 2的密度的穿透微孔的基底组成。 在这种微细结构中,一些穿透微孔填充有除基底材料之外的物质。
摘要:
A method of producing an aluminum alloy sheet for a lithographic printing plate includes homogenizing an ingot of an aluminum alloy at 500 to 610° C. for one hour or more, the aluminum alloy containing 0.05 to 1.5% of Mg, 0.1 to 0.7% of Fe, 0.03 to 0.15% of Si, 0.0001 to 0.10% of Cu, and 0.0001 to 0.1% of Ti, with the balance being aluminum and unavoidable impurities, subjecting the homogenized product to rough hot rolling, a start temperature of the rough hot rolling being 430 to 500° C. and a finish temperature of the rough hot rolling being 400° C. or more, holding the product subjected to the rough hot rolling for 60 to 300 seconds after completion of the rough hot rolling to recrystallize the surface of the product, subjecting the resulting product to finish hot rolling that is finished at 320 to 370° C., and winding up the resulting product in the shape of a coil to obtain a hot-rolled product having a surface with an average recrystallized grain size in a direction perpendicular to a rolling direction of 50 μm or less. The aluminum alloy may contain 2 to 30 ppm of Pb.
摘要:
According to the present invention, since the concavo-convex pattern of the embossing form is formed by electrical discharge machining, the peaks on the surface of the resultant embossing form are all of the same level or height, which enables the enhancement of the service life of the embossing form. Further, since the concavo-convex pattern of the embossing form is formed by electrical discharge machining, even a complicated and minute concavo-convex pattern can be formed. Accordingly, when applying the method of the present invention to, for example, the production of a substrate for a lithographic plate, an aluminum substrate for a lithographic plate which excels in plate wear, sensitivity and resistance to stains can be produced. And when applying the same to the production of an aluminum decorative laminate, an aluminum decorative laminate which excel in glossiness and paint adhesion can be produced.
摘要:
A lithographic printing plate support capable of obtaining a presensitized plate which is excellent in scumming resistance and scratch resistance and achieves a good balance between sensitivity and press life, and a method of manufacturing the support are provided. The support includes a surface which has an arithmetic mean roughness Ra of 0.36 to 0.50 μm; not more than 3.0 recesses with a depth of at least 4 μm per 400 μm square region; and a surface area ratio ΔS5(0.02-0.2) determined from Sx5(0.02-0.2) denoting the actual surface area of a 5 μm square surface region as determined by three-point approximation based on data obtained by extracting 0.02 to 0.2 μm wavelength components from three-dimensional data on the surface region measured with an atomic force microscope at 512×512 points and S0 denoting the geometrically measured surface area of the surface region, of 50 to 90%.
摘要:
The present invention provides a method for preparing an aluminum support for lithographic printing plate, the aluminum support for a lithographic printing plate obtained by the method and a presensitized plate using the same, characterized in that anodizing treatment is performed on an aluminum plate after hydrochloric acid electrolytic graining treatment if necessary, nitric acid electrolytic graining treatment are performed on the aluminum plate at a specified ratio of quantities of electricity, and with this method, a lower-purity aluminum plate could be used and a obtained support for a lithographic printing plate is excellent in press life and scum resistance when a lithographic printing plate is prepared.
摘要:
Disclosed is a support for a lithographic printing plate obtained by subjecting an aluminum plate to a graining treatment and an anodizing treatment, the support comprising at least any one of Mn in a range from 0.1 to 1.5 wt % and Mg in a range from 0.1 to 1.5 wt %; Fe of 0 to 1 wt %; Si of 0 to 0.5 wt %; Cu of 0 to 0.2 wt %; at least one kind of element out of the elements listed in items (a) to (d) below in a range of content affixed thereto, (a) 1 to 100 ppm each of one or more kinds of elements selected from a group consisting of Li, Be, Sc, Mo, Ag, Ge, Ce, Nd, Dy and Au, (b) 0.1 to 10 ppm each of one or more kinds of elements selected from a group consisting of K, Rb, Cs, Sr, Y, Hf, W, Nb, Ta, Tc, Re, Ru, Os, Rh, Ir, Pd, Pt, In, Tl, As, Se, Te, Po, Pr, Sm and Tb, (c) 10 to 500 ppm each of one or more kinds of elements selected from a group consisting of Ba, Co, Cd, Bi and La, and (d) 50 to 1000 ppm each of one or more kinds of elements selected from a group consisting of Na, Ca, Zr, Cr, V, P and S; and Al and incidental impurities as a remaining portion. When the presensitized plate is prepared from this support, a plate has an excellent resistance to aggressive ink staining against a wider range of image recording layers and plate developers corresponding thereto.