Abstract: An aluminum alloy sheet for a lithographic printing plate which has excellent ink stain resistance, with a local defect in a photosensitive layer after long-term storage being hard to occur, and excellent the pit uniformity after a roughening and a manufacturing method thereof are provided. An aluminum alloy sheet for a lithographic printing plate containing a predetermined content of Fe, Si, Cu and Ti as well as one type or more selected from B and C, and composed of remaining Al and inevitable impurities, in which a concentration of an aluminum carbide present in the aluminum alloy sheet is not more than 8 ppm, an area occupancy of aggregation substances present on the aluminum alloy sheet surface after the roughening treatment with respect to an arbitrary circle with a radius 5 ?m in the aluminum alloy sheet surface is less than 10%. In a case where the area occupancy is not less than 10%, the aggregation substances are present at a rate of 1 to 2 pieces/50 cm2.

Abstract: Provided is a filled fluororesin sheet excellent in stress relaxation properties, in particular stress relaxation properties at a high temperature. The filled fluororesin sheet includes a fluororesin and an inorganic filler having a revised Mohs hardness of not less than 8, in a fluororesin:inorganic filler volume ratio of 30-55:70-45 (wherein the total of the two is 100).

Abstract: A presensitized plate bringing about the lithographic printing plate which exhibits a high resistance to scumming and in which formation of bulges causing image dropouts is suppressed is provided with the lithographic printing plate support which includes an aluminum plate and an anodized film of aluminum provided on the aluminum plate, and has a micropore extending in the anodized film in the direction of depth from a film surface opposite with a film surface facing the aluminum plate. The micropore is sealed at least partially on its inside with protrusions made of boehmite, and the protrusions made of boehmite which are located on the anodized film have a mean height of less than 15 nm.

Abstract: The lithographic printing plate support includes an aluminum plate and an anodized film formed on the aluminum plate and micropores extend in the anodized film in a depth direction from its surface opposite from the aluminum plate. Each of the micropores includes a large-diameter portion having a predetermined shape and a small-diameter portion having a predetermined shape. The lithographic printing plate support 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 in continued printing and after suspended printing.

Abstract: An aluminum sheet material for lithographic printing plates wherein the number of aluminum carbide particles having a circle equivalent diameter measured by the PoDFA method of 3 ?m or more is four or less, the number of aluminum carbide particles having a circle equivalent diameter measured by the PoDFA method of 3 ?m or more being measured by melting 3000 g of the aluminum sheet material in a crucible disposed in an electric furnace, filtering 2000 g of the molten metal through a dedicated filter, allowing 1000 g of the molten metal remaining on the filter to solidify, and measuring the number of aluminum carbide particles contained in inclusions in the molten metal deposited on the upper surface of the filter by observing a vertical section (14 mm×10 mm) of the solidified metal including the diameter (14 mm) of the filter in the center area of the filter up to a height of 10 mm above the filter using a microscope.

Abstract: An aluminum alloy plate for a lithographic printing plate capable of obtaining a lithographic printing plate having an excellent resistance to spotting, a method of manufacturing such aluminum alloy plate, a lithographic printing plate support obtained by using such aluminum alloy plate, and a presensitized plate and in particular an on-machine developable presensitized plate are provided. The aluminum alloy plate contains 0.08 to 0.45 wt % of iron and to 0.20 wt % of silicon, with the balance being inadvertent impurities and aluminum, and the content of aluminum-iron intermetallic compounds is not more than 0.05 wt %.

Abstract: A lithographic printing plate precursor includes an image recording layer and a support obtained by subjecting an aluminum plate having an iron content of 0.28 mass % or less to a surface roughening treatment and to an anodization treatment.

Abstract: A process for producing a fluororesin sheet containing a filler includes a step of rolling a sheet-forming resin composition including a fluororesin, a filler and a processing aid at a roll temperature of from 40 to 80° C. The processing aid includes at least 30% by mass of a petroleum hydrocarbon solvent having a fractionating temperature of not higher than 120° C. based on 100% by mass of the amount of the processing aid. The fluororesin sheet so produced provides high stress relaxation properties along with high hermetic sealing properties even when the content of the fluororesin is low and the content of the filler is high.

Abstract: An ultrasonic probe that can be efficiently charged in a short time, a charger and an ultrasonic diagnostic apparatus, as well as an ultrasonic diagnostic system that uses them are provided by the present invention, which comprises a detector for detecting whether or not an ultrasonic probe having a rechargeable battery or the charger for charging this is in charging state; and a controller for stopping transmitting and receiving operations of ultrasonic waves. The ultrasonic diagnostic apparatus comprises a transmitting and receiving circuit for executing the generation of a signal related to the transmission of the ultrasonic waves and the generation of the diagnostic information based on the signal related to the reception of the ultrasonic waves; a probe switching circuit for selecting one of a plurality of ultrasonic probes; and a controller for controlling the probe switching circuit in accordance with a detection signal from the detector.