Abstract: Provided is a method of performing pre-paint treatment of an automobile body including a high-tensile steel sheet, in which desirable corrosion resistance can be obtained after painting. A method of performing pre-paint treatment of an automobile body, the method including performing an alkaline degreasing step, a first water-washing step, a chemical conversion treatment step, a second water-washing step, and a cationic electrodeposition painting step, in this order, wherein the chemical conversion treatment step is performed using an chemical conversion treatment agent including zirconium (A), free fluorine ions (B), an allylamine-diallylamine copolymer (C), aluminum ions (D), nitrate ions (E) each at a predetermined concentration; the allylamine-diallylamine copolymer (C) forms an acid addition salt having an anionic counter ion, and the pKa of an acid thereof falls within the range of ?3.7 to 4.8; and the content percentage of diallylamine is 80 mol % or more and 98 mol % or less.

Abstract: Provided is a method of performing pre-paint treatment of an automobile body including a high-tensile steel sheet, in which desirable corrosion resistance can be obtained after painting. A method of performing pre-paint treatment of an automobile body, the method including performing an alkaline degreasing step, a first water-washing step, a chemical conversion treatment step, a second water-washing step, and a cationic electrodeposition painting step, in this order, wherein the chemical conversion treatment step is performed using an chemical conversion treatment agent including zirconium (A), free fluorine ions (B), an allylamine-diallylamine copolymer (C), aluminum ions (D), nitrate ions (E) each at a predetermined concentration; the allylamine-diallylamine copolymer (C) forms an acid addition salt having an anionic counter ion, and the pKa of an acid thereof falls within the range of ?3.7 to 4.8; and the content percentage of diallylamine is 80 mol % or more and 98 mol % or less.

Abstract: Disclosed is a method for the formation of multi-layer paint films with the omission of a mid-coat paint coating process. The method comprises the use of a particular aqueous colored paint (A) comprising a prescribed amount of specified titanium oxide that has been compounded, The resulting multi-layer paint films have a very bright paint color, and especially a white or light-colored color, and have excellent concealing properties. The aqueous colored paint (A) is characterized by containing from 50 to 60 mass % with respect to the whole paint solid fraction of titanium oxide of specific surface area not more than 13 m2/g.

Abstract: Disclosed is a method for the formation of multi-layer paint films with the omission of a mid-coat paint coating process. The method comprises the use of a particular aqueous colored paint (A) comprising a prescribed amount of specified titanium oxide that has been compounded, The resulting multi-layer paint films have a very bright paint color, and especially a white or light-colored color, and have excellent concealing properties. The aqueous colored paint (A) is characterized by containing from 50 to 60 mass % with respect to the whole paint solid fraction of titanium oxide of specific surface area not more than 13 m2/g.

Abstract: The present invention: provides a good-workability and high-strength cold-rolled steel sheet excellent in post-painting corrosion resistance to the extent of securing excellent resistance to salt warm water immersion which is a good-workability and high-strength cold-rolled steel sheet excellent in post-painting corrosion resistance characterized in that: said steel sheet contains, in mass, 0.16 to 0.19% C, 1.10 to 1.30% Si, 1.50 to 1.60% Mn, not more than 0.1% P and 0.015 to 0.050% Al, with the balance consisting of Fe and unavoidable impurities; the average of the amount of Si incrassating on the surface of said steel sheet is not more than 20 times the Si concentration in said steel sheet; and the area percentage of the portions where the ratio of the Si concentration on the surface of said steel sheet to the Si concentration in said steel sheet is not less than 10 is not more than 95%.

Abstract: The present invention relates to a cationic electrodeposition coating composition substantially free of lead compounds, which is excellent in curability and can be finish-coated with a splendid appearance, and an article coated with the composition. The invention provides a lead-free electrodeposition coating composition excellent in curability and a coated article, the composition being capable of forming a coating film, which emits less tin compounds to have no influence on appearance of a finish coating film and film performances.

Abstract: The present invention relates to a cationic electrodeposition coating composition substantially free of lead compounds, and more specifically to a method of coating an alloyed hot-dip galvanized steel plate with the composition and a coated article obtained by the method having edge portions and general surfaces excellent in corrosion resistance. The invention provides a method of coating an alloyed hotdip galvanized steel plate with a lead-free cationic electrodeposition coating composition containing a rust preventive pigment to form an electrodeposition coating film excellent in corrosion resistance, and a coated article obtained by the electrodeposition.

Abstract: The present invention relates to a cationic electrodeposition coating composition substantially free of lead compounds, which is excellent in curability and can be finish-coated with a splendid appearance, and an article coated with the composition. The invention provides a lead-free electrodeposition coating composition excellent in curability and a coated article, the composition being capable of forming a coating film, which emits less tin compounds to have no influence on appearance of a finish coating film and film performances.

Abstract: The present invention relates to a cationic electrodeposition coating composition substantially free of lead compounds, and more specifically to a method of coating an alloyed hot-dip galvanized steel plate with the composition and a coated article obtained by the method having edge portions and general surfaces excellent in corrosion resistance. The invention provides a method of coating an alloyed hotdip galvanized steel plate with a lead-free cationic electrodeposition coating composition containing a rust preventive pigment to form an electrodeposition coating film excellent in corrosion resistance, and a coated article obtained by the electrodeposition.

Abstract: The present invention: provides a good-workability and high-strength cold-rolled steel sheet excellent in post-painting corrosion resistance to the extent of securing excellent resistance to salt warm water immersion which is a good-workability and high-strength cold-rolled steel sheet excellent in post-painting corrosion resistance characterized in that: said steel sheet contains, in mass, 0.16 to 0.19% C, 1.10 to 1.30% Si, 1.50 to 1.60% Mn, not more than 0.1% P and 0.015 to 0.050% Al, with the balance consisting of Fe and unavoidable impurities; the average of the amount of Si incrassating on the surface of said steel sheet is not more than 20 times the Si concentration in said steel sheet; and the area percentage of the portions where the ratio of the Si concentration on the surface of said steel sheet to the Si concentration in said steel sheet is not less than 10 is not more than 95%.

Abstract: When data is keyed in by operating a keyboard K displayed in a touch panel input area 14a, its character code is stored in a real data memory 46b of a RAM 23 and data on its attribute, pointer and data length is stored as management data. When handwritten data is input by manipulating a handwriting board P displayed in the input area 14a, coordinate data corresponding to the locus of the input handwritten data is stored in the real data memory, and data on its attribute, pointer and data length is stored as management data. The keyed-in data including the character code and the handwritten data including image data are both displayed in an output area 14b on the basis of the real data and its management data. Data edition including data erasure can be dealt with in a unified manner.

Abstract: A process for promoting corrosion of a test material, is provided including the steps of immersing, in an electrolytic liquid, a test material which is comprised of a metal blank and a coating film formed on the metal blank, and allowing a DC current to flow between the metal blank and an electrode in the electrolytic liquid while reversing the polarity of the metal blank alternately from positive to negative and vice versa, thereby causing the coating film to be at least partly peeled off the metal blank in one state of polarity and promoting corrosion of the metal blank in the reversed state of polarity. The process may also be conducted with a metal blank having a damaged portion of the coating film which exposes a portion of the surface of the metal blank underlying the coating film.

Abstract: An electronic device maintains data utilizing a ferroelectric memory, not requiring a backup power source voltage. Data such as schedule data and telephone number data is stored in a ferroelectric RAM which switches between a dynamic mode and a nonvolatile mode. When a clock mode is designated by a "CLK" key, a memory control circuit causes the ferroelectric RAM to be switched to the nonvolatile mode to maintain the data stored therein. When a schedule mode or a telephone mode is designated by means of a "Sch" key or a "Tel" key, the ferroelectric RAM is switched to the nonvolatile mode to write/read data therein/therefrom. When it is detected that a battery voltage is lowered or the battery is removed from the electronic device, the ferroelectric RAM is switched to the nonvolatile mode to protect the stored data.

Abstract: When data is keyed in by operating a keyboard K displayed in a touch panel input area 14a, its character code is stored in a real data memory 46b of a RAM 23 and data on its attribute, pointer and data length is stored as management data. When handwritten data is input by manipulating a handwriting board P displayed in the input area 14a, coordinate data corresponding to the locus of the input handwritten data is stored in the real data memory, and data on its attribute, pointer and data length is stored as management data. The keyed-in data including the character code and the handwritten data including image data are both displayed in an output area 14b on the basis of the real data and its management data. Data edition including data erasure can be dealt with in a unified manner.

Abstract: A processor outputs a state signal representing the process state toga reset circuit. Upon reception of a reset signal from an external reset switch, the reset circuit outputs the reset signal to the reset terminal of the processor under the condition that the state signal allows a reset operation. The reset circuit also has a counter for starting a count operation upon reception of an externally input reset signal. Even when the processor is in a runaway state and cannot output the state signal for allowing the reset operation, a forced reset signal is supplied to the processor after a predetermined time is counted by the counter.

Abstract: The present invention relates to luggage which includes a ceiling board having a handle, a bottom board, front and rear faces and both side walls which are composed of freely foldable sheets. The bag portions are formed in the inner lower parts of both side walls at both right and left sides, and fastening tools are attached to both corners of the ceiling part respectively, and further hard side reinforced inserts having core materials inside are composed to be attached to the pockets and the fastener tools attachably or freely removably.

Abstract: A detachable luggage caster roller for suitcases, luggage and the like is comprised of a roller support bracket formed of synthetic resin and including a cylindrical male member and a base plate adapted to be secured directly or indirectly through a seat member to the luggage and formed of synthetic resin, said base plate including a cylindrical female member adapted to be slidably engaged, directly or indirectly with said cylindrical male member of said roller support bracket through point and line contact. The roller is formed of different kinds of synthetic resin and comprised of a tread reinforced by a bridge-shaped rib embedded therein and a sleeve bearing formed of synthetic resin impregnated with lubricating oil.

Abstract: A detachable luggage caster roller unit comprising a caster roller which is swivelly supported by a base plate and a separate seat adapted to be secured to a bottom or lateral end of the luggage to receive and anchor the base plate of the caster roller. The seat for anchoring the caster roller comprises a substantially rectangular plate of a predetermined thickness having a cavity with two symmetrical grooves adapted to embrace the opposite sides of the base plate. The cavity at its bottom is provided with two symmetrical slits to form a resilient tongue with a weir positioned in an outer end thereof and adapted to prevent the base plate of the caster roller unit from slipping out the seat.