Abstract: A slitter apparatus has a rotary shaft provided with one or more upper blades, and a rotary shaft provided with one or more lower blades, the rotary shafts being arranged in parallel with each other and at such a spacing as to achieve a predetermined engagement depth with contact between side face of peripheral part of upper blades and side face of peripheral part of lower blades, wherein a thickness of upper blades is not less than 1 mm, an included angle of upper blades is in a range of 75 to 88°, hardnesses of upper blades and lower blades are in a range of 6.9×103 to 8.8×103 N/mm2, a difference between the hardness of upper blades and the hardness of lower blades is not more than 4.9×102 N/mm2, surface roughnesses of upper blades and lower blades are not more than 4 ?m, and a difference between the surface roughness of upper blades and the surface roughness of lower blades is not more than 2 ?m.

Abstract: A nonvolatile semiconductor memory device includes: a semiconductor substrate having a main surface; a pair of p-type impurity diffused regions, formed at the main surface of the semiconductor substrate to serve as source/drain; a floating gate formed on a region of the semiconductor substrate lying between the paired p-type impurity diffused regions, with a tunnel insulating layer interposed between the floating gate and the region of the semiconductor substrate; and an impurity diffused control region formed at the main surface of the semiconductor substrate to control a potential of the floating gate. Accordingly, a nonvolatile semiconductor device can be obtained in which data can be electrically erased and written at a low voltage.

Abstract: The method is related to intermittent coating capable of distinctly defining a boundary between a coated region and an uncoated region on a web, to thereby intermittently form a coated film on the web with increased accuracy and efficiency. A coating liquid feed pump is arranged so as to alternately communicate with a circulation line and a pocket of an extrusion type coater through a directional control valve, resulting in coating liquid being intermittently fed to the pocket and then forced out of a slit, so that coated regions and uncoated regions may be alternately formed on a conductive sheet material. During interruption of communication between the pocket and the feed pump, the pocket is permitted to communicate via a discharge pipe and a shut-off valve with a sub-tank to reduce a pressure of coating liquid in the pocket, to thereby prevent undesired feeding of coating liquid to the uncoated region beyond an end position of the coated region.