Abstract: A wafer surface observing apparatus for inspecting a peripheral portion of an object has (A) a lens system and a CCD camera for taking images of the peripheral portion of the object, (B) storage for storing image data about the taken images, and (C) display for displaying the image data stored in the storage device. In particular, the present apparatus can have functions of rotating the object placed on a prealignment portion, recording images of one full outer periphery of an end portion of the object by the lens system and CCD camera into the location where the orientation flat portions or notched portions of the object are placed in position, accepting the images into the storage device, and displaying the images on a CRT.

Abstract: A wafer surface observing apparatus for inspecting a peripheral portion of an object has (A) a lens system and a CCD camera for taking images of the peripheral portion of the object, (B) storage for storing image data about the taken images, and (C) display for displaying the image data stored in the storage device. In particular, the present apparatus can have functions of rotating the object placed on a prealignment portion, recording images of one full outer periphery of an end portion of the object by the lens system and CCD camera into the location where the orientation flat portions or notched portions of the object are placed in position, accepting the images into the storage device, and displaying the images on a CRT.

Abstract: An information recording-displaying card, includes: a core sheet; and an over sheet bonded to the core sheet, including: a support including an amorphous polyester resin, and a reversible thermosensitive recording layer disposed on the support, including: an electron-donating coloring compound, and an electron-accepting compound. The reversible thermosensitive recording layer is capable of relatively forming a coloring state and a decolorizing state, with a difference in at least one of heating temperature, and cooling rate after heating. The over sheet is embossable in an upper portion thereof, functions as an image displaying section, and meets the following condition (A) and condition (B): (A) (the over sheet's upper limit temperature for erasing ?30° C.)?(temperature of a storage elasticity E? (1.0 E+08) Pa)?200° C., and (B) 1.0 E+04 Pa?(the storage elasticity E? of the over sheet at 180° C.)?5.0 E+07 Pa.

Abstract: An information recording-displaying card, includes: core sheet; and over sheet bonded to core sheet, including: a support including an amorphous polyester resin, and a reversible thermosensitive recording layer on the support, including: an electron-donating coloring compound, and an electron-accepting compound. The reversible thermosensitive recording layer is capable of forming coloring state and decolorizing state, with difference in at least one of the following: heating temperature, and cooling rate after heating. The over sheet is embossable in upper portion thereof, functions as image displaying section, and meets the following conditions (A), (B) and (C): (A) (over sheet's upper limit temperature for erasing?30° C.)>(over sheet's temperature of storage elasticity E? (1.0 E+08) Pa), (B) 10 ?m or less of surface waviness WCM, and (C) 1.0 E+02 Pa?(storage elasticity E? of reversible thermosensitive over sheet at 180° C.)?5.0 E+07 Pa.

Abstract: An information recording-displaying card, includes: core sheet; and over sheet bonded to core sheet, including: a support including an amorphous polyester resin, and a reversible thermosensitive recording layer on the support, including: an electron-donating coloring compound, and an electron-accepting compound. The reversible thermosensitive recording layer is capable of forming coloring state and decolorizing state, with difference in at least one of the following: heating temperature, and cooling rate after heating. The over sheet is embossable in upper portion thereof, functions as image displaying section, and meets the following conditions (A), (B) and (C): (A) (over sheet's upper limit temperature for erasing?30° C.)>(over sheet's temperature of storage elasticity E? (1.0 E+08) Pa), (B) 10 ?m or less of surface waviness WCM, and (C) 1.0 E+02 Pa?(storage elasticity E? of reversible thermosensitive over sheet at 180° C.)?5.0 E+07 Pa.

Abstract: An information recording-displaying card, includes: a core sheet; and an over sheet bonded to the core sheet, including: a support including an amorphous polyester resin, and a reversible thermosensitive recording layer disposed on the support, including: an electron-donating coloring compound, and an electron-accepting compound. The reversible thermosensitive recording layer is capable of relatively forming a coloring state and a decolorizing state, with a difference in at least one of: heating temperature, and cooling rate after heating. The over sheet is embossable in an upper portion thereof, functions as an image displaying section, and meets the following condition (A) and condition (B): (A) (the over sheet's upper limit temperature for erasing ?30° C.)?(temperature of a storage elasticity E? (1.0 E+08)Pa)?200° C., and (B) 1.0 E+04 Pa?(the storage elasticity E? of the over sheet at 180° C.)?5.0 E+07 Pa.

Abstract: A reversible heat-sensitive recording material comprising a polymer resin matrix material and organic low molecular weight compounds dispersed in the matrix material, wherein as the low molecular weight compounds, (A) at least one of higher ketones having at least 15 carbon atoms and (B) at least one of aliphatic saturated dicarboxylic acids having at least 12 carbon atoms, are used in combination at a weight ratio of (A) to (B) within a range of from 98:2 to 30:70.

Abstract: A polycarbonate polyol having a main chain of the formula: ##STR1## wherein R is an aliphatic or alicyclic hydrocarbon group having 4 to 10 carbon atoms, and n is a number of 2.00 to 20.

Abstract: A polycarbonate polyol having a main chain of the formula: ##STR1## wherein R is an aliphatic or alicyclic hydrcarbon group having 4 to 10 carbon atoms, and n is a number of 2.00 to 20.