Abstract: There is provided a pellicle in which the agglutinant, that is, the mask-bonding adhesive, is designed to have a light transmission of no greater than 70 percents; preferably the agglutinant is black in color.

Abstract: There is provided a pellicle in which the adhesive layer for attaching the pellicle onto a photo mask is made from a room temperature curable two-part adhesive mask so that the formation of the adhesive layer is carried out without heating. The room temperature curable two-part adhesive dispensed on the pellicle frame is not heated for curing.

Abstract: A reflecting screen 10 comprises a base portion 11, light transmitting portions 12 provided on the base portion 11, and light absorbing portions 14. Each of the light transmitting portions 12 comprises a unit prism shape 12 which has a generally wedge-like shape with a larger width on the image source side than its width on the rear face side and is arranged along a screen face 10a. A reflecting layer 13 adapted to reflect the image light, which has been transmitted through the unit prism shapes 12, is provided on the rear face side of each unit prism shape 12. Each unit prism shape 12 extends linearly, and each light absorbing portion 14 is arranged between each adjacent pair of the unit prism shapes 12.

Abstract: A reflecting screen 10 comprises a base portion 11, light transmitting portions 12 provided on the base portion 11, and light absorbing portions 14. Each of the light transmitting portions 12 comprises a unit prism shape 12 which has a generally wedge-like shape with a larger width on the image source side than its width on the rear face side and is arranged along a screen face 10a. A reflecting layer 13 adapted to reflect the image light, which has been transmitted through the unit prism shapes 12, is provided on the rear face side of each unit prism shape 12. Each unit prism shape 2 extends linearly, and each light absorbing portion 14 is arranged between each adjacent pair of the unit prism shapes 12.

Abstract: Provided is a room temperature-curable, heat-conductive silicone rubber composition, including: (A) a diorganopolysiloxane with both molecular chain terminals blocked with hydroxyl groups and/or organooxy groups, (B) a heat-conductive filler other than a palladium powder, (C) an organosilane containing two or more hydrolyzable groups, and/or a partial hydrolysis-condensation product thereof, and (D) a palladium powder. The composition improves on the drawbacks of the conventional technology, is able to suppress the quantity of hydrogen gas produced from the heat-conductive filler, exhibits superior storage properties, and yields a low-hardness cured product upon curing. The cured product is useful as a heat-conductive material for a heat-generating electronic component.

Abstract: RTV silicone rubber compositions are provided comprising (A) an organopolysiloxane, (B) an organosilicon compound or partial hydrolytic condensate thereof, and (C) a non-aromatic amino-bearing compound. The compositions, when electric and electronic parts having a copper, silver or other metal portion on their surface are encapsulated or sealed therewith, can prevent or retard the parts from corrosion with sulfur-containing gas.

Abstract: Provided is a room temperature-curable, heat-conductive silicone rubber composition, including: (A) a diorganopolysiloxane with both molecular chain terminals blocked with hydroxyl groups and/or organooxy groups, (B) a heat-conductive filler other than a palladium powder, (C) an organosilane containing two or more hydrolyzable groups, and/or a partial hydrolysis-condensation product thereof, and (D) a palladium powder. The composition improves on the drawbacks of the conventional technology, is able to suppress the quantity of hydrogen gas produced from the heat-conductive filler, exhibits superior storage properties, and yields a low-hardness cured product upon curing. The cured product is useful as a heat-conductive material for a heat-generating electronic component.

Abstract: A reflecting screen 10 comprises a base portion 11, light transmitting portions 12 provided on the base portion 11, and light absorbing portions 14. Each of the light transmitting portions 12 comprises a unit prism shape 12 which has a generally wedge-like shape with a larger width on the image source side than its width on the rear face side and is arranged along a screen face 10a. A reflecting layer 13 adapted to reflect the image light, which has been transmitted through the unit prism shapes 12, is provided on the rear face side of each unit prism shape 12. Each unit prism shape 2 extends linearly, and each light absorbing portion 14 is arranged between each adjacent pair of the unit prism shapes 12.

Abstract: An organopolysiloxane composition which contains from 0.01% to less than 0.5% by weight of a sulfidable metal powder is provided. When a silver-containing precision electronic part is encapsulated or sealed with the cured composition, the metal powder in the cured composition is sulfided with sulfur-containing gas, thereby preventing or retarding the corrosion of the encapsulated or sealed electronic part with the sulfur-containing gas.

Abstract: RTV silicone rubber compositions are provided comprising (A) an organopolysiloxane, (B) an organosilicon compound or partial hydrolytic condensate thereof, and (C) a non-aromatic amino-bearing compound. The compositions, when electric and electronic parts having a copper, silver or other metal portion on their surface are encapsulated or sealed therewith, can prevent or retard the parts from corrosion with sulfur-containing gas.

Abstract: By a conventional mechanism for detecting a position of a knob of a toner bottle, the detection of the presence or absence of the toner bottle could not be effected. So, by providing an optical sensor on the inner surface of an interchange door opposed to the knob of the toner bottle, it is possible to effect the detection of the presence or absence of the toner bottle, and the detection of the position of the knob, i.e., the opening and closing of a shutter of the toner bottle.

Abstract: A RTV heat conductive silicone rubber composition comprising (A) an organopolysiloxane having hydrolyzable groups at both ends, (B) an organopolysiloxane having at least one hydrolyzable group at one end, (C) a heat conductive filler, and (D) an organosilicon compound having a hydrolyzable group or a partial hydrolytic condensate thereof experiences a minimized viscosity increase even when loaded with a large amount of heat conductive filler (C), has good potting, coating and sealing properties, and is suited for use in one package form.

Abstract: An organopolysiloxane composition comprising 0.01% to less than 0.5% by weight of a sulfidable metal powder is provided. When a silver-containing precision electronic part is encapsulated or sealed with the cured composition, the metal powder in the cured composition is sulfided with sulfur-containing gas for thereby preventing or retarding the corrosion of the electronic part with the sulfur-containing gas.

Abstract: A RTV heat conductive silicone rubber composition comprising (A) an organopolysiloxane having hydrolyzable groups at both ends, (B) an organopolysiloxane having at least one hydrolyzable group at one end, (C) a heat conductive filler, and (D) an organosilicon compound having a hydrolyzable group or a partial hydrolytic condensate thereof experiences a minimized viscosity increase even when loaded with a large amount of heat conductive filler (C), has good potting, coating and sealing properties, and is suited for use in one package form.

Abstract: An inorganic filler which has been surface coated with an addition cure silicone composition in the cured state is included in an organopolysiloxane composition, which becomes effective for preventing the filler from settling down even during long-term shelf storage.

Abstract: By the conventional mechanism for detecting the position of the knob of a toner bottle, the detection of the presence or absence of the toner bottle could not be effected. So, by providing an optical sensor on the inner surface of an interchange door opposed to the knob of the toner bottle, it is possible to effect the detection of the presence or absence of the toner bottle, and the detection of the position of the knob, i.e., the opening and closing of the shutter of the toner bottle.

Abstract: A room temperature curable organopolysiloxane composition comprising (a) an organopolysiloxane having a specific structure, (b) a alkenoxysilane or substituted alkenoxysilane or a partial hydrolyzate thereof, and (c) a siloxane or a partial hydrolyzate thereof cures into a product which experiences no decline of insulation resistance upon application of voltage in a hot humid environment and is resistant to electrolytic corrosion.

Abstract: An inorganic filler which has been surface coated with an addition cure silicone composition in the cured state is included in an organopolysiloxane composition, which becomes effective for preventing the filler from settling down even during long-term shelf storage.

Abstract: A sheet conveying device includes an endless belt for conveying a sheet, at least two stretching shafts arranged to revolvably stretch the endless belt, a rotatable pressing roller arranged to push the stretched endless belt from outside, the sheet being arranged to be conveyed in a state of being pinched between the endless belt and the pressing roller, and springs for pressing the pressing roller so as to make the pressing roller movable in a direction of being pushed to the endless belt and in a direction of being released from being pushed to the endless belt.

Abstract: A room temperature curable organopolysiloxane composition comprising (a) an organopolysiloxane having a specific structure, (b) a alkenoxysilane or substituted alkenoxysilane or a partial hydrolyzate thereof, and (c) a siloxane or a partial hydrolyzate thereof cures into a product which experiences no decline of insulation resistance upon application of voltage in a hot humid environment and is resistant to electrolytic corrosion.