摘要:
An activated carbon producing system includes a carbonizer for carbonizing cellulose triacetate as cellulose acylate to create carbonized material. A pulverizer pulverizes the carbonized material to obtain granules. An activation device activates the granules to create activated carbon. The activated carbon producing system includes a dispenser for supplying the cellulose triacetate at a plural number of times. A heating furnace is operated at each time after the dispenser operates, for thermally decomposing the cellulose triacetate from the dispenser, to obtain the carbonized material by carbonization. The pulverizer pulverizes the carbonized material in a size equal to or more than 2 mm and equal to or less than 20 mm. Temperature of the heating furnace is equal to or higher than 300 deg. C. and equal to or lower than 600 deg. C.
摘要:
A sheet film pack has a pack housing containing a plurality of sheet film units in a stack therein, a lid slidable relative to the pack housing to open or close an open top of the pack housing, and a plate spring mounted on an inner bottom surface of the pack housing to urge the stack of sheet film units toward the open top. Each sheet film unit consists of a sheet of photographic film and a plastic film sheath backing and fringing the sheet film. The plate spring has a pair of arched arms which extend parallel to each other along side zones of a bottom one of the sheet film units, such that peak areas of the arms contact the bottom sheet film unit at positions within 15 mm from side edges of the sheet film unit.
摘要:
A sheet film package contains a sheet film unit in a light-shielding envelope with an open end through which the sheet film unit is movable into and out of the light-shielding envelope. The light-shielding envelope is formed by folding a sheet of light-tight material in half to provide a folded side, and securely sealing joints of the folded sheet along a side opposite side to the folded side as well as an end opposite to the open end, wherein a middle portion of the folded side has a larger folding angle compared with end portions thereof.
摘要:
A pressure sensitive adhesive film having a film and a pressure sensitive adhesive composition of a polymer prepared by polymerization of acrylic or methacrylic monomer in the presence of a polymerization initiator having no cyano group and/or a polymer prepared by graft polymerization of acrylic or methacrylic monomer with an elastomer in the presence of a polymerization initiator having no cyano group is favorably employable for packaging photographic materials.
摘要:
A magnetic recording medium comprising a magnetic layer, a backing layer, and a support sandwiched between the magnetic layer and the backing layer. The backing layer is made form a coating composition comprising a filler, binder, and a silicone compound represented by the following formula (I): ##STR1## wherein groups A, B, and D each independently represent --CH.sub.3 or a group -X-Y-Z, in which X represents a C1-C11 alkylene or --(CH.sub.2).sub.3 NHCO--, Y represents a specific aliphatic group, alicyclic group, or an aromatic group, and Z represents --OH, m is an integer from 4 to about 150, and n is an integer from 1 to 6,the compound of formula (I) containing at least one -X-Y-Z group, with the ratio of the number of groups -X-Y-Z to m being from 1:3 to 1:about 30.
摘要:
A film sheath, holding a sheet film to constitute a sheet film unit, is formed from a plastic resin, and is provided with at least a tapered portion in an end fringe which is directed toward a leading end of a sliding lid when the sliding lid is moved back to a closed position in a sheet film pack containing a stack of such sheet film units, so as to provide a sufficiently large gap between two of the stacked sheet film units, for smooth thrusting of the sliding lid into between the two sheet film units. The film sheath also has a protuberance in a corner of an open end, as a stop member for stopping the sheet film from slipping out of the film sheath.
摘要:
A novel black coloring material is obtained by treating a chitosan with a dyestuff of the lithospermum root. If a water-insoluble chitosan is used as the chitosan, a finely divided black coloring material is obtained, and if a gelatinous chitosan salt is used as the chitosan, a gelatinous black coloring material is obtained. If a water-soluble chitosan, chitosan oligosaccharide or D-glucosamine, or a salt thereof is used as the chitosan, a liquid black coloring material is obtained. If a powdery polymeric substance is treated with such a black coloring material, a polymer-based black coloring material is obtained, and if a fiber is dyed with such a black coloring material, the fiber is dyed to a black color having a low lightness.
摘要:
A light-tight cassette for a roll of light-sensitive photographic material, which may be readily assembled, and is constituted by a tubular body portion and molded end caps. The end caps have uniformly spaced outer and interior flanges forming a channel engaging the end margins of said body portion, said outer flange having along its corner portions extensions which have an axial dimension exceeding the axial dimension of the interior flange. The interfitting relationships between ensure maximum effectiveness in protecting light tightness.
摘要:
An instant film pack for containing therein a stack of integral type instant film units is provided with an exposure frame defined by an opening formed in a top wall of the film pack. A film unit exit slot is formed in a front wall of the film pack through which exposed instant film units are ejected one by one. A protective cover sheet having a rearwardly and outwardly inclined and tapered leading edge which is removably disposed in the film pack for protecting the foremost film unit from being exposed to light, and a light blocking member covering the film unit exit slot to block light entering inside the film pack therethrough which is split by the inclined and tapered leading edge of the protective cover sheet.
摘要:
A protective sheet used for packaging photosensitive sheets which comprises a back panel, an upper panel connected with the upper side edge of the back panel and a bottom panel connected with the lower side edge of the back panel, and at least said upper panel or said bottom panel is provided with side flaps joined therebetween to prevent the photosensitive sheets from slipping out.