Abstract: An alkaline battery separator comprising a nonwoven fabric containing one or more mixture layers of entangled short fibers and entangled long fibers, wherein a fiber length of the short fibers is from 1 mm to less than 25 mm, a fiber length of the long fibers is 25 mm or more, and a total thickness of all of the mixture layers accounts for not less than one-third of a whole thickness of the nonwoven fabric is disclosed. The alkaline battery separator according to the present invention exhibits an excellent electrolyte-holding capacity, tensile strength, tear strength and bending resistance, and can be used to stably prepare a battery. Electrode flash rarely penetrate the separator, to thereby cause a short circuit between electrodes.

Abstract: An alkaline battery separator comprising a fiber sheet containing, on outer surfaces of fibers forming a surface of the fiber sheet, a substance having a peak of a bond energy at 530.5 to 531.5 eV which is measured by an X-ray photoelectron spectrometer at a photoelectron-taking-off angle of about 30°; a fiber sheet containing a larger amount of carboxyl groups bonded to surfaces of fibers forming an inside of the fiber sheet than an amount of carboxyl groups bonded to outer surfaces of fibers forming a surface of the fiber sheet; or a fiber sheet capable of entrapping ammonia in an amount of 0.4 mmol/g or more in average is disclosed.

Abstract: An alkaline battery separator comprising a nonwoven fabric containing one or more mixture layers of entangled short fibers and entangled long fibers, wherein a fiber length of the short fibers is from 1 mm to less than 25 mm, a fiber length of the long fibers is 25 mm or more, and a total thickness of all of the mixture layers accounts for not less than one-third of a whole thickness of the nonwoven fabric is disclosed. The alkaline battery separator according to the present invention exhibits an excellent electrolyte-holding capacity, tensile strength, tear strength and bending resistance, and can be used to stably prepare a battery. Electrode flash rarely penetrate the separator, to thereby cause a short circuit between electrodes.

Abstract: An alkaline battery separator comprising a hydrophilic nonwoven fabric obtainable by heat-fusing and hydro-entangling (1) polyolefin dividable composite fibers having an average fiber length of 20 to 60 mm, (2) high-strength fibers having an average fiber length of 30 to 60 mm and a fiber strength of 5 g/denier or more, and (3) polyolefin heat-sensitive-adhesive fibers having an average fiber length of 30 to 60 mm, to obtain a heat-fused and hydro-entangled nonwoven fabric by a dry-laid method, and imparting a hydrophilic property to the resulting heat-fused and hydro-entangled nonwoven fabric; these high-strength fibers accounting for 20 to 45 mass % with respect to a total mass of the polyolefin dividable composite fibers, the high-strength fibers and the polyolefin heat-sensitive-adhesive fibers. The alkaline battery separator exhibits an excellent breaking strength, and has practical and sufficient tensile strength and electrolyte-holding capacity properties.

Abstract: An alkaline battery separator comprising a nonwoven fabric containing one or more mixture layers of entangled short fibers and entangled long fibers, wherein a fiber length of the short fibers is from 1 mm to less than 25 mm, a fiber length of the long fibers is 25 mm or more, and a total thickness of all of the mixture layers accounts for not less than one-third of a whole thickness of the nonwoven fabric is disclosed. The alkaline battery separator according to the present invention exhibits an excellent electrolyte-holding capacity, tensile strength, tear strength and bending resistance, and can be used to stably prepare a battery. Electrode flash rarely penetrate the separator, to thereby cause a short circuit between electrodes.

Abstract: An alkaline battery separator comprising a hydrophilic nonwoven fabric obtainable from a fiber web prepared by a wet-laid method from (1) dividable composite fibers capable of producing polyolefin fine fibers, (2) high-strength fibers having a single-fiber strength of 5 g/denier or more, and (3) fusible fibers containing at least on a surface thereof a resin component having a melting point lower than a melting point of the dividable composite fibers and lower than a melting point of the high-strength fibers: by dividing the dividable composite fibers, entangling the fibers, and fusing the fusible fibers, to obtain a heat-fused and entangled nonwoven fabric, and imparting a hydrophilic property to the resulting heat-fused and entangled nonwoven fabric; wherein an average fiber length of the constituent fibers of the hydrophilic nonwoven fabric is 10 mm or more, is disclosed.

Abstract: A battery separator comprising a sheet material containing a polyvinyl alcohol cross-linked by a cross-linking group of the general formula (I): ##STR1## wherein A represents a group of --CH.dbd.CH--R.sub.1 or ##STR2## R.sub.1 represents an optionally substituted quaternary nitrogen-containing aromatic heterocyclic group, R.sub.2 and R.sub.3 independently represent a hydrogen atom or alkoxy group having 1 to 4 carbon atoms, m is o or 1, and n is an integer of 1 to 6, is disclosed.The separator exhibits a good resistance to electrolyte, electrolyte holding rate, and resistant to short-circuits.

Abstract: Disclosed is a color image forming system comprising an optical scanning exposure apparatus by which scanning is made on a light-sensitive silver halide color photographic material, wherein a He-Cd gas laser is used as a blue light source and a He-Ne gas laser is used as a green light source, respectively; or wherein a He-Ne gas laser is used as a green light source and at least one layer of the light-sensitive silver halide color photographic material contains silver chloride in an amount of 90 to 100 mole %.The color image forming system of this invention has a scanning exposure apparatus using inexpensive, stable, compact and long-life light sources and can obtain a color image of high image quality with good color reproducibility. Also, the system can be made inexpensive and compact as a whole.

Abstract: A camera equipped with a television set wherein a display screen of the television set is utilized to display a camera image to be photographed. A camera equipped with a television set which is described above, wherein the display screen is of a liquid crystal color display type. The camera equipped with a television set which is described above, wherein an image to be photographed, as well as photographing data are displayed on the display screen. The camera equipped with a television set as described above, wherein the display screen is capable of displaying an image to be photographed for a prescribed period of time.