Abstract: An endless print belt for rotary stamp in which a plurality of print sections are disposed and spaced-out between each other on a surface of a print belt main body, with at least the print surface of the print section being formed of porous material, wherein a groove in the width direction is formed at an intermediate position of each spaced-out part. Preferably, the spaced-out part is formed such that the surface thereof is in a non-porous state and both ends of the groove are formed into a bund part, for preventing ink from running out.

Abstract: In a rotary stamp with master stamp incorporating a master stamp having an oblong hole from which a desired print section of a rotary stamp is exposed in the bottom part of a grip case containing the rotary stamp, a thin melt-processed laminated belt produced by treating the superficial layer of a laminated belt foundation composed of porous thermoplastic resin belt base and an ink circulation reinforced rear fabric such that only a print section is left in a porous state while the other part of the belt is melt processed into anon-porous state that is used as an endless print belt, with the oblong hole in the master stamp formed in a size which allows the belt to pass along a bridge part without the surfaces making contact therewith.

Abstract: In a rotary stamp with master stamp incorporating a master stamp 3 having a window hole 30 from which a desired print section of a rotary stamp 2 is exposed in the bottom part of a grip case 4 containing a rotary stamp 2, a thin melt-processed laminated belt produced by treating the superficial layer of a laminated belt foundation composed of porous thermoplastic resin belt base 24a and an ink circulation reinforced rear fabric 24b such that only a print section is left in porous state while the other part is met-processed into non-porous face is used as an endless print belt 24 and the window hole 30 in the master stamp 3 is formed in a size which allows the belt to pass through along a bridge part 23 without its surface's making contact therewith.

Abstract: An endless print belt for rotary stamp in which a plurality of print sections 5 are disposed with spaced-out parts 51 between each other on the surface of a print belt main body 24 at least the surface of which is formed of porous material, wherein a groove 25 in the width direction is formed at an intermediate position of each spaced-out part 51. Preferably, the spaced-out part 51 is formed such that the surface thereof is in non-porous state or both ends of the groove 25 are formed into a band part 53 for preventing ink from running out.

Abstract: A processable sheet which is inexpensive and has exellent rigidity can be manufactured easily and safely without a need of any special apparatus. The sheet comprises a fibrous layer and a multi-layer film on one surface or both surfaces of the fibrous layer. The fibrous layer comprises highly entangled conjugate fibers each of which has a structure of a core and a sheath. The core is made of a high melting point-thermoplastic resin (B) and the sheath is made of a low melting point-thermoplastic resin (A). The multi-layer film comprises an outer thermoplastic resin (C) which is highly compatible with the low melting point-thermoplastic resin (A). Tho fibrous layer and the multi-layer film, as well as the contact points of the conjugate fibers, are melt-bonded to each other by a thermal treatment.

Abstract: A stretchable nonwoven fabric is provided, in which a uniform web comprising 70 to 100% by weight of polypropylene base heat-bondable composite fibers and 0 to 30% by weight of other organic fibers and having a web heat shrinking percentage "A" of 50% or lower at 100.degree. C. and a web heat shrinking percentage "B" of 50% or higher at 120.degree. C. provided that a difference "B"-"A" between the latter and the former is 20% or higher, the fibers being uniformly entangled together, has been shrinked as a result of sufficient crimping and more increased entanglement of the above composite fibers imparted through further heat-treatment, and which has an elastic recovery-at-30%-elongation of 80% or higher in both the warp and weft directions. This nonwoven fabric has no density variation, no crease, and excellent stretchability.

Abstract: A microwave moisture sensor comprising a first transmission and reception system comprising first transmission and reception horn antennas disposed in confronting relation with respect to each other and with a movable sheet like measurand disposed therebetween; and a second transmission and reception system comprising a second transmission horn antenna for re-emitting a microwave, as received by the first reception horn antenna against the measurand, and a second reception horn antenna for receiving the microwave emitted by the second transmission horn antenna and having passed through the measurand. The antennas disposed on one side of the measurand are spaced from each other by a distance of n.lambda..+-..lambda./4, wherein n is an integer and .lambda. is the wavelength of the microwave, in a direction substantially perpendicular to the plane of the measurand.

Abstract: Method and apparatus for generating signals corresponding to the moisture content of paper by irradiating a sheet of paper with a near infrared ray, by detecting a beam having a coaction with the paper and by accomplishing the desired arithmetic operations with the use of the detected signals. According to the method and apparatus, at least two optical systems having different degrees of coactions with the paper are provided to respectively detect photometric optical signals and reference optical signals so that the signals corresponding to the moisture content may be generated with the use of the photometric and reference optical signals.

Abstract: A metallic block has a conical measuring-light inlet port and a conical reference-light inlet port formed therein. The ports intersect at a light sensor. The inlet ports are closed by respective multilayer interference filters. Temperature control means, which may be responsive to the light sensor output, maintains the metallic block, and thus the filters and sensor, at a fixed temperature.