Abstract: Disclosed herein is a recording medium comprising an alumina hydrate having an average pore radius of 20 to 200 .ANG. and a half breadth of pore radius distribution of 20 to 150 .ANG..

Abstract: Disclosed herein is a recording medium comprising an alumina hydrate having an average pore radius of 20 to 200 .ANG. and a half breadth of pore radius distribution of 20 to 150 .ANG..

Abstract: Disclosed herein is a recording medium comprising an alumina hydrate having an average pore radius of 20 to 200 .ANG. and a half breadth of pore radius distribution of 20 to 150 .ANG..

Abstract: A recording medium comprises an ink-receiving layer comprising a pigment and an alkali-process gelatin, wherein the alkali-process gelatin has no sol-gel reversibility in an environment of room temperature and has a weight average molecular weight within the range of from 50,000 to 150,000. A coating aqueous dispersion comprises water and has dispersed therein a pigment and the alkali-process gelatin. A process for producing a recording medium comprises the steps of coating on a support at room temperature the coating aqueous dispersion and drying the resulting coating at a high temperature of 80.degree. C. or above. An image forming method comprises ejecting minute droplets of an ink from fine orifices to apply the ink droplets to the recording medium to make a print. A printed material comprises the recording medium.

Abstract: Disclosed herein is a recording medium comprising an alumina hydrate having an average pore radius of 20 to 200 .ANG. and a half breadth of pore radius distribution of 20 to 150 .ANG..

Abstract: Disclosed herein is a recording medium having an ink-receiving layer which comprises an alumina hydrate and acid-processed or alkali-processed gelatin.

Abstract: A baseband signal, obtained by quasi-coherent detecting a received signal, is sampled and written as a sequence of baseband signal samples into a buffer memory. For each baseband signal sample read out from the buffer memory, a maximum likelihood sequence estimation part generates a desired symbol sequence and feeds it to a transversal filter having a characteristic based on an estimated impulse response of the transmission path in correspondence with the timing of the baseband signal sample. A phase error between an estimated received signal from the transversal filter and the corresponding baseband signal sample is sequentially detected by a phase error detecting part. The phase error thus obtained is fed to an offset correcting signal generating part, which calculates an estimated offset angular frequency .DELTA..omega..sub.

Abstract: A recording medium is provided which is constituted of a base material and an ink-receiving layer formed on the base material and containing alumina hydrate of a boehmite structure, or is constituted of a fibrous material and alumina hydrate of a boehmite structure incorporated therein. The alumina hydrate in the ink-receiving layer or the fibrous material has an interplanar spacing of (020) plane of exceeding 0.617 nm but not more than 0.620 nm, and crystallite size in a direction perpendicular to (010) plane ranging from 6.0 to 10.0 nm.

Abstract: Provided is a recording medium comprising a base material, and an ink-receiving layer thereon containing a pigment having an aggregated-particle diameter of from 0.5 to 50 .mu.m and a binder, wherein said ink-receiving layer has a value of BET specific surface area/pore volume within the range of from 50 to 500 m.sup.2 /ml.

Abstract: Disclosed herein is a recording medium comprising an alumina hydrate having an average pore radius of 20 to 200 .ANG. and a half breadth of pore radius distribution of 20 to 150 .ANG..

Abstract: When presentation is made while displaying presentation information on both of audience-site and presenter-site screens, presenter-site additional information for supporting the progress of presentation is not displayed on the audience-site screen but displayed on the presenter-site screen. When drawing information displayed on the audience-site screen is to be displayed also on the presenter-site screen, the drawing information is displayed after abridged. When presentation is made by using a plurality of screens and when presentation information is to be displayed on any one of the screens, the presentation information is automatically assigned to any one of the screens by assignment deciding functions. As a result, the progress of presentation by the presenter can be smoothened.

Abstract: A gradient magnetic field generation apparatus for generating a gradient magnetic field in a space in which an inspection object is placed includes at least one gradient magnetic field coil and a retaining member of the coil which undergoes deformation vibration by an electromagnetic force generated when a current is caused to flow through the coil. This apparatus generates noise and vibration whenever a pulse current is applied to the coil, because an electromagnetic force develops in the coil due to the pulse current and the coil as well as the retaining member of the coil undergo deformation and vibration. Therefore, a force which inhibits this deformation and vibration is applied to the retaining member so as to prevent deformation and vibration of the coil and the retaining member and to keep their shapes constant.

Abstract: Conflicting requests for cursor control of displaying are resolved by priority. The cursors can reflect attributes of their control or those of their control units, with visual attributes being color, shape or the like. Priority may be established between each cursor and a range of areas acceptable for cursor movement subdivided from the screen, or according to a priority of allowable functions, or according to a priority of conflicting operating times, or a combination of the same. Simultaneous control of a plurality of cursors can be permitted when there is no conflict.

Abstract: Pluralities of estimated desired and interference signal sequence candidates corresponding to the states of transition of desired and interference signals estimated to receive are sequentially generated in a state estimation part 40, from which they are provided to a desired signal estimation part 10 and an interference signal estimation part 20. These estimation parts 10 and 20 generate estimated desired and interference signals from the sequence candidates in accordance with conversion parameters from a channel parameter estimation part 50. A signal of their sum is subtracted in an error estimation part 30 from a received signal to yield an estimation error signal .epsilon.. The state estimation part 40 estimates estimated desired and interference signal sequences for the generated sequence candidates.

Abstract: Optical recording mediums are prepared by extrusion molding. In the extrusion molding, a thermoplastic resin heated to a given temperature is pressed between a roll stamper and a roll opposite thereto. A gap between the roll stamper and the roll is precisely defined by belt members fixed on each side of the roll where the roll does not come into touch with the thermoplastic resin. The joints of the respective belt members are formed at positions different from each other on the periphery of the roll. Alternatively the gap may be defined by cutting the roll substrate at a part on which the stamper member is fixed, or by interposing endless belts with a given thickness between the roll stamper and the roll. The stamper member provided on the roll stamper is reduced in stress, and has a surface precision of 10 .mu.m or less.

Abstract: The present invention provides a process using a roll stamper which molds a substrate sheet for information recording mediums by continuously transferring preformat patterns on a resin sheet. The roll stamper has the feature that the preformat pattern on the roll stamper has a value of b/a of greater than 1 when the length of the preformat pattern in the direction parallel to the direction in which the resin sheet is transported is defined as a and the length in the direction perpendicular thereto as b.

Abstract: An optical recording medium is disclosed which comprises a substrate containing a polycarbonate resin and a recording layer. The substrate contains copolycarbonate resin having constitutional units represented by the formulae (x) and (y) ##STR1## wherein Z of the formula (x) is a direct bond, alkylidene, --O--, --S-- or --SO.sub.2 --; X is H, halogen, alkyl, aryl, aralkyl, alkoxy, aryloxy or aralkyloxy; R.sub.1 is H, alkyl or aralkyl; m is an integer of 1 to 3; Y of the formula (y) is alkylidene, aryl-substituted alkylene, aryl, --O--, --S--, --CO-- or --SO.sub.2 --; and each of R.sub.2, R.sub.3, R.sub.4 and R.sub.5 is H, halogen or alkyl!.

Abstract: A magnetic field generating apparatus has a permanent magnet arrangement for generating a magnetic field in a magnetic field generating space and a yoke arrangement for forming magnetic circuits for generation of the magnetic field together with the permanent magnet arrangement. The yoke arrangement includes a first pair of yokes arranged facing each other, a second pair of yokes arranged facing each other through which the first pair of yokes are magnetically connected to each other, a third pair of yokes arranged between one end of one of the first pair of yokes and one end of one of the second pair of yokes and between the other end of the one of the first pair of yokes and one end of the other of the second pair of yokes, respectively, and yoke moving units for independently moving the one of the first pair of yokes and each of the second pair of yokes with respect to the third pair of yokes, respectively.

Abstract: A roll stamper for forming an information recording medium substrate has a stamper member having a pattern corresponding to a pre-format for an information recording medium formed in its obverse surface, fixation members fixed to both end portions of a reverse surface of the stamper so as to be integral with the stamper member, and fit grooves formed in a circumferential surface of a specular roll base parallel to the axis of the specular roll base. The fixation members are fitted in the fit grooves, and the stamper member is fixed on the circumferential surface of the specular roll base. The roll stamper also includes a mechanism for applying a tensile force to the stamper member. This roll stamper is used in an apparatus having an extruder for melting and extruding a resin to form a resin sheet and a specular roll facing the roll stamper to continuously form the information recording medium substrate.

Abstract: A process for manufacturing a substrate sheet for information recording mediums using a roll stamper including a flexible stamper member having a pattern corresponding to a preformat for an information recording medium, a first fixing member and a second fixing member integrally joined to both ends of the stamper member, and a pair of fit grooves capable of fittingly receiving the fixing members and formed in the periphery of a specular roll substrate in parallel to the axial direction of the specular roll substrate. The fixing members are fitted to the fit grooves so the stamper member is fixed along the periphery of the specular roll substrate between fit grooves. The first fixing member has a first member with a coefficient of linear expansion substantially equal to the coefficient of linear expansion of the stamper member and a second member having a larger coefficient of linear expansion than the coefficient of linear expansion of the first member.