Abstract: A metal easy open can lid, and a process for producing the same, wherein the can openability is improved and the occurrence of defects in the resin film at the time of shaping is eliminated whereby repair coating of the inner and outer surfaces are made unnecessary by making the cross-sectional shape of the opening guide groove of the easy open can lid an S-shape are provided, wherein, when forming the opening piece for easy manual opening in the metal lid, the properties of the resin film on the metal sheet, the shape and dimensions of the shoulder portions of the punch and die, the clearance, the residual thickness of the opening guide groove, the degree of the push-back processing, etc. are specified so as to achieve a superior can openability without breakage of the resin film by forming an opening guide groove with an S-shaped cross-section.

Abstract: An adjustment device of the invention is used for an electronic part installation apparatus having a head portion for holding an electronic part and a moving device for moving the head portion from a supply section to an assembly section. The adjustment device is formed of a base member moving under the head portion, a detecting device for detecting the electronic part held by the head portion, and a control device electrically connected to the detecting device. The detecting device is fixed to the base member and moved under the electronic part while the electronic part is moving from the supply section to the assembly section. During the movement, the electronic part and a position of the electronic part relative to the head portion are recognized. The control device has a memory to which ideal data for the electronic part and the position of the electronic part relative to the head portion are inputted in advance.

Abstract: A eye fundus examining apparatus includes a first optical system for projecting measurement light onto the fundus of an eye, a deflecting member provided in the first optical system for deflecting the measurement light, a light receiving element for receiving the reflected light of the measurement light from the fundus of the eye, a predetermined parameter of a target on the fundus of the eye being measured from the light reception information of the light receiving element, a second optical system for projecting a tracking light beam to an area including the target on the fundus of the eye, an image pickup element for receiving the image of the target illuminated by the tracking light beam, and a control system for driving the deflecting member and directing the measurement light onto the target so that the distance of deviation from the illuminated point by the measurement light under an ideal condition on the fundus of the eye to the target image received on the image pickup element may become a set value,

Abstract: Provided are an amphipathic compound represented by any of the following Formulas: ##STR1## (R.sub.1 is a linear or branched, saturated hydrocarbon group having 6 to 48 carbon atoms, or a linear or branched, unsaturated hydrocarbon group containing 1 to 12 unsaturated double bond and having 6 to 48 carbon atoms; Y is NH, N--(CH.sub.2 --CH.dbd.CH.sub.2), or O; Q is --CH.sub.2 --C(R.sub.2).dbd.CH.sub.2 or --R.sub.4 --O--CO--C(R.sub.2).dbd.CH.sub.2 ; and M is alkali metal, an ammonium group, or --(CH.sub.2 CH.sub.2 O).sub.m H), a copolymer of the amphipatic compound with a copolymerizable ethylenically unsaturated compound and, a paper making additive containing a water soluble or dispersible high molecular compound as an active ingredient and processes for producing these high molecular compounds.

Abstract: A polyester resin composition comprises: an aliphatic polyester having a number-average molecular weight (Mn) in a range of 10,000 to 100,000; and a crystalline nucleating agent, wherein the aliphatic polyester and the crystalline nucleating agent are mixed in such that a half value width of an exothermic peak based on an annealing crystallization of the aliphatic polyester measured by differential scanning calorimetry in an atmosphere of nitrogen at a cooling rate of 3K/minute is not more than 15K. This polyester resin composition has a biodegradability and a high crystallization rate. The polyester resin composition also has excellent mechanical properties and eliminates a precise temperature control during a molding process which saves labor force resulting in desirable moldability and productivity. For the described beneficial properties, the polyester resin composition can be readily processed into a fiber, a molded article, sheet, film and the like.

Abstract: A transfer separator comprises a transfer belt or other transfer mechanism for carrying and conveying a sheet to apply a toner image from an image carrier onto the sheet and separating the sheet from the image carrier. A bias application electrode applies a transfer bias to the transfer belt, wherein a relation of Lp.gtoreq.aV, and a=1 mm/KV is established when the minimum distance between the image carrier and surface of the bias application electrode is set to Lp (mm) and the maximum voltage applied to the bias application electrode is set to V (KV) . Preferably, the bias application electrode has a coated layer, and the difference in thickness resistance between the coated layer and the transfer belt is within two orders of magnitude. The hardness of the coated layer is preferably equal to or greater than the hardness of the transfer belt.

Abstract: An inexpensive enclosed type rotary compressor capable of diminishing vibration. A balance weight is split into two parts. A first balance weight is formed by die casting, forging, sintering or the like to be in such a form that its end portions each having a hole for accommodating by a fixing protrusion are thinner than the remaining portion, and a second balance weight is formed as a single plate or laminated plates in plural layers and securedly sandwiched between the end ring of a rotator and the first balance weight. As a result, the balance weight can be standardized, realizing cost efficiency.

Abstract: In an image forming apparatus, a lubricant is fed to an image carrier on which a toner image is to be formed. An endless rotatable transfer member conveys a recording medium to which the toner image is to be transferred from the image carrier. The transfer member is capable of contacting the surface of the image carrier to which the lubricant has been applied. As a result, an adequate amount of lubricant is evenly applied to the transfer member to reduce the coefficient of friction of the surface of the transfer member, thereby enhancing the cleanability of the transfer member.

Abstract: In an apparatus for mounting electronic components of the invention, a moving part is attached to a frame of the apparatus and moved freely in front and rear directions by a moving device. Also, first and second movable members are attached to the moving part and freely and independently moved in right and left directions by first and second moving members. First and second fitting heads are attached to the first and second movable members, and independently and freely moved between a supply section and a mounting section in the frame. When the electronic components are held at the first and second fitting heads, the first fitting head moves the electronic components from the supply section to mount onto a substrate in one mounting section, and the second head moves the electronic components from the supply section to mount on a substrate of a different mounting section in the apparatus.

Abstract: A thermal head comprising heating resistors connected in series and arranged on an edge portion of a substrate, first group switching elements respectively connected to first group electrode patterns, second group switching elements respectively connected to second group electrode patterns, and a selecting circuit for selecting one group or the other group of every other switching elements in the second group switching elements, and for selecting at least one of the first group switching elements, whereby a high quality of printing is attained without using diode array.

Abstract: A process for producing a high-molecular-weight polydioxolane, which includes the steps of: polymerizing 1,3-dioxolane using a polymerization catalyst comprising a heteropolyacid and a ketone; and neutralizing the resulting polymerization reaction product using an organic amine and/or ammonia. A hydrophilic film, which includes a resin including a polydioxolane and having a particular molecular weight and has a particular crystallinity and a particular spherulite's size. A film crumbly in cold water is produced by forming a film under particular forming conditions from a resin including a polydioxolane and having a particular molecular weight, or by subjecting an already formed film to particular thermal hysteresis.

Abstract: A permanent magnet rotor includes a rotor shaft, a yoke mounted on the rotor shaft to form a magnetic path, a plurality of permanent magnets secured to the outer surface of the yoke, and a non-magnetic metallic cylindrical cover mounted on the permanent magnets. The cylindrical cover has a plurality of axially equidistantly spaced grooves defined in the outer surface thereof so as to extend circumferentially thereof. The cylindrical cover may have a continuous spiral groove in place of the plurality of axially equidistantly spaced grooves.

Abstract: An ink composition is disclosed which comprises a water-insoluble colorant, a water-soluble organic solvent, and water, the ink composition being substantially free from any dispersant, the water-insoluble colorant being in a dispersed state in the ink composition. The ink composition of the present invention, despite the fact that no dispersant is used, is stable and can provide a good print. A process for producing the above ink composition is also disclosed. According to this process, a stable ink composition can be produced without the step of dispersing a colorant by means of a ball mill or the like.

Abstract: A process for preparing an acrylamide polymer is herein disclosed which comprises the step of initiating polymerization in the presence of an oxidation-reduction system polymerization initiator comprising two or more kinds of oxidizing agents and a reducing agent. According to this process, the polymerization rate can be remarkably increased without bringing about a decrease in the molecular weight of the polymer, and hence, restriction on manufacturing facilities and apparatuses can be relieved and productivity can be remarkably enhanced, which permits a decrease in manufacturing cost.

Abstract: There is provided a process for producing an alicyclic diketone compound represented by the formula (1) ##STR1## wherein X is a single bond, --CH.sub.2 --, --C(CH.sub.3).sub.2 --, --O-- or --SO.sub.2 --, R.sup.1 and R.sup.2 each represents an alkyl group having 1 to 6 carbon atoms, m and n are 0 to 2, comprising dehydrogenating an alicyclic diol compound represented by the formula (2) ##STR2## wherein X, R.sup.1, R.sup.2, m and n are as defined above in a liquid phase in the presence of at least one member selected from the group consisting of copper type catalysts and Raney type catalysts.

Abstract: A fire-resistant glass comprising:(a) at least two plate-shaped vitreous materials arranged parallel and apart, the sides of the plate-shaped vitreous materials facing each other being treated with a silane coupling agent,(b) a spacer provided between the plate-shaped vitreous materials at their peripheries via an adhesive,(c) a sealing agent adhered to the outer surface of the spacer, and(d) an aqueous gel filled into the space formed by the plate-shaped vitreous materials and the spacer, the aqueous gel comprising a polymer of a particular (meth)acrylamide derivative, a particulate metal oxide, an aqueous medium and an antifreezing agent.This fire-resistant glass has an excellent fire-resistant property; is stable over a long period of time and is unsusceptible to deterioration.

Abstract: The present invention provides an aqueous gel comprising a polymer of (meth)acrylamide or particular (meth)acrylamide derivative(s), particulate metal oxide(s) and an aqueous medium, a process for producing said gel, and products utilizing said gel.This aqueous gel can be produced so as to have transparency, has fire resistance and can prevent the spreading of flames, and is highly elastic. The aqueous gel, when produced as a transparent gel, becomes cloudy when heated or cooled and is useful for the shielding of heat rays or cold radiation.

Abstract: A field oxide film 12, an n.sup.+ -type dispersion layer 13, and an interlayer insulating film 14 are formed on a p-type semiconductor substrate, and a contact hole is formed therein. A titanium film 15 is deposited on the surface formed thus far, and arsenic is ion-implanted into a contact region through the titanium film, forming a phosphorus-dispersed layer. The substrate is heat-treated to activate the impurity in the phosphorus-dispersed layer 16 and to cause titanium and silicon to react with each other, thereby forming a titanium silicide film 17 in the contact region. A metal film is then deposited and patterned into a metal wiring 18 without removing a silicon nitride film 15a which has been produced from the titanium film.

Abstract: A method for producing an aliphatic polyester having a biodegradability and a higher melting point than conventional aliphatic polyester by suppressing a volatile component generated by side reaction or decomposition reaction with industrially good efficiency and economically in a relatively short period of time, the method enabling a polymerization at vacuum which permits a use of general vacuum pump. The aliphatic polyester can be obtained, for example, by a ring-opening copolymerization of a cyclic acid anhydride with a cyclic ether in a presence of a zirconium compound. The aliphatic polyester also can be obtained by performing a polymerization of raw materials of the aliphatic polyester so as to have a degree of viscosity in the range of 10-10,000 poise when 0.1-30 hours elapsed after the reaction started at reaction temperature of the reaction system under conditions of reaction temperature in the range of 180.degree. C. to 280.degree. C. and reaction pressure in the range of 0.3 mmHg to 3.0 mmHg.

Abstract: A positioning device and method includes a motor having a rotation axis, a driver for driving the motor on the basis of control information, a detector for detecting position information of the rotation axis of the motor, and a digital signal processor for performing an operation on the control information in accordance with the position information detected by the detector.