Abstract: In order to drive a punching machine electrically, with the aid of a double-armed rocker (70) a translational motion for the compression beam (10) is generated on the one hand, and a rotary motion for an opposing drive on the other hand. On the one side, the double-armed rocker (70) is driven by a rotating clutch shaft (50) by way of a crank gear (60-66) and, on the other side, a chain link (73) serves to control the compression beam. The opposing drive is operated by means of a one-arm rocker (75) and, also, by means of a chain link (76). To ensure the execution of an exact cycle, an engaging and disengaging claw clutch (31, 36) is present. The cycle is maintained by a cam disk arrangement (51) on the one hand, and a coupling groove (37) on a coupling box (32) with a coupling bolt (38), on the other hand. The above provides the electric drive for a rectilinear punching machine for punching sheets of paper for mechanical binding systems.

Abstract: An ink-on-demand type ink jet printer including a printer head and an ink container. The printer head includes nozzles for ejecting ink droplets, pressure chambers for pressurizing ink therein and ink passageways for supplying ink from the ink container to the pressure chambers. The printer head is movable in a linear direction for printing across a sheet of recording paper. The ink container includes a vertical partition with the vertical partition having a wall disposed adjacent to an outlet of the ink container and extending substantially perpendicularly to the direction of movement of the printer head. The ink container includes an interior divided by the vertical partition into a main chamber of a first volume defined between one wall surface of the vertical partition and a wall surface of the ink container and an auxiliary chamber of smaller volume defined between the opposite wall surface of the vertical partition and another wall surface of the ink container.

Abstract: Apparatus for laminating articles such as cards, ID-cards and the like, with the aid of films, consisting of plastic foil that can be activated by heat, comprising two heated pressing rollers that can be driven, which are included in frames that are composed of side plates and through which the films and the article to be laminated that is placed therebetween are passed, wherein the frame, composed of side plates, for the one pressing roller is arranged fixedly whereas the other frame, composed of side plates, for the other pressing roller can rotate about a pivot located at a distance from the pressing roller. Furthermore the apparatus is provided with a device for lifting the films from the pressing rollers, whereas the pressing rollers are heated interiorly and exteriorly, or only exteriorly.

Abstract: A liquid crystal display panel having a backlight for providing high brightness, uniformity of illumination intensity, small thickness, high efficiency and which can be manufactured at a low cost. The display device includes a liquid crystal display panel, a light source for illuminating the liquid crystal panel, a light passage member which can be formed of either transparent or translucent material disposed between the liquid crystal panel and the light source. The light source inlet side of the light passage member is formed with a recess so that the thickness is reduced at the region opposed to the brightest region of the light source. A light reflecting member substantially surrounds the light source and the light passage member is formed with an opening facing the liquid crystal panel to expose a surface portion of the light passage member. The light source can either be incandescent light bulb or a cold-cathode discharge tube.

Abstract: An ink-on-demand type ink jet printer having a printer head. The printer head includes a substrate having a substantially planar surface and an opposing substantially planar surface and a vibratory plate having a cooperating substantially planar surface. The planar surfaces cooperate to define at least one nozzle, pressure chamber and ink supply passage therebetween. An ink container is integrally joined to the printer head with the ink container having a vent hole in an upper portion thereof. Separate means are provided for pressurizing the ink in the pressure chamber and for preventing air bubbles from entering the ink supply passage. The opposing substantially planar surfaces of the substrate define a wall of the ink container.

Abstract: A liquid crystal display device having a first transparent substrate, a second transparent substrate and a liquid crystal composition sandwiched between the first and second transparent substrates. The first transparent substrate has a plurality of first main electrodes and a plurality of first auxiliary electrodes extending from the first main electrodes. The second transparent substrate has a plurality of second main electrodes. The second main electrodes are positioned so that the second main electrodes have mutually confronting portions with the first main electrodes, defining main pixels therebetween, and with the first auxiliary electrodes defining auxiliary pixels therebetween. The presence of the liquid crystal composition between the first transparent substrate and the second transparent substrate in the regions of the main pixels and auxiliary pixels allow an image display in the main pixel and auxiliary pixel regions.

Abstract: An analog electronic timepiece wherein oscillation of the oscillator circuit is stopped when the watch is placed into a reset mode. This lowers power consumption and provides for greater battery life during shipping and stocking periods. In one embodiment of the invention the oscillator is stopped immediately upon placing the watch into a reset mode. In another embodiment of the invention, cessation of oscillation does not occur until a predetermined delay after reset.

Abstract: An improved synthetic resin opthalmic lens and a method for treating the surface of the lens are provided. The lens is formed by polymerizing at least one bis(allyloxycarbonyloxy-alkoxy) dihalide-phenyl alkane and one bifunctional allyl compound, optionally with a bis(allylcarbonate) compound. The lens is chemically treated with an aqueous solution of polyethyleneglycol and an alkali metal hydroxide and a surface hard coat is formed on the treated surface.

Abstract: A luggage construction wherein a flexible reinforcement spring is utilized. A flat spring having a repeating U-shaped pattern disposed on a wire is provided around the peripheral wall of the luggage to enhance structural integrity and assist in returning the luggage to its original shape after being deformed.

Abstract: A wire dot printer that requires no cover over the wire portion of the printer head when not in service in order to prevent ink drying is constructed using an ink supply devoid of water. The ink composition used in such an ink wire dot printer contains a water soluable dyestuff or an oleaginous dyestuff which is soluable in a polar solvent, a polyhydric alcohol or a derivative thereof and a water soluable amine.

Abstract: A hand-held printing calculator for printing calculating results on elongated paper strips from a bundle of paper strips disposed within the calculator is provided. The calculator includes a microprinter having a paper feeding assembly including feeding elements disposed before and after the print position and in the same plane as the advancing paper for maintaining the paper flat during printing. In another embodiment of the invention, a detection sensor detects the absence of a paper strip at the print position for generating a signal for feeding the next paper strip so that paper is continuously fed to the print position.

Abstract: A liquid crystal optical device having improved dielectric relaxation at low frequency is provided. The liquid crystal optical device includes a liquid crystal panel having an optically active nematic liquid crystal composition with a dielectric anisotropy which becomes zero at a crossing frequency ("f.sub.c ") of 100 KHz or less at atmospheric temperatures and is positive at frequencies lower than f.sub.c ("f.sub.l ") and negative at frequencies higher than f.sub.c ("f.sub.h "). The interior surfaces of the substrates in the liquid crystal panel haven been oriented so that the liquid crystal molecules adjacent to the surfaces are oriented parallel to the directions of orientation. A polarizer is disposed on each outer surface of the panel with the axis of polarization substantially orthogonal to each other. The axis of polarization are disposed at a position of .+-.45.degree. to the bisector of the two directions of orientation on the interior surfaces of the substrate.

Abstract: A synthetic resin lens having a refractive index of at least 1.55 and an antireflection coating thereon is provided. The antireflection coating includes at least a hard coat layer formed of a dielectric substance having a refractive index n.sub.h disposed on the lens having a refractive index n.sub.s (n.sub.s .noteq.n.sub.h) and at least one antireflection layer of a dielectric or metallic material disposed between the lens and the hard coat layer. The antireflection layer has a refractive index n in the range represented by the formula: ##EQU1## and an optical film thickness of 4 (where denotes a wavelength in the range between about 450 nm to 650 nm) or two or more plies optically equivalent to a single layer of the antireflection material. The synthetic resin lens may be prepared by radical polmerization of a mixed monomer solution of styrene, 2,2-bis[3,5-dibromo-4-(2-methacryloloxyethoxy)phenyl]propane, and ultraviolet absorber and a light stabilizer.

Abstract: A progressive multifocal ophthalmic lens. The lens includes a lens surface having a far vision viewing, a near vision viewing zone and an intermediate vision viewing zone disposed therebetween. A prism having a base is added to the lens. The base lies in the direction of 90.degree. to the lens surface. The prism is added in order to improve chromatic aberration and not to remedy squint.

Abstract: A driving circuit for a matrix display panel synchronizes composite video signals to drive a plurality of data lines and a plurality of scanning lines arranged in a matrix. The driving circuit blocks the data of the composite video signal approximately during the vertical blanking interval of the video signal. Further, during periods when signals are not applied to the data lines, the voltage level is maintained substantially equal on both the scanning and data lines. The RMS potential on the display is thereby reduced and higher contrast is provided. In an alternative embodiment, lines of data are also omitted at regular intervals during the effective display period.