Abstract: An ignition apparatus for an internal-combustion engine, comprises an ignition coil for generating a high-voltage electricity, a socket for supplying the high-voltage electricity to an electrode of a spark plug, and an electrically insulating resin support member which adheres to both of the ignition coil and the socket to support them integrally thereon, and at least a part of the socket is made of an electrically conductive resin.

Abstract: An ignition distributor wherein at least either one of the discharge element of a stationary electrode and the discharge element of a rotary electrode are composed of a sintered body comprising at least a ferrite and silicon oxide and have a surface precipitate layer having a thickness of from 1 to 7 .mu.m and a silicon oxide content larger than that of a core portion of the sintered body and the discharge element has an electric resistivity of from 10.sup.4 to 10.sup.6 .OMEGA. in a portion from a site at which said voltage is applied to the discharge element to a site at which an electric discharge occurs.

Abstract: A contactless ignition apparatus for an internal combustion engine comprises a resin-molded closed magnetic circuit type ignition coil including an iron core constituting a closed magnetic circuit, a primary winding and a secondary winding wound around the iron core, respectively, and mold resin for insulating the primary and secondary winding, a semiconductor switching circuit for interrupting a current flowing to the primary winding, and an ignition plug to which a high voltage generated in the secondary winding upon interruption of the primary current flow to the primary winding by the semiconductor switch circuit. The falling rate dI/dt of the primary current upon interruption thereof by the semiconductor switching circuit is set at a value in a range of 0.2 to 0.4 A/.mu.s. Noise radiation from the ignition coil can be reduced significantly.

Abstract: A tape printer for use with a detachably loaded tape cassette including a thermal printing head secured to a frame, and a platen roller mounted together with a tape feed roller in a platen holder rotatably mounted on the frame. When the tape cassette is loaded in the tape printer, an image source tape in the cassette is biased by a spring member outwardly of a head insertion recess. In a subsequent printing operation preparation, the spring member is engaged with a spring pushing piece on the platen holder to release the biasing to the image source tape and permit contact thereof with the printing head.

Abstract: A tape cassette is disclosed, in the housing of which are provided accommodation sections accommodating an ink ribbon, an image receiving tape and an adhesive tape, respectively. The tape cassette is set in a tape printer, and printing is done in a mirror image transfer mode on the printing surface of the tape from the printing head via the ink ribbon. After the printing, the tape is fed out together with the adhesive tape applied to the printing surface.The cassette housing can be used for a label tape cassette and also for an instant lettering tape cassette, and the image transfer mode of the tape printer is never changed irrespectively of the types of tape cassettes used with the tape printer.

Abstract: A ribbon cartridge includes a pair of housings having apertures, a pair of ribbon spools rotatably supported in the housings, and a ribbon wound on the spools. A portion of the ribbon is exposed to the outside of the housings through the apertures when the ribbon is fed from one spool to the other. Each housing rotatably supporting a hold member. The hold member has a holding portion which is movable across a ribbon passage within the respective housings for holding the ribbon and has an engaging portion which is engageable with teeth on a flange of each spool, and each hold member is biased by a spring member. When the cartridge is removed from the typewriter, the holding portion is moved across the ribbon passage and a portion of the ribbon slackened and exposed from the housing is tensioned.

Abstract: A ribbon cartridge for typewriters having a plurality of type bars which have the respective type fonts or characters at the top portions thereof and which are struck toward a printing point on a platen during the printing operation. The ribbon cartridge includes a pair of housings made of plastic material and a connecting arm member made of a metal strip for interconnecting the two housings. The connecting arm member has its center portion positioned in front of a type bar guide (on the side of the typist) and is formed substantially into a U-shaped opening as seen from the front side of the typewriter in order to permit the printing operation of the respective type bars. A spool for winding the printing ribbon is rotatably mounted in each housing, the spool being operatively connected in the usual manner to an ordinary ribbon drive means which is provided on the typewriter. Each one of the housings is provided with an aperture or slot to allow passage therethrough of the printing ribbon.