Abstract: A rubber composition having low friction is proposed which contains a thermoplastic fluororesin, a thermosetting fluororubber and a low-molecular weight fluorine-containing polymer.

Abstract: A vulcanizable fluororubber composition which comprises:(a) a fluorine-containing elastomeric copolymer of vinylidene fluoride with at least one other ethylenically unsaturated monomer copolymerizable therewith;(b) an organic peroxide;(c) a polyfunctional compound;(d) at least one member selected from the group consisting of bivalent metal hydroxides and bivalent metal oxides; and(e) an organic base.

Abstract: A signal reproducing system using light for reproducing video or other information signals recorded on a recording medium, such as a rotatable disc, employs a semiconductor diode laser for directing the light to the recording medium which has reflective portions and nonreflective portions representing the recorded signals. A cleavage face of the semiconductor diode has an antireflecting coating through which the light is directed toward the recording medium so that the semiconductor diode laser emits laser light only when the semiconductor diode laser receives the reflection from the reflective portions of the recording medium, and a transducer receives the laser light emitted from another cleavage face of the semiconductor diode laser to reproduce the recorded signals in response to the emitted laser light.