Abstract: A releasing silicone composition, which in cured form has from medium to high bond release strength, comprising 0.1 to 10 parts by weight of an organopolysiloxane of the formula ##STR1## wherein R.sup.1 is alkyl of 1-3 carbon atoms, or a phenyl group; each R.sup.2 is R.sup.1 or R.sup.3 ; R.sup.3 is C.sub.l H.sub.2l+1 COOCH.sub.2 CH.sub.2 CH.sub.2 -- in which l is an integer from 14-20; m is an integer from 50-200; and n is an integer from 0-20, in a silicone composition comprising 100 parts by weight of an organopolysiloxane which contains at least two vinyl groups bonded directly to silicon atoms, from 0.1 to 30 parts by weight of an organohydrogenpolysiloxane which contains at least two hydrogen atoms bonded directly to silicon atoms, and a platinum catalyst.

Abstract: A solventless silicone composition for release paper containing a partially branched organopolysiloxane as a vinyl base polysiloxane to be cured, which may be applied without containing any organic solvents, and which gives a cured film having excellent slip properties and releasability without using any slip-imparting materials.

Abstract: A dye composition for keratinous fibers is disclosed. The composition comprises a developing substance and, as a coupling substance, a 3,5-diaminopyridine derivative of the following formula (I), ##STR1## wherein R.sup.1 is an alkoxy group or a group ##STR2## wherein R.sup.2 and R.sup.3 may be the same or different and individually represents a hydrogen atom or a hydroxyalkyl group, R.sup.4 a hydroxy, alkoxy, or hydroxyalkyl group, and n is a number of 1-4; or a salt thereof. The composition is capable of dyeing keratinous fibers such as hairs in blue color with a high vividness and with resistances to the light, color change, and discoloration due to shampooing.

Abstract: A recording and/or reproducing apparatus using a recording medium such as a magnetic disc or drum. The apparatus includes apparatus for driving the recording medium, apparatus for detecting the movement of the recording medium, and apparatus for stopping the drive apparatus when the detection apparatus does not detect the movement of the recording medium within a predetermined period of time after the drive apparatus begins to operate.

Abstract: A releasing agent silicone composition which gives an improved cured film for rendering surfaces non-adherent having lasting releaseability, good slip factor, and stable peeling strength and rate of residual adhesive strength, even when the adhesive material is acrylic, employs a first organopolysiloxane having at least two silicon-bonded unsaturated groups, a second organopolysiloxane having at least two silicon-bonded hydrogen atoms, and a third organopolysiloxane having one end terminated by a Si--H bond.

Abstract: The present invention relates to a hot press to manufacture a substrate in which a printed circuit is provided.The hot press comprising at least one of vertically movable heating plates, a freely elevating movable platen which elevates the heating plates to press a plate to be treated between the heating plates, and a detecting means for detecting the movement of the uppermost heating plate when said uppermost heating plate starts to be elevated, in which the elevating speed of the movable platen is changed to a lower speed by a signal generated from the detecting device.This low speed control is carried out as follows.

Abstract: A curable organopolysiloxane composition comprising:(A) an organopolysiloxane having at least two aliphatic unsaturated hydrocarbon groups,(B) a particular organohydrogenpolysiloxane having a group represented by the formula: ##STR1## wherein R.sup.3 is a substituted or unsubstituted monovalent hydrocarbon group and a is an integer of 2 or 3, and(C) a platinum catalyst.This composition has good curing properties, and the silicone film obtained by curing has good release properties which is stable for a long period of time.

Abstract: The inventive silicon-based coating composition provides an antistatic surface-releasing coating layer on a plastic film without the need of any antistatic undercoating. The coating composition comprises, in addition to the conventional ingredients in similar coating compositions including a vinyl-containing organopolysiloxane, an organohydrogenpolysiloxane and a platinum catalyst, a salt, e.g. nitrate and perchlorate, of a metal of the Ist, IInd or VIIIth Group of the Periodic Table and a specific organopolysiloxane having at least one per molecule of alkanolic pendant groups of the formula HO(CH.sub.2 CH.sub.2 O).sub.n CH.sub.2 CH.sub.2 CH.sub.2 --, in which n is 1 to 9.

Abstract: An information signal recording apparatus is arranged to selectively supply either a first information signal or a second information signal to recording apparatus for recording the information signal in a track on a record bearing medium; and to control the erasing action of erasing apparatus for erasing the track in association with the selecting operation on the first or second signal.

Abstract: An erasing device includes a magnetic head, a drive motor for rotating a magnetic disc relative to the magnetic head, an erase signal source for producing an erase signal which varies periodically, and apparatus for causing the head to generate magnetic fields with the erase signal, wherein the frequency f.sub.V of rotation of the magnetic disc and the frequency f.sub.E of the erase signal together satisfy the following condition so that no nodes of the erasing fields are fixed at any point on a track of the magnetic disc during a plurality of rotations of the magnetic disc:f.sub.E .noteq.(k/2)f.sub.Vwhere k is a positive integer.

Abstract: A rotation phase control device which synchronizes the rotation phase of the rotor of a motor with a reference signal and which has a steady-state characteristic compensating circuit improves the starting characteristic of the motor by compensating characteristic control apparatus for varying the compensating characteristic of the compensating circuit based on whether or not the rotation phase of the rotor is within a predetermined synchronization range relative to the reference signal.

Abstract: The inventive compound 4-chloromethylphenyl methyl dichlorosilane is a novel compound not known in the prior art. The silane compound can readily be prepared by the chlorination of 4-tolyl methyl dichlorosilane with sulfuryl chloride as the chlorinating agent. The novel silane compound is useful as a component of an organochlorosilane mixture as the starting material of various kinds of silicone products or, in particular, silicone resins capable of exhibiting high performance, e.g. sensitivity for radiation-induced curing, not obtained by any combinations of known organochlorosilanes.

Abstract: A distance detecting device comprising radiation projecting means for projecting a radiation beam; radiation sensing means which is disposed away from the radiation projecting means with a given length and is arranged to receive a reflected radiation beam coming from an object whose distance is to be detected as the radiation beam is projected from the projecting means; and movable means for relatively varying the incident condition of the projected radiation beam onto the sensing means. The distance to the object is found either by the position of the movable means or by the amount of displacement thereof which occurs at a time point at which the sensing means optimally receive the reflected radiation beam coming from the object in the process of relatively varying the incident condition of the projected radiation beam onto the sensing means.

Abstract: The disclosed motor control circuit includes a speed loop controlling the rotational speed of the rotor of a motor. A phase control loop controls the rotational phase of the rotor, and a voltage control loop controls a voltage applied to a winding of the motor according to the current flow through the winding. The voltage control loops maintains the rotational speed and rotational phase constant despite variations in the load torque. The control circuit is especially well-suited for motors having a small torque.

Abstract: The disclosed apparatus determines optically whether an object is located within a first range of distances from the apparatus or a second range of distances from the apparatus. A radiation projecting arrangement projects a beam towards the object and a receiving arrangement disposed a predetermined distance transverse to the object direction receives the radiation reflected from the object. A pair of radiation sensors in the receiving arrangement each produce an electrical output corresponding to the received radiation. A circuit responds to the outputs of the sensors to determine whether the object is located within a first range or a second range. The circuit arrangement connects the radiation sensors so as to subtract their outputs, and one of the sensors is provided with a more extensive radiation receiving area than the other. This extends one of the range of distances.

Abstract: A distance measuring device having a light projecting element and a light receiving or sensitive element normally brings a photo-taking lens into an in-focus position in accordance with a signal produced from the light receiving element. When the quantity of light received by the light receiving element exceeds a predetermined level due to high brightness of an object to be photographed, this condition is detected and the lens is either brought into a predetermined position or an in-focus position on the long distance side to avoid a focal deviation for the high brightness object.

Abstract: In an auto focus type camera employing an intermittent infrared-ray light to an object to be photographed and which uses the reflected intermittent light from the object as a focusing signal, a signal detecting device is employed. The signal detecting device detects the signal from a signal source oscillating with a certain determined frequency and includes a detecting circuit, a driving power source for the detecting circuit and a signal producing circuit. The signal producing circuit produces a quasi-signal equivalent to a fluctuation signal from the detecting source which depends upon the fluctuation of the driving power source for the detecting circuit. The fluctuation signal from the detecting source is thus compensated by the quasi-signal from the signal producing circuit. Thus the effect of the fluctuation of the power source is substantially eliminated.

Abstract: In the distance measuring system disclosed, light reflected from an object is converted into an electrical signal and processed to detect the distance to the object. Before the distance detecting operation, a signal level detecting operation is carried out in the distance measuring range and the gain of the signal processing or the amount of light for illuminating the object is automatically set for the distance detecting operation.

Abstract: The active automatic focusing apparatus disclosed scans the object to be photographed with light from a light projector and includes a sensor sensing reflected light, a peak detector for detecting the peak value of the signal sensed by the sensor, a control producing a stop signal suitable for stopping focusing movement of the objective lens in accordance with the output of the peak detector, and a stop device for stopping the movement of the objective lens on the basis of the output of the control. A comparator compares the level of the detected signal with that of a preset noise signal so as to produce a first control signal when the level of the detected signal is higher than that of the noise signal. A given distance detector produces a second control signal when the objective lens is moved to a predetermined position corresponding to a distance at which a peak of the detected signal can be detected by the peak detector.

Abstract: The disclosed camera is provided with an automatic focus adjusting device for automatically adjusting the focus of an objective lens. A timer circuit, adapted to be actuated in synchronism with the automatic focusing device initiating focus adjustment of the objective lens, sets a predetermined time and inhibits the actuation of a shutter release device for the predetermined time. In a preferred embodiment, the shutter release actuation is controlled in accordance with the logic condition of a focus adjustment completion signal obtained from the automatic focus adjusting device and a time count completion signal produced when the predetermined time has elapsed. In another embodiment of the present invention, a battery voltage detecting circuit prevents shutter release when the voltage of the battery energizing the camera is below a predetermined level.