Abstract: The apparatus includes a vertically movable paper tray that descends to its lowered condition when a copier door is opened for resupply of copy sheets, a switch for detecting the fully raised sheet feeding condition of the tray, and a photosensor for detecting the presence of paper on the tray as the tray is raised toward its fully raised condition. A copier operation enabling signal is generated in response to the position of the door and the photosensor output, with a suitable time delay to prevent copying until the tray has attained its fully raised condition following detection of the presence of paper by the photosensor.

Abstract: An electric curling iron for producing a spiral curl giving the impression of a stream-like natural and soft wave is constructed in the form of a scissors having one blade comprising an electrically heated rod and the other blade comprising a clamp cooperating with the rod to press hair to be curled therebetween. The surface of the rod has a plurality of side by side spiral polygonal edges. The clamp is an arcuately shaped cover longitudinally coextensive with the rod and in contact with the polygonal edges thereby, leaving a free space between the clamp and heater rod for the escape of vapor. The arcuately shaped clamp may have a radius smaller than that of the rod and may be provided with a rubber cover. Since the edges are obliquely pressed against the hair during use possible hair damage by heat and pressure is reduced.

Abstract: In electrostatic recording apparatus recording head such as an optical fiber tube (OFT) is closely spaced from the image forming member, such as a drum covered with a photosensitive substance. The electrostatic latent image is generally formed with the use of a toner applied to the drum. Despite the use of various cleaning devices, toner particles are carried by the drum into the narrow gap between the OFT and the drum and adhere to the scanning face of the OFT, interfering with the projected image. The present invention provides a manual or automatic cleaning device positioned in the narrow gap for removing adherent toner or other interfering material from the scanning face of the OFT.

Abstract: A paper feeding device used for feeding stacked paper to an electrophotographic copying machine is provided with a lift for a stack of papers, which move the top sheet against a swingably supported feeding roller as the size of the stack decreases under use. Forwardly of the feeding roller in the direction of travel of the paper is a plate in frictional contact with the roller, the paper being thus fed forwardly to the copying machine through the nip between the roller and plate. This arrangement avoids the problem of a multifeed of the sheets. The feeding-out operation may be further improved by the provision of separating claws engaging the leading corners of the paper as it passes from the feeding roller. Raising of the lift is controlled by a detecting device actuated by position of the swingable support for the feeding roller.

Abstract: A turnover apparatus for use in the secondary working stage of a press line is disclosed. The apparatus includes a bed that rotatably supports a main shaft, a pair of links the base of each of which is rotatably connected to each end of the main shaft, an inverting shaft parallel to the main shaft which is rotatably connected to the top end of each link, a piston rod in a driving cylinder connected to one of the two links, said piston rod causing the link to rotate about the main shaft, a pinion fixed to the main shaft, a piston in an inverting cylinder connected to a rack that engages the pinion, two sprockets of the same diameter fixed to both the main shaft and inverting shaft, a chain extending between the sprockets, an inverting plate fixed to the inverting shaft horizontally and a receiving plate rotatably connected to the inverting shaft.

Abstract: An ultrasonic probe is positioned within a hollow body such as a pipe for detecting possible flaws in the body wall. The probe is designed for rotational and longitudinal movement in said pipe and includes an ultrasonic transmitter/receiver mounted eccentrically within a liquid filled chamber of the probe, so that transmitted impulses strike the inner wall of the pipe at such an angle that the angle of refraction of the sound wave in the material of the wall is always less than 90.degree..

Abstract: The invention is directed to an improved method and apparatus for controlling the aperture blades of a camera in which the aperture stop-down position is controlled by the number of pulses applied to pulse motors. In the present case, the unit-pulse numbers which determine the aperture stop-down position are split into at least two groups, one of which is a multiple of the other, and the blades are moved into the desired position by applying both groups of pulses to the pulse motors.

Abstract: A large-aperture single lens with aspherical surfaces to be used as a pickup lens for video disks, especially for tracking the video disk by directly moving the pickup lens. It is preferable that the single lens is made of plastic material in order to make it compact and light in weight. Both refractive surfaces of the single lens are arranged to have positive refractive powers in order to make the working distance of the lens long. Spherical aberration of the single lens is corrected to the degree that the diameter of the circle of confusion thereof is decided approximately by diffraction of light. Both refractive surfaces of the single lens are formed as aspherical surfaces and the shapes of the refractive surfaces are determined so as to correct aberrations including the sine condition to the required range, by taking the error to be caused at the time of manufacture into consideration.

Abstract: The slit exposure optical system for a copying machine generally includes two mirror-carrying movable tables of which one is driven at half the speed of the other. Normally each table is driven from one and the same end which means that the other end of each table must follow. If such following is not precise, aberrations in the optical system result. The present invention provides means for interconnecting the nondriver ends of the tables in such a manner that the movement of the nondriver ends will precisely follow the movement of the driver ends and aberrations are thereby avoided.

Abstract: In the optical system of an electrophotographic copying apparatus embodying movable mirrors, it is of the utmost importance that these mirrors be properly aligned relatively to one another. In the present invention, two of the mirrors mounted at right angles to one another on a slidable frame which moves at half the speed of another movable mirror, are mounted on that frame for slight pivotal movement. This pivotal movement is controllable to provide adjustment of errors in the optical system and when adjustment is completed the mirrors are fixed in place.

Abstract: The invention is directed to an arrangement controlling the film winding mechanism of a camera. In particular, the take-up amount of the film is monitored, and if the take-up amount of the film does not fall within the prescribed amount of film within a prescribed period of time, this is detected and a control circuit is actuated to stop the film-winding operation.

Abstract: In the transfer of a toner image from a transfer medium such as a belt to transfer material such as paper, heating and fixing of the toner is required. According to the present invention, two sources of heat are used, one applied to the transfer medium and the other to the paper, the heat applied to the transfer medium being insufficient to melt or fuse the toner, with the heat applied to the paper being greater than necessary for fusing. When the hot paper contacts the underheated transfer medium the temperature of the latter is then and only then increased to the fusing temperature and the transfer and fixing of the toner image upon the paper takes place.

Abstract: A wide magnification-variable range zoom lens system having a short total length and a small diameter permitting zooming from the wide angle to a long focal length comprises five lens groups having positive, negative, positive, negative and positive focal lengths respectively, a partial lens system consisting of said first and second lens group having a negative focal length over the entire zooming region, a partial lens system consisting of said third through fifth lens groups having a positive focal length, all of said lens groups moving along the optical axis to contribute to the variation of focal length of said zoom lens system, and said first lens group widely moving toward the object side when total focal length of the zoom lens system varies from the shortest to the longest.

Abstract: An ample case is made of a base sheet folded into a rectangular form when seen in side elevation. Ampules are accommodated in the case, being spaced side by side at with the bottoms of the ampules adhering to the bottom wall of the case. When an ampule is to be used, a segment of the base sheet is separated off with the ampule attached thereto along a severance line formed in the base sheet between adjacent ampules. A side wall of the case bears the name of the preparation in the ampules and like required information, thus eliminating the necessity of printing or labelling the ampules individually.

Abstract: In a copying machine in which the distance of projection scanning is varied by relative movement between the copy board and the optical system in accordance with the size of the original, indices are provided on the copy board for positioning the original so that the shorter side of the original always corresponds to the direction of scanning. This unification of original placement results not only in a shortening in the distance of the projection scanning but an increase in copying speed.

Abstract: A recording apparatus in which the coordinates of a portion of an image to be extracted or erased are determined, a scanning position is detected, and an image signal is switched for blocking or allowing the passage of image signals when said predetermined coordinates coincide with said detected position. An extrction means for extracting a portion of a document image or, an erasure device for erasing a portion of a document image, a designating device for designating a portion to be extracted or erased, and a numerical device for introducing the coordinates of the portion to be extracted or erased are provided.

Abstract: A plethysmograph is provided with a sensor for detecting an increase or decrease in the blood volume of a vascular bed, preferably by photoelectrically detecting blood content in a finger-apex position. The detection signals derived from the sensor are twice or triply differentiated to produce an acceleration curve indicative of blood circulation whose interpretation effectively leads to a diagnosis of the entire circulatory system including early signs of malfunction. Detection of the presymptoms of arteriosclerosis, myocardial infarction, cerebral apoplexy, subarachnoidal hemorrhage, etc. is possible and the apparatus may be used to monitor the patient's condition during subsequent treatment. A visual or printed card of the diagnostic results can be provided.

Abstract: In an electrophotographic copying machine of the type using a slit exposure optical system with reciprocating carriages, movement of these carriages at the time a transfer medium is being processed in the usual fixing device often causes a jittering of the apparatus which adversely affects the quality of the image being fixed. The method according to the present invention avoids this problem by assuring that there is no movement, particularly no return movement of the carriages from the time the transfer medium enters the fixing device until it is discharged therefrom.

Abstract: A method for image reproduction using an ion modulation electrode adapted to form images on a charge receptor. The ion modulation electrode is divided into a plurality of groups, and digital or analog image signals are held in element corresponding to the group and are formed parallel signals, and the parallel signals are applied to respective groups. The ion modulation electrode includes a continuous layer of conductive material, a segmented layer of conductive material and an insulating layer interposed therebetween. An image reproducing apparatus which includes an ion generator, an ion modulation electrode dividing electrically into a plurality of groups and modulating ion flow generated the ion generator, and a charge receptor receiving modulated ion flow. To the groups are applied image signals which are held in element corresponding to group and are formed parallel signals.

Abstract: A camera may contain a plurality of operable elements such as small motors for actuating mechanisms such as a mirror, shutter, diaphragm, film, transport, etc., supplied with power from a self-contained battery. Because of the low power of the battery certain of the operable elements are actuated sequentially whereas parallel operation thereof would be preferable. The present invention provides circuitry which automatically changes the sequential operation of the elements to parallel operation whenever the self-contained source of power is replaced by an external power source.