Abstract: A magnetic image detection device which measures a magnetic image in the first or second dimension by using a superconducting body. In the magnetic image detection device, multiple band-shaped superconducting bodies are provided in parallel on a nonmagnetic dielectric substrate, and electrodes are provided on both ends of the superconducting bodies so as to form pairs. A detection circuit detects resistance between the electrodes on both ends of the multiple superconducting bodies according to intensity of external magnetic field.

Abstract: An image recording device has an optical switch panel disposed nearly or directly in contact with a photosensitive body. The optical switch panel contains many liquid crystal display dot elements between a pair of boundary layers and serves to form on the photosensitive body an image which is displayed on the optical switch panel. The boundary layer on the side of the photosensitive body is significantly thinner than that distal therefrom.

Abstract: A documenting reading apparatus is comprised of a cylindrically shaped color filter with three filter elements having different colors. Both a light source and a cylindrical lens are disposed inside this cylindrical filter.

Abstract: A corona discharging unit comprises a control grid to which a diode is attached and a high voltage AC power is applied to its discharge line. A single unit of this design with a single power source, when used in an electrophotographic copying machine with a rotating photosensitive drum, can perform more than one of the functions required in a copying process such as preliminary charging of the drum, transferring images, discharging and cleaning.

Abstract: An electrophotographic recording apparatus which repeats the development of an electrostatic latent image corresponding to the original, which is formed once on an image supporting means, with a toner and the succeeding transfer of the resulting toner image to a transfer substance, thereby producing a number of copies of the original, wherein said recording apparatus comprises a transferring means having at least one corona charger connected to a high AC voltage source to repeatedly conduct transfer and discharge, regions in which said transfer and said discharge are carried out, respectively, being adjacent to each other.

Abstract: An automatic exposure adjusting device for use in a variable copying magnification type copying apparatus, which controls quantity of light of a light source by detecting photographic density of an original document by the use of a photo detector and includes a shielding plate formed with a slit aligned with an optical path for subjecting a photosensitive member to exposure. The photo detector is provided below and adjacent to the light source, while the shielding plate is provided below and adjacent to a copy face of the original document.

Abstract: An optical system adapted for a laser printer is characterized in that a laser generator provides a laser beam having a cross section of an ellipse whose longitudinal axis is defined by a surface of the laser generator for emitting the laser beam, a first lens receives and passes through the laser beam having the elliptic cross section toward a lower reflector, a second lens receives the laser beam having the elliptic cross section such that a laser element of the laser beam along with a direction orthogonal to the surface of the laser generator is incident upon a longitudinal side of the second lens and images the laser beam having a cross section of an approximate circle to a substantially focused spot at a surface of a light sensitive medium. The optical system is to focus the first lens by rotation with screws formed on a body tube. Preferably, the first lens comprises a focus lens of an axial symmetrical lens including a spherical lens and the second lens comprises a cylindrical lens.

Abstract: A flying spot scanning system adapted for a laser printer is characterized in that a laser generator provides a laser beam having a cross section of an ellipse whose longitudinal axis is defined by the surface of the laser generator emitting the laser beam, a first lens receives and passes through the laser beam having the elliptic cross section toward a laser reflector, a second lens receives the laser beam having the elliptic cross section from the laser reflector, the laser beam along a direction orthogonal to the surface of the laser generator being incident upon a longitudinal side of the second lens which modifies the laser beam to a cross section of an approximate circle to a substantially focused spot on the surface of a light sensitive medium. Preferably, the first lens comprises an axially symmetrical focus lens and the second lens comprises a cylindrical lens.

Abstract: A multi-pin record electrode assembly comprises two series of record electrodes formed on the same substrate and folded to form a zigzag pattern with respect to each other. The electrodes are formed on a flexible substrate having a fold line separating the substrate into two substrate portions. Each substrate portion has an electrode set and its associated leads formed thereon. The substrate is folded along the fold line to produce the record electrode assembly.

Abstract: A pair of high voltage switching circuits associated with first and second sources of voltage supply are connected with a pin-shaped record electrode through a resistor and an electrostatic induction plate, respectively. The electrostatic induction plate is disposed very closely adjacent the record electrode or its associated lead wires in a manner to establish an electrostatic capacitive coupling therebetween. A resistor, capacitor combination provides an integration circuit for current flow from the first source of voltage supply to the record electrode and also provides a differentiation circuit for current flow from the second voltage supply source to the record electrode. Voltages from the first and second sources are added together in an incremental fashion via the resistor-capacitor combination. The sum of the voltages which exceeds the threshold value of the voltage, i.e. the ignition voltage, is applied to the record electrode to produce a spontaneous gas discharge.