Abstract: When a data control portion receives a request for change of a pixel density, a cycle used as a reference cycle for detecting abnormality in a laser beam is changed corresponding to the pixel density. While a rotating speed of a polygon mirror for changing the density of picture element is not constant, emission of the laser beam is forbidden and detection as to abnormality in the laser beam is not effected. A mark for detection of an image density is formed on a photoreceptor where the laser beam is scanned, and outside an area where the image is to be formed. The formation of the detection mark is forbidden while the pixel density is being changed. On the other hand, when the detection mark is being formed, output of an instruction for changing the pixel density is deferred. In addition, emission of the laser beam is forbidden while the pixel density is being changed.

Abstract: A method and apparatus for providing platen mapping for known clearance pen movement in a graphics plotter system having a platen over which paper is moved longitudinally to create one axis, penholding apparatus moved transversely across the platen and the paper to create the other axis, and a controlled raising and lowering mechanism connected to the penholding apparatus for lowering a pen being held therein into contact with, for raising it from contact with the paper, and for providing a relative vertical position value signal. Vertical sensing apparatus is connected to the penholding apparatus for sensing the top surface of the platen. First logic is operably connected to the vertical sensing appartus and to receive the vertical position value signal from the controlled raising and lowering mechanism for calculating and saving a plurality of deviation values indicating the distance deviation of the platen top surface from parallel at a plurality of spaced points across the platen.

Abstract: An ink jet priming system for an ink jet printer having a reservoir containing ink for ink jets connected thereto and a reservoir opening for receiving ink is described. The ink jet priming system is provided with a seal for selectively closing the reservoir opening. Pressurized air is supplied to the reservoir from a tank connected thereto through an opening in the seal. The flow of air to the reservoir is controlled so that there is an initial low pressure air flow to force ink into the jets followed by a high pressure flow to force the discharge of the streaming discharge of the ink. A gutter assembly, connected to a disposable waste container is provided for receiving and collecting the ink discharged during the priming process. The ink jet priming system can be used with a moving print head that contains two or more separate reservoirs each with a separate reservoir opening.

Abstract: An optical disk is provided which comprises two sheets of substrates; or two sheets of substrate and a reinforcing plate or a reinforcing rim; or one sheet of substrate and a reinforcing plate; which are bonded to form an integrated body having a spacer interposed therebetween, said spacer being made of elastomeric foam having a specific gravity of not more than 1.5 and an expansion ratio of not less than 1.5 as the material of the said spacer. This optical disk has a high adaptability of the drive and exhibits a high reliability, i.e. excellent vibration restricting performance, thereby being possible to provide a stable and highly accurate information processing.

Abstract: A method of preparing a dry transfer sheet for transferring indicia such as characters and designs to a receiving surface of a receiving member. The transfer sheet is prepared by thermal printing of the desired indicia on a thermal printer, by using a heat-sensitive ink ribbon which has an ink layer consisting of a thermally fusible ink composition. The printer has a print head for heating selected portions of the ink layer. The ink ribbon and the carrier sheet are set on the printer, such that the ink ribbon is interposed between the print head and the carrier sheet.

Abstract: A nickel-plated metal terminal to be spot welded has a contact part plated with nickel and a spot welding part to be spot welded to a metal part not plated with nickel thereby improving the weld characteristic of the spot welded terminal.

Abstract: A heat-generating resistor having a functional thin film comprising an amorphous material containing halogen atoms in a matrix of carbon atoms formed on a substrate.

Abstract: A solid ink delivery system for supplying sticks of solid ink to a ink jet printer is disclosed. The solid ink delivery system includes a delivery assembly for each color ink stick supplied to the printer. Each delivery assembly includes a tube assembly where the ink sticks are stacked prior to their delivery to the printer. A triggerable ink stick feed assembly is provided for normally holding the in sticks in place. When triggered, the ink stick feed assembly releases the bottommost ink stick or sticks to an opening in the printer adapted to receive them, and restricts the movement of the above stacked ink sticks. The solid ink delivery system is adapted for use with a moving print head having a number of reservoir openings each adapted to receive ink sticks of a different color. A positioning means aligns the print head so the reservoir openings are under the tube assemblies that supply them with the appropriate color ink.

Abstract: An ink-jet printing apparatus comprises a thermal printing head having heating elements, and a film nozzle member having a plurality of holes for holding an ink and a plurality of connecting grooves for connecting same of the plurality of holes, said plurality of connecting grooves being formed in a surface thereof opposing the heating elements of the thermal printing head. While the heating elements are selectively heated, bubbles are formed in the heated ink filled in the plurality of holes in the film nozzle member as it passes over the heating elements, said bubbles being formed adjacently to the heating elements, and the ink ejected from the plurality of holes by the pressure created by the bubbles is attached to a printing member conveyed near the film nozzle member in the vicinity of the thermal printing head, thereby performing printing.

Abstract: A recording apparatus adapted to accommodate first and second recording sheets rolled into rolls, selectively convey one of the first and second recording sheets to a recording section having a recording head, and record an image in accordance with image information on the selected recording sheet. The apparatus is capable of initializing the positions of the leading ends of the recording sheets in such a manner that they are positioned at a predetermined stand-by position. The apparatus may be adapted to display a message requesting the initialization after a cover over the recording sheets has been closed. Alternatively, the apparatus may have sensors for detecting the recording sheets and may be adapted to perform the initialization on the basis of the outputs of the sensors by cutting portions of the recording sheets at the leading ends thereof alternately.

Abstract: A polyamic acid is synthesized by the ring-opening poly-addition reaction using a biphenyl tetracarboxylic acid as a tetracarboxylic acid moiety and an aromatic diamine, particularly p-phenylene diamine, as a diamine moiety. An aromatic polyimide resin layer possessing a highly desirable heat-resisting property as a heat-resistant insulating coating material and excelling in adhesive strength relative to a substrate is obtained by adjusting the polyamic acid in viscosity with a suitable organic solvent, applying the resultant polyamic acid on a substrate, and firing the applied layer of the polyamic acid. The substrate, for example, is a conductor layer formed as with copper and used as a multi-layer wiring board for hybrid IC's.

Abstract: A space heating element having a ceramic body, an electrically conductive ceramic glaze provided on the side of the ceramic shaped body opposite the visible side, and a nonconductive ceramic glaze provided over the electrically conductive glaze. The electrically resistive glaze has nonmetallic electrically conductive particles embedded in a carrier substance. The nonconductive glaze has the same carrier substance as the electrically conductive glaze but has kaolin particles embedded therein in place of the nonmetallic electrically conductive particles. The ceramic body, electrically resistive glaze and nonconductive ceramic glaze are heated to a temperature below the quartz transition temperature.

Abstract: Electronic switch comprising an operating means (1;7;12;15;18) movable in the switch. The operating means has only one magnetic pole operative for its motion, said pole being arranged to coact without contact with at least one second magnetic pole of a second magnet (5;5a) placed in the switch.

Abstract: A control circuit for a laser printer is described which utilizes a laser switching amplifier for supplying current to a laser diode, the latter being modulated by means of image signals. The control circuit has a correction circuit which compensates for the turn-on delay time of the laser diode. Preferably, the correction circuit lengthens the incoming image signal which controls the laser diode by a correction time which substantially corresponds to the time that elapses between when current is supplied to the laser diode and when the laser diode delivers its light, thereby eliminating distortion of the final image.

Abstract: A manual or handy type copying apparatus including an image reading section for reading an image of an original document to be copied, and a printing section for printing the image read by the image reading section onto a transfer material, and arranged to subject the printing section to manual scanning during the printing operation or work, with the printing portion held in contact with the transfer material, and characterized in that there are provided spring members adapted to support the printing portion in a floating state so that the printing portion contacts the transfer material under a constant pressure during the printing operation.

Abstract: A tactile sensor device, of value in a sensor system for identifying an object by contact, in the form of a first array of parallel elongated lengths of electroconductive material, a second array of parallel elongated lengths of electroconductive material, disposed transverse to the first array so that lengths in the two arrays intersect, and a resilient piezoresistive material disposed in continuous contact with the lengths of electroconductive material in one of the arrays and located between the arrays.

Abstract: The potentiometer consists of two halves. Each half has a base plate (5,6) ending in soldering lugs (51,61,62). One part each of a casing (1 or 2) and a rotary driver half (3 or 4, respectively) are molded to each base plate in a plastics injection molding process. The two potentiometer halves are interconnected at their casing parts (1,2), on the one hand, and at their rotary driver halves (3,4), on the other hand, by ultrasonic welding. For this purpose a circumferential thickening (15,47) each is provided of tapering shape. A slider spring (8) on the one hand has slider lobes (81) which slide on a resistor path of a resistor plate (7) and, on the other hand, slider lobes (80) which slide on the base plate (5) opposite the resistor plate (7). Hereby the central or potentiometer tapping is effected electrically at this base plate (5) and the soldering lug (51) connected to the same.

Abstract: A printing apparatus for use in a printer with a photo-sensitive drum. The printing apparatus includes a spotlight source for generating a light provides essentially a point source. A photo-optical converter which is optically coupled to the spotlight source converts the light from the spotlight source to linear rays of light. A plurality of microshutters optically coupled to the photo-optical converter selectively transmits the light at selected portions of the array to the photo-sensitive drum. As a result, a light path is defined from the spot-light source through the photo-optical converter and the microshutters to the photo-sensitive drum.

Abstract: The present invention relates to a stationary contact for a low-voltage circuit breaker constituted by a contact holder element having a shaped slot and by a contact element fastened to the contact holder nearby the slot in order to generally improve the features of a low-voltage circuit breaker.

Abstract: A computerized composing system includes a color transfer unit for selectively coloring portions of the printed output. Initially the operator places an original piece of artwork on an optical scanning digitizer. The digitized image is stored in a computer and displayed on a monitor screen or may be created, on screen, by the operator employing various features of the system software. Letters and numbers are then added to the display screen through a computer keyboard. A mouse or the keyboard can be used to edit the graphic and alphanumeric information on the composition until it is satisfactory to the operator. Therefore, what the operator see on the screen is what the operator gets as a printed result. The composition is then transmitted to a laser printer. A color transfer unit integrated into the printer permits color to be transferred to the toner on the paper stock. A solenoid activated roller forces a web of transfer foil against the printed stock.