摘要:
A device for developing an electrostatic latent image formed on a photosensitive member includes a developing sleeve which is driven to rotate in a predetermined direction and a pressure blade which is kept pressed against the sleeve to form a thin film of uniformly charged toner so as to apply for the latent image for development. In accordance with the present invention, the forward end portion of the pressure blade is specifically shaped such that a projection having the width which substantially corresponds to the width of an image forming area of the photosensitive member is provided to extend beyond a contact line between the sleeve and the blade thereby allowing to form the thin film of toner whose width substantially corresponds to the image forming area of the photosensitive member, thereby preventing the waste of toner from occurring.
摘要:
A developing device for developing an electrostatic latent image includes a tank for containing therein a quantity of developer, a developing sleeve driven to rotate in a predetermined direction and having an outer peripheral surface which defines a path for transporting the developer, a magnet roll disposed inside of the developing sleeve for keeping the developer attracted to the peripheral surface of the sleeve, and a pressure plate pressed against the sleeve to form a thin film of developer on the peripheral surface of the sleeve before being applied to the latent image.
摘要:
A dual-conductor type current-access magnetic bubble device comprises apertured conductors on which apertured magnetic sheets having the same configuration as the corresponding conductors are disposed, whereby magnetic poles are induced on each aperture of the magnetic sheets by the in-plane magnetic field generated by the current applied to the corresponding conductors to reduce the driving current required for bubble propagation, while stable regions are formed in the substrate by the magnetic poles induced by the bubbles at the boundaries of the apertures of the magnetic sheets at the time of service interruption. The device is further provided with a magnetic rail having side walls on which magnetic poles are induced by the stray flux of the bubbles in the substrate, thereby to have stable bubble-rest regions formed in the substrate at the time of service interruption by the magnetic poles induced on the walls.
摘要:
A toner image of an original document is formed on a photoconductive drum (1) and transferred onto a copy sheet (4) which is moved into contact with the drum (1) by a corona charging unit (5) which applies an electrostatic charge to the copy sheet (4) causing the toner image to be transferred thereto. The copy sheet (4) is separated from the drum (1) by a conductive belt (6). The belt (6) is initially grounded so that the leading edge of the copy sheet (4) is attracted thereto by induced electrostatic charge. A voltage of the same polarity as the transfer charge is then applied to the belt (6) to prevent transfer of the toner image back to the drum (1).
摘要:
An exposure unit radiates a light image of an original document onto a charged photoconductive member to form an electrostatic image through localized photoconduction. A developing unit applies a powdered developing substance comprising carrier particles and toner particles to the photoconductive member to develop the electrostatic image and produce a toner image which is transferred and fixed to a copy sheet to produce a permanent reproduction of the original document. Prior to exposure with the light image a reference electrostatic image is formed on the photoconductive member and the electrostatic potential thereof is measured. The intensity of the light image of the original document and/or a developing bias voltage are regulated in accordance with the sensed electrostatic potential. The reference image may be of a reference surface having a predetermined optical density or a portion of the original document produced by reverse optical scanning.
摘要:
A method of maintaining the correct conditions of an electrophotographically duplicated image, which uses a reference plate having at least a dark-tone area and a light-tone area and in which signals associated with the reference plate are detected and synthesized to control the duplicating process conditions such as developing bias potential, charge, exposure and of the optical system so that an optimum image may be produced.
摘要:
A composition comprising one or more kinds of macrotetrolide antibiotic substances represented by the following general formula: ##STR1## wherein R.sub.1, R.sub.2, R.sub.3 and R.sub.4 are lower alkyl groups, and a physiologically acceptable carrier is effective for preventing and treating swine dysentery.
摘要:
A composition and method for treating or preventing fowl coccidiosis, said composition comprising one or more of the macrotetrolide antibiotic substances represented by the general formula ##STR1## wherein R.sub.1, R.sub.2, R.sub.3 and R.sub.4 each represents methyl or ethyl group, and a physiologically acceptable carrier.
摘要:
A blowing agent is infiltrated into polystyrene resin particles dispersed in an aqueous suspension. Before or during infiltration, a flame retardant solution obtained by dissolving 33-1,000 parts by weight of a powdery flame retardant and 20-200 parts by weight of a flame retardant aid having a 1-hour half-life temperature of 100-250° C. in 100 parts by weight of a plasticizer is supplied to the aqueous suspension to infiltrate the flame retardant and the flame retardant aid into the particles, producing expandable polystyrene resin particles. By dissolving the flame retardant, which doesn't accumulate in the living body and has satisfactory handleability, in a plasticizer, the flame retardant can be evenly infiltrated into resin particles. Consequently, expansion of the expandable particles doesn't result in unevenness of cell density and the particles have excellent heat-fusibility to one another during molding, and molded foam having excellent flame retardancy and heat resistance can be obtained.
摘要:
In one embodiment, a magnetic head includes a sensor stack of thin films including a free layer; a hard bias structure comprising a first foundation layer, a second foundation layer formed on the first foundation layer and a hard bias layer formed above the second foundation layer, wherein portions of the first and second foundation layers positioned along a side wall of the sensor stack have a discrete island structure. Additional embodiments are also disclosed.