摘要:
A single-layer binder comprising a synthetic resin binder and a phthalocyanine pigment dispersed therein is modified so as to reduce the content of the phthalocyanine pigment while maintaining or further improving the sensitivity of the binder. A coating material comprising a synthetic resin binder comprising as a constituent component a polyester resin containing halogen atoms, e.g., chlorine or bromine, and a phthalocyanine pigment dispersed in the binder is applied to a conductive base to produce an electrophotographic binder.
摘要:
A control circuit for heat fixing device for use in an image forming apparatus is disclosed. The control circuit comprises device for detecting a power source voltage, device for detecting zero-crossing points of the power source voltage, device for determining frequency of the source voltage from the detected zero-crossing points, device for determining a power supplying time based on the detected power supply voltage and the power source frequency, device for controlling the power supply to a load based on the determined power supply line, in such a manner that a given power is automatically applied to the load against the change or fluctuation of the power supply source.
摘要:
An electrographic printing apparatus capable of duplex printing comprises a housing, a source of copy material and an output tray for receiving such copy material after it is imprinted, and a photoconductive member for storing a latent electrostatic image of the information to be imprinted. The printer/copier has first and second paper paths located near the top of the housing so that access to the paper may be achieved from the top of the housing. A photoconductive member is located below the first paper path and comes into contact with a first side of the paper from below in a transfer zone located in the first paper path to imprint the first side of the paper. The second paper path is operative to receive paper after it has passed through the transfer zone and information has been transferred to the first side of the paper. As the paper travels along the second paper path, it is turned over and then returned to the first paper path prior to the transfer zone so that the second side of the paper is imprinted from below by the photoconductive member. The invention also encompasses a duplexing unit which is attachable as a module to the body of an electrographic printer to convert it from a simplex printer to a duplex printer.
摘要:
A data processing system wherein one of a number of central processing units writes a command for data transfer to it from a second processor over a data bus to a common memory and a digital code to an interrupt table, the code indicating interruption of the second processor. Decoding apparatus responsive to the digital code causes the second central processor to read the command for data transfer from the memory and transfer data to the first central processor.
摘要:
An ink jet recording apparatus which effects nonimpact recording by the application of a jet of ink to a recording medium while the amount of ink to be jetted towards the recording medium is controlled to render it proportional to the recording velocity. For this purpose, the ink jet recording apparatus is provided with a feed-back loop system through which an electrical signal indicative of the pressure acting on the ink within an ink tank is fed back to a comparator to control operation of a compressed air source from which the pressure is applied to compensate for reduction in static pressure of the ink within the ink tank resulting from consumption of the ink. For maintaining the amount of the ink jetted proportional to the recording velocity, various arrangements are disclosed.
摘要:
An electrographic printing apparatus is capable of functioning as a copier, printer, and telefax machine, and is also capable of duplex printing. The electrographic printing apparatus includes a photoconductive member in the form of a disposable cassette which is mounted at an angle in the housing. The apparatus include an optical print head which can receive information from a local or remote source to form an electrostatic latent image on the photoconductive member and thus act as a printer. The apparatus also includes a device for scanning and digitizing an original document. When the digitized image is transmitted to the optical print head, a copy of the original document is produced. When the digitized image is transmitted over the telephone lines to a remote receiver, the apparatus functions as a telefax machine. The electrographic printing apparatus also includes a first paper path along which a sheet of paper travels and is imprinted on one side by the photoconductive member, and a second paper path which receives the sheet of paper from the first paper path, turns the paper over, and returns it to the first paper path for imprinting on a second side. A paper tray with sidewalls is also provided. The paper tray acts as an alignment correction system before a sheet of paper being duplex printed is imprinted on its second side. Alternatively, the paper tray can serve as a second source of paper for introducing paper into the apparatus.
摘要:
A cleaner unit is disclosed with a rubbery elastic cleaning blade. The blade extends horizontally from an upright base member, where the cleaning edge contacts a vertically downward passing photoconductive surface such that toner scraped from the surface travels over the upper face of the blade without causing a toner cloud. The removed toner is guided over this upper surface of the cleaning blade through the use of seals along the cleaning blade edge and outside the image carrying area of the photoconductive surface, as well as through the use of toner guiding grooves between the end seals.
摘要:
An electrographic printing apparatus comprises a photoconductive member surrounded by a charging unit, an optical print head, a developing unit, a transfer unit, a cleaning unit, and an erasing unit arranged in sequence about the photoconductive member. Paper travels along a planar path across the top of the photoconductive member and the developed image is transferred to the underside of the paper. In a preferred embodiment, the photoconductive member comprises a vertically mounted photoconductive belt. By providing a separate and independent cleaning unit, the electrographic printing apparatus is capable of producing one sheet of copy material per revolution of the belt.
摘要:
Disclosed herein is a character generating device of a raster scan system which comprises a region data storage means for storing display region data predetermined with respect to each of the character codes and a region counter which is set by the display region data. The region data storage means and the region counter are correlated with each other, whereby the dot output is counted by the region counter for generating a signal to output the next character when the count value reaches a set region datum value.
摘要:
An image information output apparatus which includes a circuit for setting conditions for a "0" or a "1" level in an X direction, a circuit for setting conditions for a "0" or a "1" level in a Y direction with respect to each of respective image units over an entire output image plane divided into an X-Y matrix configuration, a circuit for generating an output timing signal for each of the image units, an AND circuit for ANDing two signals so as to output conditional signals at every generation of the output timing signal for each of the image units, one conditional signal being related to the X direction condition setting and one conditional signal related to the Y direction condition setting, a circuit for storing image information, and a circuit for outputting the stored image information, one image unit by one image unit, for each "1" level output signal of the AND circuit.