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:
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 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.
摘要:
An improved image reading apparatus which is so arranged that, by providing marks shaded to a predetermined density or darkness for setting a required reading area on an image reading surface, the start mark and end mark are detected by a solid state image sensor for supplying image signals within the required reading range into memory unit based on results of the on detection so as to reduce the memory capacity of the memory unit.
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:
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:
A magnetic brush developing device for use in a copying machine or a printing device includes a developing roller forming a magnetic brush, a developer housing, a developer tank outside the developer housing, a scraper for removing developer from the developing roller after it passes through the developing area on the developing roller, a first carrying device in the developer housing arranged opposite to the developing roller along its entire length for carrying the developer from one end to the other end of the developing roller, for supplying developer to the developing roller during the carrying operation, and for discharging the excess developer into a developer tank, a second carrying device in the developer housing arranged parallel to the first carrying device and communicating at one end of the first carrying device for carrying the developer received from the developer tank in a direction opposite to the carrying direction of the first carrying device, for recovering the developer scraped from the developing roller by the scraper, and for supplying developer to the first developer, a third carrying device for supplying the developer accommodated in the developer tank to the second carrying device, and an adjustable height regulating plate provided in a side wall of the developer housing for regulating the height of developer in the developer housing.
摘要:
A cleaning apparatus for removing residual toner from a rotatable charge image retentive member, such as a photoconductive belt or drum, consists of an elastic cleaning blade on an elastic support. The elastic cleaning blade includes a resilient leg and an elastically deformable cleaning edge which projects outward from the leg and toward the image retentive member. The elastic cleaning blade is supported at a downstream position relative to the rotational direction of the image retentive member. The resilient leg is caused to curve away from the image retentive member while maintaining the cleaning edge in contact with the image retentive member as it rotates.