摘要:
An electrophotographic copying apparatus comprises a photoconductive drum, a charger for electrically charging the drum, an exposure unit for exposing the drum to form a latent image on the drum which correspond to the pattern of a document, a developer unit for developing the latent image, using one-component toner, a transfer unit for transferring a toner image to a paper sheet and a fixer unit for fixing the toner image.In copying the document pattern, a document density-copy density characteristic, i.e. .gamma. characteristic, is set in accordance with the document density. According to the .gamma. characteristic the amount of exposure and the bias voltage to be applied on the developer unit are varied.
摘要:
When a monochromatic copy mode is to be executed, a control section sets a read mode in a scanner section so as to enable the scanner section to read an image at high speed by means of only a line sensor K, sets in an image processing section an image process that can print monochromatic image information, which is sent from the scanner section, with a single black color in the printer section, and sets in the printer section a monochromatic print mode that can print a black image at high speed, thereby controlling a monochromatic copy operation.
摘要:
A nonvolatile-memory controlling method is disclosed which continuously accesses a plurality of memory banks structured so as to have each memory bank accessible independently. The method comprises the steps of: in a busy cycle of one of the plurality of memory banks being accessed, issuing access information to a second memory bank for access thereto; bringing the second memory bank into a selected state while the access information is being issued to the second memory bank using a selection signal for controlling a selected state and an unselected state for any one of the plurality of memory banks; bringing the memory bank in the busy cycle into an unselected state while the access information is being issued; and accessing the plurality of memory banks continuously based on the access information issued to the second memory bank in the busy cycle of one of the memory banks being accessed and in keeping with the selection signal for controlling the second memory bank.
摘要:
An image forming apparatus according to an embodiment of the invention reads an original by mechanically moving an axial light source in a subscanning direction perpendicular to the axis. The image forming apparatus includes: a sensor whose resolution in a main scanning direction parallel to the axis of the axial light source is higher than a designated resolution; a controller that controls the driving speed of the axial light source so that the resolution in the subscanning direction is higher than the designated resolution; an original-image-data generating unit that generates original image data with a resolution higher than the designated resolution in response to the output from the sensor; and an image reducing unit that generates reduced pixels fewer than a specified number of pixels in the original image data to generate a reduced image with a resolution equal to the designated resolution.
摘要:
A printing apparatus which prints the dot-matrix characters or dot-matrix graphic patterns on a paper sheet one page at a time by scanning a photosensitive drum with a modulated laser beam in accordance with the recording data externally supplied and by transferring an image on the drum onto the paper sheet. This printing apparatus comprises page memory for storing the dot-matrix image according to the recording data, margin table for storing the margin data of the respective sizes of the paper sheets and a controller for incorporating the margin data into the dot-matrix image read from the page memory and for supplying the incorporated image to the laser scanning unit for modulating the laser beam.
摘要:
When a monochromatic copy mode is to be executed, a control section sets a read mode in a scanner section so as to enable the scanner section to read an image at high speed by means of only a line sensor K, sets in an image processing section an image process that can print monochromatic image information, which is sent from the scanner section, with a single black color in the printer section, and sets in the printer section a monochromatic print mode that can print a black image at high speed, thereby controlling a monochromatic copy operation.
摘要:
When a monochromatic copy mode is to be executed, a control section sets a read mode in a scanner section so as to enable the scanner section to read an image at high speed by means of only a line sensor K, sets in an image processing section an image process that can print monochromatic image information, which is sent from the scanner section, with a single black color in the printer section, and sets in the printer section a monochromatic print mode that can print a black image at high speed, thereby controlling a monochromatic copy operation.
摘要:
An optical scanning unit receives beams from a plurality of beam light sources and directs the respective beams as a plurality of scanning beams with respect to the predetermined scanning range of the object to be scanned. A deflector receives one of the plurality of scanning beams by the optical scanning unit at a position near an end portion of the predetermined scanning range of the object to be scanned and deflects the received beam in a predetermined direction. A single beam detector detects the single scanning beam deflected in the predetermined direction by the deflector. A sync signal generating unit generates a sync signal on the basis of a detection output from the single beam detector. A control unit selectively generates control signals for driving the plurality of beam light sources in accordance with the sync signal from the sync signal generating unit, and while the single beam detector detects the single scanning beam, for driving only one of the plurality of beam light sources corresponding to the single scanning beam.
摘要:
A plurality of light sources generate beams having predetermined light amounts, respectively. An optical scanner receives the beams from the plurality of light sources and directs the beams as a plurality of scanning beams to an object to be scanned. A photodetector has a predetermined number of photosensors smaller than that of the plurality of light sources and substantially detects light amounts of the plurality of scanning beams by the optical scanner in a time sharing manner. A controller outputs a control signal for independently controlling the light amounts of the respective beams from the plurality of light sources in accordance with time-sharing light amount detection signals corresponding to the plurality of scanning beams from the photosensors of the predetermined number.
摘要:
A recording apparatus which is for filling recording ink in a film with numerous minute orifices and heating the ink rapidly with heating elements to spurt the ink from the orifices by means of the pressure of bubbles generated in heating to record data on a member to be recorded by use a source voltage from outside. The present recording apparatus comprises main switch for controlling the ON/OFF of the source voltage; sensor for detecting the ON/OFF state of said main switch; members for housing the film in a state of tight sealing; drive unit for variably controlling the motion of the film; sensor for detecting that the film is housed in said film housing member; a main power supply for supplying an operating power to at least said film motion drive unit by receiving the source voltage; and relay for shutting off the supply of the source voltage to said main power supply only when a detection signal is supplied from said film housing sensor. The film motion drive unit controls to transport a predetermined portion of the film into said film housing members according to the OFF state detection signal from the ON/OFF state sensor.