摘要:
The present invention is made to reduce the effect of variation of pulses for driving a printer when recording image data and to improve the gray level representation of picture images to be printed. Data incoming through an image reading device are quantized and processed two pixels at a time by a gray level image processing circuit. The two-pixels' data are first discriminated by an edge discriminator to determine whether they represent an edge portion within the image or not. An object image, on which an operation for inter-pixel spacing shall be conducted, is selected according to the discrimination result. The arithmetic and logic portion performs the above-mentioned operation by two pixels at a time if the data correspond to a non-edge portion and performs correction for enhancement if the data correspond to an edge. This may eliminate the effect of dot displacement due to variation of drive pulses of a printer and improve the quality, in particular, of a gray level image portion.
摘要:
A timing control device for a driving mechanism including a clutch or a solenoid has a sensor which operates a fixed time interval after the mechanism is driven in response to a drive signal and a timer which measures the time interval between when this drive signal is given and when the sensor operates. This measured time interval is compared with a reference value and the timing of providing the drive signal is adjusted according to the result of this comparison.
摘要:
Within an electrophotographic copying machine having a predetermined number of sensing elements each deriving an output indicative of respective one of operating states of the machine, there is provided a single chip, MOS-LSI microprocessor responsive to the outputs of the sensing elements to control the machine in a sequential or serial mode. The microprocessor contains storage means storing a string of instructions, processing means to fetch sequentially the instructions from the storage means and to deal with the fetched instructions, first input means to receive synchronizing signals generated within the body of the machine, first output means to determine with aid of the processing means whether any synchronizing signal is inputted via the first input means and to produce confirmation signals after confirming the sensed operating states of the machine, second input means to introduce through the sensing elements the confirmation signals supplied via the first output means, and a second output means to process with aid of the processing means the signals received by the first input means and the second input means and to consequently produce control signals effective to control operation of the machine.
摘要:
An X-ray image pickup tube converts a transmitted X-ray image into electric signals. The pickup tube includes a target structure having a fluorescent element, and a translucent conductive film for receiving a high voltage, with a photoconductive film laminated thereupon. The fluorescent element receives transmitted X rays in a two-dimensional distribution, and converts them into visible rays in a two-dimensional distribution. The translucnet conductive film is optically coupled to a surface of the fluorescent element opposite from an X-ray incident surface thereof. The photoconductive film includes an amorphors semiconductor layer which converts the visible rays transmitted in a two-dimensional distribution through the translucent conductive film, into electric charges in a two-dimensional distribution, and which multiplies the electric charges in the two-dimensional distribution based on electric fields formed by the high voltage applied to the translucent conductive film. The pickup tube also has a signal reading device in the form of an electron gun or switching elements for scanning a surface of the photoconductive film, as electric signals, a two-dimensional electric potential distribution occurring on the photoconductive film.
摘要:
A multiple-unit type copying apparatus having an apparatus housing divided into a plurality of units including an optical system unit in which an optical system and a driving device are incorporated and which is openably provided so as to be opened about its one end portion relative to the remaining units. The copying apparatus further includes a connector for coupling the driving device with a power source circuit, a coupling detecting device for detecting a coupling state of the connector and a power supply cut-off device for cutting off power supply to the remaining units when it has been found by the coupling detecting device that the connector is in an uncoupled state.
摘要:
An improved copying apparatus for copying by shifting images by a desired distance, and also for copying the central portion of a copy paper sheet according to copying factors such as the copy paper sheet sizes, original document sizes and copying magnifications.
摘要:
An electric element breakdown detector includes an electric element (5: 5a: 106: 132: 172) connected in series with a switching element (6: 6a: 116: 116a: 171) which define a series connection. A processing circuit (40: 110: 174) produces a control signal to the switching element to control on and off operation of the switching element, so as to control the current flow through the series connection. A comparator (10: 119) is provided for comparing a voltage at one end of the electric element with a reference voltage produced from a reference voltage producer (12: 121, 123), and generates a result signal representing the result of the comparison. The result signal is fed to the processing circuit. The processing circuit detects the condition of the series connection by the detection of combination of the control signal and the result signal.
摘要:
An electrophotographic copying machine comprises a body for accommodating a number of elements to execute a copying operation, a subsystem such as a sorter for sorting a plurality of copied papers in the copied order on each of shelves, and an optical communication system between the body of the copying machine and the sorter. For the optical communication system, the sorter includes some light emitting diodes while the copying machine includes some light receiving elements. In place of optical communication, magnetic communication may be provided.
摘要:
A digital image forming apparatus includes a CCD optical unit and an information editing section. The CCD optical unit inputs image information to an image control unit (ICU) upon an instruction to start image formation input through an operation panel. The information editing section inputs the image information to the ICU upon an instruction to start image formation input by a keyboard. The ICU stores the image information input from the information editing section page by page depending on an image processing mode specified through the operation panel and the keyboard, and successively performs image processing on the stored image information page by gage. With this arrangement, various image editing functions of a digital copying machine is effectively used for image information input from the information editing section.
摘要:
A photoconductive target having a transparent electrode layer and a photoconductive layer on a transparent substrate is disposed opposite to a group of integrated electron beam emitters having gate electrodes. A number of the electron emitters are activated to apply electron beams to the photoconductive target and the activated ones of the electron beam emitters are temporally changed over by an electron emitter selector circuit and a gate selector circuit. Signal charge generated and stored in the photoconductive layer is read. A time-series electric signal corresponding to a spatial distribution of the incident light is generated. A thin imaging apparatus suitable for a larger area is thus provided.