Abstract: An original is placed on an original support of an original-reading apparatus. A reflecting original is exposed to a first light source. A light conductive original is exposed to a second light source. The light image reflected from the reflecting original and the light image passing through the light conductive original are read optoelectrically by a reading device which outputs image signals representative of the light images. The positions of reflecting original and the light conductive original are detected by a detecting device which outputs position detection signals. A control device controls the original-reading operation of the reading device in accordance with the position detection signal.

Abstract: An image processing system characterized by recognizing a document area and binarizing an image data read from a document based on an image data read from the recognized document area.

Abstract: An image processing system characterized by recognizing a document area and binarizing an image data read from a document based on an image data read from the recognized document area.

Abstract: An image processing apparatus has a CCD sensor for reading an original image, comparators and latches for detecting maximum and minimum levels of the image signal from the CCD sensor, a coordinate detector for detecting coordinate positions on the original, and a CPU with a memory for determining a slice level and, quantizing the image signal in accordance with an algorithm stored in the memory.

Abstract: The invention relates to a power supply system for an electronic device. The power supply system converts an A.C. power supply voltage into first and second D.C. power supply voltages. The system comprises two power supply units and a control unit. The control unit is actuated by a supply voltage from the first of the two power supply units and the control unit operates in conjunction with the power supply units.

Abstract: An area designation apparatus includes an input unit for inputting coordinates of an area for image processing and a controller for determining an area on the basis of the coordinates input by the input unit. The input unit has a first input method for inputting two diagonal points of a rectangular and/or square area, and a second input method for inputting coordinates of at least three corners of a polygonal area. The controller automatically determines that the input coordinates by the input unit are entered in accordance with the first or second input method.

Abstract: An image reproduction apparatus capable of dividing the image of a designated area into plural areas and reproducing thus divided image on plural recording sheets, thereby allowing one to obtain a large copy when these sheets are pasted together.

Abstract: An image signal processing apparatus has an optical system including an image sensor, a comparator for comparing the density level of a current line with that of a previous line as a predicted value, a CPU for determining a threshold level in a different mode in accordance with the result obtained by the comparator, and another comparator for comparing the current image signal with the threshold value from the CPU to produce a binary encoded signal. The apparatus properly discriminates background and information portions of an original image and performs binary encoding of image signals in real time without requiring a large-capacity memory.

Abstract: A computer D.C. power supply comprises an AC-DC converter for converting alternating-current power from an external A.C. power source to direct-current power. A rectifier is connected to the A.C. power source to supply a D.C. voltage to a first light-emitting diode to cause it to emit light to a phototransistor, which is connected in the AC-DC converter for activating it in response to that light. A photo-thyristor is also connected to the rectifier and is optically coupled with a second light-emitting diode for establishing a low-impedance path across the first light-emitting diode in response to light from the second light-emitting diode. A switching circuit, connected to the output terminals of the AC-DC converter, is responsive to a shutdown command signal applied from a computer for activating the second light-emitting diode to cause light to be emitted therefrom to the photo-thyristor.

Abstract: An image processing apparatus includes input means for inputting data for a plurality of image areas, selection means for selecting desired ones of the image areas, and output means for outputting the selected image area under a predetermined condition.

Abstract: An image processing apparatus has a CCD sensor for reading an original image, a means for setting a processing mode suitable for each original image, a detecting means for detecting the state of the original image, and a processing means for processing the image signal read by the sensor in accordance with the set processing mode and the detected image state.

Abstract: An image processing apparatus includes an image generator, a processor for trimming an image generated by the image generator and a reproducer for outputting a plurality of printouts of different images by repeating the trimming by the processor without manually entering trimming data.

Abstract: An image processing apparatus capable of detecting (1) the size or position of the original on the table, and/or (2) the size or position of an information portion of the original. The apparatus includes an original supporting table for supporting an original. The original has an information portion and a non-information portion. Reading apparatus is provided for reading an area of the table including the original placed on the table, and for generating image data corresponding to the read area and the read original. First detector circuitry is included for detecting the position or size of the original on the table based on the image data from the reading apparatus. Second detector circuitry is included for detecting the position or the size of the information portion of the original based on the image data from the reading apparatus.

Abstract: An image forming apparatus includes an original size input section for inputting an original size, a sheet size input section for inputting a sheet size, a variable magnification input section for inputting an arbitrary variable magnification, a selection section for selecting a variable magnification determination mode on the basis of a size relationship between the original size and the sheet size, a first display section for displaying the variable magnification input by the variable magnification input section, a second display section for preforming a mode display indicating that the variable magnification determination mode is selected, and a control section for controlling the first and second display sections. In this apparatus, the control section can simultaneously execute the display of the input variable magnification by the first display section and the mode display be the second display section.

Abstract: A console section in an image processing apparatus such as a copier, facsimile or the like. has: an image processing unit; a starting unit for starting processing by the image processing unit; a unit for selecting the process steps of the image processing unit; and a display for flickeringly displaying that the process steps are being selected and that starting by the starting unit is not permitted while the process steps are being selected by the selecting unit. This display can display the kind of process step which is selected. At least the copy quantity and variable magnifications in the main-scan and sub-scan directions of an original which are inputted by ten-keys can be switched and displayed by the display.

Abstract: The disclosed automatic focusing device measures distances by repeatly illuminating an object to the photographed with an auxiliary light. Upon detection of an in-focus state, either the auxiliary light illumination is inhibited or the auxiliary light driving cycle is made longer than the cycle used in a de-focus condition, so that the waste of electric energy is minimized.

Abstract: An image processing system comprises means for detecting the position of an original, means for judging the tilt, the bending and the presence of the original and means for giving a warning or controlling any useless processing operation, thereby desirably editing and printing out the original without wasting copy papers, toner, time, power and the like.

Abstract: An image processing system has readers for reading original images, a multi-input/multi-output unit, and printers with or without sorters. Image signals from one or more readers are output by printers selected by the multi-input/multi-output unit in accordance with the number of copies to be produced and the copy mode selected by the operator. High-speed copy operation can be performed by using available printers in the multi/single copy mode and/or sort/non-sort/group mode without requiring complex operation by the operator.

Abstract: There is described an image processing system in which the image signals from a reader unit is transmitted to plural image forming units for reproducing plural images simultaneously, through a signal transmitting unit. The signal transmitting unit has a function of synchronizing each image forming unit independently, in order to avoid the total failure or retarded operation caused by a failure in synchronization of one of the plural image forming units.

Abstract: An apparatus for flash photography being of the type in which for one shot a number of different flash tubes are time-serially fired and the amount of flash light emitted from each flash tube is controlled in accordance with a respective arbitrarily chosen individual value independently of the others.In the above-described arrangement, one and the same comparator is sufficient for controlling the firing operation of all the flash tubes, thereby giving an advantage of simplifying the construction of the apparatus.