Abstract: An image filing system which uses, in addition to main document identification data in the form of a keyword assigned to a given document, auxiliary document identification data formulated to be representative of a characterizing portion of the image read from a given document, wherein the image data representative of the whole image read from the document is stored in one data storage area of a memory and the image data representative of the characterizing portion of the image is stored in another data storage area of the memory for use as the auxiliary document identification data. When the documents accessed as a result of the searching on the basis of a keyword or keywords, the auxiliary document identification data is displayed for each of the documents in addition to the keyword or keywords assigned to each of the documents listed on the display.

Abstract: Originals are fed onto a platen glass one by one by an automatic original feeder to be read out by a reading system. The originals are converted into digital image data. The image data is transferred to a memory unit. The memory unit is controlled by a CPU. The memory unit is configured of an image memory, a sentence direction recognizing portion, an RAM producing a management table, an original direction (top and bottom direction) recognizing portion, a rotation processing portion, a sign memory and the like. Based on top and bottom directions of original images and directions in which sentences run included in the images, arrangement of images in a 2in1 or 4in1 mode is determined.

Abstract: In an image processing apparatus, first peak density pixels of one dimension each having a peak density in one-dimension direction larger than a predetermined density are detected from image data located in a predetermined image area of a document image, and second peak density pixels of two dimensions each having peak densities in two-dimension directions larger than the predetermined density are detected from the image data. Further, there are counted a number of the detected first peak density pixels of one dimension and a number of the detected second peak density pixels of two dimensions, and then, it is judged whether or not the image data located in the predetermined image area are image data of a dot photograph image, a photograph image or a character image based on the counted numbers.

Abstract: An image processing apparatus determines an image data of a selected area to be an image such as of characters having no halftone or an image such as of a photograph having halftones. An image processing mode optimal to the image data of the selected area is assigned to this area as attribute data. Based on the attribute data, the image data of the selected area is processed in the optimal mode. Each of such area includes at least one pixel, and an overall result of image processing carried out in respective optimal modes is output.

Abstract: An image forming apparatus which includes an electrophotographic copying machine operable to form an image on a recording paper and a laser printer operable to form an image on a recording paper independently of the copying machine. The copying machine includes a paper feeder from which the recording papers are selectively supplied to an electrophotographic image forming station in the copying machine and to a paper supply unit in the laser printer. The image forming apparatus also includes a paper recirculating unit operable at a specific timing to replenish the recording paper, supplied from the paper feeder, onto the paper supply unit in the laser printer.

Abstract: An image reading apparatus includes an original placing platen formed of a rectangular transparent member on which an original is placed; a photoelectrical conversion device for reading an image of the original-placed on the transparent member; an original pressing plate having an original pressing surface for pressing the overall surface of the original placing platen, the original pressing surface having a first area formed at a portion opposing a first side of the transparent member and a second area formed at a portion opposing a second side crossing at a right angle to the first side of the transparent member. The first and second areas are determined as a predetermined color by the photoelectrical conversion device.

Abstract: There is disclosed a facsimile apparatus comprising plural keys arranged on an operation panel and a RAM for storing data of destinations and facsimile numbers thereof so as to correspond to respective keys. A network control unit of the facsimile apparatus dials through a communication line the facsimile number stored in the RAM corresponding to pressed one of the plural keys when one of the plural keys is pressed. Further, a printer section reads the data stored in the RAM, and prints the read data on a piece of paper or label in a format suitable for sticking it on an IC card or in the vicinity of each of the plural keys on the operation panel.

Abstract: An image reading apparatus having a high-contrast mode of operation for reading character images and a halftone mode of operation for reading halftone images, including an image sensor converting optical image information into electric signals, an optical system for projecting an image on a document onto the image sensor, a threshold signal generator capable of generating a plurality of first threshold signals and operative to output one of the first threshold signals, a threshold signal generator capable of generating a plurality of second threshold signals and operative to output one of the second threshold signals, a mode selector circuit for selecting the high-contrast or halftone mode of operation, a density selector circuit for selecting the first threshold signal during the high-contrast mode of operation and the second threshold signal during the halftone mode of operation, and a combination of circuit networks for outputting halftone image signals during the high-contrast mode of operation on the bas

Abstract: The improvement of a complex machine comprises a host computer, a duplicator, a laser printer, and a sheet supply unit. In a first sheet supply mode a sheet is supplied from the sheet supply unit to the duplicator; and in a second sheet supply mode a sheet is supplied from the sheet supply unit to the printer. The complex machine further comprises sheet transfer mode selecting means for selecting one of an interruption mode wherein the sheet supply mode currently set up is interrupted to proceed to a selected sheet supply mode, a wait mode wherein the selected sheet supply mode is effected after completing the process of the sheet supply mode currently set, and a rejection mode wherein proceeding to the selected sheet supply mode is rejected when either one of the first and second sheet supply modes is currently set up and the other one of the two sheet supply modes is selected concurrently.

Abstract: An image forming apparatus is provided with a host computer, a copier, and a printer operable in response to instructions from the host computer. Upon receipt of image information from the host computer, the printer forms an image on a first sheet whereas the copier forms on a second sheet an image of a document placed on a document platform. The apparatus is further provided with a document conveying device for conveying to the document platform the first sheet as a document on which the image has been formed by the printer. The apparatus has at least two drive modes: a single drive mode at which all the transcripts are prepared by sole use of the printer and a double drive mode at which the first sheet having the image formed by the printer is conveyed by the document conveying device so that the rest of transcripts are prepared by the copier.

Abstract: An image reader having blank document detection circuitry for detecting whether the document is blank or not, the detection circuitry comparing the data to a predetermined threshold value by picture elements, counting the number of the data over the predetermined threshold value, and detecting the blank document when the counted number does not exceed a preset number. The control circuitry can discontinue the later image reading operation in response to the detection of the blank document.

Abstract: An image forming apparatus for forming a color image in a plurality of colors including a plurality of image forming units which are different in image forming color from each other, a spatial frequency detector for detecting a spatial frequency relating to an image of a prescribed color for every portion of an image to be formed, and a control unit for controlling the image forming units to perform image formation by one of the image forming units in a portion belonging to that having a high spatial frequency within portions to be subjected to image formation in the prescribed color while performing image formation by overlapping a plurality of colors through at least two of the image forming units in a portion belonging to that having a low spatial frequency on the basis of a detection output from the spatial frequency detector. Method steps for improving image color reproducibility are also described.

Abstract: An image reading apparatus having a high-contrast mode of operation for reading character images and a halftone mode of operation for reading halftone images, including an image sensor converting optical image information into electric signals, an optical system for projecting an image on a document onto the image sensor, a threshold signal generator capable of generating a plurality of first threshold signals and operative to output one of the first threshold signals, a threshold signal generator capable of generating a plurality of second threshold signals and operative to output one of the second threshold signals, a mode selector circuit for selecting the high-contrast or halftone mode of operation, a density selector circuit for selecting the first threshold signal during the high-contrast mode of operation and the second threshold signal during the halftone mode of operation, and a combination of circuit networks for outputting halftone image signals during the high-contrast mode of operation on the bas

Abstract: An image forming apparatus which includes an exposing device for projecting light onto an original so as to form an electrostatic latent image of an original image on a photosensitive surface of a photoreceptor, a reading device for reading the original image through separation per predetermined color in a reading picture element unit, a designating device for designating the color to be erased, an erasing device for erasing desired region of the electrostatic latent image on the photosensitive surface of the photoreceptor per erasing picture element unit, a converting device for converting color data in the reading picture element unit into color data in the erasing picture element unit, a display device for displaying the region to be erased based on the color data in the erasing picture element unit, and a control device for controlling the erasing device based on the color data in the erasing picture element unit obtained through conversion of the color designated by the designating device, by the convert

Abstract: A microfilm reader scanner for projecting an image on a microfilm onto a screen and also reading it through an image sensor, subjecting it to an editing process such as trimming or masking and thereafter outputting it to a laser beam printer or the like. An image editing area is specified using a touch panel disposed on the screen, and the editing area and an attribute thereof are inputted to a memory while observing the image projected on the screen. The image on the microfilm is read by the image sensor, converted to a digital signal, edited in accordance with the image editing area and the attribute thereof both stored in the memory, and then outputted to a laser printer or the like.