Abstract: With facsimile apparatuses wherein color image data is coded, a facsimile on a calling side codes image data by replacing the image data with a codeword indicative of a white run-length or a black run-length, represents color information by combining specific codewords among the codewords and represents image data including color image only by codewords by combining the coded image data and the color information. A facsimile on a called side receives transmitted image data, determines color information represented by a combination of specific codewords among the codewords in the received image data, and outputs image data as specific color image when the color image is determined.

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: An image processing apparatus includes a copying machine and a central processing apparatus provided with a facsimile function. When originals are distributed to a plurality of destinations, a destination list is stored in the central processing apparatus in advance. At this time, as to the destinations to which originals are transmitted through the facsimile, telephone numbers thereof are simultaneously stored. The central processing apparatus controls the copying machine and the facsimile function on the basis of the stored data, so that originals are sent by the facsimile to places to which they should be sent by the facsimile, and also copied originals are sent to places to which they should, respectively.

Abstract: An image processing apparatus includes a copying machine and a central processing apparatus provided with a facsimile function. When originals are distributed to a plurality of destinations, a destination list is stored in the central processing apparatus in advance. At this time, as to the destinations to which originals are transmitted through the facsimile, telephone numbers thereof are simultaneously stored. The central processing apparatus controls the copying machine and the facsimile function on the basis of the stored data, so that originals are sent by the facsimile to places to which they should be sent by the facsimile, and also copied originals are sent to places to which they should, respectively.

Abstract: In the electronic sort of a digital copying machine, image data of a document consisting of a plurality of sheets are read and compressed to bi-level data in a memory. The compressed image data are recovered to multi-level data successively. When a plurality of copies of the document are produced, the recovery action is repeated by the number of the copies. In a facsimile machine combined with a digital copying machine, bi-level image data for the automatic reduction transmission are recovered first to multi-level image data, and the density of the multi-level image data is changed for the reduction. Then, the multi-level data are converted to bi-level data for facsimile transmission. In a digital two-color copying machine, multi-level image data of the second color of the two colors to be recorded later has to be synchronized to those of the other in correspondence to the delay of the recording time between the two colors.

Abstract: The facsimile machine according to the invention can set a so-called night time collective time designation mode for power saving during night time processing time. Turning on a prescribed operation key of the facsimile machine permits printing. More specifically, even when the machine is in the power saving state, a printing operation is permitted in response to a key input.

Abstract: In a facsimile apparatus, a receiver receives image data transmitted from a transmission apparatus apart from the facsimile apparatus, and a converter converts binary image data representing an image density of each pixel in binary representation of black pixel or white pixel, into multi-value image data representing an image density of each pixel in multi-gradation stages representation including half-tone density. Further, the receiver receives a discrimination signal transmitted from the transmission apparatus.

Abstract: A facsimile transmission method according to the present invention is a facsimile transmission method of transferring a color image from a sending station to a receiving station through a communication line; the method including the steps of: reading an image of a colored original, generating a plurality of image data corresponding to predetermined color components respectively, and storing the image data in a memory at the sending station before calling up the receiving station; calling up the receiving station and determining a color printing ability of the receiving station; and sending appropriate image data from the sending station to the receiving station in accordance with the color printing ability of the receiving station.

Abstract: In a facsimile apparatus, image data receiver receives compressed image data transmitted from a transmission apparatus apart from the facsimile apparatus. A first expanding section expands the received image data using a first expanding method, and a second expanding section expands the received image data using a different second expanding method. A data converter converts white and black binary image data into multi-value image data in multi-gradation stages representation, and a judging section judges whether the received image data are binary image data or multi-value image data.

Abstract: Data filing system for filing documents in a data file memory as image data is disclosed. The data filing system includes means for registering each document size in the data file memory together with image data, an output means for outputting an image of a designated document, an input means for designating an output size of the designated document and means for warning when the designated output size is different from the registered document size.

Abstract: This invention for reading an image of a document employs a optical projection magnification lens for projecting the image of a document; a movable image reading device for transforming the projected image into electrical signals and for providing a focussing adjustment; an electrical magnification process for varying electrically the size of the image projected on the image reading device; and a controller for controlling the optical projection lens, the electrical magnification process, and the movable reading device.

Abstract: An optical image reader having the capacity to vary magnification both electrically and optically is provided. Operator controls permit variable magnification of image signals to a desired level. An optical sensor can be independently moved for focusing.

Abstract: An image filing system in which additional document identification data is used in addition to main document identification data for the identification of an image-bearing document and is formulated typically on the basis of a predetermined relationship detected between the number of times which a given document has been searched for and the number of times which the document has been used for printing purposes so that the main document identification data assigned to the document and used for the searching of the document is deemed inappropriate depending on the resultant count numbers for displaying and printing whereupon a message to that effect is issued to prompt the operator of the system to change the keyword.

Abstract: A scan apparatus, comprising: a platen on which a document can be placed; a criterion member on which at least one black zone and at least one white zone are formed successively in the subscan direction, criterion member being arranged near the platen on the side from which a subscan is started; a device for detecting a linear optical image of the document to obtain the density distribution of the linear optical image; a device for scanning the criterion member and a document in the subscan direction which includes a device that illuminates a document placed on a document area of the platen and the criterion member; and a device for determining a reference timing for starting a scan of the document on the platen, which is connected to the device that detects a linear optical image so as to detect a boundary between the black and white regions and determine the reference timing from the boundary detected.

Abstract: A run length encoder for compressing binary image data including black and white picture elements of opposite logic levels is disclosed. The encoder provides means for calculating black to white data ratio regarding image data to be compressed and means for reversing each of the logic levels of the binary image data from one to another before encoding them if black data is predominant.

Abstract: An image reader for reading an image on a document having apparatus for projecting an image of the document optically to permit optical magnification. An image reading device transforms the projected optical image into electrical signals which can be transformed into bi-level signals with the picture element density of the bi-level signals varied. Apparatus is provided for designating picture element density and for controlling the optical magnification in accordance with the designated picture element density.

Abstract: An image reader which has a criterion member arranged at the upstream side of a platen with respect to the subscan direction and controls a scanner so as to scan the criterion member and subsequent thereto the document. The criterion member is used to determine a reference edge from which the image reading of the document should be started.

Abstract: An image editing apparatus including an image display for displaying an image on a cathode-ray tube wherein a source area of the original is designated as is a destination area so that a partial image of the source area can be transferred to the destination area while information regarding the designation area and destination area are displayed on the CRT. Thus, the magnification and relative position of the image after editing can be readily appreciated by referring to the display on the CRT.

Abstract: A method of image processing for sampling the concentration of each portion of an image in the unit of a picture element and for binarizing the concentrations of picture elements in the unit of a submatrix of predetermined size to obtain a bi-level image, being characterized in that the bi-level image is obtained from the concentrations having been sampled according to the steps as follows: (a) calculating the average of the concentrations of the picture elements at every submatrix to which the picture elements belong; (b) determining the number of elements in the submatrix to be treated as either one of black and white according to a predetermined relation with the average; (c) assigning elements in the submatrix as the elements to be treated as either one of black and white up to the number determined in the step (b) in the predetermined order of the concentration of each element.

Abstract: An apparatus for reading an image of a document, comprising: (1) an optical projection apparatus for projecting an image of a document; (2) an image reading section for transforming the projected image into electrical image signals; (3) a first variable magnification section for varying optically the size of the image to be projected on the image reading means; (4) a second variable magnification section for varying electrically the size of the image projected on the image reading section by transforming the electrical image signals received from the image reading section into other electrical image signals which correspond to a size of image different from the original size; and (5) a variable magnification control section for controlling the first and second variable magnification circuit so as to give image signals having a magnification designated.