Abstract: A method and apparatus for transmitting code data of a multi-color subject copy from a transmitter to a receiver in a manner that minimizes the volume of code data. The form of the data is determined by the capabilities of the receiver. The original images consist of at least two colors in addition to the background color of the copy sheet. A transmitter scans each line of the copy sheet to develop scan signals corresponding to the original images. The scan signals are used to prepare sets of run length code data and color discrimination code data indicative of the colors which appear in each line of the subject copy sheet. The transmitter transmits color discrimination code data and the corresponding set of run length code data to a receiver adapted to reproduce the transmitted data. The method of combining the scan signals to create the transmitted image signals and color discrimination code produce a condensed data strength.

Abstract: The present disclosed invention includes a telephone set provided with a facsimile function. The telephone set includes an image reader which can be mounted on and detached from its body. The reader can be detached and operated to scan an original with an image to be transmitted thereon. A read-out image data signal is modulated in frequency and then transmitted toward a receiving portion in the body through a transmitting portion in the reader. The received image data are transmitted to another desired facsimile terminal equipment through a telephone line. Since there is no need for an electric wire to be connected between the body and the reader, a more flexible reading of an image can be achieved.

Abstract: Disclosed is an image data transmission apparatus which includes an image reading unit for reading the original image, and a transmission apparatus main body. The main body includes a memory for storing the image data read by the image reading unit and transmits the content of the memory. The image reading unit is detachably mounted on the transmission apparatus main body. The transmission apparatus main body is further provided with a conveying device for conveying the original in a state in which the image reading unit is mounted on the transmission apparatus main body to thereby read the original. The image reading unit may also scan the original to read an original image, in a state in which the image reading unit is dismounted from the transmission apparatus main body. Further, a sheet element made of a material of a low coefficient of friction, as opposed to the original, may be disposed at a position corresponding to the mounted state of the image reading unit on the transmission apparatus main body.

Abstract: An optical image reading apparatus for photoelectrically reading images formed in at least two colors on a surface of an original having a base color different from the at least two colors, including a first reading device for obtaining a first image signal for each of a multiplicity of reading spots in a predetermined area on the original. The first image signal has two different levels one of which corresponds to the base color and the other of which corresponds to the at least two colors. The apparatus further includes a second reading device for obtaining a second image signal for the each reading spot. The second image signal cooperates with the first image signal to discriminate each of the at least two colors from the other of the at least two colors. Provisions are made for determining whether the levels of the first image signals for all of the multiplicity of reading spots are equal to the above-indicated one level corresponding to the base color, or not.

Abstract: Disclosed is an image data transmission apparatus which includes an image reading unit for reading the original image, and a transmission apparatus main body. The main body includes a memory for storing the image data read by the image reading unit and transmits the content of the memory. The image reading unit is detachably mounted on the transmission apparatus main body. The transmission apparatus main body is further provided with a conveying device for conveying the original in a state in which the image reading unit is mounted on the transmission apparatus main body to thereby read the original. The image reading unit may also scan the original to read an original image, in a state in which the image reading unit is dismounted from the transmission apparatus main body. Further, a sheet element made of a material of a low coefficient of friction, as opposed to the original, may be disposed at a position corresponding to the mounted state of the image reading unit on the transmission apparataus main body.

Abstract: A photosensor including a fiber substrate having a light receiving window formed in a surface thereof spaced from an information surface to be read, a bundle of optical fibers disposed in the fiber substrate and positioned in the light receiving window. A plurality of color filters of different characteristics are disposed on an end face of the bundle of optical fibers, and a plurality of arrays of photosensitive elements corresponding to the color filters are also provided. The arrays of photosensitive elements are integrally provided with the fiber substrate and disposed in the region of the end face of the bundle of the optical fibers farthest away from the information surface.