Abstract: A color image sensor has a plurality of sensor parts aligned in line and the sensor parts are a plurality of sensor chips with filters of a plurality of colors and arranged in line. In this sensor, one of the sensor parts which corresponds to one of the plurality of colors and which influences resolution only to a small extent is omitted at a junction between adjacent ones of the sensor chips. Alternatively, in this sensor, sensor parts with a plurality of filters having a relatively high transmittance, among the filters of the plurality of colors, are alternately arranged to constitute a first sensor row, and sensor parts with filters having a relatively low transmittance are arranged in line to constitute a second row. The second row is parallel to the first row. Each sensor part constituting the second row is larger than that constituting first row.

Abstract: A recorder has a beam generator for generating a beam to form a dot image on a record medium. The beam generator has first and second beam generation sources to generate first and second beams and forms each dot by using both of the first and second beams.

Abstract: An enlarged image of an original image is reproduced by enlarge-processing image data of divisional areas of the original image and sequentially printing out the image data.

Abstract: There is disclosed an image processing apparatus capable of rotation or size change of an image, without lack of pixel data after image processing. For this purpose a destination address is calculated from a source signal, then source addresses are determined corresponding to the vicinity of the thus calculated destination address, and data values for such vicinity area are determined from the source data corresponding to such source addresses.

Abstract: An image data conversion system has a RAM for storing a data conversion table, a CPU for calculating the data conversion table by parameters received from a ROM, input devices for supplying new parameters when the table content must be changed, and data selectors. Desired image data conversion, such as gamma correction, masking, etc., can be performed, and conversion characteristics can be easily confirmed.

Abstract: An image processing apparatus comprises an input device for inputting an image data, a first converter circuit for converting the input image signal to an analog image output and a second converter circuit for converting the input image data to a digital image output. The first converter circuit controls the analog image output in accordance with the output of the second converter circuit. The second converter circuit produces different digital signals in accordance with the input image data and has a threshold matrix to be compared with the input image data.

Abstract: A color image processing apparatus has a CCD shift register for reading a color image in accordance with reference clock pulses, a pre-sample-hold circuit for performing color separation of serial color signals and producing parallel color signal in accordance with sample clock pulses, post-sample-hold circuits, and a matrix circuit for correcting the color signals. The CCD shift register, the pre-sample-hold circuit and the post-sample-hold circuits can be integrated as a line sensor. Serial color signals can be processed at high speed and at low cost.

Abstract: An image processing apparatus includes a generator for generating predetermined image data representing an image and an image reproducing device for reproducing the image. A reading device reads the image reproduced by the reproducing device and generates read data representative thereof. A converter converts the read data generated by the reading device to converted image data which is substantially equal to the predetermined image data generated by the generating device. The converting means includes a table adapted to receive the read data as address data for converting and outputting the converted image data. The converted image data may be transmitted to the reproducing device which is arranged to reproduce an image represented by either the predetermined image data or the converted image data. The image processing apparatus of the present invention may also incorporate a digitizer having a dither processing circuit for specifically processing data in accordance with a plurality of kinds of basic cells.

Abstract: A color image processing apparatus comprising an input unit which receives a plurality of color component signals in parallel. A color correction device receives the plurality of color component signals and a signals representing the kind of a corrected color signal and outputs a selected kind of corrected color signal in order to sequentially obtain different corrected color signals for respective colors from the plurality of color component signals. A color image forming device forms respective color images sequentially using the corrected color signals output from the color correction device.

Abstract: Data processing apparatus include an input device that has a single signal line. The input device inputs a data signal and a discrimination signal through the signal line with the data signal having one of a plurality of data formats in each of which a plurality of kinds of data are arranged during respectively different periods of the data signal. The discrimination signal represents the one of the formats in which the data signal is arranged. A discriminator, connected to the single signal line, is responsive to the discrimination signal to discriminate the format of the data signal input by the input device. A separation circuit is responsive to the discrimination by the discriminator to respectively separate the plurality of kinds of data from the data signal in accordance with the format of the data signal. The different kinds of data carried by the data signal may include different color component data.

Abstract: An image processing apparatus has a memory for storing codes representing types of input image data and a comparator for selecting one of a number of threshold patterns in accordance with the code and comparing the input data with the selected threshold pattern to produce an image signal.

Abstract: A color image recording apparatus records color images on a recording medium and includes a plurality of image forming media and respective devices for forming respective images each of a different color on each of the image forming media. Transfer apparatus are provided for transferring the images respectively formed on the media onto a recording medium which is conveyed past the image forming media and the transfer apparatus by a recording medium conveyor. A detector generates a position signal that indicates that the recording medium is at a predetermined position on a predetermined path upstream of the first image forming medium, the image on which is to be first transferred to the recording medium.

Abstract: An image processing apparatus has an input section for converting input image information into a luminance signal, a memory to store the digitized luminance signal, a central processing unit for determining the matrix size for each picture element of the input image information so as to allow output of high space frequency components of input image information with matrices of small size and low space frequency components with matrices of large size, an outline emphasis circuit for emphasizing the outline when the image information is output with matrices of large size, and an output section for recording or displaying the input image information. Halftone images of excellent resolution and gradation can be output with a small memory capacity.

Abstract: There is disclosed a laser beam printer for high-speed printing, in which an image is formed by superposing plural images formed on plural image members by means of plural lasers controlled by a common deflector.

Abstract: This specification discloses an original reading apparatus for converting information such as pictures an writings on an original surface into electrical signals for reading. The apparatus comprises a carriage for moving an original in a predetermined direction, an illuminating system for illuminating a narrow line on the original perpendicular to the direction of movement of the original, a photoelectric sensor including a plurality of photoelectric elements arrayed in the direction of the illuminated line and over the width of the original, and means for reading the signals provided on each photoelectric conversion surface in the fashion of time series. In the apparatus, the illuminating system and the photoelectric sensor are made integral to form a compact head, and the head can scan the original while being in intimate contact with the original to thereby produce information signals of high resolution.

Abstract: An image processing apparatus such as a laser beam printer or an ink jet printer can reproduce halftone images with a high resolution and a high gradation. Four subelements of an 8.times.8 matrix picture element which correspond to low gray levels are further divided into small regions. Threshold levels 1 to 4 are set in these regions of each of the divided subelements, respectively. The density of a black dot corresponding to the subelement is changed by pulse width modulation or the like. The reproduced dot pattern has a substantially constant dot pitch.

Abstract: An image recording apparatus capable of arbitrarily setting a screen angle for recording a screen dot image is disclosed. The apparatus is constructed with an image signal output device; a level signal output device to produce a plurality of output level signals as a group, and to change the sequence of output of said group of signals; a quantized signal generator to generate quantized signals in accordance with the image signals and the level signals; and image recording signal generator to generate image recording signals for image recording by an output from the quantized signal generator.

Abstract: An apparatus for processing an image having half-tone and composed of plural pixels by dividing each of said pixels into small sections arranged in a matrix and respectively constituting micro-pixels with luminosity that can be respectively designated according to a determined gradation, by representing the luminosity to be designated to each of the first-mentioned pixels by the luminosity in the form of systematic dither method for the plural micro-pixels in said pixel.

Abstract: This specification discloses an original reading apparatus for converting information such as pictures and writings on an original surface into electrical signals for reading. The apparatus comprises a carriage for moving an original in a predetermined direction, an illuminating system for illuminating a narrow line on the original perpendicular to the direction of movement of the original, a photoelectric sensor including a plurality of photoelectric elements arrayed in the direction of the illuminated line and over the width of the original, and means for reading the signals provided on each photoelectric conversion surface in the fashion of time series. In the apparatus, the illuminating system and the photoelectric sensor are made integral to form a compact head, and the head can scan the original while being in intimate contact with the original to thereby produce information signals of high resolution.

Abstract: An image signal processing unit is disclosed which comprises: a contour extraction processing circuit for extracting a contour part from an input image signal, a color signal conversion processing circuit for replacing color signals of the contour part with contour emphasizing color signals on the basis of an output signal from said contour extraction processing circuit, and an image conversion processing circuit for producing a contour emphasized image signal from the input image signal and an output signal from said color signal conversion processing circuit. The image signals input to the image signal processing unit are converted to image signals suitable for display or printing.