Abstract: A background pattern image combining apparatus for combining a background pattern image with an input image is provided. The background pattern image includes a plurality of first isolated points having a size that can be read by an image reader and a plurality of second isolated points having a size that cannot be read by the image reader. The background pattern image combining apparatus includes a detector that detects, in the input image, a specific area which is an area having a specific state, and a combining portion that combines the background pattern image with the input image by placing not the plurality of first isolated points but the plurality of second isolated points in the specific area, and, by placing the plurality of first isolated points and the plurality of second isolated points in an area other than the specific area.

Abstract: In an image forming apparatus, a line width detection unit detects a line width from attribute data inputted from an attribute data input unit, an edge detection unit detects an edge from image data inputted from an image data input unit, and an AND calculation unit calculates an AND of results of these detections. A coefficient storage unit stores a coefficient set for each line width. A line width correction coefficient multiplication unit acquires a correction coefficient corresponding to the detected line width with regard to an edge and the detected pixel and performs a multiplication to thereby correct the line width.

Abstract: A background pattern image combining apparatus for combining a background pattern image with an input image is provided. The background pattern image includes a plurality of first isolated points having a size that can be read by an image reader and a plurality of second isolated points having a size that cannot be read by the image reader. The background pattern image combining apparatus includes a detector that detects, in the input image, a specific area which is an area having a specific state, and a combining portion that combines the background pattern image with the input image by placing not the plurality of first isolated points but the plurality of second isolated points in the specific area, and, by placing the plurality of first isolated points and the plurality of second isolated points in an area other than the specific area.

Abstract: An image processing apparatus scans an image of a document to thereby create image data, and extracts specific code data from the created image data. If the specific code data is successfully extracted, pattern data corresponding to the specific code data is deleted from the created image data. Further, pattern data corresponding to the specific code data is embedded into the image data.

Abstract: In an image forming apparatus, a line width detection unit detects a line width from attribute data inputted from an attribute data input unit, an edge detection unit detects an edge from image data inputted from an image data input unit, and an AND calculation unit calculates an AND of results of these detections. A coefficient storage unit stores a coefficient set for each line width. A line width correction coefficient multiplication unit acquires a correction coefficient corresponding to the detected line width with regard to an edge and the detected pixel and performs a multiplication to thereby correct the line width.

Abstract: A multibeam scanning optical apparatus incluses a controller which specifies laser diodes which are emitting light normally and arranged in a continuous row, a memory having a plurality of area in which image data are stored, a write-in controller which causes image data for each line to be written into only areas of memory corresponding to the specified laser diodes when any of the laser diodes suffers a failure, a read-out controller which causes the image data for each line to be read out simultaneously from the areas of memory corresponding to the specified laser diodes and a driver which performs light emission control only with respect to the specified laser diodes.

Abstract: It is objected to provide an image processing apparatus achieving decrease of memory volume to be used, simplified print process, and enhancement of productivity. Firstly, a plurality of image data are recorded in memories provided for respective colors. Based on the image data or mode selection by a user, it is determined that whether a multi-color image or a monochrome image is to be outputted. Next, memories 302 of respective colors transmit image data of respective colors to a computing unit 304 in accordance with readout-timing signals from a timing selector 305. In case a multi-color image is to be outputted, the timing selector 305 transmits readout-timing signals of respective colors taking time difference length of which is predetermined for each color. In case a monochrome image is to be outputted, the timing selector 305 transmits readout-timing signals of respective color simultaneously.

Abstract: An image processing apparatus scans an image of a document to thereby create image data, and extracts specific code data from the created image data. If the specific code data is successfully extracted, pattern data corresponding to the specific code data is deleted from the created image data. Further, pattern data corresponding to the specific code data is embedded into the image data.

Abstract: 1,800 dpi binary image data is divided into 3-bit data groups or 2-bit data groups, and is input from an input unit 11 to a tone setting unit 12 and a print position controller 13. Each group of 3-bit image data is converted into 8-bit tone data and 2-bit attribute data by the tone setting unit 12 and the print position controller 13, respectively, and both sets of post-conversion data are input to a pulse width modulation unit 15 at the same time. Because all 3-bit data is handled at the same time, the input and output operation clock signals can stay the same as for a 600 dpi resolution.

Abstract: A two-beam scanning optical apparatus includes a first beam generating device, a second beam generating device, a judging unit which judges whether the second beam generating device is operating normally or not, a raster signal processing unit which outputs a raster signal each time if the judging unit judges that the second beam generating device is operable, and which outputs a raster signal every other time if the judging unit judges that the second beam generating device is not operable and a control unit which performs image formation by using the first beam generating device and the second beam generating device based on the raster signal output every other time, and which performs image formation by using only the first beam generating device based on the raster signal output each time.

Abstract: A multibeam scanning optical apparatus incluses a controller which specifies laser diodes which are emitting light normally and arranged in a continuous row, a memory having a plurality of area in which image data are stored, a write-in controller which causes image data for each line to be written into only areas of memory corresponding to the specified laser diodes when any of the laser diodes suffers a failure, a read-out controller which causes the image data for each line to be read out simultaneously from the areas of memory corresponding to the specified laser diodes and a driver which performs light emission control only with respect to the specified laser diodes.

Abstract: 1,800 dpi binary image data is divided into 3-bit data groups or 2-bit data groups, and is input from an input unit 11 to a tone setting unit 12 and a print position controller 13. Each group of 3-bit image data is converted into 8-bit tone data and 2-bit attribute data by the tone setting unit 12 and the print position controller 13, respectively, and both sets of post-conversion data are input to a pulse width modulation unit 15 at the same time. Because all 3-bit data is handled at the same time, the input and output operation clock signals can stay the same as for a 600 dpi resolution.

Abstract: It is objected to provide an image processing apparatus achieving decrease of memory volume to be used, simplified print process, and enhancement of productivity. Firstly, a plurality of image data are recorded in memories provided for respective colors. Based on the image data or mode selection by a user, it is determined that whether a multi-color image or a monochrome image is to be outputted. Next, memories 302 of respective colors transmit image data of respective colors to a computing unit 304 in accordance with readout-timing signals from a timing selector 305. In case a multi-color image is to be outputted, the timing selector 305 transmits readout-timing signals of respective colors taking time difference length of which is predetermined for each color. In case a monochrome image is to be outputted, the timing selector 305 transmits readout-timing signals of respective color simultaneously.

Abstract: In an image forming apparatus employing a multi-beam method, the total emission period of time is stored for each laser beam. In accordance with the total emission periods of the laser beams, the laser beam used for SOS is switched, so that the total emission periods are kept almost equal to each other. When the laser beam used for the SOS is switched, the adjustment processing for correcting misalignment of the laser beams in the main scanning direction is changed in accordance with the current laser beam used for the SOS, and the emitting order of the laser beams for the APC is also accordingly changed.

Abstract: A method and apparatus for correcting image parameters for each of several image forming apparatuses networked together are provided. In the present method and apparatus, one device, which can be one of the networked image forming apparatuses, operates as an image parameter correction apparatus. The image parameter correction apparatus reads in a prescribed image formed by each image forming apparatus, and calculates image parameter correction values for each image forming apparatus. The image parameter correction values for each image forming apparatus are calculated by comparing image parameters for the corresponding scanned prescribed image with reference image parameters. The image parameter correction values for each image forming apparatus are then transmitted to the corresponding image forming apparatus.

Abstract: A pneumatic yarn splicing apparatus comprising a yarn end untwisting means and a fluid jetting means for splicing lapped yarn ends by intertwining the yarn ends by the swirling air stream. X-figured guide groove comprising yarn end introducing grooves and yarn end untwisting grooves is formed on the nozzle block and a fluid jet nozzle for splicing the yarn ends is disposed at the intersecting portion of the guide groove.