Abstract: Methods and apparatus are provided for generating a color profile for a color output device including a plurality of colorants, the methods and apparatus printing a plurality of color patches on an output medium, measuring a spectral or colorimetric response for each of the printed patches and for the output medium, calculating spectral or colorimetric responses for overprint combinations of the colorants based on the measured spectral or colorimetric responses, calculating colorimetric values in a profiling target based on the calculated and measured responses, and providing the calculated colorimetric values to profiling software for generation of the color profile.

Abstract: When a photo album on an event such as wedding is generated, images to be inserted in image insertion areas in a template can be selected easily. A professional photographer photographs the bride and groom on the day of wedding, and obtains images. Characteristic quantities of scenes represented by the images are calculated, and the images are classified into image groups of the scenes. With reference to a reference-value sequence table describing reference values of the characteristic quantities of the scenes in the event in order of occurrence of the scenes, the image groups are arranged in order of the scene occurrence. A catalog of the images is generated in the same order, and displayed in an editing screen.

Abstract: An image forming apparatus includes: an image forming unit for forming a correcting image for correcting gradations of an output image, on a bearing body; a sensor for measuring reflected light quantity of the correcting image formed on the bearing body; a gradation correcting unit for correcting the gradations of the output image, based on a measurement result of the measured reflected light quantity of the correcting image; and a timing correcting unit for detecting a shift of measurement timing, based on the measurement result by the sensor, and for correcting the detected shift of the measurement timing.

Abstract: An optical scanning device 65 is adapted to bring a deflector mirror plane 651 into independent pivotal motions about a first axis and a second axis perpendicular to each other. A mirror driver section including a first axis driver and a second axis driver is so controlled as to bring the deflector mirror plane 651 into pivotal motion about the first axis thereby deflecting a light beam L for scanning along a main scan direction. On the other hand, the deflector mirror plane 651 is pivotally moved about the second axis thereby to adjust the scanned beam L for its position on a photosensitive member 2 with respect to a subscan direction. Thus, even if the scanned beam is deviated from a reference scan position with respect to the subscan direction due to component tolerances or assembly errors, such a deviation can be corrected.

Abstract: A method of rendering text in an image forming device comprises providing a user interface to receive a user-defined font sharpening threshold; receiving the user-defined font sharpening threshold entered by user via the user interface, selecting a halftone screen for text based on text size and a user defined font sharpening threshold; and rendering the text with the selected halftone screen.

Abstract: The present invention selects color materials for a virtual device from real color materials, adjusts a gray balance to obtain a predetermined black color at a maximum device value by using selected color materials, assigns a color material amount to each device value so that a relation between the device value and brightness becomes linear when outputting gray, and evaluates a color range reproducible by the virtual device with the assigned color material amount by an inclusion rate for a standard color group so as to start the process all over again from selection of the color materials if evaluation is poor. It thus obtains the color reproduction definition of the virtual device and performs the color conversion including gamut mapping using the color reproduction definition.

Abstract: On the basis of a standard one-dimensional LUT 412, a plurality of one-dimensional LUTs 413 having mutually different tones are generated. Next, a plurality of monochrome sample images are generated using this one-dimensional LUTs 413, and a catalog print in which these monochrome sample images are arranged is printed out. Once the user has selected from the catalog print a sample image having the desired tone, a monochrome image is printed out using the one-dimensional LUT 413 that corresponds to the sample image.

Abstract: A method for enhancing an image includes generating a luminance histogram for the image; generating a derivative histogram by taking a first derivative of the luminance histogram; searching for a plurality of black peaks and searching for a plurality of white peaks using the derivative histogram; and performing luminance scaling of the image between one black peak of the plurality of black peaks and one white peak of the plurality of white peaks.

Abstract: A method for minimizing color-image halftone dot-gain in the output of a multi-level halftone color-imaging output device. The method includes characterizing that device's halftone output, on a per-color basis, regarding pixel-pattern-specific dot gain which can be related to device pixel-infeed intensity levels, and from that characterizing, creating, and then applying to throughput color-image files, on a pixel-by-pixel basis, and for each output color producible by the device, a pixel-to-device infeed intensity correction value, thus to minimize device-output dot gain.

Abstract: A printer receives a multimedia document as input and creates two documents as output: a paper version of the multimedia document and a “mapping” file that maps marks on the physical pages onto actions. The mapping table is supplied to an application associated with a pen-capture device that can be attached to the paper version of the multimedia document and used to receive the marks applied to the paper.

Abstract: A method for determining if an image to be printed is subject to reload artifact, includes providing an image (which may be a low resolution version of the image) to be printed; locating within the image a first area to be printed requiring toner of sufficient quantity to cause reload of the donor roll; locating within the image a second area substantially one rotation of the donor roll subsequent to the first area; determining if the second region is a region of high area toner coverage, wherein high area toner coverage comprises toner coverage exceeding a predetermined threshold value; if the second region is a region of high area toner coverage, determining if the second region contains high frequency content; if the second region contains high frequency content, the second region is not subject to reload artifact; else the second region is subject to reload artifact.

Abstract: A print control apparatus, method and system that acquire a first band area for storing band data of a predetermined size according to band information for processing by a printer device. Print commands are divided into each band in which a printer device processes, and stored into the first band area in band units. If the print commands corresponding to a particular band cannot be stored in the first band area, a memory area for storing the print command is acquired as a second band area, the print commands stored in the first and second band areas are linked, and the linked print commands are transmitted to the printer device.

Abstract: A document display method includes a determination step of determining, in a case that a display magnification of document data to be displayed is reduced, whether or not the display magnification of the document data is equal to or greater than a predetermined display magnification, and an applying step of applying smoothing processing to image data of the document data if it is determined that the display magnification of the document data is equal to or greater than the predetermined display magnification, and not applying the smoothing processing to the image data of the document data if it is determined that the display magnification of the document data is less than the predetermined display magnification. In addition, a display step displays the image data to which the smoothing processing has been applied in the applying step or the image data to which the smoothing processing has not been applied.

Abstract: A method and apparatus for generating a multicolor image using halftone screens employs a dot structure dot growth pattern for one or more of the colors and a line structure dot growth pattern for at least two or more of the other colors.

Abstract: In a system and method for maintenance of a printing or copying system, at least two system computers are provided comprising a central device control computer and a raster process computer. A print data network connection is provided for incoming print data or copy data to be rastered. A print data network connection is provided for incoming print data or copy data to be rastered. At least one of the system computers is designed as a service connection computer. A maintenance computer is connected to a maintenance data connection on the service connection computer. Control programs are loaded from the maintenance computer onto the service connection computer via a network connection.

Abstract: A method of generating a second bit map, improved in first-direction resolution, from a first bit map having a plurality of image-forming pixels arranged two-dimensionally, the method comprising a first detection step of detecting first and second edges appearing in a second direction orthogonal to a first direction in a first bit map, and the first addition step of adding at least an edge extending in the first direction, when a portion between the first and second edges permits interpolation, to between third and fourth edges on the second bit map respectively corresponding to the first and second edges so as to effect interpolation between the third and fourth edges. Since the first and second edges, if detected, permit smoothing, a look-up table is not needed, and even a long-range unevenness can be smoothed without a smoothing range being limited to a predetermined region.

Abstract: A color conversion relation derivation method derives a color conversion relation between a first color space and a second color space. This method comprises an area-forming step that forms a plurality of areas filling the first color space; a partial function derivation step that derives, for each of the areas formed in the area forming step, a partial function representative of a color conversion between coordinates in the area and coordinates of the second color space using a set of an arbitrary sample point provided in the first color space and a point in the second color space, which is associated with the sample point; and a whole function derivation step that combines the partial functions for the respective areas derived by the partial function derivation step to derive a whole function representative of the color conversion relation through the first color space in its entirety.

Abstract: An image forming apparatus illuminates a pixel formation member with optical energy according to image data specifying a value for each pixel in the image. Some of the optical energy emitted to form a pixel is distributed over surrounding pixels; similarly, a pixel may receive peripheral optical energy that was emitted to form surrounding pixels. The amount of peripheral optical energy thus received is calculated, and the amount of optical energy emitted to form the pixel is adjusted to compensate for the peripheral optical energy, so that the total optical energy received by the pixel has the intended value. Image irregularities are thereby avoided, even if the image formation apparatus employs multiple light-emitting elements with different energy emission distributions.

Abstract: A color reduction processing apparatus and method reduce an original image containing many colors to a printable image containing few colors according to human color sensation. A conversion processing unit converts the pixel data for each pixel in an RGB color image (original image) to HLS data. A color reduction processor then generates print image data (the reduced-color image) reduced to a first color, second color, and a non-printing color by calculating the hue H, lightness L, and saturation S values of the HLS data based on specific parameters. These parameters can be set from an operating screen presented on a display. The original image and reduced-color image are presented on the display for verification by the user.

Abstract: A mobile phone includes an elongate body defining a transverse print media path along which print media can be fed. A storage device is provided in which an image to be printed can be stored. A printhead and ink supply module is contained within the body and includes an elongate printhead integrated circuit (IC) which extends transverse to the path. The printhead IC is configured to print the stored image upon the print media. A feed mechanism is located within the body and is configured to feed the print media along the path during printing of the captured image.