Abstract: An image forming apparatus comprises an image data generating unit configured to convert a tone of an input value which indicates a density of a pixel by using a predetermined dither matrix and generate image data. The image forming apparatus further comprises a drive source and a gear configured to transmit a drive force from the drive source to an image carrier. The dither matrix includes a plurality of sub-matrixes arranged in a predetermined rule and a dot in each of the plurality of the sub-matrixes grows from a corresponding original point. The image forming apparatus satisfies a relation of (1) a?0.08 mm and b/a<0.80, or (2) a<0.08 mm and b/a>1.

Abstract: A color conversion device includes a profile storage unit, a saturation determining unit, a first selecting unit, and a conversion unit. The profile storage unit stores a plurality of profiles, each profile indicating correspondence relationships between input color signals representing values in an input color space defined in an input-side device and output color signals representing values in an output color space defined in an output-side device. The saturation determining unit is configured to determine a saturation of pixel data in input image data, the input image data being represented by input color signals and including a plurality of regions, each region containing at least one set of pixel data. The first selecting unit is configured to select, for each region, one profile among the plurality of profiles as an active profile based on the saturation of the at least one set of pixel data that is contained in the each region.

Abstract: An inkjet printer includes an inkjet head, a wave guide, an electromagnetic-wave supplier, and a detector. The inkjet head is configured to eject an ink onto a surface of a recording medium. The recording medium onto which the ink has been ejected is to pass through the wave guide. The electromagnetic-wave supplier is configured to supply electromagnetic waves into the wave guide. The detector is configured to detect a parameter relating to a dryness of the recording medium which has passed through the wave guide. The controller is configured to control the electromagnetic-wave supplier to control an intensity of the electromagnetic waves according to the parameter relating to the dryness of the recording medium.

Abstract: An inkjet printer includes an inkjet head, an electromagnetic-wave supplier, a wave guide, and a ventilator. The inkjet head is configured to eject ink onto a surface of a medium. The electromagnetic-wave supplier is configured to generate electromagnetic waves. The wave guide has an internal space into which the medium is to be fed. The wave guide is connected to the electromagnetic-wave supplier to apply the electromagnetic waves to the medium. The ventilator is configured to flow a gas in the internal space of the wave guide.

Abstract: An inkjet printer includes a plurality of guide walls and a plurality of choke portions. Each of the plurality of guide walls is arranged substantially in parallel with a feeding direction of a medium to provide a guide wall clearance between the plurality of guide walls. The wave guide has a first internal space connected to the guide wall clearance and an electromagnetic-wave supplier and configured to apply the electromagnetic wave to the medium which is introduced into the first internal space. Each of the plurality of choke portions includes a second internal space adjacent to each guide wall and an opening from the second internal space to the guide wall clearance. The second internal space is connected to the first internal space via the guide wall clearance. The second internal space has a length of ?/4 relative to wavelength ? of the electromagnetic wave in the feeding direction.

Abstract: A color-conversion-table creating method includes (a) defining a color gamut in a first color space defined for a first device, the color gamut having a surface, an internal space surrounded by the surface, surface grid points positioned on the surface, and internal grid points positioned in the internal space, and determining a correspondence relationship between the surface grid points in the first color space and parameters in a second color space defined for a second device, (b) determining, based on the correspondence relationship determined in step (a), a correspondence relationship between the internal grid points in the first color space and parameters in the second color space, and (c) creating a color conversion table indicative of a correspondence relationship between all grid points in the first color space and parameters in the second color space based on both the correspondence relationship determined in step (a) and the correspondence relationship determined in step (b).

Abstract: An inkjet printer using solvent ink containing an organic solvent and a colorant. The inkjet printer includes an inkjet head configured to eject the solvent ink to a medium, and a microwave irradiation unit configured to irradiate the medium, to which the solvent ink was ejected, with microwaves.

Abstract: A calibration system includes a plurality of printers, a grouping unit, a printer-selecting unit, a corrections data acquiring unit, a group determining units, and a print-data creating unit. A set of condition data is set for each printer. The grouping unit allocates each printer into either one of at least one group, based on the set of condition data for each printer. The printer-selecting unit selects, for each group, a printer among at least one printer belonging to the each group. The correction data acquiring unit acquires, for each group, one set of correction data created by the selected printer. The group determining unit determines one group, to which one of the printers that is desired to perform printing belongs. The print-data creating unit creates a set of print data based on the set of correction data corresponding to the determined group.

Abstract: An image recording apparatus includes an inputting unit, a half-tone processing unit, a printing unit, a correction-value storing unit, and a dot-position correcting unit. The inputting unit inputs image information on an image. The half-tone processing unit performs, based on the image information, a half-tone process for setting a plurality of dots to be printed on a recording medium. The printing unit prints the plurality of dots on the recording medium. The correction-value storing unit stores a set of correction values for correcting positions of the plurality of dots on the recording medium. The set of correction values includes at least one correction value that is provided for each of the positions of the plurality of dots. The dot-position correcting unit corrects the positions of the plurality of dots based on the set of correction values, thereby obtaining output positions for printing the plurality of dots on the recording medium.

Abstract: A calibration data creating device includes a reference measured density memory, a dither data memory, a corresponding set density determining unit, a calibration data creating unit, and a calibration data creating unit. The reference measured density memory stores measured densities of reference density patches that are formed by an image-forming unit based on the reference density patch data. The dither data memory stores dither data that has a plurality of dot locations, the dither data having a prescribed threshold at each dot location. The corresponding set density determining unit determines corresponding set densities for the plurality of the reference set densities.

Abstract: A mode setting portion sets a mode to either one of a normal mode in which a developer amount set value T is set to a base developer amount Tbase and a developer-saving mode in which the value T is set to a value smaller than the base developer amount Tbase based on a saving coefficient S. A parameter obtaining portion obtains both a cumulative number of printed sheets Pttl and a developer remaining amount Rt. A determining portion determines in the developer-saving mode whether a first inequality Rt?Tbase×Sdef×(Pmax?Pttl) is satisfied. A saving-coefficient setting portion sets the saving coefficient S to a default saving coefficient Sdef if the determining portion determines that the first inequality is satisfied, and sets the saving coefficient S to a value satisfying a second inequality Sdef<S?Rt/{Tbase×(Pmax?Pttl)} if the determining portion determines that the first inequality is not satisfied.

Abstract: An image-forming device includes an image-forming unit, a test image memory, a test image forming unit, a density measuring unit, an abnormality determining unit, a test image re-forming unit, and a density re-measuring unit. The image-forming unit forms an image on a recording medium based on inputted image data. The test image memory stores image data of test image used for calibrating density of image to be formed by the image-forming unit. The test image forming unit controls the image-forming unit to form the test image by reading image data for test image stored in the test image memory and outputting the image data to the image-forming unit. The density measuring unit measuring the density of the test image that the image-forming unit forms on the recording medium. The abnormality determining unit compares the density of test image measured by the density measuring unit with prescribed values pre-stored in association with the test images to determine whether the measured density is abnormal.

Abstract: An image recording apparatus includes an inputting unit, a half-tone processing unit, a printing unit, a correction-value storing unit, and a dot-position correcting unit. The inputting unit inputs image information on an image. The half-tone processing unit performs, based on the image information, a half-tone process for setting a plurality of dots to be printed on a recording medium. The printing unit prints the plurality of dots on the recording medium. The correction-value storing unit stores a set of correction values for correcting positions of the plurality of dots on the recording medium. The set of correction values includes at least one correction value that is provided for each of the positions of the plurality of dots. The dot-position correcting unit corrects the positions of the plurality of dots based on the set of correction values, thereby obtaining output positions for printing the plurality of dots on the recording medium.

Abstract: A discontinuous position detecting device for detecting a discontinuous position at which date and time information indicative of date and time of recording on a recording medium is discontinuous, the discontinuous position detecting unit including, a scanning unit that scans the recording medium in a first direction and in a second direction that is different from the first direction, a first detecting unit that detects a temporary discontinuous position located in a vicinity of the actual discontinuous position while the scanning unit scans the recording medium in the first direction, a second detecting unit that detects the actual discontinuous position while the scanning unit scans the recording medium in the second direction, and a scan controller that controls the scanning unit to scan the recording medium at a first scan speed except while the second detecting unit detects the actual discontinuous position, and to scan the recording medium at a second scan speed while the second detecting unit detects

Abstract: A color-conversion-table creating method includes (a) defining a color gamut in a first color space defined for a first device, the color gamut having a surface, an internal space surrounded by the surface, surface grid points positioned on the surface, and internal grid points positioned in the internal space, and determining a correspondence relationship between the surface grid points in the first color space and parameters in a second color space defined for a second device, (b) determining, based on the correspondence relationship determined in step (a), a correspondence relationship between the internal grid points in the first color space and parameters in the second color space, and (c) creating a color conversion table indicative of a correspondence relationship between all grid points in the first color space and parameters in the second color space based on both the correspondence relationship determined in step (a) and the correspondence relationship determined in step (b).

Abstract: In a color laser printer, the printing density of images to be formed is corrected based on a correction values stored in a control memory, For each printing operation the printer determines whether the correction values stored in the control memory matches a value stored in a backup memory. If the correction values in the control memory does not match the correction values, in the backup memory, the value of a number of printed pages A serving as the printing performance is incremented by one. If the number of printed pages A is greater than a reference performance number of sheets B pre-stored in memory, then the correction values in the control memory is copied to the backup memory, and the printing operation is executed. If a “Restore correction data” command is inputted, the contents of the backup memory are copied to the control memory.

Abstract: An image processing method determines a number of smoothing times Stime so that the number of times, at which the corrected tone values will be modified, increases as the amount of modification, by which the corrected tone values are required to be modified, increases; and modifies the corrected tone values by dividing the modification amount by the number of smoothing times Stime so that the actual printing characteristics R[i] predicted to be actually obtained approach the ideal characteristics T[i] in steps of the smoothing times Stime. Therefore, the image processing method can prevent an abrupt change in the characteristics of printed color density levels before and after the corrected tone values are modified, even when the modification amount of the corrected tone values is large.

Abstract: An information preparation device, such as a personal computer, detects non-consecutive position information, such as times and dates, based on parameters (S11), such as preinputted non-consecutive point detection margins, and prepares (S12) an information table with image information for each non-consecutive position. Based on editing parameters, the device synthesizes and edits (S13) the information in the information table by date and the like. Then the device divides the information into objects, which is a data format, by data The device retrieves contents information and the like that corresponds to the divided information, and generates (S14) and outputs (S15) scenario information. The date and the like indicated by the divided regions serve as an index on buttons of menus that the user operates to easily select and display a desired images.

Abstract: A method of making an information recording medium of the invention is that first a scenario template is generated based on an input scenario information and assignments of titles, chapters, programs, and cells are determined. Based on this assignments, a disk information file and video file management information are generated on a hard disk and a recording area of a video file data is allocated. At this time, in the disk information file and the video file management information, management information as to menu information corresponding to the scenario template and recording area of cells to be recorded in the video file data. Therefore, the efficiency of making a multimedia optical disc, such as a DVD, which records still picture data, moving picture data, or audio data such as voice, as a content, can be increased.

Abstract: A video image edit device for editing video image contents recorded on a video tape. The video tape is rewound to its leading end and a start point time code and a maximum video image content period are stored in a RAM. Then, a video reproduction is started and a time code and time information for a video image content are retrieved. A difference between the present time and a precedent time is compared with a predetermined period to detect discontinuity of the video image content. If discontinuity cannot be detected, judgment is made as to whether or not a difference between the present time code and a start point time code exceeds the maximum video image content period to determine a subdivision point. If discontinuity is detected, or if the difference exceeds the maximum video image content period, a present end point time code and next start point time code are stored for again detecting the discontinuity or judging the next subdivision point.