Abstract: An image processing apparatus includes a forming unit configured to form, on a sheet, a pattern from which at least two lines each connecting two points located at positions parallel to a conveyance direction of the sheet are detectable, a detection unit configured to detect, from the pattern formed by the forming unit, at least two lengths of lines each connecting two points located at positions parallel to the conveyance direction, and an acquisition unit configured to acquire a correction value used when correction is performed so that there is no difference between the lengths of a plurality of lines detected by the detection unit. The forming unit forms an image obtained by correcting a corrected image to be output using the correction value acquired by the acquisition unit.

Abstract: Provided are a color-adjusting method and a non-transitory computer readable medium storing a color-adjusting program. The color-adjusting method is used in converting colors of a first device into colors of a second device. The method includes: using a processor of a color-conversion device to perform: representing the gamut of the second device on a lightness-chroma plane for a hue in a color system; obtaining a limiting value of a total quantity of color material; dividing a region outside the gamut into a high-lightness region and a low-lightness region, and further dividing the low-lightness region into a low-chroma region and a medium-high-chroma region based on a reference point defined according to the limiting value; defining a gamut-mapping angle for each of the resulting divided regions; and mapping out-gamut colors within the gamut of the second device by using the gamut-mapping angle.

Abstract: A contone source image is processed to create halftone outputs by identifying intensity thresholds based on the coordinates of the pixels of the source image. The halftone output corresponding to a particular pixel of the contone image in a particular color plane is determined by comparing the intensity of the pixel and any previously accumulated output error to the intensity threshold corresponding to the pixel.

Abstract: What is disclosed is a novel system and method for determining and capturing the designer intended colors in an image so that the printer has an accurate color rendition target. The present method operates by capturing the monitor RGB values together with the monitor profile to get a representation of the intended image in a device-independent color space like L*a*b*. The teachings hereof work for vector graphics as well as raster images. Advantageously, this invention solves a real problem currently existing, for example, in the packaging print market, wherein colors produced from multiple spot colors with their overlays and blends are not well color managed.

Abstract: A tincture adjustment value used to adjust a monochrome signal to a tincture desired by a user is set, and a tincture conversion table and chromaticity line table are generated based on that tincture adjustment value and the profile of an image output apparatus. Using the generated tables, a lightness signal L* corresponding to an input monochrome signal is converted into a distance signal l on a chromaticity line, and the distance signal l is converted into a chromaticity signal (a*, b*). The lightness signal L* and chromaticity signal (a*, b*) are converted into a color signal of the image output apparatus.

Abstract: An illumination device includes a light guide made of plastic, and a light source including a light emitting element whose dominant wavelength is a light emission wavelength in an infrared region, and identifies a banknote. White reference plates are provided at positions that are at opposite ends of a rod lens array and cover respective areas external to an image region across the banknote. A correction coefficient is acquired by calculation. The calculation is made by correcting an illuminance such that IR correction data is substantially identical to IR reference data preliminarily stored in a memory circuit in a signal processor on the basis of IR white reference data representing a white reference illuminance generated from light reflected from the white reference plates. The correction coefficient is used for correcting IR image data when the banknote is read.

Abstract: A printing apparatus, which performs printing using a cyan ink, a magenta ink, a yellow ink, and two kinds of black inks, includes an image data acquisition section configured to acquire image data representing an image targeted for printing; a black line specification section configured to specify a black line included in the image on the basis of the image data; a printing control section configured to perform control so as to, along with performing printing of the black line by using the two kinds of black inks, perform printing with respect to pixels forming at least one portion of the black line so as to overlap the two kinds of black colors, and perform printing of a portion other than the black line by using at least one of the cyan ink, the magenta ink, the yellow ink, and the two kinds of black inks.

Abstract: A host computer groups a plurality of pixels to generate pseudo pixels, assigns representative values in an RGB format to the pseudo pixels, and transfers the representative values to a printer. Further, the host computer performs halftone processing and transfers generated dot data to the printer for pixels constituting the pseudo pixel which includes edges therein or of which boundary is the edge. The printer performs printing by using the transferred dot data and the representative values.

Abstract: An image creating apparatus has a printing device configured to print a changed image on a recording medium; a difficult-to-recognize color arrangement storage unit configured to store a difficult-to-recognize color arrangement that is difficult to visually recognize; an object extracting unit configured to extract objects from an original image; a difficult-to-recognize object detecting unit configured to detect a difficult-to-recognize object; a representative color obtaining unit configured to obtain the representative color of the difficult-to-recognize object; a color arrangement changing unit configured to (i) change the color arrangement of the image so that the color arrangement of the periphery is changed from the difficult-to-recognize color arrangement in at least part of the difficult-to-recognize object and (ii) embed information about the representative color as dots; and a changed image printing unit configured to command the printing device to print the changed image with the changed color arr

Abstract: In a print control device, an executing unit executes an error diffusion process in which one of a first and second setting processes is executed. In the first setting process, the executing unit determines whether a first condition is satisfied. The first condition includes that the corrected value of the pixel data is larger than the first threshold value and that the first allowance condition determined by a first probability is satisfied. After the executing unit determines that the first condition is not satisfied, the executing unit determines whether a second condition is satisfied. The second condition includes that the corrected value of the pixel data is larger than the second threshold value. In the second setting process, the executing unit determines whether the second condition is satisfied. After the executing unit determines that the second condition is not satisfied, the executing unit determines whether the first condition is satisfied.

Abstract: A logic module is to identify whether to print a standard printout or an erasable printout. A print module is to print the erasable printout in response to the identifying by the logic module. The erasable printout includes an erasable feature not present in the standard printout.

Abstract: An image processing device includes an image scanning unit, a first paper feed cassette, and an image recording unit. The image scanning unit scans a document placed on a document scanning surface, which defines a maximum document size. The first paper feed cassette accommodates recording paper of a size up to a first size, which is the same as the maximum document size. The image recording unit records an image on the recording paper. The maximum document size is defined by a scan maximum main scanning length and a scan maximum sub-scanning length that is preferably shorter than the scan maximum main scanning length. A record main scanning direction is parallel or substantially parallel to a long side of the recording paper of the first size accommodated in the first paper feed cassette. A scan main scanning direction is parallel or substantially parallel to the record main scanning direction.

Abstract: In an error diffusion process, a random number acquiring unit acquires a random number included in a first random number range that depends on the gradation value of the target pixel data, in a case that the gradation value of the target pixel data is in a first range. The first correcting unit corrects the gradation value of the target pixel data into a first corrected gradation value by using the random number. The dot value setting unit sets a dot value of the target pixel data to either a first dot value or a second dot value. The first random number range corresponding to the gradation value smaller than the second threshold value includes a specific random number such that the first correcting unit corrects the gradation value into the first corrected gradation value greater than the second threshold value by using the specific random number.

Abstract: An inkjet printer includes an image-forming part, forming an auxiliary layer on a base material by ejecting droplets of auxiliary ink and forming an image on the auxiliary layer by ejecting droplets of image-forming ink, the auxiliary ink changing a dot formation state of droplets of the image-forming ink. In a storage part, a reference table that associates each of a plurality of types of base materials with a proper dot area rate to be used when forming the auxiliary layer is stored. In a dot-area-rate determination part, a dot area rate to be used when forming the auxiliary layer on a target base material is determined as an auxiliary ink dot area rate by referencing the reference table using the type of the target base material. This enables the inkjet printer to form a highly precise image on various base materials.

Abstract: Upon receiving information that indicates the type of printing medium from an information processing apparatus, a printing apparatus determines whether a parameter corresponding to the type of printing medium indicated by the information is stored. When it is determined that the parameter is stored, the printing apparatus transmits the parameter to the information processing apparatus. The information processing apparatus performs color correction for image data using the parameter received from the printing apparatus. The information processing apparatus transmits the color-corrected image data to the printing apparatus, and the printing apparatus prints an image based on the color-corrected image data.

Abstract: Provided is an image processing device including an image sequence acquisition unit acquiring a read image sequence made up of images read from each of recording media on which a two-dimensional code enabling a page number of a document to be specified is printed, a page number specifying unit specifying the page number corresponding to each of the read images in the read image sequence based on a reading result of the two-dimensional code image, and a page number determining unit determining the page number corresponding to a target image which is a read image of which the page number is not specified based on a position of the target image in the read image sequence, a position in the read image sequence, of the read image of which the page number is specified, and the page number corresponding to the read image of which the page number is specified.

Abstract: An image processing apparatus includes an image acquiring unit, a distance acquiring unit, a painterly transformation processor, a thickness information acquiring unit, and a data generating unit. The distance acquiring unit acquires distance information for each of at least one object image included in an acquired image. The painterly transformation processor transforms each of the object image, included in the acquired image, into a painterly image. The thickness information acquiring unit acquires thickness information corresponding to the distance for each of the object image. The data generating unit generates data in which the painterly image and the thickness information are associated with each other.

Abstract: An image reading device includes a conveying unit, reading unit, detecting unit, and control unit. The conveying unit conveys two sheets of the original one by one. The reading unit reads a sheet passing past a reading position. The detecting unit detects a sheet passing past a detection position upstream of the reading position in a conveying direction. The control unit controls the reading unit to start a reading process when a leading edge of sheet reaching a position upstream of the reading position by a first distance, controls the reading unit to stop the reading process when a trailing edge of sheet reaching a position downstream of the reading position by a second distance, determines an interspace between the trailing edge of sheet and a leading edge of a subsequently-conveyed sheet, and updates the first distance and the second distance based on the interspace.

Abstract: A method for capturing high-quality document images, comprising steps which first attempt to correct deficiencies in a captured image, then subsequently score the corrected image for quality, and finally, use the score to determine whether the image quality is acceptable. Unacceptable images are flagged for recapture. Corrected deficiencies comprise exposure, geometric distortions and extraneous background. Scored attributes comprise focus, contrast, and legibility.

Abstract: An image processing apparatus includes a display unit; a screen control unit configured to control display of operation screens on the display unit so that there are more operation procedures for color printing compared to monochrome printing in printing operations performed by a user; a setting change unit configured to change a print setting of print data of a selected stored job, among stored jobs stored in a predetermined storage area, to monochrome or color when a print execution instruction is received, based on the print execution instruction received from an operation screen controlled and displayed by the screen control unit; and a print control unit configured to execute monochrome printing or color printing on the print data according to the print setting changed by the setting change unit.