Abstract: An image forming apparatus includes: a recording head which has a plurality of nozzles for ejecting an ink onto a recording medium; a movement device which causes relative movement between the recording head and the recording medium; an image forming controller which controls the recording head according to image data in such a manner that an image corresponding to the image data is formed on the recording medium; an ejection abnormality detection device which detects ejection abnormality including at least one of non-ejection and ejection direction deviation of the plurality of nozzles; a compensation device which compensates an image defect caused by the ejection abnormality; and a determination device which determines whether or not the head is in a state where the compensation device can compensate the image defect, according to detection result of the ejection abnormality detection device.

Abstract: An image forming apparatus has: a recording head for forming an image on a recording medium; a color correction processing device which performs a color correction processing with respect to an input image data; an image output controller which controls the recording head according to the image data after performing the color correction processing in such a manner that the image corresponding to the image data is formed on the recording medium; a patch forming controller which controls the recording head so as to form a patch for colorimetry on the recording medium; a memory device for storing an output condition for forming the image, and measured results of the patch for colorimetry formed under the output condition; and a correction data change device which changes a correction data used for the color correction processing performed by the color correction processing device, when difference between the measured results of the patch for colorimetry that are obtained by forming the patch for colorimetry and

Abstract: The image forming apparatus includes: an area tone setting device which sets an arbitrary tone correction table for each of image forming areas obtained by dividing a recording medium into a plurality of areas; a tone correction table storage device which stores tone correction tables set respectively for the image forming areas by the area tone setting device; an area judgment device which judges the image forming areas on which respective pixels constituting input image data are to be printed; a tone correction table selection device which selects from the tone correction table storage device one of the tone correction tables corresponding to the image forming area judged by the area judgment device; and a tone correction device which performs tone correction of each pixel constituting the input image data, using the tone correction table selected by the tone correction table selection device.

Abstract: Threshold matrixes for a C-separation and an M-separation of main colors are used to convert a continuous-tone image subjected to color separation into dot patterns for the C-separation and the M-separation. The dot patterns are binary images in which no screen ruling or screen angle is defined. Then, a color image is reproduced by overlaying the dot patterns for the C-separation and the M-separation. When the dot patterns for the C-separation and the M-separation are converted into patterns in the frequency domain, main frequency components obtained by the conversion have a substantially-constant predetermined pattern frequency for all angles, and the intensity distribution of the main frequency components is varied based on the C-separation and the M-separation.

Abstract: An image processing method comprises: a step of acquiring recording characteristic information of the recording elements; a step of obtaining inconsistent density correction information from the recording characteristic information acquired in the characteristic information acquiring step; a step of obtaining inconsistency corrected image data from the inconsistent density correction information and data of the input image; a step of generating inconsistency correction unfit image position information by detecting an inconsistency correction unfit image from data of the input image; a step of obtaining image data having an N number of tones from the inconsistency corrected image data; a step of judging whether non-correctable conditions arise according to the inconsistent density correction information and the inconsistency correction unfit image position information; and a step of alerting a user to an image anomaly according to judgment results given in the image anomaly judgment processing step.

Abstract: An image recording method comprises the steps of: acquiring first recording characteristic information of recording elements of a recording head by reading a first test pattern formed with ejecting ink droplet from the recording elements; obtaining first density unevenness correction information based on the first recording characteristic information; acquiring second recording characteristic information of the recording element by reading a second test pattern different from the first test pattern formed with ejecting ink droplet from the recording elements; obtaining second density unevenness correction information based on the second recording characteristic information; correcting image data based on the first and second density unevenness correction information to calculate density unevenness-corrected image data; and calculating an ejection pattern of the recording element based on the unevenness-corrected image data.

Abstract: A non-evaporation getter material suitable for non-evaporation getters disposed in electron devices, such as fluorescent luminous tubes. The getter material is sized and shaped to more efficiently absorb gases actively at low temperatures.

Abstract: An object of the invention is to allow receiving a radio wave signal in a comfortable manner by overcoming defects in technique and performance according to the related art in reducing a multipath noise by use of an adaptive digital filter. In a multipath noise reducing apparatus (20), an A/D converter (24) converts a received signal from an analog signal to a digital signal, and an ADF (21) carries out a digital signal processing to reduce the multipath noise. At a time of determination of an overmodulation by an overmodulation determining unit (22), an operation of the ADF (21) is turned off to prevent deterioration in a distortion property. Therefore, the multipath noise reduction and prevention of the corresponding deterioration in the distortion property at a time of the overmodulation can be achieved at the same time.

Abstract: A fuel cartridge is provided. The fuel cartridge capable of reliably suppressing fuel leakage and realizing improved safety. The fuel cartridge includes a cartridge body having a fuel supply port, and a seal member for directly closing the fuel supply port. The cartridge body has an atmosphere communication port, and the seal member directly closes the fuel supply port and the atmosphere communication port.

Abstract: A dot pattern with a plurality of pixels representing a two-dimensional image is formed on a printing plate material by applying laser beams, which are turned on and off for each pixel depending on dot pattern data, to the printing plate material in a main scanning direction, while the laser beams are moved in an auxiliary scanning direction that is orthogonal to the main scanning direction. A threshold matrix having an array of thresholds is obtained for generating a dot where the degree of a variation of the dot periphery length in a main scanning direction is smaller, i.e., a dot where the dot periphery length in the main scanning direction has a smaller standard deviation.

Abstract: A normalization threshold side size Nr which serves as an index indicative of how many times the pattern frequency r is repeated in one threshold matrix is defined as Nr=N×r/R where N represents a size of one side of the threshold matrix as the number of pixels, and the threshold array of the threshold matrix is determined such that the normalization threshold side size Nr is of an value greater than 65.

Abstract: The number of pixels of a dot of a minimum size, a pattern frequency of an intermediate tone, the number of new dots of the minimum size at each dot percentage are determined. Then, thresholds in the threshold matrix are determined so that the optimum dot pattern at each dot percentage is obtained, and a threshold matrix is generated. A threshold matrix for C-separation is assigned to a separation for R that is complementary to C. A threshold matrix for M-separation is assigned to a separation for G that is complementary to M. A threshold matrix for Y-separation is assigned to a separation for B that is complementary to Y.

Abstract: The number of pixels of a dot of a minimum size, a pattern frequency of an intermediate tone, the number of new dots of the minimum size at each dot percentage are determined. Then, thresholds in the threshold matrix are determined so that the optimum dot pattern at each dot percentage is obtained, and a threshold matrix is generated. A threshold matrix for C-separation is assigned to a separation for R that is complementary to C. A threshold matrix for M-separation is assigned to a separation for G that is complementary to M. A threshold matrix for Y-separation is assigned to a separation for B that is complementary to Y.

Abstract: A battery system capable of inhibiting a reverse voltage applied to a unit cell that has lost the electromotive force without active control is provided. The battery system include two or more unit cells electrically connected in series, and a rectification section that is composed of at least one of an electronic device having a rectification function and an interface having a rectification action, and is electrically connected to the respective two or more unit cells in parallel.

Abstract: Ultradispersed ones of primary particles of nanometer-sized carbon are obtained by applying a wet-type milling method and/or a wet dispersion method to an aggregate structure of the primary particles to overcome van der Waals forces, by which forces the primary particles are held together to form the aggregate structure, whereby the ultradispersed primary particles are obtained in a colloidal dispersion on a large-scale basis at low cost without using any additive. In a method of manufacturing the ultradispersed primary particles, the wet-type milling method is carried out in a ball mill, preferably in combination with a high-energy ultrasonic-wave process carried out in a dispersing medium such as pure water, whereby a colloidal solution or slurry with a low-concentration of the primary particles ultradispersed in the dispersing medium is obtained.

Abstract: FM screens are used for CMY-separations for which human visual sensitivity is relatively low. An AM screen is used for K-separation for which human visual sensitivity is high. The human visual sensitivity to one color is defined based on the contrast with the color white.

Abstract: A threshold array having an array of thresholds for reproducing a gradation with a dot pattern as a clustered pattern of dots each made up of one or more blackening pixels is corrected. At least one non-contact point candidate position to be turned into a non-contact point is determined among contact points of the dots. Then, at least one contact point candidate position to be turned into a contact point is determined among non-contact points of the dots at the given gradation. Thereafter, the threshold array is corrected by switching around a threshold for the non-contact point candidate position and a threshold for the contact point candidate position, whereby the layout of contact points of the dots can be corrected.

Abstract: Halftone image data is generated according to a threshold array in which thresholds T up to a given gradation have been determined, and candidate pixels to be blackened are then determined. Then, a low-frequency component extractor extracts low-frequency component data from density image data which simulates the density of the halftone image data corresponding to an output image from an image output apparatus. A particular frequency component divider 70 divides the extracted low-frequency component data into particular frequency component data for intensifying the low-frequency components, and blackening candidate pixels for intensifying the particular frequency components are excluded, thus narrowing down candidate pixels. The positions of thus determined blackening candidate pixels are determined as the positions of thresholds for a next gradation.

Abstract: A non-evaporation getter material suitable for non-evaporation getters disposed in electron devices, such as fluorescent luminous tubes. The getter material is sized and shaped to more efficiently absorb gases actively at low temperatures.