Abstract: A thickness variation detector of a photoconductor includes: a current detection unit that detects a value of current being used for charging a surface of the photoconductor in a state in which a charging unit is in contact with a surface of the photoconductor; and a thickness variation detection unit that detects a thickness variation along a rotation direction of the photoconductor based on the value of current.

Abstract: An image processing apparatus comprises an image generating unit for generating an image from image data for an image containing an embossed part formed on a medium, the image generated by the image generating unit being different in form of the embossed part or neighborhood thereof from the image formed on the medium, and a display control unit for displaying the image generated by the image generating unit on a display apparatus.

Abstract: An image processing apparatus includes an input section and a binarizing section. The input section inputs multilevel image data. The binarizing section binarizes multilevel image data to generate output image data representing halftone dots each having a hollow-structure. The binarizing section enlarges the halftone dots in a predetermined direction preferentially in accordance with the input multilevel image data.

Abstract: An image processor for suppressing color variations includes a correction unit and a gradation adjustment unit. The correction unit converts input image data to have higher gray level than that of the input image data, and performs correction processing on the converted image data. The gradation adjustment unit decreases the gray level of the image data on which the correction processing has been performed.

Abstract: An image forming apparatus includes: an image processing section for performing tone correction of an image signal; and an image output section for outputting an image in accordance with an image recording signal output, wherein the image processing section includes: a tone correction processing unit which, in accordance with an input image signal, outputs the image signal having undergone tone correction; a density calculation unit for calculating a density value at a given position in a scanning direction of a test pattern image in accordance with an image signal pertaining to the input test pattern image; and a discrimination unit for discriminating whether or not density inconsistencies having arisen at the given position in the scanning direction can be corrected by the tone correction processing unit, on the basis of the density value calculated by the density calculation unit and a predetermined threshold value.

Abstract: An image processing apparatus includes: a composite unit that generates a composite parameter used for implementing a time varying variation correction processing for suppressing color variations associated with lapse of time and a spatial variation correction processing for suppressing color variations in accordance with a position in an image, on the basis of a time varying correction parameter used for the time varying variation correction processing and a spatial correction parameter used for the spatial variation correction processing; and an image correction unit that subjects input image data to the time varying variation correction processing and the spatial variation correction processing through use of the composite parameter generated by the composite unit.

Abstract: An image processing method generates a halftone-dot image by forming a halftone dot, which is represented by a set of one or plural output dots and corresponds to an intensity of an input image signal, while making a part of the dots constituting the halftone dot to be an actual non-output dot so as to reduce an amount of a coloring material of the halftone-dot portion. When the intensity of the image signal exceeds a predetermined value and is in a predetermined range, while maintaining contour dots, which are output dots contribute to formation of a contour of the halftone dot, to be the output dot, the image processing method makes a part of dots inside the contour dots to be the actual non-output dot.

Abstract: An image processing method generates a halftone image by forming a halftone dot represented by a set of one or plural output dots corresponding to an intensity of an input image signal while making a part of the dots constituting the halftone dot to be an actual non-output dot so as to reduce an amount of a coloring material of a halftone-dot portion. The image processing method includes holding in a predetermined storage medium halftone-dot profile data for forming the halftone dot corresponding to the intensity of the image signal and gap-size profile data representing a size of a set of the non-output dot; and generating the halftone dot comprising a gap having a size based on the gap-size profile data, a size of the halftone dot being based on the halftone-dot profile data.

Abstract: An image processing apparatus comprises an image generating unit for generating an image from image data for an image containing an embossed part formed on a medium, the image generated by the image generating unit being different in form of the embossed part or neighborhood thereof from the image formed on the medium, and a display control unit for displaying the image generated by the image generating unit on a display apparatus.