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    • 2. 发明授权
    • Fixing device, image forming apparatus, and fixing method
    • 固定装置,成像装置和固定方法
    • US08768194B2
    • 2014-07-01
    • US13541170
    • 2012-07-03
    • Satoshi NakamuraYasuto OkabayashiToshiyuki Miyata
    • Satoshi NakamuraYasuto OkabayashiToshiyuki Miyata
    • G03G15/20
    • G03G15/2017G03G15/2042
    • A fixing device includes: a fixing unit that transports a recording medium as nipped between a pressure rotary member and a heating rotary member, to thereby fix a developer image on the recording medium; temperature detectors that detect temperatures of regions of the pressure rotary member; cooling units that cool the detected regions; and a controller that controls the cooling units to, if a temperature difference between the regions is more than a set temperature difference, execute first cooling for reducing the temperature difference to the set temperature difference or less, and to, if a width of the recording medium perpendicular to a transport direction thereof used in an immediately preceding image formation is equal to or less than a preset width, execute, subsequently to the first cooling, second cooling for cooling the pressure rotary member for a preset time.
    • 定影装置包括:定影单元,其传送被夹在压力旋转构件和加热旋转构件之间的记录介质,从而将显影剂图像固定在记录介质上; 温度检测器,其检测压力旋转构件的区域的温度; 冷却检测区域的冷却单元; 以及控制器,其控制所述冷却单元,如果所述区域之间的温度差大于设定的温度差,则执行用于将所述温度差降低到设定温度差以下的第一冷却,以及如果所述记录的宽度 在紧接着前一图像形成中使用的与其传送方向垂直的介质等于或小于预设宽度,在第一冷却之后执行用于在预定时间内冷却压力旋转构件的第二冷却。
    • 7. 发明申请
    • IMAGE PROCESSING APPARATUS AND PIXEL INTERPOLATION METHOD
    • 图像处理装置和像素插值方法
    • US20140126840A1
    • 2014-05-08
    • US14156141
    • 2014-01-15
    • Satoshi Nakamura
    • Satoshi Nakamura
    • G06T3/40
    • G06T3/4007H04N1/4097
    • A periodicity determining unit determines whether an image region including a target pixel is a periodic region in which pixel values vary periodically. A first generating unit generates a pixel value using a first interpolation method. A second generating unit generates a pixel value using a second interpolation method. A control unit determines, based on the determination result of the periodicity determining unit, which one of the first and second generating units is to be used for generating a pixel value of the target pixel. A pixel value inserting unit inserts the generated pixel value to the target pixel. The periodicity determining unit includes a cycle estimating unit to estimate, using pixel values of pixels within the image region, a variation cycle of the pixel values, and/or a determining unit to determine whether each region positioned at left and right sides of the target pixel is the periodic region.
    • 周期性确定单元确定包括目标像素的图像区域是否是像素值周期性变化的周期性区域。 第一生成单元使用第一插值方法生成像素值。 第二生成单元使用第二插值方法生成像素值。 控制单元基于周期性确定单元的确定结果确定要用于生成目标像素的像素值的第一和第二生成单元中的哪一个。 像素值插入单元将生成的像素值插入到目标像素。 周期性确定单元包括:周期估计单元,用于使用图像区域内的像素的像素值估计像素值的变化周期;和/或确定单元,确定位于目标的左侧和右侧的每个区域 像素是周期性区域。
    • 9. 发明授权
    • Image forming apparatus and image forming method determining correct pixel value of target pixel subject to interpolation
    • 图像形成装置和图像形成方法,用于确定经过插值的目标像素的正确像素值
    • US08659801B2
    • 2014-02-25
    • US13215420
    • 2011-08-23
    • Satoshi Nakamura
    • Satoshi Nakamura
    • H04N1/40
    • H04N1/401H04N1/3935
    • An image forming apparatus includes an image interpolation unit to compute a correct pixel value of a target pixel subject to interpolation of a halftone image. The image interpolation unit includes a base pattern setting unit to set a base pattern including the target pixel, a reference pattern setting unit to set reference pattern in a region peripheral to the target pixel, an analogous pattern acquisition unit to acquire at least one analogous pattern analogous to the base pattern from the reference pattern, a high-resolution pattern creating unit to create a high-resolution pattern having a predetermined resolution or higher by synthesizing the acquired analogous pattern, a pixel value estimating unit to compute an estimated pixel value of the target pixel based on the created high-resolution pattern, and a pixel value determination unit to determine the correct pixel value of the target pixel based on the computed estimated pixel value.
    • 图像形成装置包括图像内插单元,用于计算经过半色调图像插值的目标像素的正确像素值。 图像插值单元包括基本图案设置单元,用于设置包括目标像素的基本图案,参考图案设置单元,用于在目标像素周边的区域中设置参考图案;类似图案获取单元,用于获取至少一个类似图案 类似于来自参考图案的基本图案的高分辨率图案创建单元,通过合成所获取的模拟图案来创建具有预定分辨率或更高分辨率的高分辨率图案;像素值估计单元,用于计算所估计的像素值, 基于所创建的高分辨率图案的目标像素以及基于所计算的估计像素值来确定目标像素的正确像素值的像素值确定单元。