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    • 32. 发明授权
    • Image forming apparatus and method of calculating toner consumption amount
    • 图像形成装置和计算调色剂消耗量的方法
    • US07013093B2
    • 2006-03-14
    • US10722128
    • 2003-11-26
    • Hiroshi Nakazato
    • Hiroshi Nakazato
    • G03G15/08
    • G03G15/0856G03G15/0849G03G15/0863G03G15/5058G03G15/556
    • During an ordinary image forming operation, the number of print dots is counted based on an image signal, and a toner consumption amount is calculated from the result. Meanwhile, during an operation under a non-ordinary mode which is different from the ordinary image forming operation, a test pattern offset value Totn is extracted as a toner consumption amount which corresponds to the operation (Step S141). The test pattern offset value Totn and a drive offset value Todn, which corresponds to the amount of toner which is scattered into inside an apparatus, are subtracted from a remaining toner amount Tr which is stored in a memory, whereby a remaining toner amount of toner remaining in the developer 4Y after the operation is calculated (Steps S142 through S146).
    • 在普通图像形成操作期间,基于图像信号对打印点的数量进行计数,并根据结果计算调色剂消耗量。 同时,在与普通图像形成操作不同的非普通模式下的操作期间,提取测试图案偏移值Totn作为对应于操作的调色剂消耗量(步骤S141)。 从存储在存储器中的剩余调色剂量Tr中减去与散射到设备内部的调色剂量对应的测试图案偏移值Totn和驱动偏移值Todn,由此调色剂的剩余调色剂量 计算出操作后残留在显影剂4Y中(步骤S142至S146)。
    • 37. 发明授权
    • Image forming apparatus with adjustable image density and method
    • 具有可调图像浓度和方法的图像形成装置
    • US06336008B1
    • 2002-01-01
    • US09625055
    • 2000-07-24
    • Hiroshi NakazatoTakashi Hama
    • Hiroshi NakazatoTakashi Hama
    • G03G1500
    • G03G15/065G03G15/5041G03G2215/00042G03G2215/0174
    • A development bias calculation and an electrifying bias calculation are executed in this order. In the development bias calculation, a plurality of toner images are formed as first patch images while changing the development bias. An optimal development bias, which is necessary to obtain the target density, is determined based on densities of the first patch images. In the electrifying bias calculation, toner images are formed as second patch images while changing the electrifying bias with the development bias fixed to the optimal development bias. An optimal electrifying bias, which is necessary to obtain the target density, is determined based on densities of the second patch images.
    • 以此顺序执行显影偏差计算和通电偏差计算。 在显影偏压计算中,在改变显影偏压的同时,形成多个调色剂图像作为第一贴片图像。 基于第一贴片图像的密度确定获得目标密度所必需的最佳显影偏差。 在通电偏压计算中,调色剂图像形成为第二贴片图像,同时将显影偏压改变为最佳显影偏压的充电偏压。 基于第二贴片图像的密度确定获得目标密度所必需的最佳带电偏压。