公开(公告)号：EP0560387A3

公开(公告)日：1994-01-05

申请号：EP93104067.9

申请日：1993-03-12

申请人： MITA INDUSTRIAL CO. LTD.

发明人： Fujimoto, Masaya, c/o Mita Industrial Co., Ltd. ,  Amakawa, Katsumi, c/o Mita Industrial Co., Ltd. ,  Okumura, Ryuichi, c/o Mita Industrial Co., Ltd. ,  Yamamoto, Haruo, c/o Mita Industrial Co., Ltd. ,  Watanabe, Toshio, c/o Mita Industrial Co., Ltd.

IPC分类号： H04N1/46

CPC分类号： H04N1/60

摘要： The average value of each of yellow, magenta and cyan color image data of a color-to-be-converted which data are obtained at the time of pre-scanning of a copying machine and stored in memories, respectively, is calculated (S5), and then, predetermined set values are respectively added to and subtracted from the calculated average values of yellow, magenta and cyan (#5, #20) to obtain upper and lower limit values of the conversion range. When the lower limit value obtained by subtraction is below a predetermined lower limit restriction value, the lower limit restriction value is set as the lower limit value of the conversion range (#10, #30). With this feature, when an extremely pale color is specified as a color-to-be-converted in a region other than a background portion of a color original where no letters, etc. are printed, the color of the background portion is not converted together with the specified color.

摘要翻译： 计算在复印机的预扫描时获得的并分别存储在存储器中的数据的每个黄色，品红色和青色图像数据的平均值（S5） 然后，将预定的设定值分别加上黄色，品红色和青色的计算平均值（＃5，＃20），并从中减去，以获得转换范围的上限值和下限值。 当通过减法获得的下限值低于预定的下限限制值时，将下限限制值设定为转换范围的下限值（＃10，＃30）。 利用该特征，当在打印没有字母等的彩色原稿的背景部分之外的区域中指定非常浅的颜色作为要转换的颜色时，背景部分的颜色不被转换 连同指定的颜色。

公开(公告)号：EP0560387A2

公开(公告)日：1993-09-15

申请号：EP93104067.9

申请日：1993-03-12

申请人： MITA INDUSTRIAL CO. LTD.

发明人： Fujimoto, Masaya, c/o Mita Industrial Co., Ltd. ,  Amakawa, Katsumi, c/o Mita Industrial Co., Ltd. ,  Okumura, Ryuichi, c/o Mita Industrial Co., Ltd. ,  Yamamoto, Haruo, c/o Mita Industrial Co., Ltd. ,  Watanabe, Toshio, c/o Mita Industrial Co., Ltd.

IPC分类号： H04N1/46

CPC分类号： H04N1/60

摘要： The average value of each of yellow, magenta and cyan color image data of a color-to-be-converted which data are obtained at the time of pre-scanning of a copying machine and stored in memories, respectively, is calculated (S5), and then, predetermined set values are respectively added to and subtracted from the calculated average values of yellow, magenta and cyan (#5, #20) to obtain upper and lower limit values of the conversion range. When the lower limit value obtained by subtraction is below a predetermined lower limit restriction value, the lower limit restriction value is set as the lower limit value of the conversion range (#10, #30). With this feature, when an extremely pale color is specified as a color-to-be-converted in a region other than a background portion of a color original where no letters, etc. are printed, the color of the background portion is not converted together with the specified color.

摘要翻译： 计算在拷贝机的预扫描时分别获得并存储在存储器中的待转换颜色的哪个数据的黄色，品红色和青色图像数据的每个的平均值（S5） ，然后将预定的设定值分别加入并从所计算的黄色，品红色和青色的平均值（＃5，＃20）中减去，以获得转换范围的上限和下限值。 当通过减法获得的下限值低于预定下限限制值时，将下限限制值设定为转换范围的下限值（＃10，＃30）。 利用该特征，当在除了没有字母等的彩色原稿的背景部分之外的区域中指定非常浅的颜色作为要转换的颜色时，背景部分的颜色不被转换 连同指定的颜色。