公开(公告)号：US20040080787A1

公开(公告)日：2004-04-29

申请号：US10282864

申请日：2002-10-29

Applicant: International Business Machines Corporation

Inventor： Kohichi Kakikawa ,  Takuji Kudoh ,  Minoru Nochise ,  Kiyoshi Watanabe

IPC: G06K015/02 ,  H04N001/387 ,  H04N001/60

CPC classification number: H04N1/38 ,  B41M7/0009 ,  G03G21/00

Abstract: In order to reuse print sheets, a region on a printed sheet where old information is printed is detected and a region corresponding to the region where the old information is printed is identified as an erasing region. A pattern corresponding to the erasing region is printed on the erasing region with erasing ink or toner, which has a different color from a color of printing ink or toner, whereby the printed old information is erased. Then, new information is printed on the print sheet, from which the old information has been erased, by use of the printing ink or toner.

Abstract translation: 为了重新使用打印纸张，检测印刷有旧信息的打印纸上的区域，并将与将旧信息打印的区域对应的区域识别为擦除区域。 与擦除区域相对应的图案用擦除墨水或调色剂印刷在擦除区域上，墨水或墨粉具有不同于印刷油墨或调色剂的颜色的颜色，从而印刷的旧信息被擦除。 然后，通过使用印刷油墨或墨粉，在打印页上打印新信息，旧信息已被擦除。