%A Chen Baochun,Gao Hongling %T THE METHODS RESTRAINING BACKGROUND ON COPIES %0 Journal Article %D 1996 %J Data Analysis and Knowledge Discovery %R 10.11925/infotech.1003-3513.1996.05.13 %P 48-51 %V 12 %N 5 %U {https://manu44.magtech.com.cn/Jwk_infotech_wk3/CN/abstract/article_2556.shtml} %8 1996-10-25 %X

This paper summarizes cause of backgound on copies,takes more than 20 kinds of Canon,Ricoh,Toshiba,U-Bix and Xerox PPC for example,presents specific adjusting methods-after copy density key restraining brackground expired.