公开(公告)号：EP0149699B1

公开(公告)日：1987-12-02

申请号：EP84100714.9

申请日：1984-01-24

申请人： Komori Printing Machinery Co., Ltd.

发明人： Watanabe, Hideo

IPC分类号： B65H7/12

CPC分类号： B65H7/125 ,  B65H2553/41

公开(公告)号：EP0149699A1

公开(公告)日：1985-07-31

申请号：EP84100714.9

申请日：1984-01-24

申请人： Komori Printing Machinery Co., Ltd.

发明人： Watanabe, Hideo

IPC分类号： B65H7/12

CPC分类号： B65H7/125 ,  B65H2553/41

摘要： Double sheet detection method and apparatus of a sheet-fed rotary press, wherein a theoretical reference value (Mn) is set as an intermediate value between a first theoretical amount of light transmitted through one sheet (Line A) and a second theroretical amount of light transmitted through two sheets (Line B), respectively; the theoretical reference value is subtracted from the first amount of light to obtain a theoretical subtracted value (Ln); the theoretical subtracted value (Ln) is subracted from an actual amount of light transmitted through one sheet to obtain an actual reference value; and an actual amount of light transmitted through a current sheet is compared with the actual reference value to perform double sheet detection.

公开(公告)号：EP0195105B1

公开(公告)日：1988-10-26

申请号：EP85103326.6

申请日：1985-03-21

申请人： Komori Printing Machinery Co., Ltd.

发明人： Watanabe, Hideo

IPC分类号： B65H7/12

CPC分类号： B65H11/00 ,  B65H5/24 ,  B65H7/125 ,  B65H2801/21

公开(公告)号：EP0195105A1

公开(公告)日：1986-09-24

申请号：EP85103326.6

申请日：1985-03-21

申请人： Komori Printing Machinery Co., Ltd.

发明人： Watanabe, Hideo

IPC分类号： B65H7/12

CPC分类号： B65H11/00 ,  B65H5/24 ,  B65H7/125 ,  B65H2801/21

摘要： A double sheet detection method and apparatus for a sheet-fed rotary press is proposed wherein a theoretical reference value (L) is set as a difference between an intermediate value (M) between a first theoretical amount of light transmitted through one sheet (Line A) and a second theoretical amount of light transmitted through two sheets (Line B) and the first theoretical amount of light (Line A); the theoretical reference value is stored in correspondence with the amount of light transmitted through a sheet; a difference is calculated between an amount of light transmitted through an nth sheet and an amount of light transmitted through an (n+1 )th sheet when actual printing is performed; the theoretical reference value which corresponds to the amount of light transmitted through the nth sheet and which is defined as an actual reference value is read out; the difference calculated when actual printing is performed is compared with the actual reference value; and double sheet detection is performed in accordance with a comparison result.