Film sucking means for adjustable optical plotter

Application Number: 00107458
Application Date: 2000.05.16
Publication Number: 1324001
Publication Date: 2001.11.28
Priority Information:
International: G03B27/64
Applicant(s) Name: Tang Hui
Inventor(s) Name: Tang Hui
Patent Agency Code: 00000
Patent Agent:
Abstract An adjustable absorption device for the film of light drawing machine consists of outer rotary drum, inner rotary drum, adjusting rod and air suction pipe as outer drum punched and distributed uniformly with the same size holes and inner drum punched with different size holes in different zones. According to the cover zone of the film on the rotary drum to adjust the adjusting rod for moving inner drum position to let the holes of outer drum pass through with the holes of inner drum at the film covered zone and be blocked the other zones with no air leakage, the film will be firmly absorbed on the drum when different size of films are used for light drawing.