Optical paper sorting method device and apparatus

Details Optical paper sorting method device and apparatus Optical paper sorting method device and apparatus

2006-07-25

2006-07-25

Rodriguez, Joseph C. (Department: 3653)

Classifying, separating, and assorting solids

Sorting special items, and certain methods and apparatus for...

Condition responsive means controls separating means

C209S587000

Reexamination Certificate

active

07081594

ABSTRACT:
An optical paper sorting system uses diffuse reflectance to identify a sheet of paper, conveyed on a conveyor, as either white or groundwood grade. A light source illuminates a sheet of paper and an optical collection system collects and filters the light diffusely reflected from the sheet of paper. The reflected light strikes a detector which produces a photoelectric current proportional to the intensity of the filtered light in a specific region in the electromagnetic spectrum, preferably ultraviolet. The signal from the detector may be digitized and processed by a computer which classifies the sheet as either white or groundwood, and activates an ejection device to produce an air blast for diverting whichever grade is selected for ejection.

REFERENCES:
patent: 3650400 (1972-03-01), Warren et al.
patent: 3994602 (1976-11-01), Howarth
patent: 4644163 (1987-02-01), Selander
patent: 4715715 (1987-12-01), Howarth et al.
patent: 5220172 (1993-06-01), Berthold et al.
patent: 5260584 (1993-11-01), Popson et al.
patent: 5398818 (1995-03-01), McGarvey
patent: 5640463 (1997-06-01), Csulits
patent: 5862919 (1999-01-01), Eason
patent: 5899959 (1999-05-01), Shields et al.
patent: 6052177 (2000-04-01), Millar et al.
patent: 6335501 (2002-01-01), Khalfan
patent: 6570653 (2003-05-01), Bruner et al.
patent: 2002/0134522 (2002-09-01), Karlsson et al.

Affiliated with

Also associated with

Rating

Optical paper sorting method device and apparatus does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Optical paper sorting method device and apparatus, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Optical paper sorting method device and apparatus will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-3562725