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1. WO1991006070 - ELECTRONIC IMAGE LIFT

유의사항: 이 텍스트는 자동적으로 광학문자인식(OCR) 처리된 텍스트입니다. 법적 용도로는 PDF 버전을 사용하십시오.

What is claimed is:

1. A document processing system wherein documents are to be transported at high speed along a prescribed transport path past a pair of offset image-lift sites, this system comprising:

Transport means for continuously transporting documents past said sites at high speed, and without pause; energy-source means for directing lift-energy at both said sites, in parallel; energy- conveying means between said source and the sites; gating means, one disposed at each of said sites, each acting to channel lift data there; and heat-dissipation means disposed operatively adjacent said source means and acting to extract light energy therefrom and dissipate it so as to shield the said sites and said conveying means from adverse light effects.

2. The invention of claim 1 wherein said conveying means are, essentially identical, each being adapted to operate on one side of each document as it passes a respective one of said sites.

3. The invention of claim 2 wherein each site is adapted for use on a respective Front, Rear side of a passing document.

4. The invention of claim 3 wherein said sites comprise glass-filled slits dimensioned to operate on the contemplated data-portions of the documents.

5. The invention of claim 4 wherein the heat-dissipation means includes a selectively-operable shutter means for directing all the energy projected from the source means to a dissipation-dump means, under prescribed "special conditions".

6. The invention of claim 5 wherein the dump means includes a finned, air-cooled heat-trap.

7. A document processing system as set forth in claim 1 wherein said energy-source means comprises a high-intensity spectral light source, and
means for extracting a substantial part of the infra-red (IR) light from said high-intensity spectral light source comprising:

Selective Reflector means and
associated IR-Dissipation means including Surface means in enclosure means, adapted to receive infrared beams and to unilaterally convert them to surface heat; this Surface means being arranged in an IR-trap configuration to receive IR from an input portion, allowing little, if any, spectral IR to emerge therefrom; the Reflector means being interposed across said beam path and adapted to divert only IR to said Dissipation means.

8. The invention of claim 7 wherein the Surface means comprises a pair of opposed sets of blades, the sets being disposed obliquely and
symmetrically about the center-line of IR-entry, each set comprising a number of like "black-body" blades arrayed in parallel and equidistant, while overlapping, to form one-half of a convergent, closed IR-entry chamber.
9. The invention of claim 8 wherein exhaust means is disposed at an open end of this enclosure means, opposite the IR-entry portion, the exhaust means being adapted and arranged to pull ambient air rapidly into one end of the enclosure means and expel it at the other end, drawing it past most, or all, of said Surface means blades.

10. The invention of claim 7 wherein a Second Reflector means is disposed operatively-adjacent the Source means, being arranged and adapted to be automatically shifted into full-beam-intercepting position at prescribed "Emergency-Times" whereby to divert all the Source radiation beam to said Dissipation means.

11. Invention of claim 10 wherein the Selective Reflector means is a "hot mirror".

12. Invention of claim 11 wherein a beam-blocking shutter means is disposed operatively adjacent the Selective Reflector means, being
arranged and adapted to be selectively, automatically interposed to block the entire beam and divert it to said IR-Dissipation means when "special conditions" occur.

13. A document processing system as set forth in claim 1 wherein said energy-source means comprises optical means for projecting a rectangular shaped beam of high-intensity spectral light
comprising: said optical means projecting a prescribed non-rectangular beam of spectral
radiation to a prescribed input-locus; a Bundle of prescribed optical fibers having a prescribed entry-face and a prescribed relatively rectangular exit-face, the entry face being disposed to receive said beam of radiation at said input-locus; the exit-face being arranged and adapted to so project said
rectangular beam onto said site; and fibres being so arranged between said faces as to randomize small discrete portions of said beam as received at said locus whereby to better distribute the radiation of each said portion relatively uniformly along said exit-face of the bundle.

14. Invention of claim 13 wherein the Source means projects a relatively-circular beam and said entry-face is relatively circular.

15. Invention of claim 14 where said entry-face has a diameter approximately equal to that of said beam when the beam is in sharpest-focus thereon.

16. Invention of claim 15 where said fibres are so randomized that a thin, opaque probe may be overlaid at any point along said exit-face so as to block all input-light thereto, yet will
produce, at said entry-face, only a random, separated array of tiny black-spots.

17. Invention of claim 16 wherein said fibres are so randomized that essentially any anomaly in the intensity, etc. of the beam will be uniformly distributed along said exit-face.

18. A document processing system as set forth in claim 1 which further includes,

single unit mount casting means adapted to be mounted straddling the document path and providing coupling apertures for mounting said casting means to said transport means,

said mounting casting means having coupling extensions for mounting and co-locating optical tower means, said energy source means and means for extracting a substantial part of the infrared (IR) light from said energy source means.

19. Invention of claim 18 wherein said transport means comprises document-imaging means; and the said mount-casting means provides isolation means for isolation thermally and optically from said imaging means.

20 Invention of claim 19 wherein the Source means comprises a single high-intensity lamp emitting a beam of spectral radiation; and optical components disposed into a pair of like illumination arrays, in said optical tower means one for
illuminating each side of the documents transported along said document path.

21. Invention of claim 20 which further includes a pair of like camera means are also
mounted on said casting, along with like respective imaging-path optical components.

22. Invention of claim 20 where said optical components effect a first-split of said radiation beam, and wherein two other like sets of optical components each effect a second-split of their illumination beam, whereby to provide a pair of like, oblique, symmetrical beams, one on each side of each passing document.

23. A document processing system as set forth in claim 1 wherein said energy-source means comprises imaging stations at said sites each having illumination-beam projection means comprising.

Beam-adjust/balance means comprising beam focus-means intercepting its beam and adapted to change its focal point; and a fiber-optic Array exhibiting a relatively circular entry-aperture of prescribed diameter Dc and an exit-face configured to illuminate the respective site quite uniformly, the fibres of the array being arranged and distributed, in uniform, random fashion completely across this exit-face;
said beam focus means being arranged and adapted to vary the focal-point of its beam and so change beam-diameter at said entry-aperture sufficient to spread its beam well beyond the
aperture and so controllably reduce the amount of the beam entering the Array.

24. Invention of claim 23 where each said beam focus means comprises an adjustable-focus lens means.

25. Invention of claim 24 wherein said beam focus means comprises a beam directed through a fibre-optic array, with a lens focusing the beam on each array such that a shift in lens-focus reduces output light from the array, the two sites being thus "matched" in light-intensity by merely focus- adjusting these lenses.

26. A document processing system as set forth in claim 1 wherein said energy source means comprises a high intensity spectral light source at said sites each having illumination-beam projection means and an associated optical illumination path array and further includes camera means having an associated optical image path array,

said image path array comprising photo-optic filter means adapted to shift the light spectrum of said spectral light source in the
direction of optimum human-eye response; and

said camera means being selected to exhibit a spectral response close to that of the human-eye response.

27. Invention of claim 26 where each said Camera means comprises "charge-coupled photo-diode" means CCPD.

28. Invention of claim 26 where a pair of like said illumination-path arrays are provided, one for Front illumination, one for the Rear.

29. Invention of claim 28 where each said illumination-path array conducts one of the beams so split to a respective Front or Rear side of the documents; and wherein each said path array further splits its illumination beam into two like sub-beams, these being directed to focus at a prescribed point, but being disposed at opposing, equal angles about this point.

30. Invention of claim 29 wherein each of the sub-beam pairs are offset about .+30° from the Normal to the documents.