Claims
- 1. A document-imaging arrangement including two document-imaging stations, one for the Front, one for the Rear of the documents; where a pair of like said illumination-path arrays are provided, one for Front illumination, one for Rear illumination; 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; and where each said station comprises illumination-shaping slit means; the slit means being offset from one another sufficient to effectively avoid interference between Front and Rear illumination means including stable wavelength source means with an associated optical illumination-path array with the beam from said source means is split and sent to illuminate the Front and the Rear of each document advanced past said stations;
- image-lift means including electronic human-response camera means with response essentially that of the human eye and comprising CCPD means and an associated optical image-path array; this image path array including filter means adapted to shift the received spectrum toward the wavelengths of optimal camera response.
- 2. The invention of claim 1 wherein each of the sub-beam pairs are offset about .+-.30.degree. from the normal to the documents.
- 3. The arrangement of claim 1 wherein said source comprises fluorescent lamp means.
- 4. An arrangement for lifting check images from passing documents, comprising two check-imaging stations; one for the Front, one for the Rear of the documents; a pair of like said illumination-path arrays, one for Front illumination, one for Rear illumination; where each said illumination-path array conducts one of the beams so split to a respective Front or Rear side of the documents; and where each said station comprises illumination-shaping slit means; the slit means being offset from one another sufficient to effectively avoid interference between Front and Rear illumination;
- illumination-means for said stations including stable wavelength source means in an associated optical illumination-path array; where the beam from said source means is split and sent to illuminate the Front and the Rear of each document advanced past said stations; and
- image-lift means including electronic camera means, with an associated optical image-path array; said camera means being selected to exhibit a prescribed spectral response, plus filter means disposed upstream of the camera means and adapted to shift its received image-light spectrum to be closer to that which is optimal for the camera means.
- 5. The arrangement of claim 4, wherein the beam pairs are offset about .+-.30.degree. from the normal to the documents.
- 6. The arrangement of claim 4, wherein said source comprises fluorescent lamp means.
Parent Case Info
This is a Division of application Ser. No. 07/874,876 filed Apr. 28, 1992 now U.S. Pat. No. 5,259,043 which is in turn a Div. of U.S. Ser. No. 07/419,355 filed Oct. 10, 1989 now U.S. Pat. No. 5,155,776.
US Referenced Citations (14)
Divisions (2)
|
Number |
Date |
Country |
Parent |
874876 |
Apr 1992 |
|
Parent |
419355 |
Oct 1989 |
|