Confidential document reproduction prevention method

Details Confidential document reproduction prevention method Confidential document reproduction prevention method

1983-04-14

1986-05-06

Moses, R. L.

Photocopying

Projection printing and copying cameras

Combined with or convertible to a contact printer

355 3R, 355 77, 355133, G03G 1500

Patent

active

045868115

ABSTRACT:
A confidential document reproduction prevention method of preventing confidential documents from being reproduced. This method is carried out by applying a particular material as a confidential mark at least to one portion of the surface of a confidential document, which material, when exposed to illumination light, is capable of emitting light with a wavelength different from the wavelength of the illumination light; detecting the light emitted from the material by a detector in a reproduction machine when the document is exposed to the illumination light; and making the reproduction machine inoperative, upon detection of the light emitted from the material.

REFERENCES:
patent: 3713861 (1973-01-01), Sharp
patent: 3852088 (1974-12-01), Godlewski et al.
patent: 3887742 (1975-06-01), Reinnagel
patent: 3977785 (1976-08-01), Harris
patent: 4025673 (1977-05-01), Reinnagel
patent: 4118122 (1978-10-01), Rees et al.
patent: 4281921 (1981-08-01), Van Auken
patent: 4456373 (1984-06-01), Best
IBM Tech. Disc. Bull., "No-Copy Attachment for Copier", vol. 17, No. 11, Apr. 1975, p. 3434.
IBM Tech. Disc. Bull., "Unauthorized Copy Prevention", vol. 15, No. 12, May 1973, p. 3642.
IBM Tech. Disc. Bull., "Copier System for Confidential Papers", vol. 15, No. 7, Dec. '72, p. 2328.
IBM Tech. Disc. Bull., vol. 18, No. 4, p. 1002, "Secure Document Feature for Copy Machines", Sep. '75.
IBM Tech. Disc. Bull., "Secure Document Feature for Copy Machines", vol. 15, No. 9, Feb. '73, p. 2736.
IBM Tech. Disc. Bull. "Copier Security System", vol. 18, No. 6, Nov. '75, p. 1747.
IBM Tech. Disc. Bull., "Gradiometer Document Detector for Copy Security", vol. 16, No. 6, Nov. '73, p. 1951.
IBM Tech. Disc. Bull., "Unauthorized Copy Prevention", vol. 18, No. 1, Jun. '75, p. 59.
IBM Tech. Disc. Bull., "Secure Document Feature for Copy Machines", vol. 18, No. 4, Sep. '75, p. 10.
IBM Tech. Disc. Bull., "Copier Incorporating Document Detection System", vol. 15, No. 7, Dec. '72, p. 2231.
IBM Tech. Disc. Bull., "Secure Document Feature for Copy Machines", vol. 17, No. 11, Apr. '75, p. 3198.
IBM Tech. Disc. Bull., vol. 17, No. 11, Apr. '75, p. 3182, "Copier Document Security".
IBM Tech. Disc. Bull., vol. 15, No. 2, Jul. '72, p. 453, "Secure Document Feature for Copy Machines".
IBM Tech. Disc. Bull., "Document Copy Prevention", vol. 18, No. 6, Nov. '75, p. 1717.
IBM Tech. Disc. Bull., vol. 18, No. 3, Aug. '75, "Copier Security System", p. 912.
IBM Tech. Disc. Bull., "Preventing Copying of Classified Information", vol. 19, No. 4, Sep. '76, p. 1469.
IBM Tech. Disc. Bull., "Document Security", vol. 20, No. 1, Jun. '77, p. 20.
IBM Tech. Disc. Bull., "Document Copying Inhibitor Method", vol. 17, No. 12, May '75, p. 3786.
IBM Tech. Disc. Bull., vol. 26, No. 5, Oct. '83, p. 2319, "Anti-Copy Paper".
IBM Tech. Disc. Bull., "Document Security for Copiers", vol. 19, No. 9, Feb. '77, p. 3293.

Affiliated with

Also associated with

Rating

Confidential document reproduction prevention method does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Confidential document reproduction prevention method, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Confidential document reproduction prevention method will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1571863