GB2139955A - Preventing unauthorised copying - Google Patents

Preventing unauthorised copying Download PDF

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Publication number
GB2139955A
GB2139955A GB08412989A GB8412989A GB2139955A GB 2139955 A GB2139955 A GB 2139955A GB 08412989 A GB08412989 A GB 08412989A GB 8412989 A GB8412989 A GB 8412989A GB 2139955 A GB2139955 A GB 2139955A
Authority
GB
United Kingdom
Prior art keywords
accordance
ink
wavelength
visible
light
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
GB08412989A
Other versions
GB2139955B (en
GB8412989D0 (en
Inventor
Daniel Vincent Mccaughan
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
General Electric Co PLC
Original Assignee
General Electric Co PLC
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority claimed from GB838314062A external-priority patent/GB8314062D0/en
Application filed by General Electric Co PLC filed Critical General Electric Co PLC
Priority to GB08412989A priority Critical patent/GB2139955B/en
Publication of GB8412989D0 publication Critical patent/GB8412989D0/en
Publication of GB2139955A publication Critical patent/GB2139955A/en
Application granted granted Critical
Publication of GB2139955B publication Critical patent/GB2139955B/en
Expired legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41M—PRINTING, DUPLICATING, MARKING, OR COPYING PROCESSES; COLOUR PRINTING
    • B41M3/00—Printing processes to produce particular kinds of printed work, e.g. patterns
    • B41M3/06—Veined printings; Fluorescent printings; Stereoscopic images; Imitated patterns, e.g. tissues, textiles
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41M—PRINTING, DUPLICATING, MARKING, OR COPYING PROCESSES; COLOUR PRINTING
    • B41M3/00—Printing processes to produce particular kinds of printed work, e.g. patterns
    • B41M3/14—Security printing
    • B41M3/144—Security printing using fluorescent, luminescent or iridescent effects
    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03C—PHOTOSENSITIVE MATERIALS FOR PHOTOGRAPHIC PURPOSES; PHOTOGRAPHIC PROCESSES, e.g. CINE, X-RAY, COLOUR, STEREO-PHOTOGRAPHIC PROCESSES; AUXILIARY PROCESSES IN PHOTOGRAPHY
    • G03C5/00—Photographic processes or agents therefor; Regeneration of such processing agents
    • G03C5/08—Photoprinting; Processes and means for preventing photoprinting
    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03G—ELECTROGRAPHY; ELECTROPHOTOGRAPHY; MAGNETOGRAPHY
    • G03G21/00—Arrangements not provided for by groups G03G13/00 - G03G19/00, e.g. cleaning, elimination of residual charge
    • G03G21/04—Preventing copies being made of an original
    • G03G21/046—Preventing copies being made of an original by discriminating a special original, e.g. a bank note

Abstract

In a method of preventing unauthorised copying of documents or the like each sheet is preprinted or overprinted with a normally barely visible or non-visible dye which fluoresces when copied, unless a "copyright fee paid" button of a special copying machine is pressed to effect illumination of documents for copying without stimulating the dye.

Description

SPECIFICATION Copying machines The present invention relates to copying machines and to the control of copying of copyright material.
In particular the invention is concerned with the control of copying of copyright material in the form of documents, drawings, pages of literary works, manuscripts or the like, hereinafter for convenience collectively referred to as documents and the like.
Much material of this form embodies appreciable artistic endeavour or drafting skill and effort, and the owners of the copyright in this material naturally wish to enforce their rights as far as possible.
However, the widespread use of photocopying and plain-paper copying machines presently permits virtually unrestricted copying of such material without payment of appropriate copying fees.
According to one aspect of the present invention a method of preparing copyright material for the control of copying thereof, comprises printing each page or sheet of said copyright material with a transparent ink either barely or not visible to the unaided eye, this ink having a constituent which emits light of a wavelength or wavelengths within the visible spectrum when stimulated by radiation of shorter wavelength.
Preferably said radiation of shorter wavelength is within the spectrum of light sources used in conventional reprographic copying machines.
The ink may substantially cover an area or the whole surface of each sheet, or may be printed in a form of words such as "illegally copied" or "copyright material".
According to another aspect of the invention in a copying machine for making copies of copyright material in the form of documents and the like inicuding a light source for illuminating the document or the like to be copied, said light source is arranged to have selectively one of two differing spectral energy distributions in dependence upon the condition of a manually operable control, such that a transparent ink having a constituent which emits light of a wavelength or wavelengths indicated within the visible spectrum when stimulated by radiation of shorter wavelength, which ink may be deposited on a page or sheet of said material to be copied so as normally to be either barely visible or not visible to the unaided eye, is selectively stimu lated or not, so as to affect copies of that page or sheet of material, in dependence upon the condition of said control.
The light source may comprise two or more lamps of different types energisable selectively to obtain said differing spectral energy distributions. Alternatively said light source may be provided with a filter which selectively may be interposed between one or more lamps and the material to be copied.
The said consituent of the ink may be a fluorescent dye which emits light towards the longer wavelength end of the visible spectrum when stimulated by light of below a critical wavelength. The filter, which would be arranged to substantially cut off light of said critical wavelength or below, may be interposed or not in dependence upon a "copyright fee paid" button or control.
Thus when the fee is paid, or at least its payment acknowledged, the fluorescent dye will not be activated, and the normally transparent ink marking will not appear on the copy of the prepared original.

Claims (9)

1. A method of preparing copyright material for the control of copying thereof comprising printing each page or sheet of said copyright material with a transparent ink either barely visible or not visible to the unaided eye, this ink having a constituent which emits all light of a wavelength or wavelengths within the visible spectrum when stimulated by radiation of shorter wavelength.
2. A method in accordance with Claim 1 where said radiation of shorter wavelength is within the spectrum of light sources used in conventional reprographic copying machines.
3. A method in accordance with Claim 1 or Claim 2 wherein the ink substantially covers an area or the whole surface of each sheet.
4. A method in accordance with Claim 1 or Claim 2 wherein the ink is printed in the form of words.
5. A copying machine for making copies of copyright material in the form of documents and the like inicuding a light source for illuminating the document or the like to be copied, wherein said light source is arranged to have selectively one of two differing spectral energy distributions upon the condition of a manually operable control, such that a transparent link having a constituent which emits light of a wavelength or wavelengths within the visible spectrum when stimulated by radiation of shorter wavelength, which ink may be deposited on a page of said material to be copied so as normally to be either barely visible or not visible to the naked eye, is selectively stimulated or not, so as to affect copies made of that page or sheet of material, in dependence upon the condition of said control.
6. A copying machine in accordance with Claim 5 wherein the light source comprises two or more lamps of different types energisableto obtain said differing spectral energy distributions.
7. A copying machine in accordance with Claim 5 wherein said light source may be provided with a filter which selectively may be interposed between one or more lamps and the material to be copied.
8. A copying machine in accordance with Claim 7 wherein the consituent of the ink is a fluorescent dye which emits light towards the longer wavelength end of the visible spectrum when stimulated by light below a critical wavelength, and the filter is arranged to substantially cut off light of said critical wavelength or below.
9. A copying machine in accordance with Claim 7 or Claim 8 wherein the filter is selectively interposed in dependence upon a copyright fee paid" button or control.
GB08412989A 1983-05-20 1984-05-21 Preventing unauthorised copying Expired GB2139955B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB08412989A GB2139955B (en) 1983-05-20 1984-05-21 Preventing unauthorised copying

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB838314062A GB8314062D0 (en) 1983-05-20 1983-05-20 Copying machines
GB08412989A GB2139955B (en) 1983-05-20 1984-05-21 Preventing unauthorised copying

Publications (3)

Publication Number Publication Date
GB8412989D0 GB8412989D0 (en) 1984-06-27
GB2139955A true GB2139955A (en) 1984-11-21
GB2139955B GB2139955B (en) 1987-03-04

Family

ID=26286196

Family Applications (1)

Application Number Title Priority Date Filing Date
GB08412989A Expired GB2139955B (en) 1983-05-20 1984-05-21 Preventing unauthorised copying

Country Status (1)

Country Link
GB (1) GB2139955B (en)

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4739377A (en) * 1986-10-10 1988-04-19 Eastman Kodak Company Confidential document reproduction method and apparatus
EP0373868A2 (en) * 1988-12-12 1990-06-20 Xerox Corporation Electrophotographic method
EP0385170A2 (en) * 1989-03-02 1990-09-05 Francotyp-Postalia GmbH Discernment process between original prints and copies
EP0385171A2 (en) * 1989-03-02 1990-09-05 Francotyp-Postalia GmbH Process for the characterisation of original prints
EP0428828A2 (en) * 1989-11-21 1991-05-29 Bayropa Jung Gmbh Process for the detection of copies
EP0493961A2 (en) * 1990-12-31 1992-07-08 Xerox Corporation Method of storing information
EP0539974A1 (en) * 1991-11-01 1993-05-05 " Egged" Israel Transport Cooperative Society Ltd. Method for preventing color copying of documents
EP0649074A1 (en) * 1993-10-18 1995-04-19 Xerox Corporation A system and method to measure and accrue copyright royalties
GB2310826A (en) * 1996-03-04 1997-09-10 Meriden Paper Ltd Photocopy detection of till receipts using light-coloured ink
DE4490351C2 (en) * 1993-01-28 2001-12-13 Ricoh Kk Image reading device with a differentiation device for specific documents

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2107646A (en) * 1978-10-18 1983-05-05 Gao Ges Automation Org A printed security with hallmarks
GB2122545A (en) * 1982-06-26 1984-01-18 Coated Papers Limited Security paper

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2107646A (en) * 1978-10-18 1983-05-05 Gao Ges Automation Org A printed security with hallmarks
GB2122545A (en) * 1982-06-26 1984-01-18 Coated Papers Limited Security paper

Cited By (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4739377A (en) * 1986-10-10 1988-04-19 Eastman Kodak Company Confidential document reproduction method and apparatus
EP0373868A2 (en) * 1988-12-12 1990-06-20 Xerox Corporation Electrophotographic method
EP0373868A3 (en) * 1988-12-12 1992-04-15 Xerox Corporation Electrophotographic method
US5064221A (en) * 1989-03-02 1991-11-12 Francotyp-Postalia Gmbh Method for distinguishing printed originals from copies
EP0385171A3 (en) * 1989-03-02 1990-11-28 Francotyp-Postalia GmbH Process for the characterisation of original prints
EP0385170A3 (en) * 1989-03-02 1990-12-05 Francotyp-Postalia GmbH Discernment process between original prints and copies
EP0385171A2 (en) * 1989-03-02 1990-09-05 Francotyp-Postalia GmbH Process for the characterisation of original prints
EP0385170A2 (en) * 1989-03-02 1990-09-05 Francotyp-Postalia GmbH Discernment process between original prints and copies
EP0428828A2 (en) * 1989-11-21 1991-05-29 Bayropa Jung Gmbh Process for the detection of copies
EP0428828A3 (en) * 1989-11-21 1991-08-14 Bayropa Jung Gmbh Process for the detection of copies
EP0493961A2 (en) * 1990-12-31 1992-07-08 Xerox Corporation Method of storing information
EP0493961B1 (en) * 1990-12-31 1997-03-05 Xerox Corporation Method of storing information
EP0539974A1 (en) * 1991-11-01 1993-05-05 " Egged" Israel Transport Cooperative Society Ltd. Method for preventing color copying of documents
DE4490351C2 (en) * 1993-01-28 2001-12-13 Ricoh Kk Image reading device with a differentiation device for specific documents
EP0649074A1 (en) * 1993-10-18 1995-04-19 Xerox Corporation A system and method to measure and accrue copyright royalties
GB2310826A (en) * 1996-03-04 1997-09-10 Meriden Paper Ltd Photocopy detection of till receipts using light-coloured ink
GB2310826B (en) * 1996-03-04 1999-09-29 Meriden Paper Ltd Improvements relating to the prevention of fraud

Also Published As

Publication number Publication date
GB2139955B (en) 1987-03-04
GB8412989D0 (en) 1984-06-27

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Legal Events

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PCNP Patent ceased through non-payment of renewal fee