US5271645A — Pigment/fluorescence threshold mixing method for …

Claim 1

Independent Claim 81 words

A document which is not accurately copyable by a photocopier comprising: a substrate which is a matte onto which indicia are printed; and indicia comprising a coating mixture including at least one pigment means and a fluorescence printing means in a quantity such that said mixture, when not yet dry, exhibits only a slight fluorescence under ultraviolet light, said fluorescence barely discernable to the naked eye; and, when cured on said matte, the mixture is not accurately replicable by the photocopier.

Claim 2

Dependent Claim 81 words

A document which is not accurately copyable by a photocopier comprising: a substrate which is a matte onto which indicia are printed; and indicia comprising a coating mixture including at least one pigment means and a fluorescence printing means in a quantity such that said mixture, when not yet dry, exhibits only a slight fluorescence under ultraviolet light, said fluorescence barely discernable to the naked eye; and, when cured on said matte, the mixture is not accurately replicable by the photocopier.

Claim 3

Dependent Claim 50 words

The document of claim 1 comprising a suitable matte and indicia comprised of the mixture printed on the matte in densities at or about 0.4, thereby inducing changes in a photocopier replication of said doucment ranging from flaring to color shifting as said density varies from below to above 0.4.

Claim 4

Dependent Claim 58 words

An improved method for making a photo-copyresistant document comprising: preparing a mixture of printing pigement and a fluorescence compound, in the presence of ultra-violet light, only until a slight fluorescing begins, as discernable by the naked eye; printing the mixture onto a substrate so that upon drying of said printing pigment and said compound, said document is obtained.

Claim 5

Dependent Claim 58 words

An improved method for making a photo-copyresistant document comprising: preparing a mixture of printing pigement and a fluorescence compound, in the presence of ultra-violet light, only until a slight fluorescing begins, as discernable by the naked eye; printing the mixture onto a substrate so that upon drying of said printing pigment and said compound, said document is obtained.

Claim 6

Dependent Claim 22 words

The method of claim 3 wherein preparing further comprises adding only said mixture to additional pigment for the purposes of balancing density.

Claim 7

Dependent Claim 48 words

The method of claim 3 wherein preparing further comprises: mixing of a second mixture of a second printing pigment and said fluorescence compound according to said preparing step; and adding said second mixture to said claimed mixture to obtain a third mixture for use in said printing step.

Claim 8

Dependent Claim 63 words

A photocopier nonreplicable document comprising a substrate at least partially coated with a mixture of printing pigment and fluorescence compound, said mixture in a pigment-fluorescence balance that fluoresces only slightly under ultraviolet radiation when the mixture is wet and ceases to fluoresce when dried, the docuent exhibiting flaring and/or color shifting respectively between print desnities slightly below and above about 0.4 when photocopied.

Claim 9

Dependent Claim 63 words

A photocopier nonreplicable document comprising a substrate at least partially coated with a mixture of printing pigment and fluorescence compound, said mixture in a pigment-fluorescence balance that fluoresces only slightly under ultraviolet radiation when the mixture is wet and ceases to fluoresce when dried, the docuent exhibiting flaring and/or color shifting respectively between print desnities slightly below and above about 0.4 when photocopied.

Claim 10

Dependent Claim 91 words

An improved method for making a photocopy resistant document comprising: mixing to a threshold a pigment which is to be part of a desired print stuff mixture with a fluorescence compound; observing said mixing in the presence of fluorescence-activating ultraviolet radiation, said mixing being carried out only until a threshold is reached at about which a slight fluorescing occurs as discerned by the naked eye, thereby obtaining said print stuff mixture; and printing said print stuff mixture onto a substrate, thereby acquiring said document upon curing of said print stuff mixture.

Claim 11

Dependent Claim 91 words

An improved method for making a photocopy resistant document comprising: mixing to a threshold a pigment which is to be part of a desired print stuff mixture with a fluorescence compound; observing said mixing in the presence of fluorescence-activating ultraviolet radiation, said mixing being carried out only until a threshold is reached at about which a slight fluorescing occurs as discerned by the naked eye, thereby obtaining said print stuff mixture; and printing said print stuff mixture onto a substrate, thereby acquiring said document upon curing of said print stuff mixture.

Annuity Stage	Window Opens	Payment Deadline	Surcharge Period Until	Estimated Fee	Status
3.5 Years (Year 4)	1996-12-20	1997-06-21	1997-12-21	$2000.00	Window Closed / Lapsed
7.5 Years (Year 8)	2000-12-20	2001-06-21	2001-12-21	$3760.00	Window Closed / Lapsed
11.5 Years (Year 12)	2004-12-20	2005-06-21	2005-12-21	$7700.00	Window Closed / Lapsed

Pigment/fluorescence threshold mixing method for printing photocopy-proof document

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