Light sensitive jet inks
First Claim
1. A process for information recording comprising producing a fine jet of liquid containing a diazo light sensitive material, modulating the charge density of the jet by applying an electric field in accordance with the information to be recorded, directing the jet of liquid to a recording medium to record said informtion, and thereafter subjecting said recorded information to ultraviolet light, thereby rendering the information visible.
3 Assignments
0 Petitions
Accused Products
Abstract
Light sensitive ink compositions suitable for ink jet printing on metal, plastic, or paper surfaces, the ink characterized by opaque properties in light, incorporating in solution, at least one diazo derivative and at least one solvent.
According to another of its aspects, this invention is a process for information recording comprising producing a fine jet of liquid containing at least one diazo derivative, directing said jet of liquid onto a recording medium, modulating the density of said applied jet by an electric field in accordance with the information to be recorded, thereby recording said information, and thereafter applying ultraviolet light to said recording medium bearing said recorded information, thereby rendering said recording opaque.
63 Citations
10 Claims
- 1. A process for information recording comprising producing a fine jet of liquid containing a diazo light sensitive material, modulating the charge density of the jet by applying an electric field in accordance with the information to be recorded, directing the jet of liquid to a recording medium to record said informtion, and thereafter subjecting said recorded information to ultraviolet light, thereby rendering the information visible.
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5. A visibly colorless ink composition suitable for use in jet printing operations consisting essentially of a solution of the following components:
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a. a visibly colorless diazo containing composition which decomposes to form a visible material in ultraviolet light, said diazo composition being present in an amount below about 90 weight percent, and b. at least one solvent whereby the ink exhibits a viscosity of up to 25 cps. and exhibits a resistivity of up to 10,000 ohm-cm. - View Dependent Claims (6, 7, 8, 9, 10)
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Specification