Minnesota Mining and Manufacturing Company

Rex J Dalzell

George V Tiers

Steven M Aasen

Brian N Holmes

Edward J Goettert

Improved correction fluid for obscuring indicia on sheet material. Such fluid, which normally comprises a solution of pigmented thermoplastic resin, is rendered capable of obscuring typed, xerographically copied, or written ink indicia by using a solvent system having a refractive index of 1.410 or less. A preferred non-flammable system includes 20-40 volume percent 1,1,2-trichlorotrifluoroethane and correspondingly 80-60 volume percent heptane.

Nonsmearing correction fluid

Light sensitive systems comprising a tetra(hydrocarbyl)borate and a dye may be used in the form of a dispersion, with the light sensitive borate and dye in one phase which is dispersed within a second phase.

Dispersed imaging systems with tetra (hydrocarbyl) borate salts

Imaging systems comprising a tetra(hydrocarbyl)borate and a bleachable dye may be rendered desensitizable by the inclusion of a second bleachable dye which absorbs radiation in a different portion of the electromagnetic spectrum than the first bleachable dye.

Fixing of tetra(hydrocarbyl)borate salt imaging systems

A method for forming an image includes the step of desensitizing a radiation sensitive imaging system comprising a dye and a tetra (hydrocarbyl) borate in a binder by converting the tetra (hydrocarbyl) borate to a compound having fewer than four carbon-to-boron bonds.

Fixing of tetra (hydrocarbyl) borate salt imaging systems

A radiation sensitive element comprising a substrate having coated on at least one side thereof a layer comprising a radiation sensitive tetra(aliphatic) borate salt.

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Somerset, WI, United States of America

Rex J Dalzell