Frank V Parenti

US Patent:

52504921, Oct 5, 1993

Filed:

Mar 7, 1991

Appl. No.:

7/666194

Inventors:

Mark D. Dotson - Dayton OH
Frank V. Parenti - Dayton OH

Assignee:

The Standard Register Company - Dayton OH

International Classification:

B41M 5132

US Classification:

503201

Abstract:

Carbonless coating compositions which can be printed onto one or more sheets of a business form or mailer to provide a visible image which is sharper and darker than previous coatings are provided. The compositions also find use on security documents and safety papers to provide a covert image on the document beneath information which may be subject to attempted alteration, such as the amount written on a check. The covert image becomes visible upon the application of pressure or solvent in the area coated to provide evidence of the attempted alteration. The self-contained composition includes an admixture of a color former, a color developer, and a plurality of pressure-rupturable microcapsules containing a solvent. Another solvent-sensitive composition includes an admixture of a color former and a color developer.

US Patent:

51698269, Dec 8, 1992

Filed:

Oct 26, 1990

Appl. No.:

7/604808

Inventors:

Michael E. Seitz - Miamisburg OH
Frank V. Parenti - Kettering OH

Assignee:

The Standard Register Company - Dayton OH

International Classification:

B41M 5132

US Classification:

503207

Abstract:

A CF ink and process which can be applied to a support sheet by standard transfer-litho press is provided. The nonvolatile printing ink which is capable of color development may be used to produce a CF carbonless copy sheet, or, in combination with a high solids, aqueous-based CB ink, to produce a CFB carbonless copy sheet. The ink includes from about 25 to 35% of a non-volatile oil, 25 to 35% of an acidic color developer, 20 to 50% filler, and 4 to 15% dispersed wax particles, all percentages by weight.

US Patent:

43605486, Nov 23, 1982

Filed:

Oct 24, 1980

Appl. No.:

6/200449

Inventors:

Hugh B. Skees - Dayton OH
Frank V. Parenti - Dayton OH

Assignee:

The Standard Register Company - Dayton OH

International Classification:

B44F 110

US Classification:

428 29

Abstract:

A hidden image, which can be made detectable by rubbing, is produced by applying to a substrate surface a first ink-like material in image configuration, then applying a second ink-like material to cover the image and an area surrounding the image. Each of the first and second ink-like materials contain one of a color-forming pair of reactants which are colorless or light colored in their unreacted states, but which together produce a colored product when brought into reactive contact. Separation of the two reactants is assured by encapsulating at least one of the reactant pair. Reactive contact is caused by rubbing the printed area or otherwise applying sufficient pressure to rupture the capsules, releasing one of the reactants into intimate contact with the other reactant.