Method for desensitizing sensitized record sheets and resultant article

Claim 1

THE METHOD OF DESENSITZING A SELECTED AREA OF A SHEET HAVING A COATING THEREON OF A FIRST NORMALLY COLORLESS REACTANT CAPABLE OF REACTING WITH A SECOND NORMALLY COLORLESS REACTANT TO PRODUCE A DISTINT COLOR WHEN CHARACTER-FORMING PRESSURE IS APPLIED TO THE SHEET, SAID SECOND REACTANT BEING AN ELECTRON DONOR AROMATIC ORGANIC COMPOUND HAVING A DOUBLE BOND SYSTEM WHICH IS CONVERTIBLE TO A MORE HIGHLY POLARIZED CONJUGATED FORM UPON TAKING PART IN AN ELECTRON ACCEPTOR-DONOR SURFACE CHEMICAL REACTION, GIVING IT A DISTINCTIVE COLOR, SAID FIRST REACTANT BEING AN INORGANIC ADSORBENT SUBSTANCE WHICH IS AN ACID RELATIVE TO THE SECOND REACTANT SO AS TO BE AN ELECTRON ACCEPTOR WHEN IN ADSORPTION CONTACT GHEREWITH, THE INORGANIC ADSORBENT SUBSTANCE BEING HELD IN A BINDER IN SAID COATING, THE ORGANIC COMPOUND BEING CONTAINED IN THE ADSORBATE LAYER OF ENTRAPPED LIQUID DROPLETS WHICH ARE REPTURED WHEN THIS LAYER IS BROUGHT BY SAID PRESSURE INTO CONTACT WITH SAID COATING TO PRODUCE SAID CHEMICAL REACTION, SAID METHOD COMPRISING APPLYING TO THE SELECTED AREA OF SAID COATING A SALINE SOLUTION OF CRITRIC ACID AND AN OXIDZING BLEACH, AND DRYING SAID SOLUTION TO PRODUCE A DESENSITIZING FILM OVER THE SELECTED COATING AREA, THE CONSTITUENTS OF SAID FILM BEING IN SUCH PROPORTIONS AS TO NEUTRALIZE SAID CHEMICAL REACTION AND THEREBY INHIBIT THE PRODUCTION OF SAID COLOR.

Claim 2

THE METHOD OF DESENSITZING A SELECTED AREA OF A SHEET HAVING A COATING THEREON OF A FIRST NORMALLY COLORLESS REACTANT CAPABLE OF REACTING WITH A SECOND NORMALLY COLORLESS REACTANT TO PRODUCE A DISTINT COLOR WHEN CHARACTER-FORMING PRESSURE IS APPLIED TO THE SHEET, SAID SECOND REACTANT BEING AN ELECTRON DONOR AROMATIC ORGANIC COMPOUND HAVING A DOUBLE BOND SYSTEM WHICH IS CONVERTIBLE TO A MORE HIGHLY POLARIZED CONJUGATED FORM UPON TAKING PART IN AN ELECTRON ACCEPTOR-DONOR SURFACE CHEMICAL REACTION, GIVING IT A DISTINCTIVE COLOR, SAID FIRST REACTANT BEING AN INORGANIC ADSORBENT SUBSTANCE WHICH IS AN ACID RELATIVE TO THE SECOND REACTANT SO AS TO BE AN ELECTRON ACCEPTOR WHEN IN ADSORPTION CONTACT GHEREWITH, THE INORGANIC ADSORBENT SUBSTANCE BEING HELD IN A BINDER IN SAID COATING, THE ORGANIC COMPOUND BEING CONTAINED IN THE ADSORBATE LAYER OF ENTRAPPED LIQUID DROPLETS WHICH ARE REPTURED WHEN THIS LAYER IS BROUGHT BY SAID PRESSURE INTO CONTACT WITH SAID COATING TO PRODUCE SAID CHEMICAL REACTION, SAID METHOD COMPRISING APPLYING TO THE SELECTED AREA OF SAID COATING A SALINE SOLUTION OF CRITRIC ACID AND AN OXIDZING BLEACH, AND DRYING SAID SOLUTION TO PRODUCE A DESENSITIZING FILM OVER THE SELECTED COATING AREA, THE CONSTITUENTS OF SAID FILM BEING IN SUCH PROPORTIONS AS TO NEUTRALIZE SAID CHEMICAL REACTION AND THEREBY INHIBIT THE PRODUCTION OF SAID COLOR.