Recording sheet

Claim 1

A recording sheet comprising a support having thereon a microcapsule layer containing a color former said sheet not containing a color developer wherein at least one of said support or said microcapsule layer contains a desensitizing agent, said agent being a liquid which is substantially nonvolatile at ordinary temperature selected from the group of compounds consisting of the compounds represented by the general formula (I) ##STR9## wherein R is a hydrocarbon group containing 12 to 18 carbon atoms, and x and y are integers, and x + y is about 10 to 20; the compounds represented by general formula (II) ##STR10## wherein R is a hydrocarbon group containing 12 to 18 carbon atoms, and x 1 and y 1 are integers and x 1 + y 1 is about 10 to 30; the compounds represented by general formula (III) ##STR11## wherein x 2 is an integer of from about 10 to 30; the compounds represented by general formula (IV) ##STR12## wherein n is an integer of from 2 to 6, and p,q,r, and s are integers and p + q + r + s is about 10 to 60; ##STR13## wherein R 1 is a hydrogen atom or an alkyl group, and R 2 and R 3 are straight chain or branched chain alkylene groups containing 1 to 6 carbon atoms; the compounds represented by general formula (VI) ##STR14## wherein n 2 is an integer of from about 1 to 30; the compounds represented by general formula (VII) ##STR15## wherein R 4 is a hydrocarbon having 12 to 18 carbon atoms, and x 3 and y 2 are integers and x 3 + y 2 is about 50; glycols; dimers or trimers of unsaturated fatty acids; polyamide resins having molecular weights of from about 3,000 to 10,000, and said agent being present in an amount of about 30 mg/m 2 to 100 mg/m 2 of the support.