Computer Paper, Size- 12 inch x 11 inch- 2 part., 30. 5 x 27. 9 cms., 70 GSM, IS. No. 12766/ 97. Specification: 1 ] Paper- 70 GSM IS No. 12766/ 97. 2 ] Carbon Paper Quality- Base paper shall be type- A to IS 9055/ 79 with amendment 1. The base paper shall be coated on one side with suitable carbon ink necessary to give the required manifolding characteristics. The coating shall be smooth, uniform and free from smudginess and tendency to separate as flakes when used. Mass coating shall be 6 plus 1 gm/ sq. m. manifolding characteristics [ minimum no. of legible carbon copy ] = 1 No.