Americans invented absolutely ordinary (from the first sight) light yellow paper, which can be used for a blueprint. The spirit of the invention is in the disappearance of the text or picture from the paper after a few hours.

Brinda Dalal from the research centre of the Xerox Company in Palo – Alto (PARC) calls her “garbologist” — from English words “garbage” and “anthropologist”. She has been anxious by extremely irrational use of natural resources for example, natural paper, for a long period time.

Brinda has made a research from which she has found out that 21 % of the printed during the day documents is found in a refuse bin. A lot of papers (documents) are very often thrown away just after their appearance from a printer. And 44,5 % of the whole number of papers is “a routine business” such as “plans for today”, drafts or letters for e – mail and other writings, which lost their actuality the next day.

“We were surprised at the results, — Dalal says. — Nobody pays attention to the ephemeral information which quickly disappears from a refuse bin”. Now Dalal with the help of the chemists and Xerox Research Center of Canada has elaborated experimental prototype of the office paper which can be used many times (repeatedly).