On and after January 1, 1991, every consumer of newsprint in California shall ensure that at least 25 percent of all newsprint used by that consumer of newsprint is made from recycled-content newsprint, if recycled-content newsprint is available at a price comparable to that of newsprint made from virgin material, if the recycled-content newsprint meets the quality standards established by the board pursuant to Section 42775, and if the recycled-content newsprint is available within a reasonable period of time.