In the late 1850’s ink manufacturers developed the first synthetic inks. These inks are a pigment based ink and there for do not have the acid associated with the earlier inks. Some of the modern inks are also water soluble. As water soluble inks were the first to be developed and more widely used they have over time become cheaper and cheaper. In time they even became cheaper than the acid inks used earlier by newspapers so much more attractive to newspapers trying to keep there costs down. However if newspapers printed with these modern inks are used to clean windows the newspaper will leave an inky film all over your windows. This brings us back to the original question. Can you use newspapers to clean windows for a streak free shine? The answer is you use to be able to use newspapers to clean windows but not any more. As for the streak free shine part I sincerely doubt it.