The urgency of office paper and its advantages over electronic media. Despite the widespread use of electronic media, office paper has not lost its relevance: many kinds of documentation continues to be duplicated on paper. In addition, the printed text can be viewed or study in virtually any environment – in transport on the way home or when traveling on business, outdoors or in rooms not equipped with a computer. On boxes of paper documents comfortably to make notes, and the eyes when reading from a sheet tired considerably less than the perception of information from the screen. Besides, most of the treaties and agreements are still printed on the office paper and sealed with the signatures of both parties concerned. As experience shows, the level of paper consumption in our age of universal computerization is not reduced, and every year is rising, and, increasingly noticeable. Of course, more convenient to have all the necessary information for yourself and not depend on a number of personal computer or laptop. Paper quality. Quality of the paper and its suitability for use on various types of office equipment is estimated by the following criteria: – density (optimal 80-90g/m2) – thickness (the thicker the paper, the harder) – opacity (depends on the density and is particularly important when two-sided printing) – smooth (affects image quality) – humidity (optimum 4.5%, but slight variations are permissible) – curl (lower residual deflection of the sheet after printing, the better) – trim (edges should be smooth and free of dust and burrs) – conductivity (the higher the value, the worse the press);-electrified (leads to the bonding sheets and disruptions in their supply) Requirements for the paper for various office equipment.