In addition, there are requirements for the degree of whiteness of the paper and the content of resins: the process of printing sheets are heated, evaporation and resin can significantly damage the computer equipment. In Therefore, office paper is divided into three main categories: A, B and C. The other paper grades are writing, and work on office equipment is not suitable. Category A is given by the premium carbon paper. It homogeneous, contains no tar substances and has a high degree of whiteness of 95-98%.
This paper applies to all types of office equipment and provides excellent results in both unilateral and with bilateral copying or printing. C A working paper category is arbitrary, capricious, even the equipment. Category B – the most common and suitable for most printing technologies. It is convenient to print and copy the references of the office. Not "Upper class", but the technique of conflict usually arise. Whiteness in the category of 92 to 95%. Category C – paper with a minimum set of characteristics that guarantee the efficiency of office equipment. It usually print a "draft" documents, quality requirements are low.
Whiteness index of such securities does not exceed 92%. How to store office paper Office paper is sold in packs of 500 sheets, and those in their all packaged in hard cardboard boxes that protect the corners and edges of the strains. Such precautions are not random: only nezamyatymi sheet printers and copiers will work without problems. Delivered to the office to retrieve the paper from the box and give it to ripen in the "local" conditions. The optimum temperature and humidity in the room to store paper must comply with 19-23 C and 45-55%. In winter adapting to the conditions of the office would take about three days, and in summer the weather is dry, you can proceed to print the next day. Proper storage of paper for printing is the key to successful work with the office equipment. Otherwise, problems can arise even with the production of well-known, time-tested brands.