On the micro printer thermal paper making principle _ printing equipment problems

About micro printer production principle of thermal paper is powder coated particles on plain paper base, composition is colorless dye phenol or other acidic substances, with thin film apart, under the condition of heat, melt film, powder mixed chromogenic reaction, thermal paper on color's handwriting is not stable, easy to fade, cause it is difficult to identify the file content, thermal paper is placed above 70 ℃ environment, the thermosensitive coating began to change color. Miniature printer thermal paper generally divided into three layers, the bottom of paper base, the second floor for the thermal coating, the third layer of protective layer, mainly affects the micro printer to print and the quality of preservation is thermal coating or coating. Now have more long-term thermal paper can save ten years, but if the thermal coating formula is not reasonable, may be only a few months, protective coating for after printing is also key to save time, it absorbs some of chemical reaction that generates heat sensitive coating of light. Slow the deterioration of paper, and the thermal sensor can protect the micro printer is not damaged, but if the protective coating is not even, not only can greatly reduce the thermal protection coating, even in the printing process will appear tiny particles protective coating fall off, friction printer thermal element, lead to the damage of print heat sensitive components. If uneven thermal paper coating, it will lead to the micro printer, in some places darker, some local color shallow, significantly lower print quality, if the thermal coating of chemical formula is unreasonable, can cause printing paper to save time become very short, good printing paper after printing can be stored for 5 years at room temperature.