Study On Thermal Sensitive Paper Quality Detecting System Based On μC/OS Platform

Along with the development of computer and electronics technology, printer has been widely applied to each realm, and becomes the important output means of various intelligent and digital equipments. Thermal printer is popular by right of its unique performance with small size, light weight, high reliability, clear print character, low noise and without ribbon, and becomes the first choice of note print in supermarket, emporium, transportation, entertainment and various service professions.Currently, short keeping time of print note is the technique bottleneck of thermal printer. For a long time, thermal sensitive paper with long preserving time and high anti-pollution needs to import from the abroad, high cost hinders its popularization. So, dot matrix printing technology with ribbon and thermal transfer printing technology are applied in such field where note needs long keeping time. This not only needs complex print equipment, but also causes a waste of resources because of large consumption of ribbon. Now, such thermal paper with long preserving time (10 years) and high anti-pollution (gasoline, alcohol and so on) has been developed in the country. But lack of the parameter of paper causes it to be very difficult to adjust the control method on thermal printer and to realize the needed print quality.The paper researches on such issue. First, gets the feature data of thermal sensitive paper by using of self-designed thermal sensitive paper detecting system. Next, with these data, promotes and realizes the printing of high and low sensitivity thermal sensitive paper by using auto adjusting print method on thermal printer, and carrys out history control method to thermal printer, further improves the print quality. Last, with the permission of print speed of low sensitivity thermal sensitive paper, this paper makes such try to applyμC/OS-II to the software design of thermal printer, not only provides great convenience for accomplishing the paper but also lays the foundation for adding other function and data communication.