What is the minimum measurable area? How fast is the minimum measurable pressure application speed?
A. A. The minimum measurable area is 0.1mm square, which means that micro-capsules are coated evenly on 0.1mm square area of Prescale. The minimum measurable pressure application speed is 1 msec. At anysec. base speed, accurate data cannot be guaranteed since microcapsules and color-developing material would absorb the pressure. As for the slowest speed, there’s no limit unless pressure is repeatedly applied. Correlation between pressure and micro-capsules The size of micro-capsule and the strength of its wall have correlation with pressure. Large micro-capsules are broken by low pressure and small micro-capsules are broken by high pressure. Also, microcapsules with thin walls are broken by low pressure and those with thick walls are broken by high pressure. Several tens of micro-capsules in different sizes and wall strength are used for Prescale. The sizes of micro-capsules are from several up to tens of . Small micro-capsules are coated on the Prescale to measure high pressure and la
