Artificial fingerprint liquid and fingerprint resistance evaluation method

摘要

PROBLEM TO BE SOLVED: To provide an artificial fingerprint liquid which can produce a fingerprint trace similar to a fingerprint trace of a human being, and excellent in reliability of evaluation.SOLUTION: There is provided an artificial fingerprint liquid in which, when a contact angle to a glass is measured, a behavior of the contact angle in 300 m second to 2000 m second after adhesion of a drop to the glass, satisfies the following formulae (1), (2) when a time (m second) is x, and the contact angle (°) is y: y=-5.0ln(x)+45.2 is the formula (1) and y=-6.0ln(x)+55.4 is the formula (2).SELECTED DRAWING: Figure 3