PURPOSE: To stack a doughnut-like sheet adhesive of a double-coated pressure sensitive type on a transparent substrate with an accurate position and to obtain an information recording medium without squeezing of the adhesive by positioning the center hole of the transparent substrate to coincide with the positioning hole of the releasing paper.

CONSTITUTION: The one transparent substrate 1 is mounted on a supporting tool 6 by inserting the core rod 6a into the center hole of the substrate. After removing the releasing paper of the adhesive 3, the adhesive sheet is mounted on the transparent substrate in a manner that the exposed surface faces to the transparent substrate 1 with inserting the core rod 6b into the positioning hole. They are pressed from upward to adhere the adhesive 3 to the transparent substrate 1. Then the other releasing paper 5 is removed from the adhesive to expose the upper side of the adhesive, on which the other transparent substrate 1 is mounted by fitting to the core rod 6a. They are then pressed together and sticking of two substrates is thus completed. Since these substrates are fixed by use of the rod 6a of the tool 6, two substrates and the adhesive 3 are pressed in the accurate position, which avoids squeezing of the adhesive.