Patent ID: 8009534

Claim:
A method of recording data in a multilayered recordable optical recording medium having N (N is an integer of 2 or more) recording layers each of which layers includes a test recording area where test recording is executed for obtaining an optimum recording condition for actual recording, and which method includes a data recording step in which data are sequentially recorded in the recording layers from a first recording layer at a farthest position to an N th recording layer at a nearest position viewed from a recording and reproducing laser beam inputting direction in order, comprising: a test recording executing step which sequentially executes test recording in recordable recording layers having unrecorded parts from a p th recording layer (1≦p≦N) at a farthest position in the recordable recording layers to an arbitrary q th recording layer (p≦q≦N) in the recordable recording layers at the farthest position to the nearest position viewed from the recording and reproducing laser beam inputting direction; a test recording range using step which sequentially uses a plurality of test recording ranges formed by dividing the test recording area in a radius direction from one end to the other end of the recording medium in each of the recording layers (hereinafter this direction is referred to as a test recording direction); and a shifting step which shifts the test recording range of an (m+1) th recording layer by a predetermined shifting distance relative to the test recording range of an m th recording layer in a direction inverse to the test recording direction.