Patent ID: 7729223
Filing Date: 2010-06-01
Classification: G11B

Abstract:
1. A recording method for dye-based recordable DVD medium, comprising: recording shortest marks on a recording layer primarily containing an organic dye, which is formed on a substrate having a guide groove with a wobble formed on a surface thereof, by the use of a simple rectangular wave pulse, recording marks each having the second shortest or still longer mark length by the use of one pulse of which two sites of the front and rear edges are highly energized for a given length of time, and controlling the optical energy for irradiating the rear edge or backwards of the one pulse with a cooling pulse so as to be 0.1 mW or less for a given length of time, wherein when the recording power of the front and rear edges of the pulse used for the marks each having the second shortest or still longer mark length is represented by P