Patent ID: 7480223
Filing Date: 2009-01-20
Classification: G11B

Abstract:
1. A recording method of recording information in a dye-based write-once digital versatile disc (DVD) comprising a substrate having a wobbled guide groove and a recording layer located overlying the substrate and comprising an organic dye, comprising: irradiating the DVD with three kinds of single light pulses, each of which comprising a recording area to record a mark and a cooling area having a light quantity not greater than 0.1 mW for a predetermined time while a space is formed between the adjacent marks, wherein, when the mark having a shortest length is formed, the irradiating comprises: irradiating the DVD with a first single light pulse in which an entire of the recording area has a power level of W when the mark having a second shortest length is formed, the irradiating comprises: irradiating the DVD with a second single light pulse in which an entire of the recording area has a power level of W when the mark having a third shortest length or longer is formed, the irradiating comprises: irradiating the DVD with a third single light pulse in which at least a rear end portion of the recording area has a power level of W wherein W