摘要:
Provided is an optical information recording medium employing an In-Groove recording system, and having a preferable recording characteristic with a high modulation degree and low jitter characteristics. The medium is comprised of a circular-disk shaped substrate 2 having a through hole at a center portion thereof and a spiral guide groove 3 on one surface thereof; a reflective layer 4 formed on the guide groove 3 of the substrate 2; a recording layer 5 formed on the reflective layer 4 and composed of an organic material including a dye; a protection layer 6 provided on the recording layer 5; and a light-transmissive layer 6 formed on the protection layer 6. The recording layer 5 includes an organic dye which is an azo metal complex compound having a structure represented by (Chemical formula 1) and a functional group represented by (Chemical formula 2).
摘要:
Playback durability of a writable optical disk is ensured. A method of controlling a playback condition includes continuously irradiating an optical disk with a laser beam having a power level lower than a mark formation level and detecting a change of a state of a signal caused by a return light from the optical disk, and setting a playback condition for the optical disk according to the change of the state of the signal. The playback durability of the optical disk can be ensured by adaptively controlling the playback condition as stated above.
摘要:
Provided is an optical information recording medium employing an In-Groove recording system, and having a preferable recording characteristic with a high modulation degree and low jitter characteristics. The medium is comprised of a circular-disk shaped substrate 2 having a through hole at a center portion thereof and a helical guide groove 3 on one surface thereof; a reflective layer 4 formed on the guide groove 3 of the substrate 2; a recording layer 5 formed on the reflective layer 4 and composed of an organic material including a dye; a protection layer 6 provided on the recording layer 5; and a light-transmissive layer 7 formed on the protection layer 6. The recording layer 5 includes an organic dye which is an azo metal complex compound having a structure represented by (Chemical formula 1) and a functional group represented by (Chemical formula 2).
摘要:
An optical information recording medium having a drawing region capable of being used without being reversed and without interference with a data recording region is disclosed. The optical information recording medium has a structure in which a recording layer, a semitransparent reflective layer, a discoloration layer, and a protective layer are is formed in order on a first light-transmitting substrate so that the discoloration layer is irradiated with a laser beam to change the optical property of the discoloration layer. For example, interaction between a colorant and a developer in the discoloration layer which assumes a black color is eliminated to cause the color to disappear, thereby forming an image.
摘要:
Playback durability of a writable optical disk is ensured. A method of controlling a playback condition includes continuously irradiating an optical disk with a laser beam having a power level lower than a mark formation level and detecting a change of a state of a signal caused by a return light from the optical disk, and setting a playback condition for the optical disk according to the change of the state of the signal. The playback durability of the optical disk can be ensured by adaptively controlling the playback condition as stated above.
摘要:
An optical information recording medium capable of being drawn without being overturned by an optical information recording apparatus and cable of being drawn not depending on the wavelength of a laser light to be irradiated, the optical information recording medium having an information recording portion in which a recording layer and a first reflection layer are formed successively on a first substrate, and having a drawing portion in which a second reflection layer, a color-change layer, a color-change assistance layer, and a protection layer are formed successively on a second substrate, in which the second reflection layer is heated by irradiation of a laser light and the material in the color-change layer and the material in the color-change assistance layer are melted by the heat and mixed to cause a color change thereby forming images.
摘要:
An optical information recording medium has a recording layer, a semi-transmissive reflective layer, a heat-generating layer, a reflective layer, a deformation layer, and a protective layer formed sequentially on a first translucent substrate, and the reflective layer and deformation layer are deformed by heat by irradiating a laser beam to the heat generating layer. Diffused reflection of visible light at the deformed reflecting layer manifests an image. Thus, rendering can be performed by an optical information recording device without flipping over the optical information recording medium, and without interfering with the data recording region.
摘要:
An optical information recording medium has a recording layer and a first semi-transmissive reflective layer which are formed on one surface of a first light-transmissive substrate. Information can be recorded by irradiating a laser beam to the recording layer from the other surface side of the first light-transmissive substrate. The optical information recording medium further comprises a second light-transmissive substrate bonded to the one surface side of the first light-transmissive substrate, which includes the recording layer and the first semi-transmissive reflective layer, a second semi-transmissive reflective layer formed on the second light-transmissive substrate, a heat generating layer formed on the second semi-transmissive reflective layer, and a color developing layer formed on the heat generating layer. With the optical information recording medium, drawing of an object viewable from the label surface side can be made without restricting a data recording area with not need of turning over the optical information recording medium.