摘要:
For each of a number of regions of a label surface of a substrate that are to be optically written to form a human-readable image, a corresponding power level at which an optical beam is to impinge the region to optically write a desired mark to the region as part of the image is determined. The optical beam impinges the region by being switched on and off from a higher power level to a lower power level to achieve the corresponding power level on average. At least one of the following are adjusted: a number of times the optical beam is switched on and off, a length of time the optical beam remains on each time it is switched on, and a duty cycle of the optical beam while the optical beam is positioned over the region.
摘要:
Embodiments include forming optically visible marks in a radiation-sensitive coating disposed on an optical disc using electromagnetic radiation having a first wavelength and bleaching a background of the radiation-sensitive coating using electromagnetic radiation having a second wavelength.
摘要:
An optical disc comprises a data layer defining a data side of the disc, the data layer being writable or readable with a data laser tuned to a first wavelength, and an imaging layer on the data side of the disc, the imaging layer comprising a colorformer and a developer.
摘要:
This invention relates to a self aligning optical printing system, comprising: an electromagnetic energy beam source capable of emitting a plurality of electromagnetic energy beams of differing wavelengths; a plurality of lenses located substantially adjacent to each other such that each of the plurality of electromagnetic energy beams interacts with one of the plurality of lenses to self align the plurality of electromagnetic energy beams with respect to each other; and a multi-wavelength media located adjacent to the plurality of lenses such that the plurality of self aligned electromagnetic energy beams interacts with the media.
摘要:
The present invention relates to a microcapsule that can be used to form a rewritable medium for visual displays that are stable in the presence of electric fields having a strength that is typical in the work environment. The microcapsule of the invention comprises charged particles of one or more colors that are suspended in a phase change material that has a melting temperature in the range of between about 30° C and about 200° C. The microcapsules can be used to form an electrophoretic coating that includes microcapsules of the invention distributed throughout a polymer matrix. The electrophoretic coating can be used to coat a substrate to form a rewritable medium.
摘要:
A method of facilitating focusing of a multi-function digital media drive, is such as to generate two or more error signals each indicative of a focus of an energy beam by an optical arrangement onto first and second different recording layers of a digital medium in the drive, the first recording layers being covered with a protective, energy beam transparent substrate. A selected on of the error signal is used to determine a focus correction.
摘要:
Calibration of a focus offset in an optical drive. A calibration pattern, comprising a plurality of marked areas, is marked upon a medium. A user input is received, identifying a perceived darkest marked area of the calibration pattern. The focus offset is determined corresponding to the perceived darkest marked area.