Optical Disc Labeling via Polycarbonate Etching
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Solution Overview
Problem
Existing optical media labeling methods are inadequate for writable and re-writable media, as they either require time-consuming laser interactions with chemical coatings or less elegant permanent markers, and do not allow end users to implement permanent markings without altering the physical dimensions of the media.
Innovation Solution
The method involves etching or removing polycarbonate material from the non-storage side of optical media to a predetermined depth, allowing for visible labels like letters, Braille, or bas-relief images without interfering with data storage, and adding coloring or clear material to maintain rotational balance and visibility.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If laser marking is used to write labels on optical media, then permanent marking is achieved, but the process is time-consuming and requires chemical coatings
Solution Approach 1:
The patent extracts the labeling function from the storage side by removing material from the label side of the optical medium. This creates permanent labels through physical removal rather than time-consuming laser chemical reactions, achieving both permanence and speed.
Solution Approach 2:
The patent replaces the chemical laser marking process with a mechanical material removal process. By using physical removal of polycarbonate material instead of laser-induced chemical changes, the system achieves faster labeling while maintaining permanence.
2Loss of time
If permanent markers are used to write labels on optical media, then quick labeling is achieved, but the marking is less elegant and may not be permanent
Solution Approach 1:
The patent extracts the labeling function from the storage side by removing material from the label side of the optical medium. This creates permanent labels through physical removal rather than time-consuming laser chemical reactions, achieving both permanence and speed.
Solution Approach 2:
The patent changes the physical state of the label side material from intact polycarbonate to removed/etched material. This parameter change creates permanent physical labels that are both quick to apply and lasting, overcoming the limitations of conventional permanent markers.
3Illumination intensity
If material removal depth is increased to create visible labels, then labeling visibility is improved, but data storage capability is compromised
Solution Approach 1:
The patent applies local quality by removing material only to a specific predetermined depth on the label side, leaving the storage side intact. This localized material removal creates visible labels while preserving the full data storage capacity of the optical medium.
Solution Approach 2:
The patent creates label visibility in a different dimension by removing material vertically to a predetermined depth rather than affecting the horizontal storage layers. This dimensional separation allows visible labels without compromising data storage capacity.
4Loss of information
If labeling is done on the non-storage side, then data storage is not affected, but the label may interfere with laser focusing for data retrieval
Solution Approach 1:
The patent applies local quality by removing material only to a specific predetermined depth on the label side, leaving the storage side intact. This localized material removal creates visible labels while preserving the full data storage capacity of the optical medium.
Solution Approach 2:
The patent performs preliminary material removal to a predetermined depth that is calculated to avoid interfering with the laser focus point for data storage. This preliminary action ensures that labels are created without compromising future data retrieval operations.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
This approach enables simple, permanent, and visually distinct labeling of optical media that maintains standard thickness and rotational balance, allowing easy identification of content without affecting data storage or retrieval.
Implementation Method 1
a focused laser to write information... focusing a laser at the information from a storage side of the optical medium to the depth at which the information is written
Implementation Method 2
the laser focus moved to a point mid-way through the surface of the material... Blue lasers focus closer to the surface of the polycarbonate material
Implementation Method 3
allows retrieval of information by reflection of the focused laser against the altered material to measure the reflected light characteristics
Implementation Method 4
The removed polycarbonate presents a visual label, such as letters, Braille, dot-matrix holes and/or a bas-relief image
Data Source
AI summary
An information handling system optical medium disc is labeled by removing portions of disc's polycarbonate material from the non-storage side of the disc to form an image. Formed images define a label in various forms including letters, Braille, dot-matrix holes or bas-relief. Another material fills in the removed polycarbonate to reinforce the image with visual effects, such as raising the image or providing color to the image, and to maintain the balance of the disc for rotation in an optical disc drive.