PTP Sheet Identification Using Lattice Pattern Imaging
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Solution Overview
Problem
Existing methods for individual identification of PTP sheets require high-resolution imaging means due to the small size of artifact metrics like object fingerprints, increasing manufacturing costs and complexity.
Innovation Solution
A PTP management system that captures images of PTP sheets using a camera to acquire images of printed portions and lattice patterns formed during heat bonding, generating images for individual identification without the need for high-resolution imaging.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If artifact metrics or object fingerprint is used for individual identification, then individual identification can be performed without processing for imparting individual identification information, but high-resolution imaging means is required because the metrics are very small in size such as in micrometer order
Solution Approach 1:
The patent creates a macro copy of the lattice pattern formed during heat bonding. Instead of directly imaging the micrometer-scale artifact metrics, the system captures the enlarged lattice pattern structure that replicates the unique characteristics of each PTP sheet. This copying approach allows standard cameras to capture identification features without requiring high-resolution imaging equipment.
Solution Approach 2:
The patent transitions from imaging in the micrometer dimension (artifact metrics) to imaging in the millimeter dimension (lattice pattern). By capturing the lattice pattern at a larger scale where individual pockets are visible as distinct units, the system achieves individual identification using standard imaging resolution while maintaining the unique characteristics needed for identification.
2Reliability
If labels or printing facilities are used to impart individual identification information to objects, then individual identification is achieved, but manufacturing cost is increased and additional work is required
Solution Approach 1:
The PTP sheet manufacturing process itself creates the identification features through the lattice pattern formed during heat bonding. The system eliminates the need for separate labeling or printing operations by utilizing the existing heat bonding process to generate unique identification characteristics. Each PTP sheet automatically obtains its own identification pattern without additional manufacturing steps.
Solution Approach 2:
The patent merges the sealing function with the identification function. The lattice pattern formed during the heat bonding process serves dual purposes: it provides structural integrity for sealing and simultaneously creates unique identification features. This consolidation eliminates separate identification processing steps and reduces manufacturing complexity.
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
Enables individual identification of PTP sheets with sufficient accuracy using standard imaging equipment, reducing manufacturing costs and complexity by leveraging unique position relationships between printed portions and lattice patterns.
Implementation Method 1
an acquisition unit that captures an image of the PTP sheet with a camera
Implementation Method 2
the pockets are sealed with a cover film by heat bonding on the flange portion
Data Source
AI summary
A PTP management system includes an acquisition unit that captures an image of a PTP sheet with a camera from an opening side or a protruding side of pockets having a printed portion, to thereby acquire the image including the printed portion and a lattice pattern image formed on a cover film, and a generation unit that generates, from the acquired image, an image for individual identification to be used for identifying the PTP sheet.