RFID Media Orientation Detection for Image Registration
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Solution Overview
Problem
The challenge in the printing industry is to properly register images on media with embedded RFID tags, ensuring that the printed image corresponds with the data programmed into the tags, especially when the arrangement of RFID tags is nonsymmetrical, leading to increased costs and waste due to mis-orientations.
Innovation Solution
An image forming system that detects the orientation of RFID tags on media and adjusts the image registration by rotating or flipping the media, using control logic to match the actual orientation with the expected orientation, ensuring accurate data association and image placement.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If media with nonsymmetrical RFID tag arrangements is printed without orientation detection, then printing process is simple, but image and tag data become misaligned causing waste and increased costs
Solution Approach 1:
The system performs preliminary detection of RFID tag orientations and positions before the printing process. The control logic determines the actual orientation of the media based on detected tag arrangements, and pre-calculates the necessary rotation or flipping operations. This preliminary action ensures that when printing occurs, the image is already correctly oriented relative to the tags, preventing misalignment waste while maintaining efficient processing.
Solution Approach 2:
The system implements feedback by detecting the actual orientation of RFID tags on the media, comparing it with the expected orientation, and using this information to adjust the printing process. The control logic receives feedback about tag positions and orientations, then modifies the image orientation accordingly to ensure proper alignment between printed images and tag data, resolving the contradiction between precision and complexity.
2Productivity
If media orientation is not corrected, then printing speed is maintained, but misalignment occurs requiring reprints and increasing time consumption
Solution Approach 1:
The system performs orientation detection and correction calculations before the actual printing operation. By determining the correct image orientation in advance based on detected tag arrangements, the system avoids the need for reprints due to misalignment. This preliminary action maintains printing throughput while preventing time loss from corrections.
Solution Approach 2:
The system automatically detects orientation issues and performs self-correction by adjusting image orientation based on detected tag positions. This self-service capability eliminates the need for manual intervention or reprints, maintaining high productivity while preventing time loss from alignment errors.
3Manufacturing precision
If RFID tags are used with symmetric label arrangements, then manufacturing cost increases, but proper registration becomes easier
Solution Approach 1:
The system is specifically designed to handle asymmetric RFID tag arrangements by detecting actual tag positions and orientations. Instead of requiring symmetric arrangements for proper registration, the system adapts to asymmetric configurations through automatic orientation detection and image rotation. This allows the use of cost-effective asymmetric tag placements while maintaining accurate image registration.
Solution Approach 2:
The system changes the orientation parameter of the printed image based on detected tag arrangements. By dynamically adjusting image orientation parameters according to actual tag positions, the system achieves accurate registration regardless of whether tags are arranged symmetrically or asymmetrically, allowing optimal use of RFID tags without compromising registration accuracy.
Data Source
AI summary
A printing system (250) includes a printing subsystem (255) in the form of a printer assembly (14). The printing subsystem (255) includes a printer housing (257) in which a print engine (259) resides and (261) for storing data indicating the expected orientation of labels on a sheet of RFID label media (18). The contents of memory (261) can be obtained from an end user application (270) which may supply the position data to the printing subsystem (255) in a print data stream. Pre-programmed position data is read from a radio frequency memory storage device (88) on print media (18) having one or more devices (88) embedded thereon. The expected orientation data is compared to actual orientation data in order to determine if an image to be printed on a label (20) should be registered by rotation and/or flipping of the image and/or media.