RFID Tag Writing Verification via Sheet Orientation
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Solution Overview
Problem
Existing image forming apparatuses face challenges in efficiently identifying and separating sheets with writing failures to RFID tags, requiring significant time and effort to detect and reprint affected pages.
Innovation Solution
The apparatus includes a sheet accommodating unit, conveying unit, wireless writing unit, and control unit that ejects a second sheet rotated 90 degrees when data written to an RFID tag differs from data read, allowing visual differentiation of writing failures, and optionally includes a second sheet with success/failure information for each page to identify specific pages with writing issues.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a special pattern indicating writing failure is printed on the sheet, then writing failure can be detected, but it takes time and effort to search for sheets with writing failure among ejected sheets
Solution Approach 1:
The patent applies color changes by printing sheets with different orientations (rotated 90 degrees) to indicate writing failures. This visual differentiation allows users to quickly identify problematic sheets without time-consuming searches, resolving the contradiction between reliable detection and time efficiency.
Solution Approach 2:
The patent introduces orientation as an additional dimension to indicate writing failure status. By rotating failed sheets 90 degrees relative to successful sheets, the system enables immediate visual identification, eliminating the need to search through ejected sheets and reducing time loss while maintaining reliable detection.
2Reliability
If pages causing writing failure are reprinted, then writing quality is improved, but it takes time and effort to identify which pages need reprinting
Solution Approach 1:
The patent uses orientation-based visual indicators (rotated sheets) to clearly mark which pages have writing failures. This enables users to immediately identify pages requiring reprinting, eliminating time loss while ensuring high writing quality through targeted reprints of only the problematic pages.
Solution Approach 2:
By utilizing sheet orientation as an additional dimension, the patent provides immediate visual feedback about which pages need reprinting. This eliminates the time-consuming process of identifying failed pages while maintaining improved writing quality through precise reprinting of only the affected pages.
3Measurement precision
If all sheets are processed through writing and reading verification, then writing accuracy is ensured, but processing time increases
Solution Approach 1:
The patent segments the sheet processing into two distinct orientations: normal orientation for successful writes and rotated orientation for failed writes. This segmentation allows the system to maintain writing accuracy through verification while improving productivity by enabling rapid visual identification and separation of failed sheets without requiring complete reprocessing of all sheets.
Solution Approach 2:
The patent adds orientation as an additional dimension to the sheet processing system. This allows the apparatus to maintain writing accuracy through reading verification while improving productivity, as failed sheets can be immediately identified by their rotated orientation and processed separately, reducing the need to reverify all sheets.
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 solution enables easy visual identification of sheets with writing failures, preventing mistaken use and reducing the time and effort required to locate and reprint affected pages, while ensuring efficient sheet processing and user convenience.
Implementation Method 1
a wireless writing unit (writer) that writes data to an RFID tag on the sheet by wireless communication
Implementation Method 2
a wireless reading unit (reader) that reads data from the RFID tag on the sheet by wireless communication
Data Source
AI summary
An information processing apparatus includes a sheet holder, a conveyor, a wireless writer, a wireless reader, and a controller. The sheet holder accommodates a sheet. The conveyor conveys the sheet from the sheet holder. The wireless writer writes data to a wireless tag on a first sheet. The wireless reader reads data from the wireless tag on the first sheet. The controller ejects a second sheet from the sheet holder when the data written in the first sheet by the writer and the data read from the first sheet by the reader are different from each other.