Sheet Conveying Timing Control for Reliable Wireless Tag Reading
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Solution Overview
Problem
In existing image forming apparatuses, the positional relation between wireless tags on sheets and wireless tag communication devices can lead to shielding of radio waves, resulting in errors during information reading and writing, which affects the accuracy and reliability of data transfer.
Innovation Solution
A sheet conveying apparatus is equipped with a detection unit upstream of a predetermined position to detect the sheet, and an instruction unit that issues reading and writing instructions based on the detection timing, ensuring optimal alignment and positioning for effective communication with wireless tags on the sheet.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If information reading and writing is performed using wireless tags on sheets in image forming apparatuses, then data transfer capability is improved, but radio wave shielding occurs due to positional relations between sheets and communication devices, causing reading and writing errors
Solution Approach 1:
The system performs preliminary actions by detecting the sheet's presence and position upstream before the actual reading and writing operations. The control unit issues reading and writing instructions based on detection timing, ensuring the sheet is in the correct position before wireless communication begins, thereby preventing radio wave shielding errors
Solution Approach 2:
The detection unit provides feedback about the sheet's position and timing to the control unit. This feedback mechanism allows the system to adjust the reading and writing operations based on the actual sheet position, ensuring optimal alignment between the sheet and communication device to prevent radio wave shielding
2Productivity
If reading and writing operations are performed without precise timing control, then operation speed is improved, but positional misalignment occurs between sheets and communication devices, causing radio wave shielding
Solution Approach 1:
The detection unit performs preliminary detection of the sheet upstream before the reading and writing operations. This advance detection allows the control unit to issue instructions at the optimal timing, ensuring precise positional alignment is achieved before communication begins, thus preventing radio wave shielding while maintaining operational efficiency
Solution Approach 2:
The system dynamically adjusts the timing of reading and writing operations based on the detected sheet position and conveyance speed. The control unit issues instructions at variable timings depending on when the sheet is detected, allowing the system to adapt to different sheet positions and speeds to maintain optimal alignment
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 configuration stabilizes the writing and reading of information from wireless tags by preventing radio wave shielding, reducing errors, and ensuring accurate data transfer.
Implementation Method 1
radio waves of both the sheet and a wireless tag communication device may be shielded
Implementation Method 2
a detection unit disposed upstream of a predetermined position in a sheet conveying direction and detecting the sheet
Data Source
AI summary
Provided is a sheet conveying apparatus capable of suppressing occurrence of an error related to reading and writing of information from and to a wireless tag. A sheet conveying apparatus includes a reading and writing unit, a detection unit, and an instruction unit. The reading and writing unit reads and writes information from and to a wireless tag provided on a sheet when the sheet passes through a predetermined position on a conveyance path. The detection unit is disposed upstream of the predetermined position in a sheet conveying direction and detects the sheet. The instruction unit issues an instruction related to reading and writing of information from and to the wireless tag based on a timing at which the sheet is detected by the detection unit.