RFID Media Tray Shielding in Image Forming Equipment
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Solution Overview
Problem
Existing image forming apparatuses face challenges in preventing erroneous writing to radio frequency identifier (RFID) tags on media without increasing costs or deteriorating heat radiation performance by excessive conductor shielding.
Innovation Solution
The apparatus incorporates a shielding member in the medium receiving unit that partially shields radio waves, preventing erroneous writing to RFID tags while maintaining cost-effectiveness and heat radiation performance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If excessive conductor is used for shielding radio waves, then erroneous writing prevention is improved, but costs increase and heat radiation performance deteriorates
Solution Approach 1:
The patent applies local quality by placing conductor materials only in specific locations where radio wave shielding is necessary, rather than using excessive conductor throughout. The conductor is strategically positioned to shield the radio tag area while leaving other areas open for heat radiation, thus preventing erroneous writing without compromising heat dissipation or increasing costs unnecessarily.
Solution Approach 2:
The patent implements partial action by using a controlled amount of conductor material just sufficient for shielding purposes. Instead of applying excessive conductor coverage, the solution uses the minimum necessary conductor amount to achieve effective radio wave shielding, thereby avoiding increased costs and heat radiation deterioration while still preventing erroneous writing.
2Reliability
If excessive conductor is used for shielding radio waves, then erroneous writing prevention is improved, but heat radiation performance deteriorates
Solution Approach 1:
The patent applies local quality by placing conductor materials only in specific locations where radio wave shielding is necessary, rather than using excessive conductor throughout. The conductor is strategically positioned to shield the radio tag area while leaving other areas open for heat radiation, thus preventing erroneous writing without compromising heat dissipation.
3Reliability
If conductor is used for shielding radio waves, then erroneous writing prevention is improved, but device complexity increases
Solution Approach 1:
The patent applies the extraction principle by separating the shielding function from the overall tray structure. The conductor is extracted as a distinct, simple component that can be independently positioned and adjusted, reducing the complexity of the overall device while maintaining effective shielding functionality for erroneous writing prevention.
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
The solution effectively prevents erroneous writing to RFID tags on media, reduces costs, and maintains heat radiation performance by using a partially shielding member in the medium receiving unit.
Implementation Method 1
a shielding member configured to shield radio waves transmitted from the antenna
Data Source
Figure 1
Figure 2
Figure 3A~3C
AI summary
An image forming apparatus according to an embodiment includes a processor, an image forming unit, a radio communication unit, a receiving unit, and a shielding member. The processor controls supply and ejection of a medium with a radio tag, which is to be housed in a housing unit. The image forming unit forms an image in the supplied medium. The radio communication unit transmits a radio wave for writing information to the radio tag of the supplied medium. The receiving unit receives the ejected medium. The shielding member is formed in a part of the receiving unit and shields radio waves transmitted from the radio communication unit.