Inkjet Filter Grip for Safe Mist-Free Replacement
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Solution Overview
Problem
In existing printing devices, the accumulation of mist in filters reduces their mist removal capability, necessitating frequent filter replacements, which can lead to contamination of hands during manual handling.
Innovation Solution
A printing device design that includes a filter unit with a grip portion, such as handles, to facilitate replacement without direct hand contact, utilizing a filter case with enhanced rigidity to maintain the original shape and reduce contamination, and a sensor system to accurately detect filter presence and prevent platen movement errors.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If manual handling of filter is used for replacement, then ease of operation is improved, but hand contamination occurs due to direct contact with mist-covered filter
Solution Approach 1:
A grip portion is introduced as an intermediary component between the operator's hand and the filter. The grip portion protrudes from the filter case and allows operators to handle the filter unit without direct contact with the filter media, thereby preventing hand contamination while maintaining ease of operation.
Solution Approach 2:
The filter unit is segmented into distinct functional components: the filter media itself and the grip portion. This segmentation allows the grip portion to serve as a dedicated handling interface separate from the contaminant-laden filter media, enabling contamination-free operation.
2Ease of operation
If filter is made flexible for easy installation, then ease of operation is improved, but filter deformation occurs making accidental contact more likely
Solution Approach 1:
The filter unit combines the filter media with a rigid filter case structure. This composite construction provides the necessary shape stability and rigidity to prevent deformation and accidental contact, while the overall unit remains easy to install through the protruding grip portion.
Solution Approach 2:
The filter media is contained within a rigid filter case structure. This enclosure provides structural support and shape stability to the filter assembly, preventing deformation while allowing the filter media to perform its filtration function.
3Ease of operation
If grip portion is provided on lower case, then ease of operation is improved, but mist contamination of grip portion occurs
Solution Approach 1:
The grip portion is positioned on the upper case, utilizing the vertical dimension to place the grip interface above the mist generation zone. This spatial arrangement in another dimension allows operators to grip the filter unit from above, avoiding contamination while maintaining ease of operation.
4Reliability
If sensor detects filter presence accurately, then reliability is improved, but device complexity increases due to additional detection system
Solution Approach 1:
The sensor system automatically detects the presence or absence of the filter unit without requiring manual intervention or complex external monitoring systems. The sensor is integrated into the device structure, allowing it to self-monitor filter status and provide reliable detection while minimizing additional complexity.
Data Source
Figure 1
Figure 2A~2B
Figure 3A~3C
AI summary
A printing device includes an inkjet head, a filter accommodating portion, a filter configured to be accommodated in the filter accommodating portion and extending in a given direction from one end to the other end of the filter to collect mist, and a grip portion provided at at least one of the one end or the other end of the filter. The grip portion includes a handle protruding from the filter, a recessed portion recessed inside the filter, or a hole.