Cover Section Adhesive Segmentation for Friction Member Replacement
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Solution Overview
Problem
Existing printing apparatuses face challenges in efficiently replacing friction members due to issues with adhesive force, where a weak adhesive causes unexpected peeling off and a strong adhesive makes replacement burdensome.
Innovation Solution
A medium support unit with a cover section featuring a combination of a strong adhesive area and a weak adhesive area on its back side, allowing for secure attachment and easy removal, along with a reinforcing member to maintain shape and a handle for easy handling.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the adhesive force for adhering the friction member to the support section is strengthened, then the friction member is prevented from being peeled off, but replacing the friction member becomes burdensome
Solution Approach 1:
The adhesive layer is segmented into multiple regions with different adhesive strengths: a first adhesive region with strong adhesive force and a second adhesive region with weak adhesive force. This segmentation allows the friction member to be securely attached during use while enabling easy removal when replacement is needed, resolving the contradiction between reliability and ease of operation.
Solution Approach 2:
Different regions of the adhesive layer are assigned different local qualities (adhesive strengths) based on their functional requirements. The first adhesive region has high adhesive strength for secure attachment, while the second adhesive region has low adhesive strength for easy removal. This local differentiation resolves the contradiction by providing both strong attachment and easy replacement in different locations.
2Ease of operation
If the adhesive force for adhering the friction member to the support section is weakened, then replacing the friction member becomes easier, but the friction member may be unexpectedly peeled off
Solution Approach 1:
The adhesive layer is divided into regions with different adhesive strengths, where the first adhesive region provides strong bonding to prevent unexpected peeling during use, while the second adhesive region provides weak bonding for easy removal during replacement. This segmentation simultaneously achieves both reliability and ease of operation.
Solution Approach 2:
The adhesive layer exhibits local quality variation with strong adhesive properties in the first region for reliability and weak adhesive properties in the second region for ease of operation. This local differentiation ensures that the friction member remains securely attached during normal use but can be easily removed when needed.
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
Facilitates the replacement of friction members while preventing peeling off, ensuring secure attachment and easy detachment without damaging the support unit.
Implementation Method 1
a friction member having a static friction coefficient with respect to the medium, which is greater than a static friction coefficient of the support surface
Implementation Method 2
a first area having a first adhesive force and a second area whose adhesive force is less than the first adhesive force
Data Source
AI summary
A medium support unit configured to support a medium on which printing is performed by a printing apparatus, the medium support unit including a support section including a support surface configured to support the medium, and a cover section to be attached to the support section to cover the support surface. The cover section includes, on at least a part of a front side, a friction member having a static friction coefficient with respect to the medium, which is greater than a static friction coefficient of the support surface, and on a back side, a first area having a first adhesive force and a second area whose adhesive force is less than the first adhesive force, the cover section is attached to the support section by adhering at least a part of the first area to the support section.