Printer Suction Holes Stabilize Paper Posture
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Solution Overview
Problem
Existing printers with a light transmission portion for image capturing struggle to maintain the stability of the paper posture due to insufficient suction force in regions without suction holes, leading to unstable paper positioning.
Innovation Solution
Incorporating second suction holes adjacent to the light transmission portion and positioning them to oppose the detector, ensuring sufficient suction force and air flow for cooling, which stabilizes the paper posture and maintains detector temperature.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If a light transmission portion is provided in the recording medium transportation surface to enable image capturing from the rear side, then the image capturing function is improved, but the suction force in that region becomes weak leading to unstable paper posture
Solution Approach 1:
The patent applies local quality by providing second suction holes specifically at positions adjacent to the light transmission portion, creating localized suction zones that compensate for the reduced suction force in the light transmission region. This allows different regions of the supporting surface to have different suction characteristics tailored to their specific functions.
Solution Approach 2:
The patent segments the suction function by dividing the suction holes into first suction holes (for general paper suction) and second suction holes (specifically for regions adjacent to light transmission portions). This segmentation allows the light transmission portion to maintain its optical function while the second suction holes provide localized mechanical support for paper stability.
2Stability of the object's composition
If second suction holes are provided adjacent to the light transmission portion to ensure suction force, then paper posture stability is improved, but the device complexity increases
Solution Approach 1:
Instead of uniformly distributing suction holes across the entire supporting surface, the patent applies local quality by concentrating additional second suction holes only at positions adjacent to light transmission portions. This localized approach maintains paper stability where needed while avoiding unnecessary complexity in regions where light transmission is not required.
Solution Approach 2:
The second suction holes serve multiple functions: they provide localized suction force to stabilize paper posture adjacent to light transmission portions, and they also contribute to cooling the light transmission portion through air flow. This multi-functionality justifies the added structural element.
3Area of stationary object
If the light transmission portion is made larger to improve image capturing coverage, then the detection area is improved, but the suction force coverage is reduced leading to more unstable paper posture
Solution Approach 1:
The patent segments the suction support function by introducing second suction holes specifically adjacent to light transmission portions. This allows the light transmission portion to be made larger for improved detection coverage while the second suction holes provide localized mechanical support to compensate for the reduced suction force in these expanded regions.
Solution Approach 2:
The patent applies local quality by providing enhanced suction capability (second suction holes) specifically at positions adjacent to light transmission portions. This allows the light transmission portion to have optimal size for detection while the localized suction enhancement maintains paper stability in the critical regions where light transmission occurs.
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 ensures stable paper posture even with a light transmission portion, enhances suction force, and effectively cools the detector and light irradiator, reducing heat-related degradation.
Implementation Method 1
a first suction hole that opens on the supporting surface in order to suck the transportation target material which is supported by the supporting surface
Implementation Method 2
a detector that has a light irradiator capable of irradiating the transportation target material which is supported by the supporting surface with light through the light transmission portion and detects a transportation amount of the transportation target material based on reflected light of the light
Data Source
AI summary
A transportation device includes a transportation unit that transports a transportation target material, a supporting surface that supports the transported transportation target material, a first suction hole that opens in the supporting surface in order to suck the transportation target material which is supported by the supporting surface, a light transmission portion that is exposed in the supporting surface and through which light is permitted to pass, a detector that has a light irradiator capable of irradiating the transportation target material which is supported by the supporting surface with light through the light transmission portion and detects a transportation amount of the transportation target material based on reflected light of the light with which the light irradiator has irradiated the transportation target material, and a second suction hole that opens in the supporting surface at least one of the positions adjacent to the light transmission portion.