Transparent Member Unit Position Adjustment for Image Reading
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Solution Overview
Problem
Existing image reading devices face challenges in maintaining accurate image reading and efficient medium conveyance due to difficulties in attaching, detaching, and adjusting the transparent member, which affects the conveyance gap and reading accuracy.
Innovation Solution
The image reading device incorporates a transparent member unit with a position adjuster and guide system that allows for secure attachment and easy detachment of the transparent member, maintaining a consistent conveyance gap and optical path length, thereby ensuring stable image reading and medium conveyance without requiring extensive adjustments.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the transparent member is made detachable for easy maintenance and replacement, then the ease of operation is improved, but the device complexity increases due to the need for attachment and detachment mechanisms
Solution Approach 1:
The transparent member is designed as a separate detachable component from the main reading mechanism body. This segmentation allows the transparent member to be easily removed and replaced without disassembling the entire device, while the attachment mechanism remains simple and integrated into the housing.
Solution Approach 2:
The transparent member is extracted as an independent removable element from the fixed structure. The attachment mechanism provides simple engagement features that allow the transparent member to be taken out for cleaning or replacement and easily reattached, reducing maintenance complexity despite adding a detachment capability.
2Manufacturing precision
If the position adjuster is added to adjust the position of the transparent member unit, then the manufacturing precision is improved, but the device complexity increases
Solution Approach 1:
The position adjuster provides adjustable positioning of the transparent member unit along the optical path, allowing dynamic adjustment to compensate for manufacturing tolerances and alignment variations. This dynamic adjustment capability ensures precise positioning without requiring extremely tight manufacturing tolerances on all components.
Solution Approach 2:
The position adjustment capability is localized to the transparent member unit attachment point, rather than requiring adjustment mechanisms throughout the entire optical system. This localized adjustment simplifies the overall device complexity while achieving the necessary positioning precision at the critical interface.
3Reliability
If the guide system is implemented to guide the transparent member unit, then the reliability of medium conveyance is improved, but the device complexity increases
Solution Approach 1:
The guide system acts as an intermediary mechanism that ensures the transparent member unit is properly positioned and oriented during attachment and conveyance. This simple guiding structure maintains alignment and stability without requiring complex control systems or multiple adjustment mechanisms.
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 enhances the workability of attaching and detaching the transparent member, maintains reading accuracy, and prevents deterioration in image quality by keeping the conveyance gap consistent, ensuring smooth medium conveyance and accurate image reading.
Implementation Method 1
The reading mechanism irradiates the opposing member and a medium being conveyed between the transparent member and the opposing member with light through the transparent member and receive reflected light from the opposing member and the medium
Data Source
AI summary
An image reading device includes a transparent member unit including a transparent member, an opposing member opposed to the transparent member, and a reading mechanism. The reading mechanism irradiates the opposing member and a medium being conveyed between the transparent member and the opposing member with light through the transparent member and receive reflected light from the opposing member and the medium. The reading mechanism includes a position adjuster to which the transparent member unit is secured and a guide to guide the transparent member unit in a direction intersecting a direction of conveyance of the medium to detachably attach the transparent member unit to the reading mechanism. The position adjuster changes a position at which the transparent member unit is secured with respect to the reading mechanism. The transparent member unit is secured to the position adjuster.