Detecting Apparatus Shutter and Contact Mechanism
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Solution Overview
Problem
Existing image forming apparatuses face challenges in maintaining detection accuracy and preventing contamination of detecting apparatuses due to paper powder and friction issues, while also ensuring transportability of recording materials, as conventional solutions either lack a combined shutter opening/closing and contact/separation mechanism or are prone to defects like paper jams.
Innovation Solution
A detecting apparatus with a light emitting element and a light receiving element, integrated into an apparatus main body that can move between contact and separation positions, featuring an opening/closing mechanism to control light passage and maintain detection accuracy without contaminating the detection material.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If the detecting apparatus is arranged inside the transport path to detect patch images or surface properties, then detection accuracy is improved, but the detecting apparatus is contaminated by paper powder and loses detection ability
Solution Approach 1:
The shutter is closed in advance before the detecting apparatus enters the transport path, preventing paper powder from reaching the detection window. The shutter opens only when the detecting apparatus is positioned to perform detection, ensuring the detection window remains clean while allowing accurate detection when needed.
Solution Approach 2:
The shutter acts as an intermediary component between the transport path and the detection window. It selectively blocks or allows passage of paper powder while enabling or preventing light transmission for detection, thus protecting the detection system without compromising its functionality.
2Measurement precision
If the detecting apparatus is constantly abutted against the opposing surface to maintain constant distance, then reading accuracy is improved, but defective images are created due to friction and paper jams occur
Solution Approach 1:
The detecting apparatus transitions from a static constantly-contacting design to a dynamic system that alternates between contact and separation states. It contacts the opposing surface only during detection to ensure constant distance and accuracy, then separates to eliminate friction and prevent paper jams during transport.
Solution Approach 2:
The detecting apparatus performs periodic contact-separation cycles synchronized with the detection process. Contact occurs periodically when detection is required, and separation occurs periodically during transport, creating a rhythmic pattern that balances accuracy requirements with transport reliability.
3Measurement precision
If the shutter is opened during imaging to allow light passage, then detection accuracy is improved, but contamination by paper powder increases during normal transportation
Solution Approach 1:
The shutter dynamically changes its state between open and closed positions based on operational requirements. It opens during imaging to allow light passage for accurate detection, then closes during normal transportation to block paper powder from contaminating the detection window, thus adapting to different operational phases.
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
Prevents contamination and improves detection accuracy while maintaining transportability by providing both an opening/closing mechanism and contact/separation functionality, reducing the risk of defects such as paper jams and ensuring stable image formation.
Implementation Method 1
a light emitting element which emits light toward a detection material; a light receiving element which receives reflected light from the detection material
Data Source
AI summary
A detecting apparatus includes: a light emitting element which emits light toward a detection material; a light receiving element which receives reflected light from the detection material; and an apparatus main body having an opening/closing member which opens and closes an opening through which light emitted from the light emitting element and reflected light from the detection material pass through, the apparatus main body being capable of moving between a first position where the apparatus main body comes into contact with the detection material and a second position where the apparatus main body separates from the detection material, and the opening/closing member being configured to open when the apparatus main body moves to the first position and to close when the apparatus main body moves to the second position.