Background and Calibration Roller for Scanners
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Solution Overview
Problem
Conventional scanners can only rotate a background and calibration roller between two positions, limiting the ability to switch between different background sections, such as black and white, which complicates the mechanism and restricts scanning quality.
Innovation Solution
A scanner design with a background and calibration roller featuring a black background section, a white background section, and at least one calibration section, utilizing a main driving assembly, a torque limiter, and a stop-driving assembly to selectively position these sections towards the scanning module, allowing for multiple background and calibration options without additional driving mechanisms.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If the background and calibration roller is configured with only a single background section and a single calibration section, then the mechanism remains simple, but the scanning quality and adaptability are limited
Solution Approach 1:
The background and calibration roller is designed to perform multiple functions: it serves as both a background roller and a calibration roller, and can provide different background colors (black and white sections) to meet various scanning requirements. This multi-functionality allows the system to achieve higher adaptability without proportionally increasing mechanism complexity.
Solution Approach 2:
The outer surface of the background and calibration roller is divided into multiple functional sections including a black background section, a white background section, and at least one calibration section. This segmentation allows different portions of the roller to serve different purposes, enabling the system to handle various scanning scenarios with a single component rather than requiring multiple separate components.
2Adaptability or versatility
If the numbers of background sections or calibration sections on the background and calibration roller are increased, then scanning quality and adaptability improve, but the mechanism complexity greatly increases
Solution Approach 1:
The existing main driving assembly, which originally only drove the paper feeding and exporting rollers, is made universal by also enabling it to drive the background and calibration roller through the first sleeve and torque limiter connection. This allows the system to achieve multiple functions without adding a separate driving mechanism, thus improving adaptability while controlling complexity.
Solution Approach 2:
The driving function for the background and calibration roller is merged with the existing main driving assembly rather than creating a separate driving system. The first sleeve and torque limiter serve as connection elements that integrate the background and calibration roller into the existing driving chain, allowing multiple functions to be achieved through combined operations of existing components.
3Ease of operation
If a rotation mechanism is added to rotate the background and calibration roller between two positions, then the ability to switch between background sections is improved, but the device complexity increases
Solution Approach 1:
The rotation function for the background and calibration roller is merged with the existing main driving assembly. The first sleeve connects the roller to the transmission set, and the torque limiter allows controlled rotation while preventing overload. This integration eliminates the need for a separate rotation mechanism, achieving ease of operation without proportionally increasing device complexity.
Solution Approach 2:
The main driving assembly is given the additional function of rotating the background and calibration roller in addition to its original function of driving the paper feeding and exporting rollers. This multi-functionality allows the system to achieve background switching capability through an existing component rather than requiring a dedicated rotation mechanism.
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
Enables improved scanning quality by allowing the scanner to easily switch between different background and calibration sections, enhancing image output and simplifying the mechanism by using existing driving components for the paper feeding and exporting rollers.
Implementation Method 1
The torque limiter contacts the first end and the first sleeve, and a torque of the first sleeve is adapted to be transmitted to the background and calibration roller through the torque limiter
Data Source
AI summary
A scanner includes a paper feeding roller set, a paper exporting roller set, a scanning module, a background and calibration roller, a main driving assembly, a first sleeve, a torque limiter and a stop-driving assembly. The paper feeding roller set and the paper exporting roller set are driven by the main driving assembly. The background and calibration roller includes a black background section, a white background section and at least one calibration section. The first sleeve sleeves the first end and is linked to the main driving assembly. The torque limiter is disposed between the background and calibration roller and the first sleeve and contacts the same. The stop-driving assembly is selectively abutted against two portions of the background and calibration roller.