Medium Conveying Roller Assembly with Integrated Nipping Force Adjustment
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Solution Overview
Problem
Existing medium conveying devices require separate operations to adjust the biasing force applied by biasing members to rollers, which complicates the process and may not efficiently accommodate different types of recording media.
Innovation Solution
A medium conveying device design where the biasing force is adjusted in conjunction with the mounting of the first roller, second roller, and biasing member on the main body, using an attachment member and adjustment member to change the posture of the biasing member, allowing for seamless adjustment of the nipping force based on the type of recording medium.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the biasing force is adjusted by an independent operation separate from mounting, then the adjustment can be made, but the operation process becomes complex and time-consuming
Solution Approach 1:
The patent combines the biasing force adjustment operation with the mounting operation of the first roller, second roller, and biasing member. The adjustment member is integrated into the attachment member, allowing both mounting and adjustment to be performed simultaneously in a single operation, thereby simplifying the overall process and reducing operational complexity
2Adaptability or versatility
If separate adjustment operation is required, then the biasing force can be adjusted, but additional time and operational steps are needed
Solution Approach 1:
The adjustment member is pre-configured on the attachment member with the first roller, second roller, and biasing member. When the attachment member is mounted on the main body, the adjustment has already been performed or can be performed immediately, eliminating the need for separate adjustment operations and reducing time loss
3Ease of operation
If the attachment member includes all components, then mounting is simplified, but the adjustment of biasing force requires additional independent operation
Solution Approach 1:
The adjustment member is integrated into the attachment member structure, combining the mounting and adjustment functions into a single unified operation. This eliminates the need for separate adjustment steps while maintaining the simplicity of the mounting process
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 simplified operation and efficient conveyance of various recording media by adjusting the nipping force without additional power, ensuring optimal handling of thin and thick papers without causing wrinkles or roll marks.
Implementation Method 1
a biasing member that biases the first roller toward the second roller
Implementation Method 2
an adjustment member that changes a posture of the biasing member in conjunction with mounting of the attachment member on the main body to adjust a biasing force applied by the biasing member to the first roller
Implementation Method 3
a second roller that conveys a recording medium while nipping the recording medium between the first roller and the second roller
Data Source
AI summary
A medium conveying device includes: a first roller that is rotatably supported; a second roller that conveys a recording medium while nipping the recording medium between the first roller and the second roller; a biasing member that biases the first roller toward the second roller; an attachment member to which the first roller, the second roller, and the biasing member are attached, the attachment member being mounted on and dismounted from a main body together with the first roller, the second roller, and the biasing member; and an adjustment member that changes a posture of the biasing member in conjunction with mounting of the attachment member on the main body to adjust a biasing force applied by the biasing member to the first roller.