Grounded Pressing Plate Circuit Board Integration
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Solution Overview
Problem
The existing multi-functional apparatuses with image reading capabilities have increased production costs and complexity due to the use of multiple parts for grounding the pressing plate, which complicates the production process.
Innovation Solution
An image reading apparatus where the pressing plate is grounded through an electric circuit formed on a circuit board member, simplifying the production process and reducing costs by eliminating the need for additional grounding components.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the pressing plate is grounded through multiple plate springs and separate ground lines, then the pressing plate can be effectively discharged, but the number of parts increases and production cost increases
Solution Approach 1:
The patent combines the grounding function with the existing circuit board member by forming a grounded electric circuit directly on it. This eliminates the need for separate plate springs and ground lines, reducing the number of parts while maintaining effective discharge of the pressing plate. The circuit board member serves dual purposes: supporting the image reading section and providing the grounding path.
Solution Approach 2:
The circuit board member is designed to perform multiple functions: it supports the image reading section, provides electrical connections, and serves as the grounding path for the pressing plate. By making the circuit board member universal, the patent eliminates the need for dedicated grounding components, thereby reducing part count and simplifying the overall structure.
2Reliability
If the pressing plate is grounded through multiple plate springs and separate ground lines, then the pressing plate can be effectively discharged, but the production process becomes complicated
Solution Approach 1:
The grounding path is merged into the circuit board member itself through a printed electric circuit. This integration eliminates the need for separate grounding components and their associated assembly steps, thereby simplifying the production process while maintaining effective discharge functionality.
Solution Approach 2:
The patent replaces the mechanical grounding system (plate springs and ground lines) with an electrical circuit on the circuit board member. This substitution eliminates complex mechanical assembly requirements and simplifies the production process, as the grounding path is created through standard PCB manufacturing techniques rather than mechanical assembly.
3Reliability
If the pressing plate is grounded through multiple plate springs and separate ground lines, then the pressing plate can be effectively discharged, but production cost increases
Solution Approach 1:
The grounding function is merged into the circuit board member, eliminating the need for separate grounding components. This reduction in part count directly lowers production costs, as fewer components need to be manufactured, procured, and assembled, while the discharge effectiveness is maintained through the integrated electric circuit.
Solution Approach 2:
The circuit board member is designed to perform multiple functions including support, electrical connection, and grounding. This multi-functionality reduces the total number of components required, thereby lowering material costs, assembly costs, and overall production expenses while maintaining effective discharge capability.
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 solution allows for effective discharge of static charges from the pressing plate, preventing failures in the original transportation process while reducing production complexity and costs.
Implementation Method 1
a conductive member that electrically connects the pressing member to the electric circuit formed on the circuit board member to ground the pressing member through the electric circuit
Implementation Method 2
Even when the pressing member is charged as a result of sliding contact with the medium to be read, therefore, the charges can be eliminated by the simple structure
Data Source
AI summary
An image reading apparatus includes a transport path through which a medium to be read is transported, an image reading section disposed in a middle of the transport path and reading an image formed on the medium to be read that is transported along the transport path, a cover member that covers the image reading section and the transport path, a pressing member in which another end is supported by the cover member to cause one end to be swingable, thereby pressing the transported medium to be read against the image reading section, a circuit board member which is disposed on the cover member, and on which a grounded electric circuit is formed, and a conductive member which electrically connects the pressing member to the electric circuit formed on the circuit board member to ground the pressing member through the electric circuit.