Destaticizing Device Undulation Suppression
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Solution Overview
Problem
Conventional destaticizing devices in electrophotographic image forming apparatuses face challenges in effectively suppressing undulation (sag) of the destaticizing member and ensuring easy assembly and disassembly, while maintaining effective destaticization of recording media.
Innovation Solution
The destaticizing device incorporates a destaticizing member with protruding needles, a holding member, and a body portion with snap-fit engaging claws and bosses, allowing for secure attachment and easy assembly/disassembly, and features a design that suppresses undulation by utilizing a C-shaped attachment recess with increasing gap, ensuring stable operation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the destaticizing member is secured with screws, then the attachment is strong and reliable, but the assembly and disassembly processes become time-consuming and complex
Solution Approach 1:
The attachment structure is divided into multiple components: attachment holes in the destaticizing member, bosses on the holding member that insert into the holes, and engaging claws that snap-fit into engaged portions. This segmentation allows for quick assembly while maintaining reliability through multiple attachment points.
Solution Approach 2:
The destaticizing member is designed to be easily removable and replaceable. The snap-fit engagement allows the member to be quickly detached and reattached without tools, enabling easy maintenance and replacement of worn or damaged destaticizing members.
2Stability of the object's composition
If double-sided tape is used to suppress undulation, then the destaticizing member remains stable, but the attachment strength is insufficient and the assembly process becomes messy
Solution Approach 1:
The holding member features a C-shaped attachment recess with a gap that increases from the upstream end toward the downstream end. This curved, tapered structure allows the destaticizing member to be inserted smoothly while providing progressive clamping force that suppresses undulation without requiring strong adhesive bonds.
Solution Approach 2:
The attachment system is divided into multiple functional elements: the C-shaped recess for positioning and undulation suppression, bosses for structural support, and engaging claws for secure attachment. This segmentation allows each element to perform its specific function optimally without relying on weak adhesive bonds.
3Stability of the object's composition
If the destaticizing member is made rigid to maintain shape, then undulation is reduced, but the assembly and disassembly become difficult
Solution Approach 1:
The C-shaped attachment recess with increasing gap creates a tapered insertion path that guides the rigid destaticizing member into place. The curved geometry accommodates the rigid member's shape while allowing easy insertion and removal through the gradually opening gap.
Solution Approach 2:
The engaging claws are designed with elastic properties, allowing them to flex during assembly and disassembly. This dynamic characteristic enables the rigid destaticizing member to be easily attached and detached, as the claws can temporarily deform to accommodate the member and then spring back to secure it.
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 ensures effective destaticization of recording media, suppresses undulation in the destaticizing member, and facilitates easy assembly and disassembly, enhancing the operational stability and efficiency of the destaticizing device.
Implementation Method 1
When a voltage is applied to the destaticizing member, a discharge current passes from the destaticizing needles to the recording medium that has passed across the image carrier; the recording medium is thus destaticized and is separated from the image carrier.
Data Source
AI summary
A destaticizing device has a destaticizing member, a holding member, and a body portion. The destaticizing member has a plurality of destaticizing needless. The holding member holds the destaticizing member. The body portion has the holding member removably attached to it. The destaticizing member has attachment holes for attachment to the holding member. The holding member has a plurality of bosses inserted in the attachment holes respectively and an engaging portion in a snap-fit shape for attachment to the body portion. The body portion has an engaged portion with which the engaging portion is engaged.