Paper Dust Transport With Variable Roller Contact Pressure
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Solution Overview
Problem
Existing paper dust removal devices face issues with paper dust lumps forming along the axial direction of the paper dust removal roller, making it difficult to transport the dust effectively.
Innovation Solution
A transport device with a paper dust attracting roller and a paper dust removal section configured to have varying contact pressures in the longitudinal direction, combined with a paper dust transport section using an auger screw feeder to prevent lump formation and facilitate efficient dust removal.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If the paper dust removal roller uses uniform contact pressure along its axial direction, then the structure is simple, but paper dust lumps form and become difficult to transport
Solution Approach 1:
The paper dust removal roller is designed with non-uniform contact pressure distribution along its axial direction. The contact pressure is higher at certain locations and lower at others, which prevents paper dust from forming large lumps while maintaining structural simplicity. This local variation in contact pressure ensures efficient paper dust removal and transport.
2Productivity
If the paper dust removal roller uses varying contact pressure in longitudinal direction, then paper dust lump formation is prevented, but device complexity increases
Solution Approach 1:
The varying contact pressure is achieved through localized structural features of the paper dust removal roller, such as variations in roller diameter or contact force application points along the axial direction. This allows different regions of the roller to exert appropriate contact pressure without requiring complex external control mechanisms, thus maintaining relatively simple device architecture.
Solution Approach 2:
The contact pressure distribution is designed to be dynamic rather than static, allowing the paper dust removal roller to adapt its contact pressure naturally during rotation. This dynamic characteristic enables effective paper dust removal while avoiding the need for complex active control systems.
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
The solution effectively prevents large paper dust lumps, ensuring smooth transportation and efficient removal of dust, allowing for stable medium transport and high-quality image formation.
Implementation Method 1
a paper dust attracting roller that is arranged at a position facing the transport roller and that attracts paper dust clinging to the medium
Implementation Method 2
a paper dust removal section that contacts the paper dust attracting roller and removes the paper dust attracted by the paper dust attracting roller from the paper dust attracting roller
Implementation Method 3
a paper dust transport section that is provided at a position adjacent to the paper dust removal section and that transports the paper dust removed by the paper dust removal section
Data Source
AI summary
A transport device 3 includes a transport roller 53 that transports a medium P along a transport path TR of the medium P; a paper dust attracting roller 54 that is arranged at a position facing the transport roller 53 and that attracts paper dust clinging to the medium P; a paper dust removal section 55 that contacts the paper dust attracting roller 54; and a paper dust transport section 60 that is provided at a position adjacent to the paper dust removal section 55 and that transports the paper dust removed by the paper dust removal section 55, wherein the paper dust attracting roller 54 and the paper dust removal section 55 are configured such that contact pressure when the paper dust attracting roller 54 and the paper dust removal section 55 contact each other differs in an X-axial direction.