Paper Particle Removal via Triboelectric Induction
Solution Overview
Problem
Conventional image formation devices suffer from image quality deterioration due to paper particles that are not effectively removed from the printing process, leading to smudging and scattering within the device.
Innovation Solution
A paper particle removing device is introduced, featuring a paper particle removing roller, a scraping member, a paper particle container, and a negatively-charged member that induces paper particles to be collected in the container, preventing them from scattering and improving image quality.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a scraper is used to remove paper particles from the roller, then paper particles can be collected in the collection box, but the paper particles may roil in the air and scatter inside the image formation device
Solution Approach 1:
A guide member is introduced as an intermediary component between the scraping member and the collection box. This guide member directs the paper particles scraped from the roller toward the collection box, preventing them from scattering in the air. The guide member acts as a mediator that channels the particles along a controlled path to the collection container.
Solution Approach 2:
The patent replaces the purely mechanical scraping system with a combined electrostatic-mechanical system. A charged member is introduced to generate electrostatic forces that assist in capturing and directing paper particles toward the collection box, supplementing the mechanical scraping action and improving particle control.
2Device complexity
If paper particles are not effectively removed, then the scraping mechanism remains simple, but image quality deteriorates due to smudging
Solution Approach 1:
The guide member serves as an intermediary that prevents paper particles from reaching the image formation unit. By directing particles toward the collection box before they can cause smudging, the system maintains image quality without requiring complex filtration or multiple scraping stages.
Solution Approach 2:
The introduction of the charged member provides an electrostatic mechanism to control paper particle movement, replacing purely mechanical control methods. This electrostatic assistance enables more effective particle removal and direction control, preventing image smudging while keeping the overall mechanism relatively simple.
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 captures and collects paper particles, preventing them from causing image smudging and ensuring better image quality by utilizing a negatively-charged member to attract and contain the particles within the paper particle container.
Implementation Method 1
a negatively-charged member arranged on the scraping member side with respect to a position where the paper particle removing roller contacts the scraping member and having a relative tendency in a triboelectric series to be negatively charged relative to the paper particles, the negatively-charged member inducing the paper particles scraped by the scraping member toward the paper particle container
Data Source
AI summary
A paper particle removing device is provided with a paper particle removing roller configured to contact a printing sheet to capture paper particles on the printing sheet, a scraping member arranged adjacent to the paper particle removing roller and configured to contact the paper particle removing roller to scrape the paper particles, a paper particle container arranged on a scraping member side with respect to a position where the scraping member contacts the paper particle removing roller, and configured to collect the paper particles scraped by the scraping member, and a negatively-charged member arranged on the scraping member side with respect to a position where the paper particle removing roller contacts the scraping member and having a relative tendency in a triboelectric series to be negatively charged relative to the paper particles, the negatively-charged member inducing the paper particles scraped by the scraping member toward the paper particle container.