Printing Apparatus Destaticization Section Positioning
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Solution Overview
Problem
Printing apparatuses face issues with reduced electrostatic adsorption force and printing quality due to foreign matter accumulation on destaticization brushes, leading to decreased efficiency and potential contamination of the printing surface.
Innovation Solution
A printing apparatus with a destaticization section positioned upstream of the printing head, an operation mechanism to change the contact location with the printing medium, and a cleaning section that operates outside the transport belt's path to prevent foreign matter re-adhesion, ensuring efficient charge removal and maintaining printing quality.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the destaticization brush continuously contacts the printing surface to remove electric charge, then the removal efficiency of electric charge is improved, but foreign matter accumulates on the brush leading to reduced removal efficiency over time
Solution Approach 1:
The destaticization brush is configured to move in the width direction of the printing medium, changing its contact position periodically. This dynamic movement prevents foreign matter from accumulating at a single location on the brush, maintaining continuous effective contact with the printing surface while distributing wear and contamination across different brush regions.
Solution Approach 2:
The brush performs periodic movement in the width direction, alternating between different contact positions. This periodic action allows the brush to systematically cover different areas of the printing surface while preventing sustained accumulation of foreign matter at any single brush location, thereby maintaining long-term removal efficiency.
2Reliability
If the destaticization brush is positioned to contact the printing surface, then electric charge removal is effective, but the brush may contaminate the printing surface with accumulated foreign matter
Solution Approach 1:
By making the brush position dynamic in the width direction rather than fixed, the system ensures that even when foreign matter accumulates on portions of the brush, those contaminated areas do not continuously contact the same printing surface location. This dynamic repositioning prevents contamination transfer while maintaining effective charge removal across the printing surface.
3Duration of action of stationary object
If a cleaning member is used to remove foreign matter from the destaticization brush, then the brush longevity is improved, but the cleaning process may cause foreign matter to re-adhere to the printing medium or printing section
Solution Approach 1:
The brush performs preliminary movement to change its contact position before foreign matter can significantly accumulate and cause contamination issues. This proactive repositioning reduces the frequency and intensity of cleaning required, and when cleaning does occur, the brush is already positioned to minimize the risk of foreign matter re-adhesion to the printing surface.
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 suppresses reductions in electrostatic adsorption force and printing quality by regularly changing the destaticization section's contact location and cleaning it outside the transport belt's path, preventing foreign matter re-adhesion and improving the longevity of the destaticization section.
Implementation Method 1
a transport belt, to which a printing medium is electrostatically adsorbed, and which operates in a manner that transports the printing medium in a transport direction
Implementation Method 2
a destaticization section that removes an electric charge from the printing surface by coming into contact with the printing surface of a printing medium
Data Source
AI summary
In a printing apparatus, an end of a destaticization section in a definition direction is positioned further on an outer side than an end of a transport belt in the definition direction. In addition, the printing apparatus is provided with an operation mechanism section that changes a location of the destaticization section that comes into contact with a sheet of paper, which is electrostatically adsorbed to the transport belt, by operating the destaticization section.