Image Formation Apparatus Triboelectric Cut Matter Collection
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Solution Overview
Problem
The performance of existing image formation apparatuses, such as electrophotographic image formation apparatuses, is insufficient for stable image formation on mediums, particularly due to issues with paper powder causing image defects.
Innovation Solution
An image formation apparatus is designed with a cutting unit having a cutting member with a polarity opposite to the medium in the triboelectric series, and a pressure contact unit with a first pressure contact member opposite to the medium's polarity and a second member with a shifted polarity, facilitating stable image formation by optimizing the collection of cut matter.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a conventional electrophotographic image formation apparatus is used, then image formation speed is fast, but image stability is poor due to paper powder causing image defects
Solution Approach 1:
The invention converts the harmful effect of paper powder generation during cutting into a beneficial effect by using the triboelectric charge on the cut medium to attract and collect paper powder through a charged roller, thereby preventing image defects while maintaining fast electrophotographic image formation
Solution Approach 2:
The invention introduces a charged roller as an intermediary component between the cutting unit and image formation unit. This roller collects paper powder generated during cutting by attracting it with its opposite charge, preventing the powder from contaminating the image formation area and causing defects
2Reliability
If the polarity of pressure contact members is set opposite to the medium, then cut matter collection is improved, but image formation stability requires additional polarity adjustment
Solution Approach 1:
The invention applies different polarity characteristics to different components: the first pressure contact member has polarity opposite to the medium for effective cut matter collection, while the second pressure contact member has polarity shifted toward the medium's polarity to optimize both collection and image formation stability, creating local quality variations in the pressure contact unit
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 enables stable image formation on mediums by effectively collecting cut matter, reducing its impact on image quality and ensuring sharper images with improved performance.
Implementation Method 1
a cutting unit (40) including a cutting member (44) that cuts the medium (M), a polarity of the cutting member being opposite to a polarity of the medium (M) in a triboelectric series
Implementation Method 2
a first pressure contact member (52) that is put in pressure contact with the medium (M) cut by the cutting unit (40), a polarity of the first pressure contact member being opposite to the polarity of the medium (M) in a triboelectric series
Data Source
AI summary
An image formation apparatus according to an embodiment may include: a cutting unit including a cutting member, a polarity of the cutting member being opposite to a polarity of the medium in a triboelectric series; an image formation unit that forms an image on the medium cut by the cutting unit; and a pressure contact unit arranged between the cutting unit and the image formation unit, and including a first pressure contact member and a second pressure contact member that are put in pressure contact with each other across the medium cut by the cutting unit, a polarity of the first pressure contact member being opposite to the polarity of the medium in a triboelectric series, a polarity value of the second pressure contact member shifted from a polarity value of the first pressure contact member toward the polarity of the medium in the triboelectric series.