Line Width Correction and Tailing Suppression in Image Forming
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Solution Overview
Problem
Existing image processing techniques for electronic photograph-type image forming apparatuses face challenges in effectively suppressing the tailing phenomenon, where toner is scattered due to rapid paper heating in the fixing process, leading to deteriorated image quality as independent tailing suppression and line width correction processes can interfere with each other.
Innovation Solution
A parallel configuration of line width correction and tailing suppression processing units, where the tailing suppression processing unit adjusts its culling pattern based on the edge region changes caused by line width correction, ensuring effective tailing suppression without compromising image quality.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If line width correction processing expands the edge region, then printing quality of characters and lines is improved, but the tailing suppression effect deteriorates because the culling processing is performed at a position away from the lower end of the edge
Solution Approach 1:
The patent applies dynamics by making the culling pattern adjustable and adaptable. The determination unit dynamically selects or modifies the culling pattern based on the line width correction specification, allowing the tailing suppression processing to adapt to the expanded edge region and maintain effective tailing suppression while preserving printing quality.
Solution Approach 2:
The patent changes parameters by adjusting the culling pattern parameters according to the line width correction specification. The determination unit modifies the culling pattern to account for the expanded edge region, changing the positioning and density of culled pixels to ensure tailing suppression remains effective despite the line width expansion.
2Productivity
If parallel configuration is used for tailing suppression and line width correction processing, then processing efficiency is improved, but image quality deteriorates due to interference between independent processings
Solution Approach 1:
The patent implements feedback by having the determination unit receive information about the line width correction specification and use it to adjust the culling pattern accordingly. This feedback mechanism ensures that the parallel processing units coordinate their actions, with the tailing suppression processing adapting to the effects of line width correction, thereby maintaining image quality while preserving processing efficiency.
Solution Approach 2:
The determination unit serves multiple functions: it determines the culling pattern for tailing suppression, adjusts this pattern based on line width correction specifications, and ensures coordination between the parallel processing units. This multi-functionality allows the system to maintain both processing efficiency and image quality through a single coordinating component.
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 allows for effective tailing suppression while maintaining image quality by dynamically adjusting the culling pattern in response to line width correction, reducing the risk of deteriorated image quality due to misaligned processing.
Implementation Method 1
the paper 201 is rapidly heated while passing through a high-temperature fixing unit 301
Implementation Method 2
to thereby cause the blowout from the paper 201 of the steam 302 of the water in the paper 201
Data Source
AI summary
An image forming apparatus is provided that prevents a deteriorated print quality even if a line width correction processing and a tailing suppression processing are configured in parallel. The image forming apparatus comprises a determination unit configured to determine a tailing suppression processing specification depending on a line width correction setting for detecting an edge neighboring region of an input image subjected to a line width correction processing. The tailing suppression processing specification is used to perform a tailing suppression processing on the input image.