Antimicrobial Toner Patterning for Lower-Cost Image Forming
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Solution Overview
Problem
Image forming apparatuses using antimicrobial toner face the challenge of high costs due to the use of antimicrobial agents, while maintaining effective antimicrobial properties.
Innovation Solution
An image forming apparatus that uses a combination of antimicrobial and non-antimicrobial toners, forming a composite image with an antimicrobial pattern using antimicrobial toner, and strategically positioning antimicrobial regions based on usage patterns to minimize toner consumption.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If antimicrobial toner is used for all toner images, then antimicrobial effect is maximized, but cost increases significantly
Solution Approach 1:
The patent applies local quality by differentiating the antimicrobial property across different regions of the printed output. Antimicrobial toner is selectively applied only to specific areas (such as borders, headers, footers, or background regions) where contact with hands or surfaces is most likely to occur, while non-antimicrobial toner is used for the main image content. This localized approach maintains antimicrobial effectiveness in high-risk areas while significantly reducing overall antimicrobial toner consumption and cost.
Solution Approach 2:
The patent segments the toner application process into distinct categories: antimicrobial toner for specific functional areas and non-antimicrobial toner for other areas. The control unit divides the printing task based on the predetermined pattern, assigning different toner types to different segments of the output. This segmentation allows the system to optimize both antimicrobial coverage and cost efficiency by matching toner type to functional requirement.
2Reliability
If antimicrobial pattern is formed on entire sheet, then antimicrobial coverage is maximized, but toner consumption increases
Solution Approach 1:
Instead of applying antimicrobial toner uniformly across the entire sheet, the system applies it locally only to predetermined patterns such as borders, margins, or specific zones where contact is most likely to occur. This localized application maintains effective antimicrobial coverage in critical areas while minimizing unnecessary toner consumption in areas that are less likely to be touched or handled.
Solution Approach 2:
The patent applies partial action by providing antimicrobial coverage only where needed rather than comprehensive coverage throughout the entire sheet. The control unit determines the appropriate extent of antimicrobial pattern formation based on the document type and usage scenario, applying antimicrobial toner to the minimum necessary areas to achieve effective protection while avoiding excessive consumption.
3Reliability
If antimicrobial toner is used for text and images, then antimicrobial effect is maintained, but printing quality and readability may be compromised
Solution Approach 1:
The patent maintains printing quality by using non-antimicrobial toner for text and image content where visual quality is paramount, while reserving antimicrobial toner for background or border areas where antimicrobial effect is the primary function. This differentiation ensures that the main content remains crisp, readable, and visually accurate, while still providing antimicrobial protection in appropriate locations.
Solution Approach 2:
The system segments the printing process to apply different toner types to different elements: antimicrobial toner for structural/frame elements and non-antimicrobial toner for content elements. This segmentation allows each element to be optimized for its specific purpose, with text and images prioritizing visual quality and structural elements prioritizing antimicrobial function.
Data Source
AI summary
An image forming apparatus includes: a forming unit configured to form an image on a sheet by forming a plurality of toner images using a plurality of types of toner, and transfer the plurality of toner images onto the sheet, or transfer the plurality of toner images onto the sheet via an intermediate transfer member; and a controller configured to control the forming unit to form a formed image and an antimicrobial pattern on the sheet based on first image data representing the formed image, wherein at least one first toner out of the plurality of types of toner is antimicrobial toner that includes an antimicrobial agent, at least one second toner out of the plurality of types of toner is non-antimicrobial toner that does not contain the antimicrobial agent, and the antimicrobial pattern is formed using the first toner.