Inkjet Recording Method Using Coagulant Processing Solution
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing ink jet recording methods face challenges in achieving excellent abrasion resistance and image quality, particularly when using light ink compositions with low coloring material content on low-absorbable or non-absorbable recording media, as they tend to lack sufficient ink adhesion and durability.
Innovation Solution
A recording method that combines a processing solution with coagulants, a light ink composition, and a dark ink composition, both within the same color system but with different color densities, along with a clear ink composition containing resin, which adheres to the recording medium to enhance image durability and quality.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If a light ink composition with low coloring material content is used on low-absorbable or non-absorbable recording media, then the image quality and color density are improved, but the ink adhesion and abrasion resistance deteriorate
Solution Approach 1:
The patent introduces a processing solution containing coagulants as an intermediary substance between the light ink composition and the recording medium. This processing solution promotes coagulation of ink constituents, forming a stable ink film that adheres well to low-absorbable or non-absorbable recording media, thereby resolving the adhesion problem without compromising image quality
Solution Approach 2:
The patent uses a composite approach by combining light ink composition with specific resin components and processing solutions containing coagulants. This composite system creates a multi-layered structure where the coagulated ink forms a durable film that maintains both high image quality and strong adhesion on challenging recording media
2Reliability
If a processing solution with coagulants is used to improve ink adhesion, then the abrasion resistance is improved, but the complexity of the recording process increases
Solution Approach 1:
The patent merges the processing solution application with the ink ejection process, where both the light ink composition and processing solution are ejected from the same or adjacent nozzles in a coordinated manner. This integration reduces process complexity while maintaining the benefits of coagulation-induced adhesion improvement
3Manufacturing precision
If multiple ink compositions with different color densities are used, then the image quality is improved, but the manufacturing complexity increases
Solution Approach 1:
The patent applies local quality by using light ink composition specifically in regions requiring high image quality and fine detail, while using dark ink composition in regions requiring strong adhesion and durability. The processing solution is applied selectively to enhance coagulation where needed, optimizing both image quality and manufacturability through spatially differentiated ink application
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 method achieves improved abrasion resistance and image quality by ensuring adequate ink adhesion and durability, even on low-absorbable or non-absorbable media, by using a combination of ink compositions and a processing solution that reacts to form a stable ink film.
Implementation Method 1
causing a processing solution that contains a coagulant for coagulating constituents of an ink composition to adhere to a recording medium
Data Source
AI summary
A recording method includes: causing a processing solution that contains a coagulant for coagulating constituents of an ink composition to adhere to a recording medium; causing an ink composition that includes a light ink composition and a dark ink composition that belong to a same color system and have mutually different color densities to adhere to the recording medium; and causing a clear ink composition that includes resin to adhere to the recording medium.