Ink Jet Recording Method Using Temperature-Dependent Resin Particles
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Solution Overview
Problem
Ink jet recording methods face challenges in achieving high abrasion resistance, image quality, and anti-clogging properties while maintaining ejection stability and preventing nozzle clogging, especially when trying to quickly dry ink on the recording medium.
Innovation Solution
An ink jet recording method that involves heating the recording medium and using a specific aqueous ink composition containing resin particles that are dispersed at low temperatures but not at high temperatures, combined with a wind-blowing step to accelerate drying and improve image quality and anti-clogging properties.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If heating is applied to quickly dry the ink on the recording medium, then image quality is improved, but nozzle clogging occurs and anti-clogging property deteriorates
Solution Approach 1:
The patent changes the temperature parameter of resin particles to achieve different dispersibility states. Resin particles are designed to be dispersed at low temperatures (maintaining ejection stability and anti-clogging property) but become undispersed at high temperatures (forming rigid coating films for abrasion resistance and image quality). This temperature-dependent parameter change resolves the contradiction between quick drying and nozzle clogging prevention.
2Manufacturing precision
If heating is applied to accelerate ink drying, then image quality improves, but abrasion resistance cannot be maintained
Solution Approach 1:
The patent utilizes phase transition of resin particles from dispersed state at low temperature to undispersed aggregated state at high temperature. This phase transition enables the resin to form rigid coating films that provide both abrasion resistance and high image quality when heating is applied for quick drying, resolving the contradiction between these two properties.
3Ease of operation
If resin dispersibility is maintained at high temperature for cleaning, then wipeability improves, but abrasion resistance deteriorates
Solution Approach 1:
The patent introduces dynamic temperature control to change the state of resin particles. During recording, low temperature maintains resin dispersibility for good ejection stability. During cleaning, high temperature causes resin aggregation for improved wipeability. The recorded product benefits from the high-temperature state that forms rigid coating films for abrasion resistance. This dynamic state change resolves the contradiction between wipeability and abrasion resistance.
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 enhances abrasion resistance, image quality, and anti-clogging properties by forming a rigid coating film and preventing nozzle clogging, while maintaining ejection stability and improving wipeability.
Implementation Method 1
blowing wind to a surface of the recording medium in the attaching. By blowing the wind, drying of the ink can be accelerated
Implementation Method 2
blowing wind to a surface of the recording medium in the attaching
Implementation Method 3
heating a recording medium, attaching an aqueous ink composition to the recording medium heated in the heating
Data Source
AI summary
Provided is an ink jet recording method including heating a recording medium, attaching an aqueous ink composition to the recording medium heated in the heating by ejecting the aqueous ink composition through a nozzle, the aqueous ink composition containing water, a solvent, and resin particles, and blowing wind to a surface of the recording medium in the attaching. The resin particles include particular resin particles that are dispersed in water after leaving a mixture liquid of the particular resin particles to stand for 2 hours at 40° C. and are not dispersed in water after leaving the mixture liquid to stand for 1 hour at 80° C., the mixture liquid containing a composition of the solvent contained in the aqueous ink composition and the particular resin particles as a solid resin component in a mass ratio of 1:1.