Liquid Discharge Apparatus Surface Hardness Control
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Solution Overview
Problem
Existing liquid discharge apparatuses face challenges in maintaining long-term stable discharge of ink onto continuous media, particularly due to issues with surface property improvement and piling phenomena, which affect print quality and reliability over time.
Innovation Solution
A liquid discharge apparatus that applies a treatment liquid to a medium, followed by controlled drying to achieve a surface hardness of 0.07 GPa or more using nano-indentation, combined with a control device to optimize the supply amount and drying conditions, preventing piling and ensuring consistent print quality.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If a treatment liquid is applied to improve surface properties of the medium, then print quality is improved, but piling phenomenon occurs affecting long-term stable discharge
Solution Approach 1:
The patent applies a treatment liquid with specifically controlled supply amount parameters to achieve a surface hardness of 0.07 GPa or more after drying. By precisely controlling the treatment liquid supply amount and drying conditions, the patent optimizes surface properties while preventing piling phenomenon, thus resolving the contradiction between improved print quality and long-term stable discharge reliability
Solution Approach 2:
The patent employs a control device that monitors and adjusts the treatment liquid supply amount based on the desired surface hardness target of 0.07 GPa or more. This feedback mechanism ensures consistent surface property improvement while preventing the piling phenomenon that would compromise long-term discharge stability
2Strength
If the treatment liquid supply amount is increased to improve surface hardness, then surface hardness increases, but piling phenomenon worsens
Solution Approach 1:
The patent identifies and controls the critical parameter of treatment liquid supply amount to achieve the optimal surface hardness of 0.07 GPa or more. By maintaining this specific hardness threshold through precise parameter control, the patent prevents piling phenomenon while ensuring adequate surface strength for reliable ink discharge over extended operation periods
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 solution effectively prevents piling and maintains high surface hardness and elasticity, ensuring reliable and long-term stable ink discharge and improved print quality by controlling the pre-treatment liquid supply and drying conditions.
Implementation Method 1
a drying device to dry the treatment liquid applied to the medium
Data Source
AI summary
A liquid discharge apparatus includes a device to apply a treatment liquid to a medium; a drying device to dry the treatment liquid applied to the medium; a device to apply a liquid containing a colorant to the medium on which the treatment liquid has been applied; and a control device. The control device controls a supply amount of the treatment liquid to an amount such that a surface hardness of the medium is 0.07 GPa or more as measured by nano indentation after the drying device dries a surface of the medium.