Textile Printing Liquid Application Control for Stop-Start Drying
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Solution Overview
Problem
The existing inkjet recording apparatuses do not effectively manage liquid application during multi-pass textile printing methods, leading to excessive liquid application when the textile is stopped and insufficient drying, resulting in printing failures.
Innovation Solution
A printing apparatus comprising a conveyor, a liquid applier, a presser, a printer, and a hardware processor that controls the liquid applier to apply a smaller amount of liquid per unit time during textile stops compared to during conveyance, ensuring appropriate liquid application and drying.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If the textile is stopped during multi-pass printing to perform printing operations, then printing quality can be improved, but excessive liquid is applied during the stop causing insufficient drying and printing failure
Solution Approach 1:
The liquid application amount is dynamically adjusted based on the conveyance state of the textile. During conveyance, liquid is applied at a higher rate to suppress fluff, while during stop periods for printing, the liquid application is reduced or paused to prevent over-saturation and ensure proper drying, thus resolving the contradiction between printing quality and printing success rate
Solution Approach 2:
The liquid application parameters (flow rate, duration) are changed according to the operational phase. The system transitions between different liquid application modes: high application during conveyance for fluff suppression, and reduced/zero application during stops for printing to allow adequate drying time, thereby maintaining both printing quality and reliability
2Manufacturing precision
If liquid is applied to suppress fluff of textile, then image quality can be improved, but printing failure occurs due to insufficient drying when textile is stopped
Solution Approach 1:
The liquid application is implemented as a periodic action synchronized with the conveyance cycle. Liquid application occurs periodically during conveyance phases when the textile moves through the system, and is interrupted during stop phases when printing occurs, allowing drying to proceed without continuous liquid addition, thus improving both image quality and drying efficiency
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 enables appropriate liquid application to suppress textile fluff, preventing excessive liquid application during stops and ensuring efficient drying, thus preventing printing failures and maintaining image quality.
Implementation Method 1
an inkjet recording apparatus is known in which the stiffness of the fluff is weakened by applying a liquid to the textile and humidifying the textile
Implementation Method 2
the fluff is flattened and compressed by pressurizing the textile
Data Source
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AI summary
Disclosed is a printing apparatus (1) including: a conveyer (10) that conveys a textile (T); a liquid applier (20) that applies a liquid to the textile (T); a presser (30) that is disposed downstream of the liquid applier (20) in a textile conveyance direction and presses the textile (T); a printer (40) that is disposed downstream of the presser (30) in the textile conveyance direction and performs printing on the textile (T); and a hardware processor (100) that controls the liquid applier (20) such that, when conveyance of the textile (T) by the conveyer (10) is stopped, an amount of the liquid applied to the textile (T) per unit time during the stop of the textile (T) is smaller than the amount of the liquid applied to the textile (T) per unit time during the conveyance of the textile (T).