Liquid discharge device
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Solution Overview
Problem
Existing inkjet recording devices for fabrics face challenges in efficiently arranging their components, leading to larger devices, and struggle to ensure deep penetration of pretreatment liquids into the fabric, resulting in variations in recording quality.
Innovation Solution
A liquid discharge device with a conveyance belt and pressure roller system that adheres pretreatment liquid to the fabric, using a blade and adjustable pressure roller to ensure deep penetration and efficient coating, allowing for a compact design and improved recording quality.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If each constitutional member is arranged clearly divided in the sequence of the roll maintaining unit, the pretreatment unit, the adjustment unit, the recording unit, the adjustment unit, and the post treatment unit according to the flow of the fabric conveyance, then the recording process is systematic and organized, but the device becomes longer and larger
Solution Approach 1:
The patent combines the pretreatment unit and recording unit into a single integrated device. The fabric is conveyed through a compact arrangement where the pretreatment roller applies liquid directly at the recording position, eliminating the need for separate, sequentially arranged units. This merging of functions reduces the overall device length while maintaining systematic operation.
2Device complexity
If there is only coating of the pretreatment liquid with a roller, then the device structure is simple, but it is difficult to have the pretreatment liquid penetrate deeply into the interior of the fabric
Solution Approach 1:
The patent introduces a blade as an intermediary element between the pretreatment roller and the fabric. The blade scrapes excess liquid and forces the pretreatment liquid to penetrate deeper into the fabric by applying mechanical pressure. This intermediary mechanism enhances penetration depth without significantly complicating the overall device structure.
3Manufacturing precision
If a blade is provided to scrape the surface of the conveyance belt, then the pretreatment liquid penetration is improved, but the device complexity increases
Solution Approach 1:
The blade serves multiple functions: it scrapes excess pretreatment liquid from the conveyance belt surface, forces liquid penetration into the fabric, and helps control the amount of liquid applied. By making this single component multi-functional, the patent achieves improved liquid penetration uniformity without proportionally increasing device complexity.
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 deeper penetration of pretreatment liquids into the fabric, stabilizing recording quality and preventing surface-only ink application, while maintaining a compact device layout.
Implementation Method 1
a pressure roller that sticks the media to the conveyance belt
Implementation Method 2
a conveyance belt that has media stuck to an adhesive layer on its surface
Data Source
Figure 1
Figure 2
Figure 3
AI summary
The liquid discharge device (1A) is equipped with a conveyance belt (9) configured to stick a medium (M) on an adhesive layer (7) of a surface of the conveyance belt and convey the medium; an attachment part (17) configured to adhere a pretreatment liquid (L) to the conveyance belt; a roller (15) provided at a downstream position relative to the attachment part in a movement path (5) of the conveyance belt, the roller being configured to press the medium to the conveyance belt in a state with the pretreatment liquid adhered to the conveyance belt; and a blade (47) configured to adjust a coating width of the pretreatment liquid.