Printer
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Solution Overview
Problem
Printers face challenges in accurately detecting the height of fabric substrates during printing, leading to potential ink mist issues and interference between the print head and fabric, which can result in suboptimal printing quality and equipment malfunction.
Innovation Solution
A printer system equipped with a dual-height detection mechanism using light emitters and receivers to determine the surface height of the fabric, allowing for precise adjustment of the platen position to prevent ink mist and ensure proper printing alignment.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If a single-height detection mechanism is used, then the device complexity is reduced, but the manufacturing precision of printing deteriorates due to inaccurate fabric height detection
Solution Approach 1:
The detection mechanism is segmented into multiple detection units positioned at different heights. Each detection unit independently detects fabric presence at its specific height level, enabling accurate determination of fabric surface height through multi-level detection rather than relying on a single detection point.
Solution Approach 2:
The detection system transitions from single-point detection to multi-level spatial detection by adding the height dimension. Multiple detection units are arranged vertically at different heights, creating a three-dimensional detection field that accurately captures fabric surface variations in the vertical dimension.
2Manufacturing precision
If the print head is positioned close to the fabric, then the printing precision is improved, but harmful factors increase due to ink mist generation and potential head-fabric interference
Solution Approach 1:
The multi-height detection units perform preliminary detection of fabric surface height before the printing process begins. This advance detection allows the system to pre-adjust the print head position or printing parameters to optimal values, preventing ink mist generation and head-fabric interference before they occur.
Solution Approach 2:
The detection units provide real-time feedback on fabric surface height to the control system. Based on this feedback, the system dynamically adjusts the print head position and printing parameters to maintain optimal spacing between the head and fabric surface, thereby preventing ink mist generation while preserving printing precision.
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 dual-height detection system effectively prevents ink mist and ensures accurate printing by maintaining the optimal gap between the print head and fabric, enhancing printing quality and preventing equipment malfunctions.
Implementation Method 1
a light emitter 80A and a light receiver 80B
Data Source
AI summary
A printer includes a liquid discharge head configured to discharge a liquid to a print target, a holder configured to hold the print target, and a height detector configured to detect the print target on the holder at a first height and at a second height lower than the first height.