printer
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Solution Overview
Problem
Existing printers face challenges in accurately detecting the height of fabric substrates during printing, which can lead to interference between the printer head and the fabric, resulting in poor print quality and increased mist generation.
Innovation Solution
The printer incorporates a height detector system with two detection heights, allowing it to accurately determine the surface height of the fabric. This system includes a light emitter and receiver pair at each detection height, enabling precise detection of the fabric's height and preventing head interference.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If a single height detector is used, then the device complexity is low, but the measurement precision of fabric height is insufficient
Solution Approach 1:
The detection system is segmented into multiple height detectors positioned at different vertical levels. Each detector monitors a specific height zone, and their combined readings provide comprehensive fabric height measurement. This segmentation allows accurate detection of fabric height variations without requiring a single complex detector, resolving the contradiction between measurement precision and device complexity.
2Manufacturing precision
If the printer head moves closer to the fabric, then the print quality improves, but the risk of head-fabric interference increases
Solution Approach 1:
The multiple height detectors provide real-time feedback about fabric height and position to the control system. Based on this feedback, the printer head position is dynamically adjusted to maintain an optimal distance from the fabric surface. This feedback mechanism enables high-quality printing at close proximity while preventing harmful head-fabric interference, resolving the technical contradiction.
3Object-generated harmful factors
If the printer operates without height detection, then the device complexity is low, but mist generation increases and print quality deteriorates
Solution Approach 1:
The height detectors perform preliminary detection of fabric height and position before the printing operation begins. The control system uses this advance information to pre-adjust the printer head position and printing parameters. This preliminary action prevents mist generation and quality issues before they occur, rather than requiring complex real-time intervention during printing, thus resolving the contradiction between harmful factors and 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 height detection system effectively prevents the printer head from contacting the fabric, reducing mist generation and ensuring consistent print quality across various fabric thicknesses.
Implementation Method 1
a light emitter and receiver pair at each detection height, enabling precise detection of the fabric's height
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.