Portable Printer With Preset Nozzle-Roller Height Adjustment
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Solution Overview
Problem
Existing printers face challenges in maintaining a consistent distance between the nozzle and the skin or paper surface, leading to variations in printed images due to the different properties of these surfaces, and require adaptable roller and nozzle structures for both soft (skin) and hard (paper) targets.
Innovation Solution
A portable printer with adjustable rollers and nozzles that maintain a consistent distance by using a seating part and rollers at the front and rear of the nozzle, adjustable via elastic members and operating members to accommodate both soft and hard surfaces, and an optical sensor to align the center line with the nozzle.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If a fixed nozzle structure is used, then the device complexity is reduced, but the manufacturing precision deteriorates due to inconsistent distance from the skin surface
Solution Approach 1:
The patent implements a movable nozzle structure that can adjust its position vertically to maintain a constant distance from the skin surface. The nozzle is coupled with a moving member that allows it to move in the vertical direction, enabling dynamic adaptation to skin surface irregularities and ensuring consistent printing quality across different body parts.
Solution Approach 2:
The patent incorporates a distance detection mechanism that continuously monitors the gap between the nozzle and skin surface. This feedback system detects variations in distance and triggers the moving member to adjust the nozzle position, creating a closed-loop control system that maintains optimal printing distance automatically.
2Device complexity
If the printer is designed for hard surfaces like paper, then the device complexity is simplified, but the adaptability to soft surfaces like skin deteriorates
Solution Approach 1:
The patent designs a universal printer structure that can handle both hard surfaces (paper) and soft surfaces (skin). The key is the movable nozzle coupled with the moving member, which allows the same basic structure to adapt to different surface types by adjusting the vertical position, eliminating the need for separate specialized printers.
Solution Approach 2:
The movable nozzle structure with vertical adjustment capability enables the printer to dynamically adapt its configuration based on the surface being printed on. The moving member allows real-time position changes to accommodate the compliance differences between hard paper surfaces and soft skin surfaces.
3Manufacturing precision
If the nozzle is positioned closer to the skin, then the manufacturing precision improves, but the device complexity increases due to need for adjustment mechanisms
Solution Approach 1:
The patent employs a movable nozzle structure that can dynamically adjust its vertical position to maintain optimal printing distance. The nozzle is coupled with a moving member that enables precise position control, allowing the system to achieve and maintain the close proximity needed for high-quality printing while adapting to various skin contours.
Solution Approach 2:
The distance detection mechanism provides continuous feedback on the gap between nozzle and skin, enabling automatic adjustment of the nozzle position. This feedback loop ensures the nozzle maintains the optimal close distance for image clarity without requiring manual intervention or overly complex mechanical systems.
Data Source
AI summary
A portable printer including a body accommodating a cartridge including a printing material, a nozzle configured to deliver the printing material to a target, a seating part facing a surface of the target, a roller on a lower portion of the body such that the body is moved on the surface of the target, and a printing adjustment part configured to maintain a height difference between the nozzle and the roller in a first height or a second height, wherein the printing adjustment part is configured to preset a height difference between the nozzle and the roller.