Handheld Printer Head Temperature Control via Motion Sensors
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Solution Overview
Problem
Conventional handheld printers face safety issues due to the risk of users touching the hot head before it has cooled down, which can lead to injuries, especially when heating the head for printing purposes.
Innovation Solution
A handheld inkjet printing liquid discharge apparatus equipped with a navigation sensor and a gyro sensor to control the temperature of the inkjet recording head, using a preheater and heater control system that ensures the head is at a safe temperature for printing while minimizing the risk of user contact.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If the head is heated to an appropriate temperature range before printing, then print quality is improved, but the risk of user injury from touching the hot head increases
Solution Approach 1:
The system performs preliminary heating of the head to a safe temperature range (40-60°C) before printing begins. This preliminary action ensures that the head reaches the appropriate temperature for quality printing while maintaining safety standards, resolving the contradiction between print quality and user safety.
Solution Approach 2:
The system continuously monitors the head temperature and adjusts heating control based on feedback from temperature sensors. This feedback mechanism ensures the head maintains the optimal temperature range for printing while preventing excessive heating that could cause user injury, thus resolving the technical contradiction.
2Reliability
If the head temperature is monitored and controlled, then safety is improved, but device complexity increases
Solution Approach 1:
The system incorporates automatic temperature monitoring and control that operates autonomously without requiring manual intervention. The controller automatically adjusts heating based on sensor feedback, maintaining safety while minimizing the complexity of user interaction with the system.
3Manufacturing precision
If heating control is implemented before printing, then print quality is ensured, but the time required before printing can begin increases
Solution Approach 1:
The system applies partial heating to reach the minimum necessary temperature range (40-60°C) required for quality printing, rather than excessive heating. This optimized heating approach ensures print quality while minimizing the time required before printing can begin.
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 system effectively maintains the inkjet recording head at a safe temperature for printing, improving safety by preventing user contact with the hot head and ensuring better print quality by maintaining the head within a recommended temperature range.
Implementation Method 1
it is desirable to heat a head portion to an appropriate temperature range of, for example, 40 to 60 degrees centigrade
Implementation Method 2
a head portion to an appropriate temperature range... in order to ensure print quality
Data Source
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AI summary
A liquid discharge apparatus (10) includes a head (19) to discharge liquid to print an image according to image data on a recording medium while the apparatus is moved, a sensor (20; 30) to detect movement of the apparatus in a predetermined period and output movement information of the apparatus in at least one of a movement amount and an angular velocity, a heater (203H) to heat the head (19), and a temperature sensor (202) to detect a temperature of the head (19). The apparatus further includes a discharge control unit (105,111) to instruct liquid discharge from the head (19) based on the image data and the movement information from the sensor (20; 30), a float detecting unit (14) to detect floating of the liquid discharge apparatus (10) based on a detection result generated by the sensor (20; 30); and a heater control unit (204) to control heating of the head (19) based on a detection result generated by the float detecting unit (14).