Handheld Printer Head Shift Reduction via Component Arrangement
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Solution Overview
Problem
Handy mobile printers experience shifting of the printing head during manual movement due to an offset barycenter caused by the placement of the position detection sensor between the battery and the printing head, leading to reduced printing precision.
Innovation Solution
The printing apparatus rearranges its components so that the battery housing section, head placement section, and movement measurement section are ordered in a way that the printing head and battery are closer together, with the movement measurement section positioned further from the barycenter, reducing the shift of the printing head during manual movement.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If the position detection sensor is placed between the battery and the printing head, then the barycenter is located away from the printing head, but the printing head becomes easily shifted during manual movement
Solution Approach 1:
The patent applies dimensional arrangement by positioning the movement measurement section in a different spatial location (at one end of the longitudinal direction) rather than between the battery and printing head. This dimensional reconfiguration allows the barycenter to be closer to the printing head while still maintaining position detection capability, thereby reducing printing head shift during manual movement.
2Weight of moving object
If the battery is positioned away from the printing head, then the barycenter shifts away from the printing head, but the printing head stability decreases
Solution Approach 1:
The patent positions the battery and movement measurement section at opposite ends of the longitudinal direction, creating a balanced dimensional distribution. This allows the barycenter to be located closer to the printing head (improving stability) while the battery remains positioned away from the printing head (maintaining weight distribution). The key is that the movement measurement section is placed at the end opposite to the battery, creating a balanced configuration that satisfies both requirements.
3Measurement precision
If the movement measurement section is placed between the battery and the printing head, then position detection is possible, but the printing head shift increases during manual movement
Solution Approach 1:
The patent extracts the movement measurement section from its traditional position between the battery and printing head, and relocates it to one end of the longitudinal direction. This extraction removes the harmful effect of the measurement section causing barycenter shift, while the measurement function is preserved through its new positioning. The printing head stability is improved because the measurement section no longer interferes with the barycenter location.
4Stability of the object's composition
If the barycenter is located away from the printing head, then the battery placement is stable, but the printing head shifts easily during manual movement
Solution Approach 1:
The patent uses dimensional arrangement to position the battery at one end of the longitudinal direction and the movement measurement section at the other end. This creates a configuration where the barycenter naturally falls closer to the printing head (improving printing stability) while the battery remains stably positioned away from the printing head. The longitudinal dimensional distribution allows both stability requirements to be satisfied simultaneously.
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
This configuration enhances printing precision and stability by minimizing the shift of the printing head, allowing for accurate printing even when the device is manually moved, and facilitates easier handling and cartridge replacement.
Implementation Method 1
a movement measurement section that optically measures the movement of the printing apparatus relative to the medium
Data Source
AI summary
A printing apparatus includes a battery housing section that houses a battery, a head placement section where a printing head that performs printing on the medium is placed, and a movement measurement section that measures the movement of the printing apparatus relative to the medium, and the battery housing section, the head placement section, and the movement measurement section are arranged in the order of the battery housing section, the head placement section, and the movement measurement section.