Portable Printer End-Mounted Charger Layout
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Solution Overview
Problem
Conventional portable printers face challenges in compact design due to the large size of the charging circuit and connector, which interferes with other components and affects portability, requiring additional space and design modifications to accommodate the charger at the central portion.
Innovation Solution
The charger is positioned at one end of the printer, allowing the power supply, DC-DC converter, and printing unit to be arranged sequentially, enabling a compact columnar shape with a knock dial at the central portion, reducing the need for additional space and facilitating easy battery voltage changes.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the charging circuit and connector are provided at the central portion of the printer to connect the battery, then the battery can be connected and charged, but the printer size becomes large and portability is reduced
Solution Approach 1:
The charging circuit is extracted from the central portion of the printer and relocated to one end. This separation removes the bulky charging components from the center, allowing the printer body to be more compact while maintaining the battery charging function through wiring connections to the extracted charging circuit at the end position.
2Reliability
If the connector is made large to accommodate the charging circuit, then the charging function is reliable, but the printer requires additional space and becomes less portable
Solution Approach 1:
The charging circuit is extracted and positioned at the end of the printer, allowing the main body to be compact and portable. The connection reliability is maintained through proper wiring design that connects the battery to the extracted charging circuit without requiring a large central connector.
Solution Approach 2:
Instead of expanding the printer body horizontally to accommodate a large central connector, the charging circuit is relocated to the end position, utilizing the longitudinal dimension of the printer. This dimensional reorganization maintains connection reliability while preserving portability.
3Reliability
If the charging circuit is placed at the central portion, then the battery can be connected, but the design complexity increases due to the need for additional space and connector accommodation
Solution Approach 1:
The charging circuit is extracted from the complex central arrangement and simplified by relocating it to one end of the printer. This extraction reduces design complexity by eliminating the need for a large central opening and complex connector accommodation, while maintaining reliable battery connection through streamlined wiring.
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 results in a more compact and portable printer design that maintains functionality without bulging at the central portion, enhancing ease of carrying and reducing design complexity.
Implementation Method 1
a DC-DC converter 74 that converts a voltage of the rechargeable battery into a logic voltage
Data Source
Figure 1A~1B
Figure 2~3
Figure 4
AI summary
A printing apparatus includes a printer function part configured to print on a recording sheet, a power supply including a rechargeable battery, a charger configured to charge the rechargeable battery, and an input part configured to input information. The printer function part, the input part, the power supply, and the charger are arranged from a first end of the printing apparatus towards a second end opposite to the first end, in an order of the printer function part, the input part, the power supply, and the charger.