Printer Mobile Terminal Weight Data Integration
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Solution Overview
Problem
Conventional printers connected to weight measuring apparatuses are limited to specific use cases and cannot be used for general purposes, restricting their functionality and portability.
Innovation Solution
A printer configured to communicate with both weight measuring apparatuses and mobile terminals, allowing for data acquisition and printing commands to be managed through the mobile terminal, enabling the printer to perform printing based on weight measuring results while preventing unintended data transmission.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If the printer is connected to the weight measuring apparatus as a dedicated device, then the printing function for weight measurement is ensured, but the printer cannot be used for general purposes
Solution Approach 1:
The printer is designed to support multiple connection modes: it can connect to weight measuring apparatuses for dedicated weighing functions, or connect to mobile terminals for general-purpose use. The control unit automatically detects the connection type and switches operational modes accordingly, enabling the same device to serve both specialized and general functions without requiring separate dedicated printers for each use case.
2Ease of operation
If the printer receives weight data automatically from the weight measuring apparatus, then the printing process is simplified, but unintended weight data may be printed
Solution Approach 1:
The control unit implements a feedback mechanism where it monitors the reception state of weight data and the current operational mode. When operating in mobile terminal connection mode, the control unit only processes weight data if it has been explicitly transmitted through the mobile terminal, providing feedback control that prevents unintended automatic printing while maintaining ease of operation for authorized printing requests.
Solution Approach 2:
The system requires preliminary action through mobile terminal intervention before printing weight data. The mobile terminal must actively transmit the weight data to the printer before printing occurs, ensuring that the user has consciously selected and confirmed the data to be printed. This preliminary transmission step prevents unintended printing while keeping the actual printing operation simple.
Data Source
AI summary
A printing apparatus communicates with a weight measuring apparatus and a mobile terminal. The weight measuring apparatus transmits measuring data of weight of a measurement object, and the mobile terminal transmits a data acquisition command requesting for transmission of the measuring data. The printing apparatus includes a head to execute printing on a print medium, and a controller. The controller is configured to: receive the data acquisition command from the mobile terminal; change a state of the printer from an instruction waiting state to a data reception waiting state; receive a second measuring data transmitted from the weight measuring apparatus; transmit the second measuring data to the mobile terminal; receive a print command corresponding to the second measuring data from the mobile terminal; and control the head based on the received print command to perform the printing, on the print medium, corresponding to the second measuring data.