Print Data Processing Device for Electronic Receipt Generation
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Solution Overview
Problem
Modifying existing POS systems to produce electronic receipts is complex due to their central role in business operations and tight integration with other systems, and they often result in paper waste even when electronic receipts are generated.
Innovation Solution
A print data processing device that buffers print data from POS terminals, generates print simulation data if a paper receipt is not required, and sends the data to an electronic receipt server, allowing for electronic receipt production without altering the POS system, while simulating the printing process to avoid paper usage.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If the POS system is modified to produce electronic receipts, then electronic receipt generation capability is improved, but system complexity and modification difficulty increase
Solution Approach 1:
The patent introduces a receipt printer as an intermediary device between the POS terminal and the user. The POS terminal sends print data to the receipt printer, which then decides whether to output paper receipts or transmit electronic receipt data to mobile terminals. This intermediary approach allows electronic receipt functionality to be added without modifying the POS system itself, thus resolving the contradiction between improving adaptability and avoiding system complexity.
2Adaptability or versatility
If paper receipts are always output, then user compatibility is maintained, but paper waste increases
Solution Approach 1:
The patent implements a dynamic receipt output mechanism where the receipt printer can switch between two modes: outputting paper receipts for users who need them, and transmitting electronic receipt data to mobile terminals for users who prefer digital copies. This dynamic adaptability allows the system to accommodate different user preferences while minimizing paper waste, as electronic receipts are provided to users who do not require physical copies.
3Adaptability or versatility
If the POS system is modified, then electronic receipt functionality is added, but operation stability deteriorates
Solution Approach 1:
By positioning the receipt printer as an intermediary device with independent electronic receipt transmission capability, the patent avoids modifying the POS system's core operations. The POS terminal continues to function as before, sending print data to the receipt printer, which then handles the decision-making process for electronic versus paper receipt output. This separation preserves the stability of the POS system while adding electronic receipt functionality.
4Loss of substance
If print data is processed to generate electronic receipts, then paper usage is reduced, but data processing complexity increases
Solution Approach 1:
The patent extracts the electronic receipt transmission function from the traditional printing process. The receipt printer receives print data, extracts the necessary receipt information, and transmits it to mobile terminals in electronic format. This extraction approach allows electronic receipt generation without requiring complex data processing, as the receipt printer leverages the existing print data structure to create electronic copies.
Data Source
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AI summary
A print data processing device that is a device for processing print data transmitted from a host device, and electronically providing printouts according to user needs without making changes on the host device side and without wasting paper. The print data processing device includes: a data storage unit that receives and stores print data sent from a host device; an information acquisition unit that acquires requirement information indicating whether or not printing on print media is required; a data processing unit that, when the requirement information indicates printing on the print media is not required, converts the stored print data to print simulation data that does not cause execution of a printing process by a printer; a data output unit that outputs stored print data or print simulation data to the printer according to the requirement information; and a response unit that receives the response to the host device from the printer based on the output print data or print simulation data, and relays the response to the host device.