3D Printer One-Time Use File Encryption and Validation
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Solution Overview
Problem
Existing 3D printing systems with one-time use files lack the capability to track and manage filament usage, leading to potential failures during printing and unauthorized reproduction of objects.
Innovation Solution
A 3D printing system that incorporates a unique 3D printer ID number and an OBJ file with a predetermined number of print authorizations, which is encrypted to ensure single-use authorization on a designated 3D printer.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If an OBJ file is configured for one-time use on a designated 3D printer, then unauthorized reproduction is prevented, but the system complexity increases due to encryption and validation requirements
Solution Approach 1:
The patent applies preliminary action by pre-configuring the OBJ file with a unique file ID number and predetermined print authorization count before encryption. The 3D printer is pre-programmed with its unique printer ID number. This preliminary configuration enables automatic validation during printing without requiring complex real-time decision-making systems, thus preventing unauthorized reproduction while maintaining system simplicity.
Solution Approach 2:
The patent uses copying by creating encrypted copies of the OBJ file that contain embedded authorization information (file ID number and print count). Each encrypted file is a self-contained copy that carries its own validation data, eliminating the need for external validation servers or complex centralized control systems. The printer simply reads and validates the embedded information during the printing process.
2Reliability
If the system tracks filament usage and print authorization, then printing failures are prevented, but the device complexity and cost increase
Solution Approach 1:
The patent applies self-service by enabling the OBJ file and 3D printer to automatically validate authorization and track print counts without external intervention. The encrypted OBJ file contains all necessary validation information (file ID, print authorization count), and the printer autonomously verifies this information against its own stored printer ID. This self-validating mechanism prevents printing failures while avoiding the need for complex external tracking infrastructure.
Solution Approach 2:
The system performs preliminary action by pre-loading the printer with its unique ID number and pre-configuring the OBJ file with authorization metadata before the printing process begins. This advance preparation enables automatic validation and tracking during printing, preventing failures due to unauthorized or exhausted print jobs without requiring complex real-time monitoring systems.
3Reliability
If the OBJ file includes predetermined print authorizations, then unauthorized printing is prevented, but the ease of operation decreases due to validation requirements
Solution Approach 1:
The patent embeds all authorization control information directly into encrypted copies of the OBJ file. The file contains self-contained validation data (file ID number, predetermined print count) that the printer automatically reads and verifies. This approach maintains ease of operation because the user simply loads the encrypted file and the printer handles all validation automatically, without requiring manual authorization checks or complex user interactions.
Solution Approach 2:
The system enables self-service by allowing the encrypted OBJ file to carry its own authorization credentials and the printer to autonomously validate them. The file essentially serves itself by presenting its own authentication data, and the printer independently verifies it against its stored printer ID. This automated self-validation process maintains operational simplicity while ensuring reliable authorization control.
Data Source
AI summary
A system and method for a 3D printer with one time use files that incorporates a software and a 3D printer to perform the method. In a first phase the software is used to configure a machine ID number, a file ID number and create an OBJ file and a number of prints for the OBJ file in a modified OBJ file. In a second phase the modified OBJ file is encrypted to a G file. In a third phase the G file is introduced to the 3D printer. The 3D printer validates the machine ID number and the file ID number of the G file. In a fourth phase the 3D printer prints a design contained in the G file the predetermined number of times that G file indicates. The 3D printer stores the file ID number to prevent the G file being printed again.