Proxy Printing Device Policy Validation
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Solution Overview
Problem
Existing policy-based printing systems are limited to closed private domain environments, making it difficult for users, such as on-the-go professionals, to access and print data in public locations where the systems are not supported, and do not reliably allow access to printing data beyond the office environment.
Innovation Solution
A system that includes a public server, a proxy printing device, and a private server, where the proxy device submits requests to the public server and the private server applies policies to determine whether to forward documents, allowing access only from authorized printing devices that meet specific conditions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a closed private domain environment is used for policy-based printing, then security and policy control are improved, but accessibility and usability in public locations deteriorate
Solution Approach 1:
The patent introduces a proxy printing device as an intermediary between public printing devices and the private domain policy-based printing system. The proxy device receives print requests from public locations, forwards them to the private domain server for policy validation, and relays approved requests back to the public device. This mediator enables public accessibility while maintaining private domain security and policy control.
2Adaptability or versatility
If printing devices are allowed to access documents from private servers in public locations, then accessibility is improved, but security and policy compliance deteriorate
Solution Approach 1:
The system performs preliminary policy validation and authentication before allowing any document access or printing operations. The proxy device submits the printing device's identifier and requested document information to the private domain server in advance. The server evaluates the request against stored policies, authenticates the device, and only then authorizes the printing operation. This preliminary action ensures security and policy compliance are verified before accessibility is granted.
3Reliability
If policy validation is performed for each printing device, then security is improved, but system complexity and processing time worsen
Solution Approach 1:
The patent combines multiple policy validation functions into a single proxy device that acts as a gateway. Instead of each printing device independently implementing complex policy validation logic, the proxy device consolidates the authentication and policy evaluation processes. It manages the communication with the private domain server, handles policy rules, and makes authorization decisions, thereby reducing system complexity while maintaining security.
4Reliability
If policy validation is performed for each printing device, then security is improved, but processing time deteriorates
Solution Approach 1:
The system performs preliminary authentication and policy validation before the actual printing operation. The proxy device submits device identifiers and request information to the private domain server in advance, allowing the server to pre-evaluate policies and prepare authorization decisions. This preliminary action reduces the processing time during the actual printing operation, as the security validation is already completed beforehand.
Data Source
AI summary
A policy-based printing system is implemented to allow access to a private domain to print using a public domain. The private domain includes private servers that store documents. The public domain includes servers and a printing device. A public policy server uses a domain list and a protocol connection with a private authentication server to validate a user and identify which private domain to access. The public policy server receives requests from the printing device to process a print job of a document in the private domain. A proxy printing device is created to manage a plurality of printing devices and communicate with the public policy server. The proxy printing device corresponds to a condition within the printing devices.