RIP Preflight Handling for Failed PDF Page Rendering
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Solution Overview
Problem
Modern raster image processors (RIPs) face inefficiencies when handling poorly prepared PDF files, leading to errors and unintended changes during rendering, and existing preflight tools often apply unnecessary corrections across all jobs, including those that don't need them, resulting in inefficient re-rendering of entire jobs with many pages.
Innovation Solution
A method and system that utilizes a raster image processing (RIP) system with integrated preflight applications to identify and correct errors in individual pages, allowing for intelligent handling of rendering errors by separating error pages from the job, applying corrections through a preflight application, and re-rendering corrected pages using the RIP system.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If preflight tools are applied to all jobs, then job integrity is preserved, but processing time increases due to unnecessary corrections on jobs that don't need them
Solution Approach 1:
The patent segments the preflight correction process by identifying and isolating only the specific pages containing errors rather than applying corrections to the entire job. The system divides the job into individual pages, applies preflight analysis only to problematic pages, and excludes error-free pages from correction processing, thereby reducing unnecessary processing time while maintaining job integrity.
Solution Approach 2:
The patent implements partial action by applying preflight corrections only to the extent necessary - specifically to pages that contain errors - rather than applying corrections universally to all pages. The system performs partial corrections on affected pages while leaving unaffected pages unchanged, optimizing the balance between maintaining integrity and minimizing processing time.
2Reliability
If preflight corrections are applied to entire jobs, then all errors are corrected, but re-rendering time increases for jobs with large numbers of pages
Solution Approach 1:
The patent segments the correction process by identifying specific error-containing pages and isolating them from the rest of the job. Instead of re-rendering entire jobs, the system re-renders only the corrected pages, significantly reducing processing time for large multi-page jobs while ensuring all errors are still addressed.
Solution Approach 2:
The patent extracts and separates the error-containing pages from the complete job for targeted correction and re-rendering. By taking out only the problematic pages that need correction rather than processing the entire job, the system maintains error correction completeness while improving overall processing speed.
3Reliability
If PDF files are corrected using preflight tools, then rendering errors are fixed, but unintended changes to PDF contents may occur
Solution Approach 1:
The patent applies local quality by making corrections only where errors are detected in specific pages rather than applying uniform corrections across the entire PDF. The system analyzes each page locally, applies corrections only to error-containing elements, and preserves the original content of error-free pages, thereby minimizing unintended changes while fixing rendering errors.
Solution Approach 2:
The patent implements partial action by applying corrections only to the extent necessary - specifically to error-containing pages and elements - rather than applying comprehensive corrections to the entire PDF. This selective approach ensures rendering errors are fixed while minimizing the risk of introducing unintended changes to correct content.
Data Source
AI summary
A printing system includes a printing device that receives print jobs. The printing device includes a controller having a raster image processing (RIP) system and a preflight application. The RIP system renders a plurality of pages of a print job. The controller determines that a source page of the plurality of pages includes an error that causes the page to fail to render. The source page is provided to the preflight application. A data file having the source page is opened in the preflight application. The preflight application corrects the error on the source page to generate a corrected page. The corrected page replaces the source page of the plurality of pages of the print job. The corrected page is rendered using the RIP system and printed with the plurality of pages of the print job.