Printer Test Page Skew Alignment Diagnosis
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Solution Overview
Problem
Existing diagnostic pages and techniques for printers are not user-friendly, making it difficult for users to diagnose printer errors, and each printer model has a different process for accessing and presenting diagnostic information.
Innovation Solution
A method and system for printing a test page that includes a first symbol and a second symbol, where the second symbol fits inside the first symbol boundary when the page is folded, allowing users to assess the skew alignment and providing additional test images for print quality, banding bars, and print head alignment, facilitating easier error diagnosis.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If existing diagnostic pages are used, then diagnostic information is provided, but the process is not user-friendly and difficult to understand
Solution Approach 1:
The patent uses visual copies and representations of alignment issues through test patterns. Instead of presenting raw diagnostic data, the system creates visual copies of what the alignment problem looks like, allowing users to directly see and understand the issue without complex interpretation.
Solution Approach 2:
The patent employs color changes and visual variations in test patterns to indicate different alignment states. By using color coding and visual feedback, the system transforms complex diagnostic information into intuitive visual signals that are easy for users to interpret.
2Adaptability or versatility
If different printer models use different diagnostic processes, then each model can be optimized, but users face inconsistency across models
Solution Approach 1:
The patent implements a universal test pattern design that can be used across different printer models. The same visual test patterns and evaluation methods work consistently across various models, providing a standardized diagnostic approach that maintains ease of use while being adaptable to different hardware configurations.
3Measurement precision
If detailed diagnostic information is provided, then accuracy of diagnosis improves, but user-friendliness decreases
Solution Approach 1:
The patent introduces visual test patterns as an intermediary between the complex measurement data and the user. Instead of presenting raw measurement data directly, the system uses visual patterns that mediate the information, translating precise measurements into intuitive visual representations that are easy to interpret while maintaining measurement accuracy.
Data Source
AI summary
A method for testing skew in a printer includes receiving at a printer a request to print a test page, and in response to the request, printing a test page. The test page includes (a) a first symbol defining a first symbol boundary and (b) a second symbol sized smaller than the first symbol boundary such that the second symbol fits inside the first symbol boundary when the test page is folded. The relationship between the size of the first symbol boundary and the size of the second symbol corresponds to a predetermined acceptable amount of skew in the alignment of the first and second symbols on the test page.