Helical and Circular Scan Imaging Head Orthogonality Correction
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Solution Overview
Problem
Existing image forming techniques using helical scanning suffer from orthogonality distortions, leading to geometric and functional issues, particularly in the formation of conductive and dielectric patterns, which are exacerbated by the use of conventional orthogonality correction methods that introduce stair-case artifacts and resistance variations.
Innovation Solution
A method that employs a recording head with multiple channels to form images using both helical and circular scanning techniques, where image data is strategically assigned to channels to minimize distortions, with orthogonality corrections applied selectively based on the type of image feature being formed, and zero data substitution used to avoid unwanted pixel shifts during helical scanning.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If helical scanning is used to form images, then image forming throughput is improved, but orthogonality distortions occur causing geometric and functional issues
Solution Approach 1:
The patent segments the image data into different types (graphical elements vs. electronic circuits) and applies different scanning methods to each segment. Graphical elements are formed using helical scanning for high throughput, while electronic circuits are formed using circular scanning to avoid orthogonality distortions, thus resolving the contradiction between productivity and precision.
Solution Approach 2:
The patent applies different scanning techniques to different regions of the image based on their functional requirements. Areas requiring high throughput (graphical elements) use helical scanning, while areas requiring geometric precision (electronic circuits) use circular scanning, allowing each region to be optimized for its specific needs.
2Manufacturing precision
If conventional orthogonality correction methods are applied to helical scans, then orthogonality distortions are corrected, but stair-case artifacts and resistance variations are introduced
Solution Approach 1:
Instead of applying correction algorithms to fix distortions after they occur, the patent inverts the approach by using circular scanning for electronic circuits where no distortion occurs in the first place, and by substituting zero data for missing pixel columns rather than attempting to correct distorted data, thereby eliminating the source of artifacts rather than treating the symptom.
Solution Approach 2:
The patent converts the harmful effect of missing pixel columns in helical scans into a beneficial approach by substituting zero data, which simplifies the correction process and eliminates stair-case artifacts. The harm of data loss is transformed into a clean, artifact-free correction method.
3Manufacturing precision
If multiple scanning techniques are combined for different image features, then both graphical and electronic elements can be printed with improved quality, but device complexity increases
Solution Approach 1:
The patent implements a dynamic scanning system that can switch between helical and circular scanning modes based on the type of image feature being formed. The recording head and media support system adapt their motion patterns dynamically, allowing the same hardware to produce different scan types without requiring separate physical systems, thus managing complexity through software control rather than hardware duplication.
Data Source
AI summary
A method for forming an image includes providing a media support adapted to receive media; providing a recording head comprising a plurality of recording channels, wherein each recording channel is adapted to form an image pixel column while scanning over the media; providing an image data file comprising one or more arrangements of image data columns; assigning first image data from a single image data column to a first recording channel of the recording head; operating the first recording channel to form a first image pixel column solely in accordance with the assigned first image data; assigning second image data from each image data column of a plurality of the image data columns to a second recording channel of the recording head; operating the second recording channel to form a second image pixel column in accordance with the assigned second image data; and operating the recording head to form the image.