Linear Image Acquisition for Exposure Position Detection
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Solution Overview
Problem
Existing exposure devices require lengthy processes to detect the position and orientation of light-sensitive recording media and images, leading to increased exposure time and inefficiencies.
Innovation Solution
A method utilizing a linear image acquisition device that extends partially in the X direction for rapid detection of the recording medium's position and image orientation, allowing for complete image acquisition during a single traversing movement, enabling immediate and direct exposure with reduced process time.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If conventional point-by-point detection methods are used to detect the position and orientation of recording media, then measurement precision can be achieved, but the detection time and process duration are excessively long
Solution Approach 1:
The patent segments the recording medium into multiple regions with measurement marks, and uses multiple linear image acquisition devices to detect different regions simultaneously. This parallel detection approach maintains measurement precision while significantly reducing total detection time compared to sequential point-by-point detection.
Solution Approach 2:
The patent transitions from point-based detection to linear array-based detection, adding spatial dimensionality to the detection process. The linear image acquisition devices capture multiple measurement points along a line simultaneously, converting a time-consuming sequential process into a parallel spatial operation that reduces detection time while maintaining accuracy.
2Productivity
If multiple exposure heads are used to expose different regions of the recording medium, then productivity is improved, but the complexity of positioning and aligning multiple heads increases
Solution Approach 1:
The patent implements a feedback mechanism where the control device receives detection data from linear image acquisition devices about the actual positions of recording media, automatically calculates correction values, and applies these to control multiple exposure heads. This automated feedback loop enables precise coordination of multiple heads without requiring complex manual alignment procedures.
Solution Approach 2:
The patent replaces complex mechanical alignment systems with an automated optical-detection-and-control system. Instead of relying on precise mechanical positioning of multiple exposure heads, the system uses linear image acquisition devices to detect media positions and electronically controls the exposure heads based on detected data, simplifying the overall system while maintaining multi-head productivity.
3Manufacturing precision
If comprehensive detection of the entire recording medium is performed to account for manufacturing tolerances and scaling differences, then manufacturing precision is improved, but the detection process becomes more time-consuming
Solution Approach 1:
The patent divides the recording medium into multiple regions and places measurement marks at specific locations throughout the medium. Linear image acquisition devices detect these distributed marks simultaneously, enabling comprehensive assessment of manufacturing tolerances and scaling differences across the entire medium without requiring slow sequential scanning of the whole surface.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
This approach significantly reduces the detection time and allows for precise alignment and exposure of images, compensating for manufacturing tolerances and scaling differences, resulting in a more efficient exposure process.
Implementation Method 1
the position of the recording medium and/or the position of a single image on the recording medium is detected with at least one linear image acquisition device
Data Source
AI summary
The invention relates to a method for exposing at least one stored image (21) on a light-sensitive recording medium (14), with an exposure device (11), which picks up at least one recording medium (14) on a support (12), with at least one exposure head (16, 17), which is moved above the support (12) along a guiding axis (18) in the X direction and the guiding axis (18) and/or the support (12) are moved in the Y direction, with a control system, by which a traversing movement of the at least one exposure head (16, 17) is operated for exposing the at least one image (21) of the recording medium (14) and/or the recording medium (14), wherein the position of the recording medium (14) and/or the position of the at least one image (21) on the recording medium (14) are detected with at least one linear image acquisition device (25), which extends at least partially in the X direction.