Digital Printing Trapping via Bitmap Overfill Insertion
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Solution Overview
Problem
Existing digital printing systems face challenges in real-time trapping of print data at the object level, leading to inefficiencies and increased data volume due to the need for additional trapping objects, which complicates processing and is not suitable for real-time execution in digital electronic printing machines.
Innovation Solution
A method where individual objects are transferred into a bitmap pixel file, with overfills determined and inserted based on predetermined trapping rules, allowing for automatic trapping without generating additional objects or lists, enabling real-time processing in electronic digital high-capacity printing systems.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If trapping is performed at the object level by generating additional trapping objects, then trapping precision is improved, but device complexity and processing time increase
Solution Approach 1:
The patent extracts only the essential trapping information needed from the object data, rather than creating complete additional trapping objects. The Raster Image Processor determines trapping requirements by analyzing object characteristics and generates minimal trapping adjustments, removing unnecessary complexity while preserving trapping precision.
Solution Approach 2:
The patent performs preliminary analysis of object characteristics and trapping requirements before the main rasterization process. The Raster Image Processor pre-determines which objects require trapping and calculates the necessary adjustments in advance, allowing the actual trapping to be applied efficiently during rasterization without requiring complex post-processing.
2Manufacturing precision
If trapping objects are generated in advance, then trapping quality is improved, but processing speed decreases
Solution Approach 1:
The system performs preliminary analysis of trapping requirements during the object parsing phase, identifying which objects need trapping before rasterization begins. This early determination allows the Raster Image Processor to apply trapping efficiently during the rasterization process itself, rather than requiring separate pre-processing or post-processing steps that would slow down production.
Solution Approach 2:
The patent integrates trapping determination and application into the continuous rasterization process. Rather than separating trapping preparation from the main printing workflow, the system determines trapping requirements and applies them in a continuous flow during rasterization, maintaining processing speed while ensuring trapping quality.
3Manufacturing precision
If complete object information is provided for trapping calculations, then trapping accuracy is improved, but data volume increases
Solution Approach 1:
The patent extracts only the specific object characteristics needed for trapping calculations from the complete object data. The Raster Image Processor identifies and uses only the relevant parameters (such as object position, size, and color properties) required for determining trapping requirements, rather than processing or storing complete object information, thus maintaining trapping accuracy while reducing data volume.
Data Source
AI summary
In a method or system for trapping print data with a plurality of respective objects, the objects being individually transferred into a bit map pixel file, at least one overfill is determined for the respective object relative to color regions bordering the respective object in the pixel file according to predetermined trapping rules. The object and the at least one overfill are inserted into the pixel file, wherein the object and the overfill are rastered in the pixel file upon insertion.