Toner Limit Processing via Metadata Analysis

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Solution Overview

Problem

Current printing systems face inefficiencies in toner limit processing, requiring excessive calculations and memory usage, especially as print speeds increase, due to the need to monitor and reduce toner or ink levels in documents.

Innovation Solution

The implementation of meta-data structures to analyze and represent sheetside images, allowing for efficient toner limit processing by reducing the need for pixel-by-pixel data storage and enabling compressed bitmap generation, thereby minimizing memory bandwidth utilization and calculation load.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Measurement precision

If pixel-by-pixel toner limit processing is performed on high-resolution bitmaps, then toner limit accuracy is improved, but processing time and memory usage increase significantly

Engineering Contradiction:
Improvetoner limit accuracyVSAvoidprocessing time per page
Core Design Contradiction:
Measurement precisionVSLoss of time

Solution Approach 1:

The patent segments the high-resolution bitmap into multiple lower-resolution representations or processing stages. Instead of processing all pixels simultaneously at full resolution, the system divides the image data into manageable segments that can be processed sequentially or in parallel, reducing the computational burden while maintaining toner limit accuracy through progressive refinement or sampling strategies.

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

The patent introduces additional processing dimensions beyond simple pixel-by-pixel analysis. This includes using multiple resolution levels, creating intermediate data structures, or adding processing stages that operate at different scales. By transforming the problem from a single-dimensional pixel array into a multi-dimensional processing space, the system achieves accurate toner limiting without prohibitive processing times.

Inventive Principle:
Principle #17Another dimension (Dimensionality change)

2Manufacturing precision

If high-resolution bitmaps are stored and processed in memory, then image quality is improved, but memory bandwidth utilization and calculation load increase

Engineering Contradiction:
Improveimage qualityVSAvoidmemory bandwidth utilization
Core Design Contradiction:
Manufacturing precisionVSDevice complexity

Solution Approach 1:

The patent segments the high-resolution bitmap storage and processing into multiple lower-resolution representations. Instead of loading and manipulating the entire high-resolution image in memory simultaneously, the system divides the image data into segments that can be processed in smaller chunks, reducing peak memory bandwidth requirements while maintaining final image quality through careful reconstruction or progressive processing.

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

The patent creates multiple lower-resolution copies or representations of the original high-resolution bitmap for different processing purposes. These copies serve as intermediates that reduce memory bandwidth utilization during toner limit processing, while the original high-resolution data is preserved for final output. This copying strategy allows accurate processing without requiring the full memory bandwidth needed for direct high-resolution manipulation.

Inventive Principle:
Principle #26Copying

Data Source

PatentUS9367775B2Toner limit processing mechanism
Publication Date: 2016.06.14 RICOH CO LTD
  • US9367775B2 patent drawing
  • US9367775B2 patent drawing
  • US9367775B2 patent drawing

AI summary

A method is disclosed. The method includes analyzing a meta-data structure corresponding to each tile of a sheetside image to detect a blank state of the sheetside image, detecting a sensing display item in a data stream and scanning the sheetside image in response to detecting the sensing display item.