Digital Front End Control Mark Detection for Printing Registration

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Solution Overview

Problem

In existing printing systems, the Digital Front End (DFE) is unaware of control marks added by users within the digital file, as these marks are indistinguishable from the image data, leading to inefficiencies in registration calibration and trimming processes.

Innovation Solution

The DFE is configured to detect and generate control data for control marks present in the image data, regardless of their origin, allowing for automated processing and alignment procedures.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Extent of automation

If the DFE treats control marks as indistinguishable from image data, then the system maintains simplicity in data processing, but automation of registration calibration and trimming processes is lost

Engineering Contradiction:
Improveautomation of registration calibration and trimmingVSAvoidcomplexity of control mark detection and processing
Core Design Contradiction:
Extent of automationVSDevice complexity

Solution Approach 1:

The patent extracts control marks from the general image data stream by implementing specific detection algorithms that identify control mark characteristics (such as registration marks, color bars, or geometric patterns) distinct from regular image content. This extraction enables the DFE to separately process control marks and image data, automating registration calibration and trimming while maintaining relatively simple implementation through pattern recognition techniques.

Inventive Principle:
Principle #2Taking out (Extraction)

2Productivity

If the DFE detects and processes control marks in image data, then efficiency of printing and calibration processes is improved, but processing time and computational resources increase

Engineering Contradiction:
Improveefficiency of printing and calibration processesVSAvoidprocessing time for control mark detection
Core Design Contradiction:
ProductivityVSLoss of time

Solution Approach 1:

The patent applies preliminary action by detecting and processing control marks during the digital front end preparation phase, before the actual printing process begins. The DFE identifies control marks in the incoming image data, extracts their parameters (position, size, orientation), and pre-calculates registration and trimming information. This preliminary processing enables automated calibration and improves overall productivity without significantly impacting production time, as the control mark analysis occurs in parallel with or before the main printing workflow.

Inventive Principle:
Principle #10Preliminary action

Data Source

PatentUS11144801B2Generating control data for a printing system
Publication Date: 2021.10.12 HEWLETT PACKARD DEVELOPMENT COMPANY LP
  • US11144801B2 patent drawing
  • US11144801B2 patent drawing
  • US11144801B2 patent drawing

AI summary

A method of generating control data for a printing system includes receiving image data comprising an image to be printed by the printing system, determining a presence of a control mark in the image data, and generating control data for the printing system based on the control mark, the control data including at least an indication of the presence of the control mark.