Digital Printing Simulation for Speed Bottleneck Detection
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Solution Overview
Problem
Digital high-capacity printing systems face issues with detecting all problems in print jobs, leading to delays and potential standstills due to sudden variations in processing speed, especially with large jobs, and existing solutions like proofing and preflight tools are insufficient in identifying issues specific to the printing apparatus.
Innovation Solution
A method is introduced that simulates the printing process by activating a simulation state in the printing apparatus, where unrastered print data is supplied to the image raster computer at a speed corresponding to the print speed, allowing for error detection and feedback, and iterative parameter variations to determine the maximum achievable print speed without material consumption, enabling efficient problem detection and print duration prediction.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If more hardware capacity is provided from the outset (125% of anticipated capacity), then the system can handle higher print speeds and larger jobs, but the additional investment remains unused for the majority of the time
Solution Approach 1:
The system dynamically adjusts the simulation parameters (print speed, hardware configuration) based on the specific print job characteristics. Instead of static over-provisioning, the simulation adapts to each job's requirements, allowing optimal utilization of existing hardware capacity without permanent over-provisioning.
Solution Approach 2:
The invention changes the parameter being measured from actual print speed to simulated print speed under various conditions. By varying simulation parameters (job size, complexity, hardware configuration), the system identifies optimal operating points without requiring permanent hardware upgrades.
2Reliability
If the velocity of the recording medium is reduced to allow continuous supply of rastered data, then data transfer problems are avoided, but the printing speed and productivity are significantly reduced
Solution Approach 1:
The system performs preliminary simulation of the printing process to identify potential data supply bottlenecks before actual printing. By detecting problematic combinations of text and graphics in advance, the system can pre-adjust processing parameters or alert operators, preventing standstills while maintaining optimal printing speed.
Solution Approach 2:
The simulation provides feedback about potential speed variations and data supply issues. This feedback mechanism allows the system to optimize the balance between recording medium velocity and rastering speed, ensuring continuous operation without unnecessary speed reductions.
3Measurement precision
If proofing and preflight tools are used to analyze print jobs before execution, then syntax errors are detected, but problems occurring only upon interaction with the printing apparatus are not detected
Solution Approach 1:
The simulation acts as an intermediary between preflight tools and actual printing. It bridges the gap by creating a virtual environment that mimics the printing apparatus's behavior, allowing detection of apparatus-specific problems without physical printing. The simulation mediates between file syntax checking and actual print execution.
Solution Approach 2:
The invention creates a virtual copy of the printing process through simulation. This digital twin replicates the behavior of the actual printing apparatus, including its speed variations and processing characteristics, allowing comprehensive error detection without consuming physical resources or risking actual print jobs.
4Reliability
If the hardware capacity is increased to handle sudden variations in processing speed, then standstills are prevented, but the additional hardware investment is difficult or not possible given a running operation
Solution Approach 1:
The system uses its existing hardware resources to perform self-diagnosis and optimization through simulation. Instead of requiring external hardware upgrades, the printing system leverages its own computational resources to predict and prevent processing bottlenecks, maintaining reliability without additional hardware investment.
Data Source
AI summary
In a method for simulating a printing process of print jobs in a digital high-capacity printing system with print server and printing apparatus having a plurality of modules: a simulation state of the printing apparatus is activated by (e.g. a user of) a monitoring module of the digital high-capacity printing system, a print job is started with print data at the print server by the monitoring module, the print data is transferred to the printing apparatus, printing is simulated by supplying unrastered print data to an image raster computer of the printing apparatus while data is withdrawn from the image raster computer, and feedback is provided to the monitoring module of the digital high-capacity printing system about the occurrence of an error message. The speed of the removal may correspond to the print speed.