Dynamic Dryer Control for Printing Systems

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Solution Overview

Problem

High-speed production printing systems face challenges in maintaining consistent drying performance due to varying ink discharge and paper types, leading to issues like over-drying, under-drying, or non-optimal web speeds, requiring significant user intervention.

Innovation Solution

A printing system with a print controller and engine controller that dynamically adjusts dryer settings based on real-time printing characteristic information, using predictive models and feedback mechanisms to optimize dryer performance and print speed.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Productivity

If high web speeds are used for volume printing, then productivity increases, but drying performance consistency deteriorates due to varying ink discharge and paper types

Engineering Contradiction:

Improveweb speedVSAvoiddrying performance consistency

Core Design Contradiction:

ProductivityVSReliability

Solution Approach 1:

The dryer control system dynamically adjusts drying parameters (temperature, airflow) in real-time based on detected printing characteristics such as ink coverage and paper type variations. This dynamic adaptation allows the system to maintain consistent drying performance across varying web speeds and printing conditions, resolving the contradiction between high productivity and reliable drying consistency.

Inventive Principle:

Principle #15Dynamics

Solution Approach 2:

The system incorporates sensors that continuously monitor printing characteristics and provide feedback to the dryer controller. This closed-loop feedback mechanism enables automatic adjustment of drying parameters to compensate for variations in ink discharge and paper properties, maintaining reliable drying performance at high web speeds without requiring user intervention.

Inventive Principle:

Principle #23Feedback

2Reliability

If user interaction is increased to adjust setpoints for proper drying, then drying performance improves, but ease of operation deteriorates

Engineering Contradiction:

Improvedrying performanceVSAvoiduser interaction requirement

Core Design Contradiction:

ReliabilityVSEase of operation

Solution Approach 1:

The dryer control system automatically detects printing characteristics through integrated sensors and self-adjusts drying parameters without requiring user intervention. The system serves itself by monitoring ink coverage, web speed, and paper type variations, then autonomously optimizing drying performance, thereby eliminating the need for manual setpoint adjustments while maintaining high drying reliability.

Inventive Principle:

Principle #25Self-service

Solution Approach 2:

The closed-loop feedback system continuously monitors printing conditions and automatically adjusts dryer setpoints based on detected variations. This automated feedback mechanism replaces manual user interaction with intelligent control, maintaining proper drying performance while significantly improving ease of operation.

Inventive Principle:

Principle #23Feedback

3Adaptability or versatility

If manual adjustment of dryer setpoints is required for different printing conditions, then adaptability improves, but device complexity increases

Engineering Contradiction:

Improvedrying performance adaptationVSAvoidcontrol mechanism complexity

Core Design Contradiction:

Adaptability or versatilityVSDevice complexity

Solution Approach 1:

The system uses automated feedback from sensors that detect printing characteristics to dynamically adjust dryer parameters. This eliminates the need for complex manual adjustment mechanisms while maintaining high adaptability to different printing conditions. The control complexity is shifted from manual intervention to automated sensor-based feedback loops.

Inventive Principle:

Principle #23Feedback

Solution Approach 2:

The patent replaces manual mechanical adjustment mechanisms with automated electronic control systems that use sensors and algorithms to adapt drying parameters. This substitution reduces physical device complexity while enhancing adaptability, as the electronic control system can process multiple printing variables and make precise adjustments without requiring complex mechanical components.

Inventive Principle:

Principle #28Mechanics substitution (Replace mechanical system)

Data Source

PatentUS20230150290A1Mechanism to dynamically adjust dryer performance

Publication Date: 2023.05.18 RICOH CO LTD

AI summary

A printing system is disclosed. The printing system includes a print controller and an engine controller to receive printing characteristic information from the print controller, determine one or more dryer control parameters based on the printing characteristic information and update the one or more dryer control parameters upon detecting one or more printing characteristic information changes during a printing process.