Print Media Modes for Adaptive Heated Pressure Roller Drying
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Solution Overview
Problem
Existing imaging devices fail to account for the type and weight of print media when setting drying conditions, leading to issues like paper jams and difficulties in finishing due to curling and cockling caused by partially dried print substance.
Innovation Solution
Implementing a non-transitory machine-readable medium that selects a special media mode based on the weight and type of print media, adjusting operational characteristics such as HPR temperature, media speed, and tension to condition the print media effectively.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If drying conditions are not adjusted based on media type and weight, then the imaging device operates with standard parameters, but paper jams and finishing difficulties occur due to curling and cockling
Solution Approach 1:
The system dynamically adjusts drying parameters (HPR temperature, media speed, tension) based on detected media type and weight. The conditioning device transitions from static standard parameters to dynamic adaptive parameters, allowing the drying process to optimize for each specific media combination, thereby preventing curling and cockling while maintaining operational reliability
Solution Approach 2:
The invention changes physical parameters of the drying process (temperature of heated pressure roller, speed of media conveyance, tension applied to media) based on media characteristics. By varying these parameters according to media type and weight, the system eliminates harmful effects like curling and cockling that occur with fixed parameter settings
2Ease of operation
If standard drying parameters are used for all media, then device operation is simple, but distorted properties such as curling and cockling occur
Solution Approach 1:
The system performs self-adjustment by automatically detecting media type and weight, then autonomously selecting appropriate drying parameters without user intervention. The conditioning device serves itself by incorporating sensors and control logic that enable automatic adaptation, maintaining ease of operation while preventing shape distortion
Solution Approach 2:
The system incorporates feedback through media detection mechanisms that provide information about media type and weight to the control system. This feedback loop enables the drying parameters to be automatically adjusted based on actual media characteristics, preventing curling and cockling while requiring minimal user input
3Productivity
If media speed is not optimized for media weight, then conveyance is straightforward, but drying efficiency decreases leading to distorted properties
Solution Approach 1:
Media speed is dynamically adjusted based on detected media weight and type. The system transitions from fixed speed conveyance to variable speed operation, optimizing the residence time of media in the drying zone to achieve thorough drying without causing distortion, thereby improving both drying efficiency and media quality
Solution Approach 2:
The conveyance speed parameter is changed according to media characteristics. By varying speed based on media weight and type, the system optimizes drying efficiency for each media combination while preventing distorted properties such as curling and cockling
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
Enhances the drying process by ensuring timely and efficient removal of distorted properties in print media, reducing paper jams and improving finishing processes.
Implementation Method 1
a heated pressure roller (HPR), which has a set point temperature
Implementation Method 2
a heated pressure roller (HPR), which has a set point temperature
Data Source
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AI summary
In some examples, a non-transitory-machine readable medium can store instructions executable by a processing resource to select a special media mode from a plurality of special media modes based on a weight or a type of print media and cause a conditioning device to condition the print media in accordance with the special media mode.