Print Media Pre-heating Carriage Segmentation
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing printing systems inefficiently heat the print medium, leading to wasted energy and suboptimal temperature maintenance, resulting in inadequate ink adhesion and image quality, especially when multiple printheads are used on a carriage.
Innovation Solution
A carriage with multiple printheads and heating lamps positioned between each printhead to pre-heat specific portions of the print medium immediately before ink ejection, reducing energy consumption and maintaining optimal temperature for each printhead.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Temperature
If the entire print medium is heated using a stationary heating lamp, then the print medium temperature is sufficient for ink adhesion, but energy is wasted heating areas where no ink will be placed
Solution Approach 1:
The patent divides the heating function into multiple heating lamps, each associated with a specific printhead. Each heating lamp heats only the portion of the print medium that will receive ink from its corresponding printhead, rather than heating the entire print medium width. This segmentation eliminates energy waste on unused areas while ensuring adequate temperature where needed.
Solution Approach 2:
The patent implements localized heating by positioning heating lamps adjacent to each printhead so that each lamp heats only the specific region of the print medium that corresponds to its printhead's ejection area. This creates non-uniform temperature distribution across the print medium width, with heat applied only where ink deposition occurs, matching the local quality principle.
2Temperature
If a heating lamp is disposed on the leading edge of the carriage, then the print medium is heated in the proper location, but the temperature drops rapidly when the heating lamp moves away
Solution Approach 1:
The patent segments the heating function across multiple stationary heating lamps positioned at different locations corresponding to each printhead. This eliminates the need for a single moving heat source and allows continuous heating at multiple points along the print medium path, maintaining temperature without rapid drops.
Solution Approach 2:
The patent introduces stationary heating lamps as intermediary heating elements positioned between the printheads and the print medium path. These stationary lamps act as mediators that transfer thermal energy to the print medium at precise locations without requiring movement, solving the temperature drop problem associated with moving heat sources.
3Productivity
If multiple printheads are attached to the same carriage, then printing efficiency is improved, but the print medium cools below optimal temperature by the time distant printheads eject marking fluid
Solution Approach 1:
The patent assigns a dedicated heating lamp to each printhead, creating multiple localized heating zones along the print medium path. This allows simultaneous heating at multiple points, ensuring that portions of the print medium for distant printheads are heated to optimal temperature even as the carriage moves, maintaining temperature consistency across all printhead ejection points.
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
This approach ensures higher image quality by providing consistent heat absorption for ink droplets while reducing power consumption and eliminating the need for extensive heating of unused print medium areas.
Implementation Method 1
a carriage includes a plurality of heating lamps disposed in front of a plurality of printheads... heating a print medium moving in relation to the carriage to a specified temperature
Implementation Method 2
droplets of marking fluid ejected from a printhead can absorb a specified amount of heat from a pre-heated print medium upon landing
Data Source
AI summary
A system for pre-heating print media includes a carriage: a plurality of printheads disposed on the carriage; and a plurality of heating lamps disposed on the carriage such that each of the printheads is associated with at least one of the heating lamps. Each of the heating lamps heats a corresponding portion of a print medium prior to arrival of a printhead associated with that heating lamp at that portion of the print medium.