Printer Cooling Mechanism for Temperature-Sensitive Ink Visualization
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Solution Overview
Problem
Conventional printers lack a suitable mechanism to control the color change of temperature-sensitive ink, making it difficult to determine if images formed with such ink are successfully printed, as the color change can render the images invisible at normal temperatures.
Innovation Solution
A printer is equipped with a cooling mechanism that includes a spouting portion for gas, which reduces the temperature of the temperature-sensitive ink images, allowing them to become visible and facilitating the verification of image formation. This mechanism is integrated into the conveyance path downstream of the cutter and utilizes adiabatic expansion or latent heat to cool the ink images.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If temperature-sensitive ink is used to form images on a medium, then the ink provides temperature indication functionality, but the images become invisible at normal temperatures due to color change
Solution Approach 1:
The patent utilizes temperature-sensitive ink that changes color based on temperature, allowing the medium to indicate temperature conditions. The system accepts and processes these color changes as meaningful information rather than treating them as defects, thereby resolving the contradiction between functionality and detectability.
Solution Approach 2:
A sensor is introduced as an intermediary device to detect the color state of the temperature-sensitive ink and convert it into electrical signals. This mediator enables the system to 'see' and process the temperature indication even when the color change renders the image invisible to human eyes, thus resolving the detection difficulty.
2Device complexity
If conventional printing mechanisms are used without temperature control, then the printing process is simple, but the color change of temperature-sensitive ink causes problems with image verification
Solution Approach 1:
The patent implements a feedback mechanism where sensors continuously monitor the color state of the temperature-sensitive ink after printing. This feedback information is processed by a control unit that can determine whether printing was successful based on the detected color, thereby enabling reliable verification without significantly complicating the overall printing process.
Solution Approach 2:
The patent replaces manual visual inspection of printed images with an automated optical sensing system. The sensor detects color changes and converts them into electrical signals for processing, substituting mechanical/visual verification with an automated detection system that reliably verifies image formation even when colors change.
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
The cooling mechanism effectively visualizes temperature-sensitive ink images, enabling easy verification of their formation and ensuring that images are visible, thus addressing the challenge of color change-induced invisibility.
Implementation Method 1
This mechanism is integrated into the conveyance path downstream of the cutter and utilizes adiabatic expansion or latent heat to cool the ink images.
Implementation Method 2
This mechanism is integrated into the conveyance path downstream of the cutter and utilizes adiabatic expansion or latent heat to cool the ink images.
Data Source
AI summary
A printer comprises a conveying unit configured to convey a medium. The printer includes an image forming unit provided in a conveyance path of the medium, the image forming unit being configured to form an image with a temperature-sensitive ink, whose color is changed depending on a temperature, on the medium. A cutter for cutting the medium is provided in the conveyance path downstream of a medium conveyance direction of the image forming unit. Further, a coloring conversion unit is provided in the conveyance path downstream of a medium conveyance direction of the cutter. The coloring conversion unit is configured to change a coloring state of the image of the temperature-sensitive ink by heating or cooling the image of the temperature-sensitive ink formed on the cut medium.