Thermal Transfer Printer Protective Layer Energy Control
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Thermal transfer printers face issues with print quality degradation due to matter generated from the ink ribbon adhering to the thermal head, leading to unevenness and damage, and existing solutions that reduce friction accumulation wear the thermal head, reducing its durability.
Innovation Solution
A thermal transfer printer with a control unit that adjusts the transfer energy of the protective material within a predetermined range to minimize ribbon waste adherence, combined with a platen roller configuration and controlled transfer speed to maintain print quality and prevent thermal head wear.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If inorganic filler is added to the heat-resistant lubricating layer to enhance cleaning ability and reduce accumulation of ribbon waste, then the cleaning ability is improved, but the thermal head surface is worn, reducing durability
Solution Approach 1:
The patent replaces durable inorganic filler with organic filler that can be easily consumed and replaced. The organic filler acts as a sacrificial cleaning agent that wears down ribbon waste accumulation through friction, then can be replenished without damaging the thermal head surface, resolving the contradiction between cleaning effectiveness and head durability
Solution Approach 2:
The patent changes the material composition parameter of the lubricating layer from inorganic to organic filler, fundamentally altering the interaction mechanism with the thermal head. This parameter change allows the filler to provide cleaning action through controlled friction while being replaceable, thus protecting the thermal head from irreversible wear
2Force
If transfer energy is increased to reduce friction and prevent ribbon waste accumulation, then friction is reduced, but the protective material becomes mat and loses glossiness
Solution Approach 1:
The patent modifies the lubricating layer composition by adding organic filler and adjusting the ratio of lubricant to binder resin, changing the friction characteristics. This allows effective transfer at lower energy levels, preventing the protective material from becoming mat while still reducing ribbon waste accumulation
Solution Approach 2:
The patent creates an optimized version of the lubricating layer formulation that replicates the friction-reducing benefits of high energy transfer without actually requiring high energy input. The modified composition copies the functional outcome of high-energy transfer while preserving the glossiness of the protective layer
3Object-generated harmful factors
If transfer energy is increased to reduce matter accumulation on the thermal head, then matter accumulation is reduced, but energy consumption increases
Solution Approach 1:
The organic filler in the lubricating layer provides self-cleaning functionality by continuously reducing friction and preventing ribbon waste accumulation during normal operation. This self-service mechanism eliminates the need for high energy input to remove accumulated matter, reducing energy consumption while maintaining clean thermal head surface
Solution Approach 2:
The patent applies preliminary action by incorporating friction-reducing organic filler into the lubricating layer before transfer begins. This pre-configured friction reduction prevents matter accumulation from occurring in the first place, rather than requiring high energy to remove accumulated matter after the fact, thus reducing energy consumption
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
Prevents degradation in print quality by reducing ribbon waste adherence to the thermal head while maintaining the durability of the thermal head, ensuring consistent and high-quality prints.
Implementation Method 1
the thermal head to apply heat to the ink ribbon from the side opposite to the front side on which the ink layer (colorant layer) is provided
Implementation Method 2
the lubricant and other substances contained in the heat-resistant lubricating layer 46 (back layer) are melted by the heat of the thermal head, thereby reducing friction between the ink ribbon and the thermal head
Data Source
Figure 1
Figure 2(A)~2(B)
Figure 3
AI summary
In order to prevent degradation in print quality which can come from matter generated from an ink ribbon and adhering to a thermal head, the thermal transfer printer transports an ink ribbon which has characteristics such that the amount of matter generated from the ink ribbon by transfer and adhering to the thermal head has a peak at predetermined transfer energy and reduces in an energy range higher than the predetermined transfer energy with increase in transfer energy, transfers ink and protective material onto paper in this order from the ink ribbon on which the ink and the protective material are repeatedly arranged in a longitudinal direction thereof, and adjusts transfer energy for the protective material to a value within a predetermined range. The lower limit of the predetermined range is higher than the predetermined transfer energy and minimum energy at which the protective material can be transferred, and is a value sufficient for transfer of the protective material to reduce matter having adhered to the thermal head since transfer of the ink. The upper limit of the predetermined range is lower than an energy value at which the protective material becomes mat and thereby glossiness of a protective layer on the paper formed from the protective material is lost.