Toner Release Agent Hydrocarbon Composition Offset Resistance
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Solution Overview
Problem
Conventional toner fixing methods using heated rollers or belts often result in offset issues due to toner fusion, and the releasability of release agents deteriorates over time, leading to filming and heat stability problems.
Innovation Solution
A toner formulation incorporating a release agent with a hydrocarbon compound having 2-16 carbon atoms, at concentrations of 1000 ppm or more, and specific retention times, which improves interface tension and dispersibility, enhancing filming resistance and heat-resistant storage stability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a release agent is added to prevent toner offset during fixing, then offset resistance is improved, but the release agent deteriorates over time causing filming and heat stability problems
Solution Approach 1:
The patent changes the chemical composition parameters of the release agent by specifying hydrocarbon compounds with 2-16 carbon atoms and particular retention times (6.5-7.5 minutes). This parameter optimization ensures the release agent maintains effective offset resistance while preventing deterioration and filming over time
Solution Approach 2:
The patent creates a composite release agent system by combining specific hydrocarbon compounds (C2-16) with defined retention time characteristics. This composite approach provides both immediate offset prevention and long-term stability, avoiding the filming issues that plague conventional single-component release agents
2Object-affected harmful factors
If conventional release agents are used to prevent toner fusion, then offset is prevented initially, but releasability deteriorates leading to filming on the member
Solution Approach 1:
The patent optimizes the molecular weight parameters of the release agent by selecting hydrocarbon compounds with 2-16 carbon atoms and specific retention times. This parameter control ensures the release agent effectively prevents toner fusion while maintaining low molecular weight characteristics that prevent filming formation on heated members
Solution Approach 2:
The patent employs low molecular weight hydrocarbon compounds (C2-16) that function as temporary, effective release agents during the fixing process. These compounds provide sufficient releasability for offset prevention while their controlled properties prevent long-term accumulation and filming on the heated member surface
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 toner achieves excellent filming resistance and heat-resistant storage stability, preventing offset and maintaining image quality over time.
Implementation Method 1
interface tension of the release agent with respect to a binder resin is reduced, and thus the dispersibility of the release agent is improved
Implementation Method 2
a method in which a heated roller or a belt is used to heat and melt toner to fix the toner
Implementation Method 3
as determined by gas chromatography mass spectrometry
Data Source
AI summary
A toner includes a release agent. The release agent includes a hydrocarbon compound having 2 or more and 16 or less carbon atoms. A content of the hydrocarbon compound having 2 or more and 16 or less carbon atoms, in the release agent, is 1000 ppm or more in terms of toluene, as determined by gas chromatography mass spectrometry. The hydrocarbon compound having 2 or more and 16 or less carbon atoms includes a hydrocarbon compound having a retention time of 7 minutes or more and less than 8 minutes determined by the gas chromatography mass spectrometry.