Image Forming Apparatus Identification Mark for Toner Distinction
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Solution Overview
Problem
Existing image forming technologies face difficulties in distinguishing between prints made using decolorable and non-decolorable toner, especially when using black toner, as it is hard to visually differentiate between the two in monochrome and color printing.
Innovation Solution
An image forming apparatus that includes both non-decolorable and decolorable recording material printing devices, with an identification mark adding section to indicate whether printing is done with non-decolorable or decolorable toner, using a visible identification mark to differentiate between the two.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If black toner is used for printing with decolorable toner, then the printing cost is reduced and the appearance is improved, but it becomes difficult to distinguish from printing with non-decolorable toner
Solution Approach 1:
The patent uses color changes to resolve the contradiction. A visible identification mark in a specific color (such as yellow) is superimposed on the black printed image. This color mark allows easy visual distinction between decolorable and non-decolorable printing while maintaining the overall black appearance and minimizing impact on printing cost.
Solution Approach 2:
The identification mark acts as an intermediary element between the decolorable toner and the detection system. This mark provides a visual signal that mediates the distinction between decolorable and non-decolorable printing without changing the primary black color of the printed content, thus resolving the detection difficulty while maintaining cost efficiency.
2Difficulty of detecting and measuring
If blue ink is used for decolorable toner printing, then it becomes easy to distinguish from non-decolorable printing, but the readability and aesthetic quality deteriorates
Solution Approach 1:
Instead of using blue ink for the entire printed content, the patent applies color changes selectively to a small identification mark. The main printed text remains in black for optimal readability, while a subtle colored mark (e.g., yellow) indicates decolorable toner usage. This resolves the contradiction by providing distinction without compromising overall readability.
Solution Approach 2:
The patent applies the identification mark locally rather than globally. Only a small portion of the printed output (the identification mark) contains the distinguishing color, while the majority of the printed content remains in black for optimal readability. This local application of color quality resolves the contradiction between distinguishability and readability.
3Difficulty of detecting and measuring
If an identification mark is added to indicate decolorable toner printing, then the distinguishability is improved, but the device complexity increases
Solution Approach 1:
The patent merges the identification mark function with the existing printing system. The mark is formed using the same printing mechanism and toner application process as the main printed content, eliminating the need for separate marking hardware. This integration reduces device complexity while still providing clear distinction between decolorable and non-decolorable printing.
Solution Approach 2:
The printing system is designed to perform multiple functions: it prints the main content and simultaneously forms the identification mark using the same decolorable toner and printing mechanism. This multi-functionality eliminates the need for dedicated marking equipment, thereby reducing device complexity while maintaining distinguishability.
Data Source
AI summary
In accordance with one embodiment, an image forming apparatus with a first printing device configured to carry out printing with a non-decolorable recording material, second printing device configured to carry out printing with a decolorable recording material, the color of which is same or same color system of the color of the non-decolorable recording material; and an identification mark adding section configured to add, to a record receiving member printed by at least one of the first printing device and the second printing device, an identification mark indicating which one of the first and second printing devices is used for printing.