Developer Cartridge Refilling via Residual Toner Measurement
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing methods for refilling developer cartridges in laser printers require complete toner removal and cleaning, leading to increased time and effort, and inability to accurately measure residual toner amounts, resulting in cost and efficiency issues.
Innovation Solution
A method involving the measurement of residual toner weight in the cartridge to determine if it's below a predetermined threshold, allowing for refilling with new toner of the same or darker color without cleaning, using a polymerization method for the toner and incorporating a rib system for color differentiation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If complete toner removal and cleaning is performed before refilling, then image quality is maintained, but time and effort increase significantly
Solution Approach 1:
The patent extracts only the necessary action (removing excessive toner above a threshold level) rather than performing complete cleaning. The determining device measures residual toner amount and identifies when toner should be removed, allowing refilling to proceed without exhaustive cleaning while maintaining image quality.
Solution Approach 2:
The patent introduces a quantitative parameter (residual toner amount threshold) to determine when cleaning is necessary. By measuring toner amount and comparing against a predetermined threshold, the system objectively determines the refilling condition, replacing subjective visual inspection with precise measurement.
2Ease of operation
If residual toner amount is not accurately measured, then refilling process is simplified, but complete toner removal cannot be confirmed leading to quality issues
Solution Approach 1:
The determining device provides feedback about the actual residual toner amount in the cartridge. This measurement feedback enables operators to make informed decisions about whether refilling is needed and what level of cleaning is required, replacing guesswork with data-driven decisions.
Solution Approach 2:
The patent replaces manual visual inspection methods with an automated determining device that uses electrical or optical measurement principles. This substitution provides objective, quantifiable measurements of residual toner amount, enabling precise determination of refilling conditions.
3Productivity
If new toner is refilled without removing old toner, then refilling time is reduced, but color mixing may occur affecting image quality
Solution Approach 1:
The patent applies partial action by removing only the excess toner above a predetermined threshold level rather than removing all toner. This partial removal is sufficient to prevent color mixing issues while minimizing the cleaning effort required, enabling faster refilling.
Solution Approach 2:
The patent uses a predetermined threshold parameter for residual toner amount to determine when removal is necessary. This quantitative criterion allows operators to objectively decide the extent of cleaning needed, balancing speed and quality requirements.
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
Enables efficient and accurate refilling of developer cartridges, reducing the need for extensive cleaning and time, while maintaining image quality and allowing for easy identification of toner color, thus improving the recycling and reuse process.
Implementation Method 1
A weight of the residual toner in the cartridge is measured on the basis of a weight of a developer cartridge
Implementation Method 2
when it is manufactured by a polymerization method
Implementation Method 3
the toner is subjected to frictional charging between the feeder roller and the developer roller
Implementation Method 4
the toner, which has been carried on the surface of the developer roller that is the thin layer, is opposite to the photosensitive drum, the toner develops an electrostatic latent image so as to form a visible image
Data Source
AI summary
In a method of refilling a developer cartridge, a container that contains an original developer manufactured by a polymerization method is prepared. A new developer manufactured by the polymerization method is refilled in the container without cleaning an inside of the container. The new developer includes the same color as the original developer or a color darker than the color of the original developer.