Inkjet Printer Ink Amount Measurement via Color Sampling

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Solution Overview

Problem

Current methods for determining the total amount of ink in inkjet printing devices are highly subjective and prone to variations, leading to inconsistent inkjet printing quality due to individual differences in color perception.

Innovation Solution

A method and apparatus that involve printing a sampling figure, measuring its color using a device, and determining the total ink amount based on these measurements, which includes printing CMY and CMYK color blocks and using equations to calculate the ink amount, thereby reducing subjective influence.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Manufacturing precision

If the ink amount is increased to improve printing coverage and color saturation, then the printing quality improves, but ink pilling and flowing occur causing image quality degradation

Engineering Contradiction:
Improveprinting qualityVSAvoidink pilling and flowing
Core Design Contradiction:
Manufacturing precisionVSObject-generated harmful factors

Solution Approach 1:

The patent changes the parameter of total ink amount from a fixed or subjectively determined value to a dynamically optimized value. By establishing a relationship between total ink amount and individual color channel ink amounts (C, M, Y, K), the system可以找到 the optimal ink distribution that prevents pilling while maintaining printing quality. The measuring device provides objective data to determine the maximum total ink amount that avoids harmful effects.

Inventive Principle:
Principle #35Parameter changes

2Ease of operation

If manual observation method is used to determine total ink amount, then the process is simple, but the result is highly affected by subjective factors

Engineering Contradiction:
Improvedetermination process simplicityVSAvoidtotal ink amount determination accuracy
Core Design Contradiction:
Ease of operationVSMeasurement precision

Solution Approach 1:

The patent replaces the manual visual observation method with an automated measuring device system. The measuring device objectively measures the printed sampling figure and calculates the total ink amount without human intervention. This substitution eliminates subjective factors while maintaining operational simplicity through automation, achieving both high measurement precision and ease of operation.

Inventive Principle:
Principle #28Mechanics substitution (Replace mechanical system)

Solution Approach 2:

The system performs self-measurement and self-determination of the total ink amount. The measuring device automatically measures the printed output, and the system itself calculates and determines the appropriate total ink amount threshold without requiring operator experience or subjective judgment. This self-service approach ensures consistent, objective results.

Inventive Principle:
Principle #25Self-service

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

This approach allows for accurate and automatic determination of the total ink amount, improving inkjet printing quality by minimizing ink pilling and flow issues, and ensuring consistent gradation.

Implementation Method 1

measuring the color of the sampling figure by a measuring device

Methodology Applied
Scientific EffectColor measurement: Absorption (EM radiation)

Data Source

PatentUS8876250B2Method and device for measuring total amount of ink in ink-jet printing apparatus
Publication Date: 2014.11.04 NEW FOUNDER HLDG DEV LLC
  • US8876250B2 patent drawing
  • US8876250B2 patent drawing
  • US8876250B2 patent drawing

AI summary

The application discloses a method for measuring the total amount of ink of an inkjet printing device. The method may include: printing a sampling figure (S10); measuring the color of the sampling figure by a measuring device (S20); and determining the total amount of ink according to the measurements (S30). The application also discloses an apparatus for measuring the total amount of ink of an inkjet printing device. The apparatus may include a printing module (10) configured to print a sampling figure; a measuring device (20) configured to measure the color of the sampling figure by a measuring device; and a determining module (30) configured to determine the total amount of ink according to the measurements. The method and the apparatus can improve the inkjet printing quality.