Print Head Element Substrate With Integrated Drivers for Compact Layout
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Solution Overview
Problem
Existing printing element substrates may increase in size due to the arrangement of drivers for heating elements, which are not adequately addressed in Japanese Patent Laid-Open No. 2017-213874.
Innovation Solution
The substrate includes a driver array where first and second drivers are arranged along a first direction, with the first drivers driving energy generation elements and second drivers driving heating elements, allowing for a compact layout that reduces the overall size.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If drivers for heating elements are arranged separately from energy generation elements, then heating function is improved, but substrate size increases
Solution Approach 1:
The patent merges the drivers for energy generation elements and heating elements into a single driver array, where first drivers and second drivers are arranged adjacent to each other in the same array structure. This integration allows both heating functions to coexist in a compact configuration without requiring separate driver arrays, thereby preventing substrate size increase while maintaining reliable heating performance.
2Reliability
If distance between heat sources is increased, then heating reliability is improved, but device complexity increases
Solution Approach 1:
The patent segments the driver array into distinct regions for first drivers and second drivers, with first drivers positioned adjacent to energy generation elements and second drivers positioned adjacent to heating elements. This segmentation allows independent optimization of heating reliability through controlled distances between heat sources while maintaining a unified, manageable driver array structure that avoids excessive complexity.
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 arrangement prevents the substrate from increasing in size and allows for stable ejection of liquid while minimizing the influence of heat on drivers, achieving efficient space utilization and temperature regulation.
Implementation Method 1
a plurality of energy generation elements configured to generate energy for ejection of a liquid
Implementation Method 2
a plurality of heating elements configured to regulate a temperature of the liquid
Data Source
AI summary
An object is to provide an element substrate that can be prevented from increasing in size. An element substrate includes a plurality of energy generation elements to generate energy for ejection of a liquid, a plurality of heating elements to regulate the temperature of the liquid, first drivers to respectively drive the plurality of energy generation elements, and second drivers to respectively drive the plurality of heating elements. The plurality of energy generation elements, the plurality of heating elements, the first drivers, and the second drivers are arranged along a first direction. A single driver array in which the first drivers and the second drivers are arranged along the first direction is formed.