Printing Apparatus Oblique Movement Ink Landing Control
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Solution Overview
Problem
Existing printing apparatuses face issues with maintaining accurate ink landing positions when moved in oblique directions due to the separate nozzle rows, leading to positional shifts during printing.
Innovation Solution
Incorporating a first and second discharger with nozzle rows separated perpendicular to each other, along with a control system that restrains multicolor printing when the apparatus operates in a mode allowing oblique movement, ensuring synchronized ink deposition.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If multiple nozzle rows are provided separately in the first direction perpendicular to the nozzle rows, then the printing apparatus can perform multicolor printing, but the landing positions of liquid from different nozzle rows shift when moved in oblique directions
Solution Approach 1:
The patent merges the control of multiple nozzle rows into a unified restraint mechanism. When oblique movement is detected, the system combines all nozzle rows into a single restrained state, preventing the positional shift issue while maintaining multicolor printing capability when moving in the first direction only.
Solution Approach 2:
The patent dynamically adjusts the printing restraint state based on movement detection. The system transitions between restrained and unrestrained states depending on whether the printing apparatus is moved in the first direction or in oblique directions, optimizing both printing quality and operational flexibility.
2Ease of operation
If the printing apparatus is moved in oblique directions, then operational flexibility is improved, but ink landing positions become inaccurate
Solution Approach 1:
The patent implements a feedback mechanism where the system detects the movement direction of the printing apparatus and automatically adjusts the printing restraint state accordingly. When oblique movement is detected, the system provides feedback to restrain printing, preventing positional inaccuracies while maintaining operational flexibility.
Solution Approach 2:
The patent applies preliminary anti-action by proactively restraining printing before oblique movement can cause ink landing position shifts. The system detects intended movement direction and preemptively activates restraint to prevent the harmful effect of positional inaccuracy.
3Manufacturing precision
If printing is restrained in first mode, then ink positional shifts are prevented, but printing productivity is reduced
Solution Approach 1:
The patent applies partial action by restraining printing only under specific conditions (when moved in oblique directions) rather than continuously. This selective restraint maintains ink landing position accuracy when needed while allowing full printing productivity when the apparatus is moved in the first direction only.
Data Source
AI summary
A printing apparatus that performs printing on a medium while being manually moved relative to the medium, the printing apparatus including a first discharger including a first nozzle row that discharges a first liquid, a second discharger including a second nozzle row that discharges a second liquid, a mode determination section that evaluates whether the printing apparatus operates in a first mode in which the printing apparatus is movable in an oblique direction with respect to a first direction or a second mode in which the printing apparatus is not movable in an oblique direction with respect to the first direction, and a first control section that restrains printing using both the first and second dischargers when the mode determination section determines that the printing apparatus operates in a first mode in which the printing apparatus operates in the first mode.