Carriage Retry Logic for Image Recording Apparatus Load Regions
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing image recording apparatuses face difficulties in efficiently executing retry processing due to loads caused by switching levers, which complicates the carriage's movement towards a target position, especially when stopped between specific load regions.
Innovation Solution
The apparatus includes a carriage with a driving member, detectors, first and second load applicators, and a controller that manages these loads by identifying peak load positions and executing retry processes based on the detected stop positions relative to these loads, allowing for efficient movement and retry processing.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the carriage is moved toward the target position considering only capping as a load, then the retry processing can be executed for capping operations, but the retry processing cannot be efficiently executed when the carriage is stopped due to other loads such as the switching lever
Solution Approach 1:
The patent applies universality by creating a retry processing mechanism that handles multiple types of loads (capping load, switching lever load, and other unspecified loads) through a single unified control strategy. The controller identifies the stop position relative to multiple load regions (first load region with first highest-load position, second load region with second highest-load position) and executes appropriate retry processing based on the detected stop position, making the system adaptable to various load conditions rather than being specialized for only one type of load
Solution Approach 2:
The patent applies parameter changes by modifying the retry processing parameters (movement direction, target position, speed profile) based on the detected stop position relative to the load regions. When the stop position is between the first highest-load position and second highest-load position, the controller changes the retry strategy by moving the carriage in the first direction to a first retry position downstream of the restoration position, rather than using the conventional retry strategy designed for capping operations
2Device complexity
If the carriage executes retry processing without considering the switching lever load, then the control logic remains simple, but the carriage may stop between load regions causing inefficient or failed retry attempts
Solution Approach 1:
The patent applies preliminary action by pre-defining multiple load regions (first load region, second load region) and their respective highest-load positions (first highest-load position, second highest-load position) along the moving path, and pre-establishing the corresponding retry processing strategies for each region. The controller detects the stop position relative to these predetermined positions and executes the appropriate pre-planned retry strategy, avoiding the need for complex real-time decision-making while ensuring efficient retry processing
Data Source
AI summary
In an image recording apparatus, a peak load that is the highest load applied to a carriage moving in a first direction in a first load region is highest at a first highest-load position. A second load is highest at a second highest-load position of a second load region. In a retry processing, when a stop position of the carriage which is detected by a detector is located between the first highest-load position and the second highest-load position, the controller moves the carriage in the first direction toward a target position after moving the carriage from the stop position in a second direction to a first retry position located downstream of a restoration position in the first direction.