Inkjet Printhead Carrier Access Panel for Selective Button Exposure
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Users often inadvertently decouple the semi-permanent printhead from the printhead carrier during ink tank replacement in ink jet printers, leading to premature printhead failure and print quality issues due to repeated decoupling.
Innovation Solution
An imaging apparatus with a controller and printhead carrier drive mechanism that selectively moves the printhead carrier along a bi-directional path to position ink tank and printhead release buttons, allowing for separate access and removal of ink tanks without inadvertently releasing the printhead, thereby reducing user confusion and preventing premature printhead decoupling.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the access cover is opened to replace ink tanks, then the user can access both ink tank release buttons and printhead latch release button, but this causes user confusion and inadvertent decoupling of the printhead from the printhead carrier
Solution Approach 1:
The access cover is divided into two separate sections: a first access cover portion that provides access only to ink tank release buttons, and a second access cover portion that provides access only to the printhead latch release button. This segmentation prevents users from accidentally accessing the wrong release mechanism while maintaining ease of operation for both functions.
Solution Approach 2:
Different portions of the access cover have different functional properties: the first portion is designed with features (opening, positioning) that locally enable access to ink tank release buttons while blocking access to the printhead latch release button, and vice versa for the second portion. This local differentiation resolves the contradiction by providing targeted access control.
2Ease of operation
If the printhead carrier is made movable to position release buttons, then selective access is enabled, but the device complexity increases due to additional drive mechanisms and controller instructions
Solution Approach 1:
The printhead carrier serves multiple functions: it holds the printhead, provides the mounting structure for release buttons, and acts as a movable platform that can be positioned to selectively expose different release buttons. This multi-functionality reduces the need for separate mechanisms for each access function, thereby limiting the increase in device complexity.
Solution Approach 2:
The system uses the existing printhead carrier positioning capability (already present in ink jet printers for printing operations) to also provide selective access to release buttons. The controller that already manages printhead carrier movement during printing is extended to also manage positioning for button access, avoiding the need for additional dedicated positioning mechanisms.
Data Source
AI summary
An imaging apparatus configured for mounting a printhead, to which at least one ink tank is removably mounted, includes a print engine configured to move the printhead carrier along a bi-direction main scan path. The printhead carrier has a printhead latch having a printhead latch release button, which when actuated releases the printhead latch to allow removal of the printhead. The printhead has a respective ink tank latch for mounting the respective ink tank to a printhead body. The respective ink tank latch includes a respective ink tank release button which when actuated unlatches the respective ink tank latch to allow removal of the respective ink tank from the printhead body. An access panel has a first opening defining an ink tank removal location that permits access to the respective ink tank release button, while the access panel prevents access to the printhead latch release button.