Dual Removal Units for Liquid Ejecting Apparatus Paper Jam Prevention
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Solution Overview
Problem
Liquid ejecting apparatuses face issues with adhering objects, such as paper particles, clogging nozzles and leading to print quality drops, and existing solutions complicate device configuration with movement mechanisms to avoid paper jams.
Innovation Solution
A liquid ejecting apparatus with dual removal units, one on each side of the medium, partially overlapping in the transport direction, with ends distanced to prevent paper jams, and configured to remove adhering objects without inhibiting medium transport, using curved surfaces and biased members for enhanced contact and collection.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If removal members are disposed in the transport path to remove adhering objects, then adhering objects can be removed from the medium, but the medium transport can be inhibited causing paper jams
Solution Approach 1:
The removal mechanism is divided into multiple removal members (first removal member and second removal member) that are disposed at different positions. Each removal member has a specific removal portion that contacts the medium, while other portions are positioned to avoid obstructing transport. This segmentation allows the system to remove adhering objects effectively without causing paper jams, as the removal members are distributed along the transport path rather than blocking it entirely.
2Reliability
If removal members are disposed to contact the leading end of the medium for removing adhering objects, then adhering objects at the end areas can be removed, but the device configuration becomes complicated with movement mechanisms
Solution Approach 1:
Instead of moving the removal members to contact the leading end of the medium (as in conventional approaches), this invention inverts the approach by having the removal members stationary and positioning them to contact the medium at specific locations along the transport path. The first removal member contacts the leading end area while the second removal member contacts other areas, eliminating the need for complex movement mechanisms while still achieving effective removal of adhering objects at end areas.
Data Source
AI summary
A liquid ejecting apparatus includes a liquid ejecting unit that ejects ink onto paper, a first removal portion that removes adhering objects that have adhered to the paper by making contact with a first surface of the paper during transport of the paper, and a second removal portion that removes adhering objects that have adhered to the paper by making contact with a second surface of the paper during transport of the paper. The first removal portion and the second removal portion are disposed so as to partially overlap in the transport direction of the paper and so that ends of the first removal portion and the second removal portion on an upstream side in the transport direction are distanced from each other in the transport direction.