Inkjet Drum Wiper Circumferential Motion Mechanism
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Solution Overview
Problem
The existing inkjet recording apparatus requires a complicated mechanism for the wiper to move from a standby position to an opposing position for wiping the ejection surface, which complicates the wiping operation.
Innovation Solution
An inkjet recording apparatus with a wiper-moving mechanism that moves the wiper in the circumferential direction along the outer surface of the drum to wipe the ejection surface, eliminating the need for axial movement and simplifying the wiping process, utilizing a control unit to manage the wiper's position during the wiping operation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the wiper moves from standby position to opposing position in the circumferential direction and then reciprocates in the axial direction for wiping, then the ejection surface can be wiped, but the mechanism becomes complicated
Solution Approach 1:
The invention extracts the axial reciprocating motion from the wiper mechanism by fixing the wiper in the axial direction. The wiper only moves in the circumferential direction along with the drum rotation, eliminating the need for complex axial movement mechanisms while maintaining effective wiping contact with the ejection surface.
Solution Approach 2:
The wiper motion is merged with the drum rotation motion. The wiper moves in the circumferential direction synchronized with the drum's rotation, combining two motions into one coordinated action. This eliminates the need for separate axial reciprocating mechanisms and simplifies the overall wiping system.
2Reliability
If the wiper is moved in the axial direction to wipe the ejection surface, then effective cleaning can be achieved, but the structure becomes more complex
Solution Approach 1:
The invention removes the axial movement capability from the wiper, fixing it in the axial direction. The wiping action is achieved solely through circumferential motion along the drum rotation, extracting the unnecessary axial reciprocating mechanism and simplifying the overall structure.
Solution Approach 2:
The wiper is designed to move dynamically in the circumferential direction synchronized with drum rotation, while being fixed in the axial direction. This dynamic circumferential motion provides effective wiping contact without requiring complex axial movement mechanisms.
3Area of stationary object
If the wiper moves in both circumferential and axial directions, then complete coverage of ejection surface is achieved, but the mechanism complexity increases
Solution Approach 1:
The circumferential motion of the wiper is merged with the drum rotation, allowing the wiper to cover the entire ejection surface area through synchronized circumferential movement. This eliminates the need for separate axial movement mechanisms while achieving complete wiping coverage.
Solution Approach 2:
The wiper employs dynamic circumferential motion synchronized with drum rotation to achieve complete coverage of the ejection surface. The fixed axial position combined with circumferential movement provides effective wiping across the entire surface area without complex multi-directional mechanisms.
Data Source
AI summary
An inkjet recording apparatus of the present invention includes: a drum which conveys a recording medium, a wiper extended in the axial direction of the drum, and inkjet heads aligned in the circumferential direction of the drum along the outer circumferential surface of the drum. The inkjet heads are moved by a head-moving mechanism to be in a recording position or a wiping position. The wiper-moving mechanism moves the wiper in the circumferential direction along the outer circumferential surface so that the wiper wipes ejection surface of at least one of the inkjet heads while the inkjet heads are in the wiping position.