Feeding Device Regulating Member Separation for Inkjet Media
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Conventional feeding devices for recording media suffer from poor alignment and edge damage due to lateral movement of pressure plates, leading to reduced conveying accuracy and image quality in inkjet recording apparatuses.
Innovation Solution
A feeding device with a pressure plate, feeding means, regulating members, supporting means, conveying means, and moving means that separates the regulating members from the recording media after conveying starts, reducing back tension and frictional resistance to maintain accurate alignment and prevent edge damage.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-affected harmful factors
If the pressure plate is laterally moved to move the guide members laterally, then the guide members can separate from the side edges of the recording media during recording, but the recording media may be laterally moved causing poor alignment of side edges
Solution Approach 1:
The guide member is divided into two independent parts: a guide body that remains stationary to maintain alignment, and a guide member portion that can separate from the recording media. This segmentation allows the stationary guide body to prevent lateral displacement while the separable guide member portion reduces frictional resistance during recording operations.
Solution Approach 2:
The guide member portion is extracted from the guide body and made movable relative to it. This extracted portion can be separated from the side edges of the recording media during recording, removing the harmful frictional resistance while the guide body maintains the alignment function.
2Measurement precision
If guide members regulate both edges of recording media to prevent lateral displacement, then feeding accuracy is improved, but frictional resistance acts as back tension affecting conveying accuracy
Solution Approach 1:
The guide member is designed with dynamic characteristics, allowing it to change its state between regulating (contacting) and non-regulating (separated) positions. During feeding, the guide member contacts the recording media to ensure accurate positioning. During recording, it separates to eliminate frictional resistance that would otherwise act as back tension and affect conveying accuracy.
3Stability of the object's composition
If guide members continuously contact side edges of recording media, then lateral displacement is prevented, but side edges may be folded or scratched
Solution Approach 1:
The guide member operates periodically, alternating between contacting and separating states. It contacts the side edges during feeding operations to maintain position stability, then separates during recording operations to prevent edge damage such as folding or scratching. This periodic action reconciles the need for both stability and damage prevention.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The solution enhances conveying accuracy and prevents edge misalignment and damage, ensuring stable and precise feeding and recording operations by reducing back tension and frictional resistance.
Implementation Method 1
a frictional resistance between guide members that regulate the position of a recording medium in the width direction and the side edges of the recording medium acts as a back tension
Data Source
AI summary
To achieve high conveying accuracy by reducing back tension on a recording medium being conveyed. A feeding device includes a pressure plate on which recording media are loaded; feeding means for feeding the recording media; a regulating member configured to regulate a position of a side edge of the recording media; supporting means for supporting the regulating member, the supporting means having a bottom portion on which the recording media are partially loaded; and moving means for separating the regulating member from the side edge of the recording media. The feeding means starts to feed the recording medium while the position of the side edge of the recording media is being regulated by the regulating member, and the moving means separates the regulating member from the side edge of the recording media after a conveying means starts to convey the recording medium fed by the feeding means.