Printer Door Linkage for Automatic Paper Advancement
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Solution Overview
Problem
Existing printers have small openings that make it difficult to remove paper from paper trays, and flexible spacers used for paper removal are fragile and prone to causing paper jams.
Innovation Solution
A linkage apparatus with a paper compartment assembly, door assembly, and transmission mechanism that uses a gear set, propeller shaft, and rack to advance paper towards the door assembly when the door is opened, allowing easy paper removal and replacement without the need to insert hands into narrow spaces.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Volume of moving object
If the opening area of the printer door is reduced to make the printer more compact, then the portability and miniaturization are improved, but it becomes difficult for users to remove paper from the paper tray
Solution Approach 1:
The system uses the door opening action itself to drive the paper advancing mechanism. When the user opens the door, the transmission mechanism automatically converts this motion into paper advancement, eliminating the need for manual paper pulling or additional components like flexible spacers.
Solution Approach 2:
A transmission mechanism acts as an intermediary between the door assembly and the paper advancing member. This mechanism includes a gear set that converts the door opening motion into rotational motion of the propeller shaft, which then drives the rack to move the paper advancing member forward.
2Ease of operation
If flexible spacers are used to advance paper in the paper tray, then paper removal is enabled, but the spacers are fragile and prone to being rolled into the printer causing paper jams
Solution Approach 1:
The invention extracts and eliminates the flexible spacer component from the system. Instead of using a separate spacer that needs to be manually inserted and removed, the door assembly itself becomes the actuating mechanism for paper advancement through the transmission mechanism.
Solution Approach 2:
The door opening action automatically drives the paper advancing mechanism through the transmission mechanism. The system uses the user's natural door opening motion to advance the paper, eliminating the need for additional manual operations or fragile intermediary components.
3Strength
If sharp metal members or plastic members are provided at the openings of printers, then structural strength is improved, but users easily scratch their fingers when removing paper from narrow spaces
Solution Approach 1:
The paper advancing member with its advancing plate预先 extends the paper toward the door opening before the user needs to remove it. This preliminary action positions the paper end at a safe distance from the user's hand, eliminating the need for users to reach into narrow spaces near sharp components.
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
Facilitates easy and safe paper removal and replacement by transferring door movement to the paper advancing mechanism, reducing the risk of paper jams and finger injuries from sharp components.
Implementation Method 1
a gear transmission part, disposed in the base and provided with a gear set, a propeller shaft, and a rack linked to the gear set by means of the propeller shaft, wherein at least one gear in the gear set is connected to the door assembly, and, along with opening and closing movements of the door assembly, the gear set drives the propeller shaft to rotate, thus driving the rack to move in the base
Data Source
AI summary
Embodiments of the present application provide a linkage apparatus for a printer, a printer, and a medical apparatus. The linkage apparatus comprises: a paper compartment assembly, provided with a side opening, a base, a paper tray located in the base, and a paper advancing member disposed opposite the side opening, an end of the paper advancing member opposite the side opening being provided with an advancing plate extending upward; a door assembly, movably connected to the paper compartment assembly and capable of closing or opening the side opening; and a transmission mechanism, one side of which is connected to the door assembly, the transmission mechanism driving the paper advancing member to move toward the side opening along with opening of the door assembly, causing the paper advancing member to, by means of the advancing plate, advance paper in the paper tray to move toward the door assembly.