Printer Cutter Guide Protrusion Prevents Jamming
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Solution Overview
Problem
Existing auto-cutter systems in inkjet printers often leave uncut portions of the recording medium and cause end portions to abut the fixed blade during backfeeding, leading to potential jamming and inefficiencies in the cutting process.
Innovation Solution
A cutter device with a first blade and a second blade, where the second blade moves in a direction to cut the recording medium while leaving a part uncut, and a guide portion that protrudes or aligns with the first blade's cutting edge to prevent end portions from contacting the fixed blade during backfeeding.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If the second blade moves to cut the recording medium while leaving a part uncut, then the cutting function is achieved, but the uncut end portion may abut the fixed blade during backfeeding causing potential jamming
Solution Approach 1:
The guide portion acts as an intermediary element between the movable second blade and the fixed first blade. During backfeeding, the guide portion protrudes beyond the first cutting edge to physically block the uncut end portion of the recording medium from contacting the fixed blade, thereby preventing jamming while allowing the cutting operation to proceed efficiently
2Reliability
If the guide portion protrudes farther than the first cutting edge, then end portions are prevented from contacting the fixed blade, but the device complexity increases
Solution Approach 1:
The guide portion is merged with the movable second blade assembly, forming an integrated structure. This combination allows the guide portion to move together with the second blade during cutting operations, eliminating the need for separate guide mechanisms and reducing overall device complexity while maintaining the function of preventing end portion contact with the fixed blade
Data Source
AI summary
A cutter device, comprising: a first blade including a first cutting edge extending in a first direction; a second blade including a second cutting edge extending in a second direction; and a guide portion provided at a position anterior to the second blade in the second direction, wherein the second blade moves in the second direction to cut a recording medium while leaving a part thereof uncut, and when the second blade is located posterior, in the second direction, to a position where the second blade cuts the recording medium, at least a part of the guide portion is located to protrude farther in the first direction than the first cutting edge, or located at a same position as the first cutting edge.