Label Printer Stage Projection for Crease-Free Cutting
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Solution Overview
Problem
Label printers face issues with label bending and creasing when cutting long-sized label paper without a mount, as the adhesive layer adheres to the movable blade and causes labels to curl during the cutting and discharge process.
Innovation Solution
A label printer design featuring a stage with projection sections that correspond to the area where the movable blade is positioned lower than the stage, preventing adhesive bonding and facilitating smooth peeling of cut labels by positioning projection sections to catch labels early and reduce creasing, along with a cutting mechanism that moves a movable blade vertically to cut the label paper.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If the adhesive layer is positioned at the side of the movable blade for cutting long-sized label paper without mount, then the cutting operation can be performed, but the label bends and creases between the movable blade and the receiving member during the return to home position
Solution Approach 1:
A release paper is introduced as an intermediary component between the movable blade and the label. The release paper prevents the adhesive layer from bonding to the movable blade during the cutting operation and return stroke, eliminating the bending and creasing problem while maintaining cutting functionality
Solution Approach 2:
The adhesive layer is extracted from direct contact with the movable blade by positioning it on the opposite side of the label from the blade. This separation prevents the harmful adhesion effect that causes label deformation during the cutting cycle
2Productivity
If the adhesive layer is cut by the movable blade, then the label can be separated, but the glue adheres to the movable blade causing operational problems
Solution Approach 1:
The release paper serves as a mediator that allows the blade to cut through the label while preventing the adhesive from bonding to the blade surface. This intermediary layer enables clean cutting without the operational difficulties of adhesive buildup
Solution Approach 2:
The adhesive layer is positioned away from the blade path, extracting it from the cutting zone. This allows the blade to cut the label cleanly without the adhesive interfering with blade movement or requiring frequent cleaning
Data Source
AI summary
A label printer includes a storage section which stores label papers where an adhesive layer is arranged opposite to a printing surface; a printing section; a cutting section which cuts the printed label papers sequentially from one end to an other end of a printed label paper in a width direction of the papers by vertically moving a movable blade towards a fixed blade; a stage which is arranged at the downstream side in the paper conveyance direction of the cutting section and receives a cut label; and a projection section which is arranged in an area of the stage corresponding to a part where the movable blade of the cutting section positioned at a lowest point is positioned lower than the stage, and projects from a top surface of the stage, where the area is one third of a width of the label paper.