Tape Cartridge Chamfered Guide for Smooth Insertion

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Solution Overview

Problem

Existing tape cartridges for tape printers face issues with the tape getting caught in the tape guide when inserted, due to the design of the tape insertion port and guide.

Innovation Solution

The cartridge design includes a tape feed port, a tape insertion port, and a tape guide with a chamfered portion at the end of the tape contact portion, allowing the tape to be inserted without getting caught.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Ease of operation

If a tape guide is provided to guide the tape feeding, then the tape feeding guidance is improved, but the tape may get caught in the tape guide when inserted

Engineering Contradiction:

Improvetape feeding guidanceVSAvoidtape insertion smoothness

Core Design Contradiction:

Ease of operationVSReliability

Solution Approach 1:

The chamfered portion is provided in advance at the end of the tape contact portion, creating a preparatory guide surface that prevents the tape from getting caught during insertion. This preliminary structural feature ensures smooth tape insertion before the tape actually contacts the guide surface.

Inventive Principle:

Principle #10Preliminary action

Solution Approach 2:

The tape contact portion has different surface qualities at different locations: the chamfered portion provides a smooth, angled surface for initial contact and guidance, while the rest of the tape contact portion provides the necessary friction and guidance for tape feeding. This local differentiation resolves the contradiction between guiding and catching.

Inventive Principle:

Principle #3Local quality

2Ease of operation

If the tape insertion port is designed for one-end insertion, then the insertion direction is controlled, but the tape may still get caught in the guide structure

Engineering Contradiction:

Improveinsertion direction controlVSAvoidtape catching in guide

Core Design Contradiction:

Ease of operationVSObject-affected harmful factors

Solution Approach 1:

The chamfered portion is positioned at the insertion end of the tape contact portion, creating a preliminary guide surface that the tape encounters first during insertion. This prevents the tape from getting caught in the guide structure while maintaining the one-end insertion design.

Inventive Principle:

Principle #10Preliminary action

Data Source

PatentUS12214587B2Cartridge

Publication Date: 2025.02.04 SEIKO EPSON CORP

AI summary

A cartridge configured to be mounted on a tape printer, the cartridge including a cartridge case, in which the cartridge case is provided with a tape feed port through which a tape fed from an accommodated tape roll is fed out of the cartridge case, a tape insertion port into which the tape is configured to be inserted in a first direction from one end portion in a width direction of the tape, and a tape guide that is positioned in the first direction with respect to the tape insertion port and guides feeding of the tape by the tape printer, the tape guide is provided with a protruding portion that comes into contact with the tape, and a tape guide chamfered portion is provided at an end portion of the protruding portion in a second direction opposite to the first direction.