Handheld Printer Guiding Mechanism for Print Area Positioning

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Solution Overview

Problem

Handheld printing apparatuses face difficulties in accurately setting the start position of printing due to the print head being hidden by the portable housing, making it challenging for users to grasp the precise position on the printing medium.

Innovation Solution

A printing apparatus with a housing that includes an opening region to expose the printing mechanism and a guiding mechanism above the print area, allowing users to intuitively set the start position by aligning the printing start button with the desired position on the printing medium.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If the print head is provided on the surface of the portable housing, then the printing mechanism is protected and integrated, but the print head becomes hidden and users cannot grasp its accurate position

Engineering Contradiction:

Improveintegration of printing mechanismVSAvoidvisibility of print head position

Core Design Contradiction:

ReliabilityVSDifficulty of detecting and measuring

Solution Approach 1:

A guiding mechanism (light source) is introduced as an intermediary element that projects light onto the printing medium to indicate the print area position. This mediator allows users to see the print head position indirectly through the projected light pattern, resolving the contradiction between protecting the integrated print head and making its position visible.

Inventive Principle:

Principle #24Intermediary (Mediator)

2Device complexity

If the print head is hidden by the portable housing, then the housing structure remains compact and simple, but users cannot intuitively set the start position of printing

Engineering Contradiction:

Improvesimplicity of housing structureVSAvoidease of setting start position

Core Design Contradiction:

Device complexityVSEase of operation

Solution Approach 1:

The guiding mechanism acts as an intermediary that provides visual feedback about the print area position without requiring structural changes to the housing. Users can easily set the start position by aligning the projected light pattern with the desired location, maintaining housing simplicity while improving operational ease.

Inventive Principle:

Principle #24Intermediary (Mediator)

Solution Approach 2:

The guiding mechanism uses light emission (change in optical state) to indicate the print area position. The projected light pattern provides clear visual cues that help users intuitively set the start position without complicating the housing structure.

Inventive Principle:

Principle #32Color changes

3Device complexity

If no guiding mechanism is provided, then the device structure remains simple, but users cannot accurately align the print head with the desired position on the printing medium

Engineering Contradiction:

Improvesimplicity of device structureVSAvoidprecision of position alignment

Core Design Contradiction:

Device complexityVSMeasurement precision

Solution Approach 1:

The guiding mechanism provides an intermediary visual reference (projected light pattern) that enables precise alignment between the print head and the desired position on the printing medium. This addition of a relatively simple guiding component significantly improves measurement precision without substantially increasing overall device complexity.

Inventive Principle:

Principle #24Intermediary (Mediator)

Data Source

PatentUS10124607B2Printing apparatus including a guiding mechanism that represents a position of a print area

Publication Date: 2018.11.13 CASIO COMPUTER CO LTD

AI summary

A printing apparatus comprises: a printer that includes a printing mechanism that performs printing on a printing medium, the printing mechanism being provided in a print area; a housing that includes an opening region for exposing the printing mechanism to outside; and a guiding mechanism that represents a position of the print area. The guiding mechanism is provided at a position directly above the print area and visible from outside. Accordingly, when a user performs printing on the printing medium using this printing apparatus, the user can easily grasp a position of the print area by means of the guiding mechanism, and therefore can print on a desired position on the printing medium.