Printer Reader Placement on Take-Up Path for Compact Print Checks

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Solution Overview

Problem

Existing printers face challenges in integrating a reading unit for print quality check near the discharge outlet without increasing the printer's size.

Innovation Solution

The reading unit is positioned on the take-up path or a secondary discharge path within the printer, allowing print quality checks without enlarging the device.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Measurement precision

If the reading unit is arranged near the discharge outlet to check print quality, then the print quality check function is improved, but the printer size increases

Engineering Contradiction:

Improveprint quality checkVSAvoidprinter size

Core Design Contradiction:

Measurement precisionVSVolume of moving object

Solution Approach 1:

The reading unit is positioned in the vertical direction (below the head) rather than extending the horizontal discharge path, utilizing the Z-dimension to fit the reading function within the existing printer footprint without increasing its overall volume

Inventive Principle:

Principle #17Another dimension (Dimensionality change)

Solution Approach 2:

The reading unit is integrated into the existing printer structure by positioning it in the space below the head assembly, effectively nesting the reading function within the current device boundaries rather than adding it as a separate external component

Inventive Principle:

Principle #7Nested doll (Nesting)

2Volume of moving object

If the reading unit is mounted outside the printer, then the printer size is maintained, but the device complexity increases

Engineering Contradiction:

Improveprinter sizeVSAvoidsystem integration

Core Design Contradiction:

Volume of moving objectVSDevice complexity

Solution Approach 1:

The reading unit is merged with the printer's internal structure by positioning it below the head assembly, combining the printing and reading functions into a single integrated system rather than separating them into external components

Inventive Principle:

Principle #5Merging (Combining)

3Ease of operation

If the distance from head to discharge outlet is increased to accommodate reading unit, then the reading unit can be positioned, but the printer size increases

Engineering Contradiction:

Improvereading unit positioningVSAvoidprinter size

Core Design Contradiction:

Ease of operationVSVolume of moving object

Solution Approach 1:

Instead of extending the horizontal distance from the head to the discharge outlet, the reading unit is positioned in the vertical dimension below the head, allowing adequate spacing for the reading unit without lengthening the discharge path or increasing the printer's horizontal footprint

Inventive Principle:

Principle #17Another dimension (Dimensionality change)

Data Source

PatentUS12441126B2Printer

Publication Date: 2025.10.14 BROTHER KOGYO KK

AI summary

A printer includes a medium supply unit, a head, a discharge outlet, a take-up unit, and a reader. The medium supply unit is configured to supply a medium. The head is configured to perform printing onto the medium supplied from the medium supply unit. The discharge outlet is configured to discharge the medium onto which printing has been performed by the head and conveyed along a discharge path connecting the head and the discharge outlet. The take-up unit is arranged below the head and is configured to take up the medium onto which printing has been performed by the head or backing paper with a label peeled off from the medium. The reader is arranged on a take-up path connecting the head to the take-up unit and is configured to read the medium onto which printing has been performed by the head and conveyed along the take-up path.