Inkjet Printer Accessory Modular Sheet Processing

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Solution Overview

Problem

Inkjet printers face challenges in efficiently handling and processing printed sheets, including tedious and time-consuming tasks such as transporting, cutting, and sorting, which can damage the sheets and hinder productivity.

Innovation Solution

An inkjet printer accessory that includes a modular design with a cutter assembly, sheet transport modules, and a controller to manage the processing of sheets, featuring belt transports with wide nips to minimize sheet damage, adjustable cutters for different sizes, and a sorter to handle multiple sheets efficiently.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Productivity

If manual handling and processing of printed sheets is used, then device complexity is reduced, but productivity decreases and sheet damage increases

Engineering Contradiction:

Improvesheet processing throughputVSAvoidaccessory system complexity

Core Design Contradiction:

ProductivityVSDevice complexity

Solution Approach 1:

The accessory is divided into separate functional modules including a cutter module, transport module, and sorter module that can be independently assembled and disassembled. Each module performs a specific function (cutting, transporting, sorting) and can be attached to or removed from the printer, allowing high productivity through automation while keeping individual components relatively simple and manageable.

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

The accessory integrates multiple sheet processing functions (cutting, transporting, sorting) into a single unified system that attaches to the printer. This multi-functional design enables the system to handle various sheet processing tasks through one device rather than requiring separate manual operations for each function, thereby improving productivity without proportionally increasing overall system complexity.

Inventive Principle:

Principle #6Universality (Multi-functionality)

2Productivity

If automated cutting and sorting is implemented, then productivity increases, but sheet damage risk increases

Engineering Contradiction:

Improvesheet processing speedVSAvoidsheet damage

Core Design Contradiction:

ProductivityVSObject-affected harmful factors

Solution Approach 1:

The transport function replaces manual mechanical handling with an automated belt transport system that gently conveys sheets through the accessory. The belt transport provides controlled, damage-free movement compared to manual handling, allowing automated processing at high speed while minimizing sheet damage through smooth, friction-based transport rather than mechanical gripping or folding.

Inventive Principle:

Principle #28Mechanics substitution (Replace mechanical system)

3Ease of repair

If modular design with multiple components is used, then ease of repair and inspection improves, but device complexity increases

Engineering Contradiction:

Improvecomponent replacement easeVSAvoidnumber of modules

Core Design Contradiction:

Ease of repairVSDevice complexity

Solution Approach 1:

The accessory employs segmentation by dividing the system into distinct functional modules (cutter, transport, sorter) that are physically separate and can be independently accessed, inspected, and replaced. This modular architecture improves ease of repair by allowing technicians to service individual modules without disassembling the entire system, while the standardized interfaces between modules keep the overall complexity manageable through systematic design.

Inventive Principle:

Principle #1Segmentation

Data Source

PatentUS8894064B2Inkjet printer accessory

Publication Date: 2014.11.25 HEWLETT PACKARD DEVELOPMENT COMPANY LP

AI summary

An accessory receives sheets from an inkjet printer.