Printer Paper Registration Screen Conditional Display Logic

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Solution Overview

Problem

In existing printers, the paper registration screen is always displayed when a paper feeding cassette is inserted or removed, forcing users to input paper attributes unnecessarily and delaying printing.

Innovation Solution

A printer with a control unit that determines whether to display the paper registration screen based on specific conditions, allowing printing to proceed without displaying the screen when non-display conditions are met, thereby avoiding unnecessary input and delays.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If the paper registration screen is always displayed when a paper feeding cassette is inserted or removed, then the user can confirm or register paper attributes, but the user is forced to input paper attributes unnecessarily and printing is delayed

Engineering Contradiction:

Improvepaper attribute registration accuracyVSAvoidprinting speed

Core Design Contradiction:

ReliabilityVSProductivity

Solution Approach 1:

The system changes the parameter of screen display from always displayed to conditionally displayed. The control unit determines whether to display the paper registration screen based on whether a paper mismatch error has occurred, transforming the display behavior from static to dynamic based on error state

Inventive Principle:

Principle #35Parameter changes

Solution Approach 2:

The paper registration screen display is made dynamic by introducing conditional logic. The screen is displayed only when a paper mismatch error has occurred, and hidden when no such error exists, allowing the system to adapt its behavior based on the operational context

Inventive Principle:

Principle #15Dynamics

2Ease of operation

If the paper registration screen is always displayed when a paper feeding cassette is inserted or removed, then the user can register paper attributes, but unnecessary input is required

Engineering Contradiction:

Improvepaper attribute registrationVSAvoidtime for unnecessary input

Core Design Contradiction:

Ease of operationVSLoss of time

Solution Approach 1:

The system applies partial action by displaying the paper registration screen only when necessary (when a paper mismatch error has occurred) rather than always displaying it. This avoids excessive action of showing the screen when paper attribute registration is not needed

Inventive Principle:

Principle #16Partial or excessive action

Solution Approach 2:

The paper registration screen display function is extracted from the mandatory flow and made conditional. The system separates the screen display from the always-executed path and places it in an error-conditioned path, removing unnecessary display actions

Inventive Principle:

Principle #2Taking out (Extraction)

Data Source

PatentUS9235361B2Printer including display for displaying paper registration screen

Publication Date: 2016.01.12 SEIKO EPSON CORP

AI summary

A printer includes a printing unit, a paper feeding unit, a display unit and a control unit. The printing unit is configured and arranged to execute printing. The paper feeding unit is configured and arranged to hold paper. The display unit is configured and arranged to display a paper registration screen for registering or confirming attributes of the paper according to an operation on the paper feeding unit. The control unit is configured not to display the paper registration screen when non-display conditions have been satisfied even when the operation is performed.