Image reading device

JP2025132805APending Publication Date: 2025-09-10CANON DENSHI KK
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Patent Information

Application Number
JP2024030610
Authority / Receiving Office
JP · JP
Patent Type
Applications
Current Assignee / Owner
Filing Date
2024-02-29
Publication Date
2025-09-10

AI Technical Summary

Technical Problem

Existing image reading devices struggle with proper image scanning when dealing with relatively thick documents, as the movable roller may not retract properly, leading to paper jams or image distortions.

Method used

The image reading device is configured with a movable roller that can separate from a fixed roller in a direction inclined towards the downstream side based on the document's thickness, using a groove or eccentric cam to adjust the biasing force and angle, allowing smooth conveyance of documents.

Benefits of technology

This configuration enables proper image reading of thick documents without jams or distortions, maintaining scanning accuracy and reducing unnecessary stress or vibration.

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Abstract

To appropriately achieve image reading with a relatively simple configuration even when a reading target is a relatively thick manuscript.SOLUTION: An image reading device includes: a manuscript placement section on which a manuscript is placed; an image reading unit for reading an image on the manuscript; and a pair of rollers for clamping and transporting the manuscript. The pair of rollers include a fixed roller and a movable roller that abuts on the fixed roller. When a tangential direction of the fixed roller and the movable roller that abut on each other is defined as a first direction, the movable roller is configured to be separable from the fixed roller in a direction inclined from a second direction orthogonal to the first direction toward a downstream side in a conveying direction of the manuscript according to a thickness of the read manuscript.SELECTED DRAWING: Figure 6
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Citation Information

Patent Citations

  • Image reading device

    JP6879466B2