US 12,497,254 B2Granted

Medium transport device and recording device

AssigneeSeiko Epson Corporation

InventorsKeita Hanaoka, Ryoichi Morisawa

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Abstract

A medium transport device includes a first roller 9, a second roller 11, a first rotation shaft 13 supporting the first roller, a displacement mechanism 15 configured to displace the first rotation shaft to a first position P1 where the first roller and the second roller are configured to nip the medium and to a second position P2 where both 9 and 11 are separated from each other, and a door 7 configured to rotate into an opened position and into a closed position around an axis that intersects the first rotation, wherein the door includes an acting section 17, the displacement mechanism includes an action receiving section 19, and when the door 7 rotates to the closed position and the acting section 17 no longer pushes the action receiving section 19, the displacement mechanism displaces the first rotation shaft 13 from the first position to the second position.

Claims13

Dependent claims

A medium transport device comprising:

a first roller configured to transport a medium;
a second roller configured to nip the medium together with the first roller;
a first rotation shaft configured to rotatably support the first roller;
a displacement mechanism configured to displace the first rotation shaft to a first position where the first roller and the second roller can nip the medium and a second position where the first roller is separated from the second roller;
a device main body configured to support the displacement mechanism;
and
a door that is configured to open and close around a second rotation shaft, which is provided as a rotation fulcrum extending in a direction intersecting the first rotation shaft, and that is configured to rotate to an opened position at which the door opens with respect to the device main body and to a closed position at which the door closes with respect to the device main body, wherein
the door includes an acting section,
the displacement mechanism includes an action receiving section,
when the door is at the closed position,
the acting section and the action receiving section are in contact with each other and
the first rotation shaft is located at the first position,
when the door is at the opened position,
the acting section and the action receiving section are separated from each other and
the first rotation shaft is positioned at the second position,
the displacement mechanism includes
a first cam that is provided on one end of the first rotation shaft and that is configured to rotate around a first shaft,
a second cam that is provided on another end of the first rotation shaft and that is configured to rotate around a second shaft,
a first contact section that is configured to rotate integrally with the first cam around the first shaft and that is configured to contact the one end of the first rotation shaft, and
a second contact section that is configured to rotate integrally with the second cam around the second shaft and that is configured to contact the other end of the first rotation shaft and
when the acting section no longer pushes the action receiving section,
the first cam rotates and the first contact section comes into contact with the one end of the first rotation shaft to move the one end of the first rotation shaft,
the second cam rotates and the second contact section comes into contact with the other end of the first rotation shaft to move the other end of the first rotation shaft, and
the first rotation shaft is displaced from the first position to the second position.

21 more elements

A medium transport device comprising:

a first roller configured to transport a medium;
a second roller configured to nip the medium together with the first roller;
a first rotation shaft configured to rotatably support the first roller;
a displacement mechanism configured to displace the first rotation shaft to a first position where the first roller and the second roller can nip the medium and a second position where the first roller is separated from the second roller;
a device main body configured to support the displacement mechanism;
and
a door that is configured to open and close around a second rotation shaft, which is provided as a rotation fulcrum extending in a direction intersecting the first rotation shaft, and that is configured to rotate to an opened position at which the door opens with respect to the device main body and to a closed position at which the door closes with respect to the device main body, wherein
the door includes an acting section,
the displacement mechanism includes an action receiving section,
when the door is at the closed position,
the acting section and the action receiving section are in contact with each other and
the first rotation shaft is located at the first position, and
when the door is at the opened position,
the acting section and the action receiving section are separated from each other and
the first rotation shaft is positioned at the second position,
the displacement mechanism includes
a first cam that is provided on one end of the first rotation shaft and that is configured to rotate around a first shaft,
a second cam that is provided on another end of the first rotation shaft and that is configured to rotate around a second shaft,
a first contact section that is configured to rotate integrally with the first cam around the first shaft and that is configured to contact the one end of the first rotation shaft, and
a second contact section that is configured to rotate integrally with the second cam around the second shaft and that is configured to contact the other end of the first rotation shaft and
when the door is at the opened position,
the first contact section contacts the one end of the first rotation shaft,
the second contact section contacts the other end of the first rotation shaft, and
the first rotation shaft is located at the second position.

21 more elements

A medium transport device comprising:

a first roller configured to transport a medium;
a second roller configured to nip the medium together with the first roller;
a first rotation shaft configured to rotatably support the first roller;
a displacement mechanism configured to displace the first rotation shaft to a first position where the first roller and the second roller can nip the medium and a second position where the first roller is separated from the second roller;
a device main body configured to support the displacement mechanism;
and
a door that is configured to open and close around a second rotation shaft, which is provided as a rotation fulcrum extending in a direction intersecting the first rotation shaft, and that is configured to rotate to an opened position at which the door opens with respect to the device main body and to a closed position at which the door closes with respect to the device main body, wherein
the door includes an acting section,
the displacement mechanism includes an action receiving section,
when the door is at the closed position, the acting section is in contact with and presses the action receiving section,
the displacement mechanism is configured so that when the door rotates from the closed position to the opened position and the acting section no longer pushes the action receiving section, the displacement mechanism displaces the first rotation shaft from the first position toward the second position,
the displacement mechanism includes
a first cam that is provided on one end of the first rotation shaft and that is configured to rotate around a first shaft,
a second cam that is provided on another end of the first rotation shaft and that is configured to rotate around a second shaft,
a first contact section that is configured to rotate integrally with the first cam around the first shaft and that is configured to contact the one end of the first rotation shaft, and
a second contact section that is configured to rotate integrally with the second cam around the second shaft and that is configured to contact the other end of the first rotation shaft and
when the acting section no longer pushes the action receiving section,
the first cam rotates and the first contact section comes into contact with the one end of the first rotation shaft to move the one end of the first rotation shaft,
the second cam rotates and the second contact section comes into contact with the other end of the first rotation shaft to move the other end of the first rotation shaft, and
the first rotation shaft is displaced from the first position to the second position.

17 more elements

Dependencies are inferred from the claim text.

Facts

Application: 18/168,835Filed 14 Feb 2023
Priority: JP 2022-02189216 Feb 2022
Published: US 2023/0257222 A117 Aug 2023
Granted: 16 Dec 2025
Term ends: Not estimatedThe source records don’t support an estimate.

Classification14 codes

B65H 5/062
By rollers or balls, e.g. between rollers: between rollers or balls
B41J 13/025
Rollers: special roller holding or lifting means, e.g. for temporarily raising one roller of a pair of nipping rollers for inserting printing material
B41J 29/13
Guards, shields or dust excluders: cases or covers
G03G 21/1633
Means to access the interior of the apparatus: using doors or covers

Family

US 2023/0257222 A1Pre-grant publication · published 17 Aug 2023
US 12,497,254 B2This patent

From the US filing history. Foreign family members aren’t listed.

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