JP-7856743-B2 - Media transport device, media feeding method, and control program

Inventors

• 下坂 喜一郎
• 森川 修一

Assignees

• 株式会社PFU

Dates

Publication Date

20260511

Application Date

20220304

Claims (8)

1. Mounting platform and A feed roller for sequentially feeding the medium placed on the mounting platform from the bottom, Above the aforementioned feeding roller, a separation roller is positioned opposite to the feeding roller, A restricting member is provided to be movable vertically and pushes up the medium placed on the aforementioned stand from below to restrict contact with the feeding roller, A pressing member is provided to be movable vertically and to press down on the medium placed on the aforementioned stand from above, The mounting platform includes a conveying roller positioned upstream of the feeding roller and the separation roller in the media conveying direction, A drive mechanism for driving the regulating member, the pressing member, and the conveying roller, The drive mechanism includes, before the feeding of the medium by the feeding roller and the separation roller begins, a control unit that controls the drive mechanism to move the regulating member up and down, move the pressing member up and down, and rotate the transport roller, causing the medium placed on the aforementioned stand to vibrate. The control unit rotates the transport roller when lowering the regulating member and the pressing member, and stops the transport roller when raising the regulating member and the pressing member . A media transport device characterized by the following features.
2. The control unit controls the drive mechanism to vibrate the medium placed on the aforementioned platform, by repeatedly performing a first operation: lowering the pressing member to press the medium and lowering the regulating member while rotating the transport roller; and a second operation: raising the pressing member to separate it from the medium and raising the regulating member while stopping the transport roller.
3. The media transport device according to claim 2, further comprising a receiving unit for receiving settings from the user regarding whether or not to vibrate the medium placed on the aforementioned stand, the number of repetitions of the first and second operations, or whether or not to rotate the transport roller during the first operation.
4. The aforementioned drive mechanism is The pressing member is provided with an elastic member that applies a downward force, A stopper is positioned between the pressing member and the restricting member to restrict the downward movement of the pressing member, Includes a motor that generates a driving force for moving the regulating member, The media transport device according to any one of claims 1 to 3, wherein the pressing member moves as the regulating member moves due to the driving force from the motor, and the restriction on the movement of the pressing member by the stopper is released.
5. The aforementioned drive mechanism is A motor for a pressing member that generates a first driving force for moving the pressing member, A media transport device according to any one of claims 1 to 3, comprising a motor for a restricting member that generates a second driving force for moving the restricting member.
6. The media conveying device according to any one of claims 1 to 5, wherein the conveying roller has a D-cut shape.
7. The system includes a feeding roller for sequentially feeding a medium placed on a platform from the bottom, a regulating member which is provided to move vertically before the start of medium feeding by a separation roller positioned above the feeding roller and opposite to the feeding roller, and which pushes the medium placed on the platform from below to restrict contact with the feeding roller, a pressing member which is provided to move vertically and which presses the medium placed on the platform from above, and a drive mechanism for driving the regulating member, the pressing member and the conveying roller to rotate a conveying roller positioned upstream of the feeding roller and the separation roller in the medium conveying direction on the platform, thereby causing the medium placed on the platform to vibrate. In the control described above, the transport roller is rotated when the restricting member and the pressing member are lowered, and the transport roller is stopped when the restricting member and the pressing member are raised . A media supply and delivery method characterized by the following:
8. A control program for a media transport device comprising: a mounting table; a feeding roller for sequentially feeding a medium placed on the mounting table from below; a separation roller positioned above the feeding roller and opposite to the feeding roller; a restricting member provided to be vertically movable and for pushing the medium placed on the mounting table from below to restrict contact with the feeding roller; a pressing member provided to be vertically movable and for pressing the medium placed on the mounting table from above; a transport roller positioned on the mounting table upstream of the feeding roller and the separation roller in the media transport direction; and a drive mechanism for driving the restricting member, the pressing member and the transport roller. Before the feeding of the medium by the feeding roller and the separation roller begins, the medium conveying device is instructed to control the drive mechanism to vibrate the medium placed on the aforementioned stand by moving the regulating member up and down, moving the pressing member up and down, and rotating the conveying roller. In the control described above, the transport roller is rotated when the restricting member and the pressing member are lowered, and the transport roller is stopped when the restricting member and the pressing member are raised . A control program characterized by the following features.

Description

This disclosure relates to a media transport device, a media feeding method, and a control program. In media transport devices such as scanners that sequentially feed and image multiple media while separating them, it is necessary to properly separate the media to prevent double feeding or jamming of media. A paper feeding device is disclosed that includes a roller guide located near the pick roller, which lifts the leading edge of the paper loaded onto the chute, thereby preventing contact between the paper and the pick roller (see Patent Document 1). In this paper feeding device, the roller guide moves up and down prior to the start of the paper feeding operation, causing vertical vibrations in the paper to be fed and aligning the leading edge of the paper. A conveying device is disclosed that includes a stopper member that can be displaced between a first position approaching the paper feed roller and a second position away from the paper feed roller (see Patent Document 2). When the stopper member is in the first position, this conveying device performs at least one of the following: control to generate vibration in the paper feed roller and control to generate vibration in the stopper member, if any of the multiple sensors detect a first state. Japanese Patent Publication No. 2004-269231Japanese Patent Publication No. 2016-113270 In media transport devices, it is necessary to align the leading edges of the media more effectively before feeding begins in order to properly separate the media. The media transport device, media feeding method, and control program according to this embodiment aim to better align the leading edges of the media before the start of media feeding. A media transport device according to one aspect of the embodiment includes a mounting table, a feed roller for sequentially feeding the media placed on the mounting table from below, a separation roller positioned above the feed roller and opposite to the feed roller, a restricting member provided to be vertically movable and pushing up the media placed on the mounting table from below to restrict contact with the feed roller, a pressing member provided to be vertically movable and pressing down on the media placed on the mounting table from above, a transport roller positioned on the mounting table upstream of the feed roller and separation roller in the media transport direction, a drive mechanism for driving the restricting member, the pressing member and the transport roller, and a control unit that controls the drive mechanism to vibrate the media placed on the mounting table by moving the restricting member up and down, moving the pressing member up and down and rotating the transport roller before the feed roller and separation roller start feeding the media, wherein the control unit rotates the transport roller when lowering the restricting member and the pressing member and stops the transport roller when raising the restricting member and the pressing member . A media feeding method according to one aspect of the embodiment includes a feeding roller for feeding media placed on a mounting table sequentially from the bottom, a regulating member provided to move vertically before the start of media feeding by a separation roller positioned above the feeding roller and opposite to the feeding roller, a pressing member provided to move vertically and presses the media placed on the mounting table from above, and a drive mechanism for driving the regulating member, pressing member and conveying roller to rotate a conveying roller positioned on the mounting table upstream of the feeding roller and separation roller in the media conveying direction, thereby vibrating the media placed on the mounting table. In the control, the conveying roller is rotated when the regulating member and pressing member are lowered, and the conveying roller is stopped when the regulating member and pressing member are raised . A control program relating to one aspect of the embodiment is a control program for a media transport device having a mounting table, a feeding roller for sequentially feeding a medium placed on the mounting table from below, a separation roller positioned above the feeding roller and opposite to the feeding roller, a restricting member provided to be vertically movable and pushing up the medium placed on the mounting table from below to restrict contact with the feeding roller, a pressing member provided to be vertically movable and pressing down on the medium placed on the mounting table from above, a transport roller positioned on the mounting table upstream of the feeding roller and the separation roller in the media transport direction, and a drive mechanism for driving the restricting member, the pressing member and the transport roller. The control program causes the media transport device to perform vertical movement of the restricting member, vertical movement of the pressing member and rotation of the transport roller,