Medium processing device and medium conveying method thereof
A media processing and media conveying technology, applied to printing devices, printing, etc., can solve problems such as unreliable elimination of skew, and achieve the effect of less reduction in throughput
Inactive Publication Date: 2016-10-05
SEIKO EPSON CORP
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Problems solved by technology
However, since the intermediate roller is a conveying roller that tracks and rotates when feeding the paper (medium) in reverse, it cannot reliably form a warp just by reverse feeding, and cannot reliably eliminate skew.
Method used
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[0024] Hereinafter, embodiments of a media processing device to which the present invention is applied will be described with reference to the drawings. Although the following embodiments apply the present invention to a printer, the present invention can also be applied to media processing devices other than printers such as scanners and facsimiles.
[0025] overall composition
[0026] figure 1 It is an external perspective view of an inkjet printer (hereinafter simply referred to as a "printer") according to this embodiment as seen from the front. The printer 1 (media processing device) as a whole has a rectangular parallelepiped printer body 2 that is long in the printer width direction X. As shown in FIG. A concave portion 4 is formed in the central portion of the rear surface of the printer main body portion 2, and the inverting unit 3 is attached thereto. The reversing unit 3 can be opened to the rear Y2 in the printer's front-rear direction Y around the lower end po...
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The invention provides a medium processing device and a medium transport method thereof. Throughput capacity is less reduced along with deflection elimination. A control part (5) of a printer (1) (a medium processing device) performs rotating driving for a middle roller (17) in a paper supplying path (12) and a paper sending roller (21a) in a horizontal transport path (13) so as to transport paper (P) in a first direction (FF) and perform deflection elimination action for the paper (P) before a head stretching action that the paper (P) is positioned in a printing position (A). In the deflection elimination action, the paper is sent in the forward direction in the first direction (FF) with a first speed (V1), so a front end (Pa) of the paper (P) reaches an overturn position (G) which is just away from the paper sending roller (21a) for alpha in the downstream side. Then, the transport direction of the paper (P) is switched to a second direction (BF) opposite to the first direction (FF) and the paper (P) is reversely sent for a distance of alpha + beta with a second speed (V2) lower than the first speed (V1). In this way, if the paper (P) bends, the front end (Pa) elastically contacts with the paper sending roller (21a) so that deflection can be eliminated.
Description
technical field [0001] The present invention relates to a medium processing device such as a printer, a scanner, etc., which transport sheet-like media such as recording paper along a transport path for printing or reading information, and a medium transport method thereof. Background technique [0002] Such a media processing device is provided with a transport path and a transport mechanism for transporting a sheet-shaped medium toward a media processing unit such as a print head. For example, a pick-up roller is brought into contact with paper (media) placed in a media storage unit such as a paper cassette, and the paper (media) is separated one by one by frictional force acting on the pick-up roller and supplied to the transport path. Then, paper (medium) is conveyed via intermediate rollers, paper feed rollers, and the like, and supplied to the media processing unit. Patent Document 1 discloses a medium processing device (printer) including such a transport mechanism. ...
Claims
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IPC IPC(8): B41J13/00
Inventor 一宫祐太增渊浩幸
Owner SEIKO EPSON CORP