Sheet feeding apparatus and print apparatus

Patent metadata

Field	Value
Publication number	US-10059131-B2
Application number	US-201514702963-A
Country	US
Kind code	B2
Filing date	May 4, 2015
Priority date	May 15, 2014
Publication date	Aug 28, 2018
Grant date	Aug 28, 2018

Abstract

A sheet feeding apparatus is provided which restrains a borne rolled sheet from being deflected to allow the sheet to be reliably fed. The sheet feeding apparatus includes a holder configured to hold the rolled sheet so as to be rotated; and a rotator configured to bear an outer periphery of the rolled sheet held by the holder from below in a direction of gravity, the rotator rotating with the rolled sheet while feeding.

First claim

What is claimed is:

1. A print apparatus comprising:
a holder configured to hold a rolled sheet that is a continuous sheet wound into a roll;
a print head configured to print on the rolled sheet supplied from the holder;
a driving unit configured to rotate the rolled sheet held by the holder and supply the rolled sheet to the print head;
a rotator configured to contact with an outer periphery of the rolled sheet held by the holder and to rotate in conjunction with the rolled sheet; and
a moving unit configured to move the rotator between a first position where the rotator is in contact with the outer periphery of the rolled sheet and a second position where the rotator is separate from the outer periphery of the rolled sheet.

2. The print apparatus according to claim 1 , wherein spools are attached to respective opposite ends of the rolled sheet and rotatably held by the holder, and the driving unit applies a rotational driving force to at least one of the spools.

3. The print apparatus according to claim 1 , wherein the rotator includes a first rotator and a second rotator arranged separately from each other in a direction in which the rolled sheet is fed.

4. The print apparatus according to claim 1 , wherein a plurality of the rotators are arranged along a sheet width direction of the rolled sheet.

5. The print apparatus according to claim 1 , wherein the moving unit moves the rotator to contact with the outer periphery of the rolled sheet when the rolled sheet is fed, the moving unit moves the rotator to separate from the outer periphery of the rolled sheet when a positional deviation of the sheet is corrected, and the moving unit moves the rotator to contact with the outer periphery of the rolled sheet again after position deviation correction is complete.

6. The print apparatus according to claim 1 , wherein the moving unit adjusts a force with which the rotator comes into contact with the outer periphery of the rolled sheet to assist bearing of a weight of the rolled sheet.

7. The print apparatus according to claim 6 , wherein the moving unit changes the force in accordance with at least one of a characteristic of the rolled sheet used, a size of the rolled sheet, and an environmental condition.

8. The print apparatus according to claim 6 , wherein the moving unit includes an arm, a rotator holder configured to hold the rotator at an end of the arm via an elastic member and a second driving unit configured to pivot the arm, and the moving unit pivots the arm by the second driving unit to adjust a force with which the rotator is separated from the outer periphery of the rolled sheet and the force with which the rotator comes into contact with the outer periphery of the rolled sheet.

9. The print apparatus according to claim 1 , further comprising a first supply unit and a second supply unit each comprising the holder and the rotator for sheet feed.

Assignees

• Canon Kk

Inventors

• Sumioka Masaki
• Yamaguchi Toshiaki
• Kobayashi Ryo

Classifications

• B41J11/04

  Roller platens · CPC title

• B65H2801/36

  Plotting · CPC title

• B65H16/08

  parallel rollers type · CPC title

• B65H16/106

  in which power is applied to web roll · CPC title

• B65H2301/41376

  arranged in a non-stationary manner, i.e. changing according to actual roll diameter · CPC title