Printer

Patent metadata

Field	Value
Publication number	US-11046095-B2
Application number	US-201916595699-A
Country	US
Kind code	B2
Filing date	Oct 8, 2019
Priority date	Dec 21, 2018
Publication date	Jun 29, 2021
Grant date	Jun 29, 2021

Abstract

In accordance with an embodiment, a printer comprises a housing section configured to accommodate a roll body obtained by winding an elongated image receiving medium in a roll shape; a conveyance section configured to pull out the image receiving medium from the roll body to convey it; a printing section configured to perform printing on the image receiving medium pulled out of the roll body by the conveyance section; and a buffer device arranged at the bottom of the housing section on an upstream side of the conveyance section along a direction in which the image receiving medium is pulled out by the conveyance direction so as to apply a pressing force in a direction towards the roll body to the image receiving medium pulled out of the roll body.

First claim

What is claimed is:

1. A printer, comprising:
a housing section configured to accommodate a roll body obtained by winding an image receiving medium in a roll shape; a conveyance section configured to pull the image receiving medium from the roll body to convey the image receiving medium in a conveyance direction;
a printing section configured to print on the image receiving medium pulled from the roll body by the conveyance section; and
a buffer device arranged at a bottom of the housing section on an upstream side of the conveyance section along a direction in which the image receiving medium is pulled in the conveyance direction so as to apply a pressing force to the image receiving medium pulled from the roll body in a direction towards the roll body,
wherein the buffer device comprises a pressing member that presses the image receiving medium, and is arranged at a position at which the pressing member is pressed against the roll body with a maximum diameter,
wherein the buffer device comprises a first damper including a first swinging member provided at the bottom of the housing section configured to swing around a first pivot shaft, and a first energization member for energizing the first swinging member towards the roll body; and a second damper including a second swinging member configured to swing around a second pivot shaft with respect to the first swinging member and provided with the pressing member at a swinging tip thereof, and a second energization member for energizing the second swinging member towards the roll body,
wherein the first energization member is a tension spring stretched between the first swinging member and the bottom of the housing section, and wherein the second energization member is a compression spring provided in a compressed state between the first swinging member and the second swinging member.

2. The printer according to claim 1 , wherein a housing of the housing section includes a regulating member that regulates a pivotable range of the first swinging member.

3. The printer according to claim 1 , wherein the housing comprises a bottom wall positioned on a rear side and having a substantially arcuate shape that curves from a rear side end of an opening towards a front side end thereof.

4. The printer according to claim 3 , wherein a curvature radius of the bottom wall is greater than a curvature radius of the roll body having a maximum diameter.

5. The printer according to claim 3 , wherein the bottom wall has a size in a width direction that is greater than a width in an axial direction of the roll body.

6. The printer according to claim 1 , wherein the buffer device is configured to apply a braking force to the roll body to brake a rotation of the roll body for a predetermined period until a diameter of the roll body reaches a certain diameter from a start of use of the roll body having a maximum diameter.

7. The printer according to claim 1 , wherein the buffer device is configured to apply a pressing force in a direction towards the roll body to the image receiving medium between the roll body and a platen roller to change a conveyance path of the image receiving medium, and further configured to apply tension to the image receiving medium.

Assignees

• Toshiba Tec Kk

Inventors

• Wong John Huang Ung
• Eoka Kenji
• Loh Yun Reng

Classifications

• B65H26/04

  for variation in tension · CPC title

• B41J11/04 Primary

  Roller platens · CPC title

• B41J3/4075

  Tape printers; Label printers · CPC title

• B65H23/26 Primary

  by transverse stationary or adjustable bars or rollers · CPC title

• B41J15/165 Primary

  for tensioning continuous copy material by use of redirecting rollers or redirecting nonrevolving guides · CPC title