Printer
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.
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.