Sheet material cooling device and printer including the same

Patent metadata

Field	Value
Publication number	US-2016159122-A1
Application number	US-201514945423-A
Country	US
Kind code	A1
Filing date	Nov 18, 2015
Priority date	Dec 9, 2014
Publication date	Jun 9, 2016
Grant date	—

Abstract

A sheet material cooling device includes a cylindrical body having an outer circumferential surface to be in contact with a sheet material, a cooling unit having a cooling surface in contact with an inner circumferential surface of the cylindrical body, and, a first fastening member inserted from an outside of the cylindrical body toward an inside to attach the cooling unit to the cylindrical body in a state that the cooling surface is in contact with the inner circumferential surface.

First claim

What is claimed is:

1 . A sheet material cooling device comprising:
a cylindrical body having an. outer circumferential surface to be in contact with a sheet material; a cooling unit having a cooling surface in contact with an inner circumferential surface of the cylindrical body; and a first fastening member inserted from an outside of the cylindrical body toward an inside to attach the cooling unit to the cylindrical body in a state that the cooling surface is in contact with the inner circumferential surface.

2 . The sheet material cooling device according to claim 1 , wherein
a conveyance area for conveying the sheet material is defined in the outer circumferential surface of the cylindrical body, and a first insertion hole for receiving the first fastening member is formed in an area of the outer circumferential surface of the cylindrical body other than the conveyance area.

3 . The sheet material cooling device according to claim 1 , wherein the cooling unit includes:
a thermoelectric conversion unit having the cooling surface curved in a circular arc shape capable of contacting the inner circumferential surface of the cylindrical body, and a support body attached to the cylindrical body to support the thermoelectric conversion unit in a state that the thermoelectric conversion unit is sandwiched between the support body and the inner circumferential surface.

4 . The sheet material cooling device according to claim 3 , wherein the thermoelectric conversion unit is supported by the support body in a manner that the thermoelectric conversion unit is movable in a direction crossing a radial direction of the cylindrical body in a state that the cooling surface is in contact with the inner circumferential surface.

5 . The sheet material cooling device according to claim 4 , wherein the thermoelectric conversion unit is attached to the support body by a second fastening member in a manner that the movable range is limitable.

6 . The sheet material coo device according to claim 5 , wherein
the thermoelectric conversion unit includes a second insertion hole having a diameter larger than a diameter of the second fastening member to allow insertion of the second fastening member through the second insertion hole, and the second fastening member is an assembly screw that includes a screw portion screwed into the support body, a shaft portion having a diameter larger than a diameter of the screw portion and smaller than the diameter of the second insertion hole, and a head portion having a diameter larger than the diameter of the second insertion hole.

7 . The sheet material cooling device according to claimer 3 , wherein the thermoelectric conversion unit includes a thermoelectric conversion module supported by the support body, and a cooling plate laminated on the thermoelectric conversion module and having the cooling surface.

8 . The sheet material cooling device according to claim 1 , wherein
the cooling surface has a flat shape, and the inner circumferential surface of the cylindrical body includes a flat area in contact with at least the cooling surface.

9 . The sheet material cooling device according to claim 3 , wherein the support body is formed of a heat sink.

10 . The sheet material cooling device according to claim 9 , wherein
a plurality of the heat sinks are arranged in a circumferential direction of the inner circumferential surface, and a spacer extending in an axial direction of the cylindrical body interposed between the heat sinks adjacent to each other.

11 . The sheet material cooling device according to claim 9 , wherein
the heat sink includes radiation fins extending toward a shaft center of the cylindrical body, and the radiation fins form a V shape tapered toward the shaft center as viewed in the axial direction of the cylindrical body.

12 . The sheet material cooling device according to claim 3 , further comprising:
a center shaft positioned at a shaft center of the cylindrical body; a support shaft of which first end is connected with the center shaft, and a second end thereof is connected with the support body; and an urging unit wound around the support shaft to urge the support body against the inner circumferential surface of the cylindrical body.

13 . A printer that performs printing on a front surface and a rear surface of a sheet material, the printer comprising:
a front surface printing device that performs printing on the front surface of the sheet material, a heating device that heats and dries the sheet material, and a rear surface printing device that performs printing on the rear surface of the sheet material, wherein; the front surface printing device, the heating device, and the rear surface printing device are disposed in this order on a conveyance path for conveying the sheet material; and the sheet material cooling device according to claim 1 is disposed on the conveyance path between the heating device and the rear surface printing device.

Assignees

• Panasonic Ip Man Co Ltd

Inventors

• Nishio Tetsuya
• Shingai Takafumi
• Nakao Katsushi
• Okuzono Eiji

Classifications

• B41F23/0479

  using chill rolls · CPC title

• B41J29/377 Primary

  Cooling or ventilating arrangements · CPC title

• B41J11/0015

  for treating before, during or after printing or for uniform coating or laminating the copy material before or after printing (selective coating B41J2/2114) · CPC title