Drying device and printing apparatus

Patent metadata

Field	Value
Publication number	US-10300712-B2
Application number	US-201715641634-A
Country	US
Kind code	B2
Filing date	Jul 5, 2017
Priority date	Jul 8, 2016
Publication date	May 28, 2019
Grant date	May 28, 2019

Abstract

A drying device includes a heater, a supporter, a controller, and a temperature detector. The heater heats a medium. The supporter is disposed opposite the heater to support the medium. The controller turns on the heater while the medium is conveyed, and turns off the heater when the medium is stopped. The temperature detector detects a temperature of the supporter. The controller is connected to the temperature detector to turn off the heater when the temperature detected with the temperature detector is a predetermined temperature or higher.

First claim

What is claimed is:

1. A drying device, comprising:
a heater to heat a medium;
a supporter disposed opposite the medium from the heater to support the medium;
a controller to turn on the heater while the medium is conveyed and to turn off the heater when the medium is stopped; and
a temperature detector to detect a temperature of the supporter,
wherein the controller is connected to the temperature detector to turn off the heater when the temperature detected with the temperature detector is a predetermined temperature or higher.

2. The drying device according to claim 1 ,
wherein the supporter is a roller.

3. The drying device according to claim 2 ,
wherein the roller is a hollow roller, and
wherein the temperature detector is disposed inside the hollow roller.

4. The drying device according to claim 3 ,
wherein the temperature detector detects a temperature of an inner surface of the hollow roller facing the heater.

5. The drying device according to claim 1 ,
wherein the heater is an infrared heater, and
wherein the temperature detector is disposed on an opposite side of the supporter from the infrared heater.

6. The drying device according to claim 1 , further comprising a contact heating member disposed downstream from the heater in a direction of conveyance of the medium, to contact and heat the medium,
wherein each of the supporter and the temperature detector is disposed at a position higher than the contact heating member, and
wherein a detecting portion of the temperature detector is directed to a side opposite a side at which the contact heating member is disposed.

7. The drying device according to claim 1 , further comprising a plurality of contact heating members disposed downstream from the heater in a direction of conveyance of the medium, to contact and heat the medium,
wherein a conveyance path of the medium includes:
a first conveyance path on which the medium is conveyed while contacting at least one contact heating member of the plurality of contact heating members; and
a second conveyance path on which the medium is conveyed while contacting the at least one contact heating member again.

8. The drying device according to claim 1 , further comprising a plurality of contact heating members disposed downstream from the heater in a direction of conveyance of the medium, to contact and heat the medium,
wherein the plurality of contact heating members includes:
a first contact heating member having a curved contact face to contact the medium; and
a second contact heating member disposed downstream from the first contact heating member in the direction of conveyance of the medium, the second contact heating member having a curved contact face to contact the medium,
wherein a contact distance at which the contact face of the second contact heating member contacts the medium is longer than a contact distance at which the contact face of the first contact heating member contacts the medium.

9. A printing apparatus comprising:
a liquid applicator to apply liquid onto the medium; and
the drying device according to claim 1 , to dry the medium applied with the liquid.

10. The drying device of claim 1 , wherein the supporter does not include a heater to heat the medium.

11. A drying device, comprising:
a heater to heat a medium;
a supporter disposed opposite the medium from the heater to support the medium;
a controller to turn on the heater while the medium is conveyed and to turn off the heater when the medium is stopped; and
a cut-off switch connected to the controller to cut off power supply to the heater when a temperature of the supporter is a predetermined temperature or higher.

12. A printing apparatus comprising:
a liquid applicator to apply liquid onto the medium; and
the drying device according to claim 11 , to dry the medium applied with the liquid.

Assignees

• Sakamoto Wataru
• Onodera Ken
• Yoshinuma Toshihiro
• Ricoh Co Ltd

Inventors

• Sakamoto Wataru
• Onodera Ken
• Yoshinuma Toshihiro

Classifications

• B41J11/002 Primary

  Curing or drying the ink on the copy materials, e.g. by heating or irradiating · CPC title

• B41J2/0454

  involving calculation of temperature · CPC title

• B41J11/00212 Primary

  Controlling the irradiation means, e.g. image-based controlling of the irradiation zone or control of the duration or intensity of the irradiation · CPC title

• B41J11/00242

  Controlling the temperature of the conduction means · CPC title

• B41J11/00216

  using infrared [IR] radiation or microwaves · CPC title