Panasonic El Works : Commercializes "Thermoelectric Cooling Roller" Equipped with Thermoelectric Devices

Panasonic commercialized 'Thermoelectric Cooling Roller' equipped with thermoelectric devices contributing to space-saving, maintenance-saving for cooling systems of commercial use printers.

Osaka, Japan - Panasonic Corporation announced today that it has developed Thermoelectric Cooling Roller[1]' equipped with thermoelectric devices[2] and the mass production commences in July 2016. Without using any water, the industry first thermoelectric cooling roller does not need arranged pipes to circulate water, making cooling system[3] itself compact. The thermoelectric system also reduces time and cost on maintenances, for the periodical water exchange and cleaning are not necessary.

For two-sided printing with commercial use printers, after printing on one side of the sheet, the water cooling type roller is generally used for cooling the heated dry paper in order to continue back printing. For water cooling system, spaces are necessary for waste water disposal as periodical water exchange and for arranged pipes, and moreover the water leakage may happen. By using the new roller built in with thermoelectric elements of increased density per unit area, the excellent cooling capability and quick thermal response are achieved, and hence the thermoelectric cooling roller without using any water is commercialized.

Besides commercial use printers, the product can be used for temperature-controlled conveyance devices which need temperature control process by rollers, machines tools, as well as food processing machines, rubber processing machines, and medical related machines such as high precision temperature-controlled units etc.

This new product has the following features:

1. Industry first thermoelectric device cooling roller without using any water.
   This technology has made compact cooling system and solved
   the limitation of space for commercial printing machine.
   - Installation space: reduction by around 40% (No need of cooling chiller[4] and arranged pipes for water cooling system)
2. No need for periodical exchange of water and cleaning for roller, contributing to significant reduction of maintenance time and cost.
   - Maintenacne time: aroud 30 minutes (several days for water cooling type )
3. Significant reduction of start-up and shut-down time for cooling by quick response with thermoelectric devices
   - Cooling time is reduced to 1/6.
   (water cooling type: around 30 minutes → This product: around 5 minutes)

Notes:

• 1: As a thermoelectric roller for commercial use printers as of June 24, 2016 (Panasonic data)
• 2: The cooling type generally adopted for commercial use printers currently.

[1] Thermoelectric Cooling RollerThe roller, equipped with several pieces of thermoelectric devices inside, is able to move the heat outside the roller to the inside for cooling the roller surface.[2] Thermoelectric deviceAs thermoelectric elements, P type and N type have opposing characteristics which are arranged at positions alternately. When the electric current is applied on the device, the heat of one side moves to the opposite side, thus one side gets cold and the opposite side gets hot.[3] Cooling systemThe cooling devices used for cooling the heated dry paper after printing one side as two-sided printing, in order to continue back printing.[4] Cooling chillerThe water cooling device circulates water as a medium for cooling.