Browse Prior Art Database

Regulation of Humidity in Memory Devices

IP.com Disclosure Number: IPCOM000036530D
Original Publication Date: 1989-Oct-01
Included in the Prior Art Database: 2005-Jan-29
Document File: 2 page(s) / 30K

Publishing Venue

IBM

Related People

Franco, LP: AUTHOR [+3]

Abstract

Humidity regulations in a restricted environment, such as a metal film memory file, can be accomplished by using a saturated salt contained in a device which allows regulation without contamination.

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Regulation of Humidity in Memory Devices

Humidity regulations in a restricted environment, such as a metal film memory file, can be accomplished by using a saturated salt contained in a device which allows regulation without contamination.

Memory files have a "breather" hole through which filtered air is allowed to exchange back and forth. A constant humidity is not possible in such an environment. Control of humidity in the laboratory using salt solutions is well known [*]; however, the technique applied in a memory file is not.

The regulation of humidity in the memory file is done by containing a saturated salt in a holding cell which does not corrode and is permeable. One conception of such a device is shown in the figure. Sufficient salt (A) chosen to provide a specific humidity is put in water (B) to cause saturation. Excess water can be used to allow regulation in dry environments. The saturated salt is contained in a non-corroding material (C), such as TEFLON*. A porous filter (D) of sufficient size to allow water vapor to transfer back and forth, but not liquid or salt, is essential. The filter should also be non- corroding. A device can be designed which can operate independent of orientation of the file (E). * Trademark of E. I. du Pont de Nemours & Co.

Reference: J. F. Young, "Control in the Laboratory Using Salt Solutions-A Review," J. Appl. Chem. 17, 241-245 (September 1967).

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