Browse Prior Art Database

IR Lamp Modified for Vertical Burn

IP.com Disclosure Number: IPCOM000061677D
Original Publication Date: 1986-Sep-01
Included in the Prior Art Database: 2005-Mar-09
Document File: 2 page(s) / 32K

Publishing Venue

IBM

Related People

Bleau, CD: AUTHOR [+4]

Abstract

This article describes an infrared (IR) lamp modified for vertical burn. The glass of the lamp is dimpled to retain the supports in their desired position, thereby eliminating support shifting and stretching of filament and distortion. In diskette manufacturing equipment a vertical burning lamp is used to thermally set the side folds of diskettes. Focal point band variations after an IR lamp heats up during use can cause the energy level to drop and result in inadequate thermal setting of diskette cartridge folds. The arrangement disclosed herein eliminates this effect. When small IR lamps are rated for horizontal burn, only the filament is supported, as shown in Fig. 1. An application can require that the lamp to be used in a vertical position.

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IR Lamp Modified for Vertical Burn

This article describes an infrared (IR) lamp modified for vertical burn. The glass of the lamp is dimpled to retain the supports in their desired position, thereby eliminating support shifting and stretching of filament and distortion. In diskette manufacturing equipment a vertical burning lamp is used to thermally set the side folds of diskettes. Focal point band variations after an IR lamp heats up during use can cause the energy level to drop and result in inadequate thermal setting of diskette cartridge folds. The arrangement disclosed herein eliminates this effect. When small IR lamps are rated for horizontal burn, only the filament is supported, as shown in Fig. 1. An application can require that the lamp to be used in a vertical position. As the lamp heats during use, the glass expands and the supports slip and shift position, as shown in Fig. 2. This causes the filament to stretch at the top and distort at the lower section of the lamp. As a result, the focal point band changes and a loss of energy is experienced, as illustrated in Fig. 3. In order to prevent this, the glass of the lamp is dimpled to retain the supports in their original position, thus eliminating support shifting and stretching of the filament and distortion. Fig. 4 illustrates the structure of the present arrangement.

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