Patent Number: 6,299,497

Title: Method of manufacturing an electron source and image-forming apparatus using the electron source

Abstract: A sodium-containing glass substrate has a modified surface on which an electroconductive film is to be formed. The modified surface is constituted of a layer of which sodium concentration is lower than the bulk body of the glass substrate, preferably with a sodium content ratio to all the metal elements of not greater than 2 atomic percent. The modified surface may contain a reduced amount of sulfur as compared to the bulk body of the glass substrate.

Inventors: Nishimura; Michiyo (Sagamihara, JP), Kawade; Hisaaki (Yokohama, JP), Miyazaki; Kazuya (Atsugi, JP)

Assignee: Canon Kabushiki Kaisha

International Classification: C03C 21/00 (20060101); C03C 17/06 (20060101); H01J 1/30 (20060101); H01J 1/316 (20060101); H01J 009/00 (); H01J 009/24 ()

Expiration Date: 10/09/2018