Title:
FIXING ROLLER CORE, METHOD AND APPARATUS FOR MANUFACTURING THE SAME
Document Type and Number:
Japanese Patent JP2002293557
Kind Code:
A
Abstract:
To provide a fixing roller hard to be broken by the pressure applied in a fixing treatment, for which a glass tube as a roller core is manufactured without occurring latent defects.
This method for manufacturing a fixing roller core is characterized in that the outer peripheral surface of the glass tube composed of borosilicate glass, formed in pipe-shape and cut in a prescribed length, is heated at a temperature of slow cooling point of the borosilicate glass or higher to make the surface semi-melt state and then cooled gradually.
Inventors:
FUMA HIROSHI
HAMADA SHUTA
ONODERA MASAYASU
HAMADA SHUTA
ONODERA MASAYASU
Application Number:
JP2001105664A
Publication Date:
October 09, 2002
Filing Date:
April 04, 2001
Export Citation:
Assignee:
KONISHIROKU PHOTO IND
International Classes:
G03G15/20; C03B23/045; C03B25/02; F16C13/00; (IPC1-7): C03B25/02; F16C13/00; G03G15/20