EP 0797238 B1 20011017 - Light-screening film paint for lamps, and light-screening film for lamps and producing method thereof
Title (en)
Light-screening film paint for lamps, and light-screening film for lamps and producing method thereof
Title (de)
Lichtabschirmender Anstrichmittel für Lampen, lichtabschirmender Film für Lampen und deren Herstellungsverfahren
Title (fr)
Peinture opaque à la lumière pour lampes, film opaque à la lumière pour lampes et leur procédé de fabrication
Publication
Application
Priority
- JP 6236696 A 19960319
- JP 30540596 A 19961118
Abstract (en)
[origin: EP0797238A2] In the case of a highly luminous discharge lamp for automobiles, since a temperature rise to about 700 DEG C in the glass surface of a lamp during the lighting will lead to an exposure of the light-screening film 4 formed thereon also to a temperature of 700 DEG C, the temperature of the glass surface of a lamp rises and accordingly that of the light-screening film 4 formed thereon also rises. Especially with a highly luminous discharge lamp for automobiles, the temperature of the glass surface of the lamp rises to about 700 DEG C during the lighting and necessarily the light-screening film on the glass surface is also exposed to a temperature of 700 DEG C, a light-screening film material free of occurrence of discoloration or peeling even after exposure to a temperature of 700 DEG C has been desired. It is the object of the present invention to prepare a light-screening film paint for lamps comprising: at least one compound of either manganese oxide or iron oxide containing 5 mol% to 30 mol% of manganese; and powder glass containing at least one of compounds respectively of silica, zinc oxide, boron oxide and aluminum oxide, and moreover to produce a light-screening film by applying the above paint to the surface of a lamp, followed by the firing at a temperature of not higher than 1,200 DEG C. <IMAGE>
IPC 1-7
IPC 8 full level
H01J 9/20 (2006.01); H01J 61/35 (2006.01)
CPC (source: EP)
H01J 9/20 (2013.01); H01J 61/35 (2013.01)
Designated contracting state (EPC)
DE FR GB NL
DOCDB simple family (publication)
EP 0797238 A2 19970924; EP 0797238 A3 19971210; EP 0797238 B1 20011017; CN 1101433 C 20030212; CN 1163292 A 19971029; DE 69707332 D1 20011122; DE 69707332 T2 20020502
DOCDB simple family (application)
EP 97104628 A 19970318; CN 97103081 A 19970319; DE 69707332 T 19970318