LAMP UNIT AND IMAGE READER USING THE SAME

Title:

LAMP UNIT AND IMAGE READER USING THE SAME

Document Type and Number:

WIPO Patent Application WO/1997/016845

Kind Code:

A1

Abstract:

A lamp unit which is used as the light source of an image reader. The lowering of the light quantity with time is small. The lamp unit is provided with a cylindrical gas-filled tube, a pair of electrodes which are fixed to the outer surface of the gas-filled tube, extend in the length direction of the tube and face to each other, an electrically insulating covering tube which covers the electrodes and the gas-filled tube, and a heat accumulating member which is in contact with the outer surface of the covering tube and extends in the length direction of the covering tube.

Inventors:

TADENUMA HIRONOBU (JP)
OHARA TOSHIMITSU (JP)
HIGUCHI KENJI (JP)

Application Number:

PCT/JP1996/003146

Publication Date:

May 09, 1997

Filing Date:

October 28, 1996

Export Citation:

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Assignee:

SEIKO EPSON CORP (JP)
TADENUMA HIRONOBU (JP)
OHARA TOSHIMITSU (JP)
HIGUCHI KENJI (JP)

International Classes:

G03B27/54; H01J61/35; H01J61/52; H01J61/70; H01J65/00; H01J65/04; H04N1/028; H04N1/04; (IPC1-7): H01J61/52; H04N1/04

Foreign References:

JPH06118517A	1994-04-28
JPS6421960U	1989-02-03
JPH07123213A	1995-05-12
JPS62195847A	1987-08-28
JPH07123214A	1995-05-12

Other References: