EP0342607A3 - Color image input unit having a rare gas cathode discharge tube - Google Patents

Color image input unit having a rare gas cathode discharge tube Download PDF

Info

Publication number
EP0342607A3
EP0342607A3 EP19890108780 EP89108780A EP0342607A3 EP 0342607 A3 EP0342607 A3 EP 0342607A3 EP 19890108780 EP19890108780 EP 19890108780 EP 89108780 A EP89108780 A EP 89108780A EP 0342607 A3 EP0342607 A3 EP 0342607A3
Authority
EP
European Patent Office
Prior art keywords
discharge tube
rare gas
cathode discharge
input unit
color image
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP19890108780
Other languages
German (de)
French (fr)
Other versions
EP0342607A2 (en
EP0342607B1 (en
Inventor
Shuichi Ichinose
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Seiko Epson Corp
Original Assignee
Seiko Epson Corp
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Seiko Epson Corp filed Critical Seiko Epson Corp
Publication of EP0342607A2 publication Critical patent/EP0342607A2/en
Publication of EP0342607A3 publication Critical patent/EP0342607A3/en
Application granted granted Critical
Publication of EP0342607B1 publication Critical patent/EP0342607B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J61/00—Gas-discharge or vapour-discharge lamps
    • H01J61/02—Details
    • H01J61/54—Igniting arrangements, e.g. promoting ionisation for starting
    • H01J61/541—Igniting arrangements, e.g. promoting ionisation for starting using a bimetal switch
    • H01J61/544—Igniting arrangements, e.g. promoting ionisation for starting using a bimetal switch and an auxiliary electrode outside the vessel
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J61/00—Gas-discharge or vapour-discharge lamps
    • H01J61/02—Details
    • H01J61/56—One or more circuit elements structurally associated with the lamp

Landscapes

  • Facsimile Scanning Arrangements (AREA)

Abstract

A rare gas cold cathode discharge tube (1) is provided with a conductive member (15) nearby a main electrode (13-a), allowing to stabilize the quantity of emitted light even when an intermittent lighting with a period of several mil­ liseconds is carried out. The use of such rare gas cold cathode discharge tube as lighting apparatus allows an ima­ ge input unit to be realized which is moderate in cost and less space-consuming, still ensuring a color correction function to enhance the color reproducibility of a printing output of the read image and a light adjusting function of the lighting apparatus to enhance the S/N ratio of the read image.
EP89108780A 1988-05-16 1989-05-16 Color image input unit having a rare gas cathode discharge tube Expired - Lifetime EP0342607B1 (en)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
JP118704/88 1988-05-16
JP11870488 1988-05-16
JP65029/89 1989-03-17
JP1065029A JPH0249345A (en) 1988-05-16 1989-03-17 Rare gas cooled cathodic discharge tube and image input device

Publications (3)

Publication Number Publication Date
EP0342607A2 EP0342607A2 (en) 1989-11-23
EP0342607A3 true EP0342607A3 (en) 1991-04-03
EP0342607B1 EP0342607B1 (en) 1995-08-02

Family

ID=26406170

Family Applications (1)

Application Number Title Priority Date Filing Date
EP89108780A Expired - Lifetime EP0342607B1 (en) 1988-05-16 1989-05-16 Color image input unit having a rare gas cathode discharge tube

Country Status (4)

Country Link
EP (1) EP0342607B1 (en)
JP (1) JPH0249345A (en)
DE (1) DE68923651T2 (en)
HK (1) HK5297A (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP3307357B2 (en) * 1999-02-15 2002-07-24 日本電気株式会社 Scanner device and control method thereof
CN103177930A (en) * 2013-04-01 2013-06-26 海宁市新光源照明有限责任公司 Long-life energy-saving fluorescent lamp

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0165550A2 (en) * 1984-06-15 1985-12-27 Sharp Kabushiki Kaisha Color image reading apparatus
DE3718216A1 (en) * 1986-05-30 1987-12-03 Toshiba Kawasaki Kk NON-GAS DISCHARGE LAMP ARRANGEMENT

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5244081A (en) * 1975-10-03 1977-04-06 Hitachi Ltd High-voltage sodium vapor discharge lamp
JPS57121367A (en) * 1981-01-20 1982-07-28 Canon Inc Method for reading color original
JPS57164658A (en) * 1981-04-01 1982-10-09 Mitsubishi Electric Corp Original reader
JPS5980059A (en) * 1982-10-29 1984-05-09 Minolta Camera Co Ltd Multi-color original reader
JPS62203466A (en) * 1986-03-03 1987-09-08 Fuji Xerox Co Ltd Original reader
JPS62281256A (en) * 1986-05-30 1987-12-07 Toshiba Corp Rare gas discharge lamp device
JP2600709B2 (en) * 1987-09-08 1997-04-16 セイコーエプソン株式会社 Rare gas cold cathode lamp for manuscript reader

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0165550A2 (en) * 1984-06-15 1985-12-27 Sharp Kabushiki Kaisha Color image reading apparatus
DE3718216A1 (en) * 1986-05-30 1987-12-03 Toshiba Kawasaki Kk NON-GAS DISCHARGE LAMP ARRANGEMENT

Non-Patent Citations (2)

* Cited by examiner, † Cited by third party
Title
PATENT ABSTRACTS OF JAPAN, vol. 1, no. 105 (M-77), 16th September 1977; & JP-A-52 044 081 (HITACHI) (06-04-1977) *
PATENT ABSTRACTS OF JAPAN, vol. 13, no. 280, (E-779)[3628] 27th June 1989; & JP-A-1 067 858 (SEIKO EPSON) (14-03-1989) *

Also Published As

Publication number Publication date
DE68923651T2 (en) 1996-02-22
EP0342607A2 (en) 1989-11-23
HK5297A (en) 1997-01-17
EP0342607B1 (en) 1995-08-02
DE68923651D1 (en) 1995-09-07
JPH0249345A (en) 1990-02-19

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