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1. (WO1979000793) IGNITTING MEANS FOR DISCHARGE LAMP OF REPRODUCER
Latest bibliographic data on file with the International Bureau   

Pub. No.: WO/1979/000793 International Application No.: PCT/JP1979/000066
Publication Date: 18.10.1979 International Filing Date: 16.03.1979
IPC:
G03B 27/54 (2006.01) ,G03G 15/04 (2006.01) ,H05B 41/04 (2006.01)
G PHYSICS
03
PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
B
APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
27
Photographic printing apparatus
32
Projection printing apparatus, e.g. enlarger, copying camera
52
Details
54
Lamp housings; Illuminating means
G PHYSICS
03
PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
G
ELECTROGRAPHY; ELECTROPHOTOGRAPHY; MAGNETOGRAPHY
15
Apparatus for electrographic processes using a charge pattern
04
for exposing, i.e. imagewise exposure by optically projecting the original image on a photoconductive recording material
H ELECTRICITY
05
ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
B
ELECTRIC HEATING; ELECTRIC LIGHTING NOT OTHERWISE PROVIDED FOR
41
Circuit arrangements or apparatus for igniting or operating discharge lamps
02
Details
04
Starting switches
Applicants:
Inventors:
Priority Data:
78/3148618.03.1978JP
Title (EN) IGNITTING MEANS FOR DISCHARGE LAMP OF REPRODUCER
(FR) DISPOSITIF D"ALLUMAGE D"UNE LAMPE A DECHARGE D"UN APPAREIL A REPRODUIRE
Abstract:
(EN) An ignitting means for a discharge lamp of a reproducer, e.g. for a discharge lamp of an electrostatic reproducer of the type in which a moving light source incrementally illuminates an object to be reproduced and the reflected ray from the object is electrostatically recorded on a rotary drum. In this ignitting means, a lamp current supplied to the discharge lamp has a substantially rectangular wave form to thereby eliminate or reduce the substantially unilluminating period in light-output wave form of the discharging lamp. According to this invention, copies of high quality may be obtained in, particularly, the above-mentioned type of reproducer in which the illumination is in a moment.
(FR) Dispositif d"allumage pour une lampe a decharge d"un appareil a reproduire, par exemple une lampe a decharge d"un copieur electrostatique du type ou une source de lumiere mobile illumine par increments un objet a reproduire, le rayon reflechi par l"objet etant enregistre electrostatiquement sur un cylindre rotatif. Dans ce dispositif d"allumage, le courant d"alimentation de la lampe a decharge a une onde substantiellement rectangulaire pour ainsi eliminer ou reduire la periode de non-illumination en forme d"onde d"emission lumineuse de la lampe a decharge. Selon cette invention, des copies de haute qualite peuvent etre obtenues, en particulier, avec le type d"appareil susmentionne dans lequel l"illumination est instantanee.
Designated States:
Publication Language: Japanese (JA)
Filing Language: Japanese (JA)