GB1474494A - Switching devices - Google Patents

Switching devices

Info

Publication number
GB1474494A
GB1474494A GB1001375A GB1001375A GB1474494A GB 1474494 A GB1474494 A GB 1474494A GB 1001375 A GB1001375 A GB 1001375A GB 1001375 A GB1001375 A GB 1001375A GB 1474494 A GB1474494 A GB 1474494A
Authority
GB
United Kingdom
Prior art keywords
flash
sequence
lamps
switching device
lamp
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.)
Expired
Application number
GB1001375A
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.)
General Electric Co
Original Assignee
General Electric Co
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 General Electric Co filed Critical General Electric Co
Publication of GB1474494A publication Critical patent/GB1474494A/en
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03B—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
    • G03B15/00—Special procedures for taking photographs; Apparatus therefor
    • G03B15/02—Illuminating scene
    • G03B15/03—Combinations of cameras with lighting apparatus; Flash units
    • G03B15/04—Combinations of cameras with non-electronic flash apparatus; Non-electronic flash units
    • G03B15/0452—Electrical ignition means connected to the shutter
    • G03B15/0457—Ignition mechanisms for sequential ignition of flash lamps
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
    • C08K3/00—Use of inorganic substances as compounding ingredients
    • C08K3/18—Oxygen-containing compounds, e.g. metal carbonyls
    • C08K3/24—Acids; Salts thereof
    • C08K3/26—Carbonates; Bicarbonates
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
    • C08K5/00—Use of organic ingredients
    • C08K5/04—Oxygen-containing compounds
    • C08K5/09—Carboxylic acids; Metal salts thereof; Anhydrides thereof
    • C08K5/098—Metal salts of carboxylic acids
    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03B—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
    • G03B15/00—Special procedures for taking photographs; Apparatus therefor
    • G03B15/02—Illuminating scene
    • G03B15/03—Combinations of cameras with lighting apparatus; Flash units
    • G03B15/04—Combinations of cameras with non-electronic flash apparatus; Non-electronic flash units
    • G03B15/041—Separatable flash apparatus; Means for mounting the flash apparatus on the photographic apparatus
    • G03B15/0426—Mounting means comprising longitudinal slide and incorporated contacts (for multiple lamps)
    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03B—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
    • G03B15/00—Special procedures for taking photographs; Apparatus therefor
    • G03B15/02—Illuminating scene
    • G03B15/03—Combinations of cameras with lighting apparatus; Flash units
    • G03B15/04—Combinations of cameras with non-electronic flash apparatus; Non-electronic flash units
    • G03B15/0442—Constructional details of the flash apparatus; Arrangement of lamps, reflectors, or the like
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
    • H05K1/00—Printed circuits
    • H05K1/02—Details
    • H05K1/0286—Programmable, customizable or modifiable circuits
    • H05K1/0293—Individual printed conductors which are adapted for modification, e.g. fusable or breakable conductors, printed switches
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
    • H05K2201/00—Indexing scheme relating to printed circuits covered by H05K1/00
    • H05K2201/01—Dielectrics
    • H05K2201/0104—Properties and characteristics in general
    • H05K2201/0112—Absorbing light, e.g. dielectric layer with carbon filler for laser processing
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
    • H05K2203/00—Indexing scheme relating to apparatus or processes for manufacturing printed circuits covered by H05K3/00
    • H05K2203/17—Post-manufacturing processes
    • H05K2203/173—Adding connections between adjacent pads or conductors, e.g. for modifying or repairing

Abstract

1474494 Multiple photo-flash unit GENERAL ELECTRIC CO 11 March 1975 [15 April 1974] 10013/75 Heading G2X [Also in Division H1] A multiple photo-flash unit comprises a plurality of flash-lamps 22-25, 27-30 in a common mounting, each lamp having its own reflector 22'-25', 27'-30', and the lamps being connected, by means of a printed circuit board, so as to fire individually in sequence, there being immediately adjacent each lamp, except for the final one in the firing sequence, a radiation sensitive switching device 63 which is switched permanently from a highly resistive state to a conductive state by the absorption of heat radiation from the flash. This causes the next lamp in the sequence to be brought into the circuit preparatory to the next flash. Fig. 3 shows how a switching device 63 is mounted beneath a window in the reflector 23'. Each switching device 63 is composed of a carboncontaining silver salt dispersed in a humidityresistant organic polymer binder (see Division H1). Fig. 2 (not shown) illustrates a printed circuit board lay-out which arranges the eight flash-lamps in two sequences of four, each sequence having a corresponding terminal tab 18,18' Fig. 1 for mounting on a camera.
GB1001375A 1974-04-15 1975-03-11 Switching devices Expired GB1474494A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US46080174A 1974-04-15 1974-04-15

Publications (1)

Publication Number Publication Date
GB1474494A true GB1474494A (en) 1977-05-25

Family

ID=23830133

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1001375A Expired GB1474494A (en) 1974-04-15 1975-03-11 Switching devices

Country Status (9)

Country Link
JP (1) JPS5331777B2 (en)
AR (1) AR219896A1 (en)
BE (1) BE827697A (en)
BR (1) BR7502310A (en)
CA (1) CA1050745A (en)
FR (1) FR2267566B1 (en)
GB (1) GB1474494A (en)
IT (1) IT1037260B (en)
NL (1) NL7504431A (en)

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CA1090410A (en) * 1976-05-10 1980-11-25 Jan Van Werkhoven Photographic flashlamp unit
US4087233A (en) * 1976-10-18 1978-05-02 Gte Sylvania Incorporated Radiation switch for photoflash unit
CA1189043A (en) * 1981-03-16 1985-06-18 John W. Shaffer Multilamp photoflash array
JPH06105346B2 (en) 1986-11-07 1994-12-21 富士写真フイルム株式会社 Processing method of silver halide color photographic light-sensitive material
JPH04445A (en) 1990-04-17 1992-01-06 Fuji Photo Film Co Ltd Processing method for silver halide color photosensitive material
DE69127130T2 (en) 1990-05-09 1997-12-11 Fuji Photo Film Co Ltd Photographic processing composition and processing method using the same
JP3372994B2 (en) 1993-06-11 2003-02-04 富士写真フイルム株式会社 Processing method of silver halide color photographic light-sensitive material
US5534395A (en) 1994-06-09 1996-07-09 Fuji Photo Film Co., Ltd. Method of processing silver halide color photographic materials

Also Published As

Publication number Publication date
DE2506501B2 (en) 1976-09-23
FR2267566A1 (en) 1975-11-07
NL7504431A (en) 1975-10-17
JPS50137726A (en) 1975-11-01
CA1050745A (en) 1979-03-20
JPS5331777B2 (en) 1978-09-05
BR7502310A (en) 1976-02-17
AR219896A1 (en) 1980-09-30
DE2506501A1 (en) 1975-10-23
FR2267566B1 (en) 1977-07-08
BE827697A (en) 1975-10-08
IT1037260B (en) 1979-11-10

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Legal Events

Date Code Title Description
PS Patent sealed
PCNP Patent ceased through non-payment of renewal fee