GB1439206A – Photometer
– Google Patents
GB1439206A – Photometer
– Google Patents
Photometer
Info
Publication number
GB1439206A
GB1439206A
GB4598673A
GB4598673A
GB1439206A
GB 1439206 A
GB1439206 A
GB 1439206A
GB 4598673 A
GB4598673 A
GB 4598673A
GB 4598673 A
GB4598673 A
GB 4598673A
GB 1439206 A
GB1439206 A
GB 1439206A
Authority
GB
United Kingdom
Prior art keywords
measuring
photometer
disposed
receiver
source
Prior art date
1972-10-05
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
GB4598673A
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.)
Hoechst AG
Original Assignee
Hoechst AG
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.)
1972-10-05
Filing date
1973-10-02
Publication date
1976-06-16
1973-10-02
Application filed by Hoechst AG
filed
Critical
Hoechst AG
1976-06-16
Publication of GB1439206A
publication
Critical
patent/GB1439206A/en
Status
Expired
legal-status
Critical
Current
Links
Espacenet
Global Dossier
Discuss
Classifications
G—PHYSICS
G01—MEASURING; TESTING
G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
G01N21/17—Systems in which incident light is modified in accordance with the properties of the material investigated
G01N21/25—Colour; Spectral properties, i.e. comparison of effect of material on the light at two or more different wavelengths or wavelength bands
G01N21/255—Details, e.g. use of specially adapted sources, lighting or optical systems
G—PHYSICS
G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
G03G—ELECTROGRAPHY; ELECTROPHOTOGRAPHY; MAGNETOGRAPHY
G03G15/00—Apparatus for electrographic processes using a charge pattern
G03G15/06—Apparatus for electrographic processes using a charge pattern for developing
G03G15/08—Apparatus for electrographic processes using a charge pattern for developing using a solid developer, e.g. powder developer
G03G15/0822—Arrangements for preparing, mixing, supplying or dispensing developer
G03G15/0848—Arrangements for testing or measuring developer properties or quality, e.g. charge, size, flowability
G03G15/0849—Detection or control means for the developer concentration
G03G15/0855—Detection or control means for the developer concentration the concentration being measured by optical means
G—PHYSICS
G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
G03G—ELECTROGRAPHY; ELECTROPHOTOGRAPHY; MAGNETOGRAPHY
G03G15/00—Apparatus for electrographic processes using a charge pattern
G03G15/06—Apparatus for electrographic processes using a charge pattern for developing
G03G15/08—Apparatus for electrographic processes using a charge pattern for developing using a solid developer, e.g. powder developer
G03G15/0822—Arrangements for preparing, mixing, supplying or dispensing developer
G03G15/0848—Arrangements for testing or measuring developer properties or quality, e.g. charge, size, flowability
G03G15/0856—Detection or control means for the developer level
G03G15/0862—Detection or control means for the developer level the level being measured by optical means
Abstract
1439206 Photo-electric photometer HOECHST AG 2 Oct 1973 [5 Oct 1972] 45986/73 Heading G1A A photometer for measuring toner concentration includes an incandescent bulb source 11, two cuvettes 3, 4 containing respectively a reference electro-photographic developer powder and a test developer powder and disposed at measuring stations 18, 17 and a photo-electric cell receiver 14; the source, receiver and measuring stations defining the apices of a tetrahedron and being inter-connected by bores 20, 21, 24, 25 in the aluminium casing block 2. In a preferred embodiment a rotatable paddle wheel 28 in a slot 27 in the block connects light tunnels 24 or 25 alternately between a respective measuring station 18 or 17 and the detector. The measuring stations and the bores are disposed so as to be mirror-symmetrical to the plane in which the centres of the source and the receiver are disposed and which is perpendicular to the straight line connecting the centres of the measuring stations. In an alternative embodiment Fig. 2 (not shown) a second slot (40) extending parallel to the block 27 is provided, by means of which a shutter blade (42) therein may be adjusted to equalize minor assymmetries introduced during manufacture. The photometer may be applied for measuring colours, the solids content of liquids, or for fluorescence incitation.
GB4598673A
1972-10-05
1973-10-02
Photometer
Expired
GB1439206A
(en)
Applications Claiming Priority (1)
Application Number
Priority Date
Filing Date
Title
DE2248781A
DE2248781C2
(en)
1972-10-05
1972-10-05
Alternating light photometer
Publications (1)
Publication Number
Publication Date
GB1439206A
true
GB1439206A
(en)
1976-06-16
Family
ID=5858209
Family Applications (1)
Application Number
Title
Priority Date
Filing Date
GB4598673A
Expired
GB1439206A
(en)
1972-10-05
1973-10-02
Photometer
Country Status (7)
Country
Link
US
(1)
US3877820A
(en)
JP
(1)
JPS4974083A
(en)
AU
(1)
AU471955B2
(en)
DE
(1)
DE2248781C2
(en)
FR
(1)
FR2202291B1
(en)
GB
(1)
GB1439206A
(en)
NL
(1)
NL163871C
(en)
Families Citing this family (1)
* Cited by examiner, † Cited by third party
Publication number
Priority date
Publication date
Assignee
Title
CN105136692B
(en)
*
2015-07-30
2018-02-09
苏州卫宁精密仪器设备有限公司
A kind of medical detection photometer
Family Cites Families (6)
* Cited by examiner, † Cited by third party
Publication number
Priority date
Publication date
Assignee
Title
US1999023A
(en)
*
1933-04-20
1935-04-23
Electrical Testing Lab
Photoelectric comparator
US2970513A
(en)
*
1957-03-25
1961-02-07
Mine Safety Appliances Co
Apparatus for analysis of materials
US3091690A
(en)
*
1960-06-16
1963-05-28
Barnes Eng Co
Two path infrared gas analyzer having one enclosed path
US3496370A
(en)
*
1966-05-16
1970-02-17
Advance Data Systems Corp
Bill validation device with transmission and color tests
US3506365A
(en)
*
1968-01-31
1970-04-14
Us Air Force
Bidirectional reflection attachment for a double beam spectrophotometer
JPS5423598B2
(en)
*
1972-03-18
1979-08-15
1972
1972-10-05
DE
DE2248781A
patent/DE2248781C2/en
not_active
Expired
1973
1973-09-25
NL
NL7313191.A
patent/NL163871C/en
not_active
IP Right Cessation
1973-10-02
GB
GB4598673A
patent/GB1439206A/en
not_active
Expired
1973-10-03
FR
FR7335347A
patent/FR2202291B1/fr
not_active
Expired
1973-10-04
JP
JP48111908A
patent/JPS4974083A/ja
active
Pending
1973-10-05
AU
AU61065/73A
patent/AU471955B2/en
not_active
Expired
1973-10-05
US
US403799A
patent/US3877820A/en
not_active
Expired – Lifetime
Also Published As
Publication number
Publication date
JPS4974083A
(en)
1974-07-17
AU6106573A
(en)
1975-04-10
FR2202291B1
(en)
1974-11-08
DE2248781B1
(en)
1974-01-03
NL163871C
(en)
1980-10-15
NL163871B
(en)
1980-05-16
NL7313191A
(en)
1974-04-09
FR2202291A1
(en)
1974-05-03
DE2248781A1
(en)
1974-01-03
DE2248781C2
(en)
1974-08-01
US3877820A
(en)
1975-04-15
AU471955B2
(en)
1976-05-06
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Legal Events
Date
Code
Title
Description
1976-10-27
PS
Patent sealed [section 19, patents act 1949]
1985-06-12
PCNP
Patent ceased through non-payment of renewal fee
