GB1240910A - Replenishment apparatus for photographic processor - Google Patents

Replenishment apparatus for photographic processor

Info

Publication number
GB1240910A
GB1240910A GB25358/69A GB2535869A GB1240910A GB 1240910 A GB1240910 A GB 1240910A GB 25358/69 A GB25358/69 A GB 25358/69A GB 2535869 A GB2535869 A GB 2535869A GB 1240910 A GB1240910 A GB 1240910A
Authority
GB
United Kingdom
Prior art keywords
photo
film
amplifier
developer
circuit
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
GB25358/69A
Inventor
Thomas W Frutiger
Ellsworth J Mccune
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.)
Eastman Kodak Co
Original Assignee
Eastman Kodak 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 Eastman Kodak Co filed Critical Eastman Kodak Co
Publication of GB1240910A publication Critical patent/GB1240910A/en
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03D—APPARATUS FOR PROCESSING EXPOSED PHOTOGRAPHIC MATERIALS; ACCESSORIES THEREFOR
    • G03D3/00—Liquid processing apparatus involving immersion; Washing apparatus involving immersion
    • G03D3/02—Details of liquid circulation
    • G03D3/06—Liquid supply; Liquid circulation outside tanks
    • G03D3/065—Liquid supply; Liquid circulation outside tanks replenishment or recovery apparatus
    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03D—APPARATUS FOR PROCESSING EXPOSED PHOTOGRAPHIC MATERIALS; ACCESSORIES THEREFOR
    • G03D13/00—Processing apparatus or accessories therefor, not covered by groups G11B3/00 - G11B11/00
    • G03D13/007—Processing control, e.g. test strip, timing devices

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Photographic Processing Devices Using Wet Methods (AREA)

Abstract

1,240,910. Photo-electric control of film processing. EASTMAN KODAK CO. May 19, 1969 [May 23, 1968], No. 25358/69. Heading G1A. [Also in Divisions G2 and G3] In a photographic film processor, the transparency of the developed and fixed film is monitored photo-electrically to provide an electrical signal which is integrated and used to control replenishment of the developer and fixer solutions when the integrated signal becomes greater than a certain value. The film F is passed through tanks for the developer 24, fixer 26 and washing liquid 28, water removal section 30, and drier column 32 before passing through the photo-electric monitoring apparatus 38. Here, a lamp 58 illuminates the film, whose degree of development, or density, is monitored by first photo-cell 66, Fig.3, while the lamp intensity variations are compensated for by the use of second photo-cell 68 which receives light direct from the lamp via light guide 70. The control circuit, Fig. 3, includes a differential amplifier 76, receiving the output of the two cells 66, 68 which are shown as photo-voltaic selenium cells, but photo-conductive or photoemissive cells could be used. Calibration of this part of the circuit is performed using meter 80. With a clear piece of film, tap 74 is adjusted to give minimum deflection. With a completely black piece, the amplifier 76 gain is altered by resistor 78 to give maximum deflection. The amplifier output is integrated by amplifier 84 in association with capacitor 86. When the charge builds up so that comparator 88 produces an output, transistor 96 is triggered to conduct and relay 106 is actuated. This causes (via contacts 110, 112) discharge of capacitor 86, thereby initiating a new integration process, and (via contacts 114, 116) energization of stepping motor coil 120, which motor steps on one step (stepping may alternatively be effected by use of a flip-flop circuit). The stepping motor carries a cam such that after a predetermined number of these integration processes and thus motor steps, a contact 130 is closed in the circuit of relay 134, which when energized causes timers 46, 48 to be actuated. These control pumping of developer and fixer into the respective chambers 24, 26 via flowmeters.
GB25358/69A 1968-05-23 1969-05-19 Replenishment apparatus for photographic processor Expired GB1240910A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US73148868A 1968-05-23 1968-05-23

Publications (1)

Publication Number Publication Date
GB1240910A true GB1240910A (en) 1971-07-28

Family

ID=24939715

Family Applications (1)

Application Number Title Priority Date Filing Date
GB25358/69A Expired GB1240910A (en) 1968-05-23 1969-05-19 Replenishment apparatus for photographic processor

Country Status (4)

Country Link
US (1) US3561344A (en)
CA (1) CA927169A (en)
DE (1) DE1926297C3 (en)
GB (1) GB1240910A (en)

Families Citing this family (27)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3712203A (en) * 1969-11-15 1973-01-23 Iwatsu Electric Co Ltd Automatic control device for the toner concentration within a developer in an electrostatic copy machine
US3696728A (en) * 1969-12-19 1972-10-10 Stephen F Hope Film processor
US3787689A (en) * 1972-05-16 1974-01-22 Hope H X Ray Products Inc Exposure scanner and replenisher control
US3822723A (en) * 1972-09-11 1974-07-09 Du Pont Apparatus for controlling addition of replenishment solution to a photographic processor
USRE30123E (en) * 1972-09-11 1979-10-23 E. I. Du Pont De Nemours And Company Apparatus for controlling addition of replenishment solution to a photographic processor
JPS5346092B2 (en) * 1973-03-07 1978-12-11
JPS5153827A (en) * 1974-11-07 1976-05-12 Dainippon Screen Mfg SHASHINSHORISOCHOSUPUREESHIKIROORAARATSUKU
GB1471018A (en) * 1974-09-24 1977-04-21 Rank Xerox Ltd Electrostatic copying machines
US4057818A (en) * 1975-06-25 1977-11-08 Pako Corporation Automatic replenisher system for a photographic processor
US4057817A (en) * 1975-11-07 1977-11-08 Lok-A-Bin Systems, Inc. Film processor standby control system
US4119989A (en) * 1977-01-03 1978-10-10 Pitney-Bowes, Inc. System for controlling concentration of developer solution
US4104670A (en) * 1977-04-08 1978-08-01 Pako Corporation Automatic replenisher control
BR7805829A (en) * 1977-09-09 1979-04-24 H Huss DEVICE FOR REVEALING MOVEDIC ELEMENTS IN THE FORM OF TAPES OR SHEETS, WITH PHOTOSENSIVE LAYERS
USRE31484E (en) 1978-03-02 1984-01-03 Pako Corporation Anti-oxidation fluid replenisher control system for processor of photosensitive material
US4174169A (en) * 1978-03-02 1979-11-13 Pako Corporation Anti-oxidation fluid replenisher control system for processor of photosensitive material
JPS54128338A (en) * 1978-03-28 1979-10-04 Sumiyoshi Denki Kk Circuit for removing and correcting surplus of developing unit
US4198151A (en) * 1979-03-23 1980-04-15 Sumiyoshi Denki Kabushiki-Kaisha System for replenishing developer
JPS5595135U (en) * 1979-05-15 1980-07-02
US4293211A (en) * 1980-07-14 1981-10-06 Pako Corporation Automatic replenisher control system
US4295729A (en) * 1980-07-14 1981-10-20 Pako Corporation Automatic anti-oxidation replenisher control
US4314753A (en) * 1980-07-14 1982-02-09 Pako Corporation Automatic inverse fix replenisher control
US4346981A (en) * 1980-07-14 1982-08-31 Pako Corporation Dual rate automatic anti-oxidation replenisher control
US4372666A (en) * 1981-11-16 1983-02-08 Pako Corporation Automatic variable-quantity/variable-time anti-oxidation replenisher control system
US4372665A (en) * 1981-11-16 1983-02-08 Pako Corporation Automatic variable-quantity/fixed-time anti-oxidation replenisher control system
US4466072A (en) * 1981-11-16 1984-08-14 Pako Corporation Automatic fixed-quantity/fixed-time anti-oxidation replenisher control system
US4422152A (en) * 1981-11-19 1983-12-20 Pako Corporation Automatic fixed-quantity/variable-time anti-oxidation replenisher control system
US4603956A (en) * 1984-11-16 1986-08-05 Pako Corporation Film-width and transmittance scanner system

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2631511A (en) * 1948-06-26 1953-03-17 Kenyon Instr Company Inc Control for rapid film processing
US3388652A (en) * 1965-05-27 1968-06-18 Technical Operations Inc Photographic processing control

Also Published As

Publication number Publication date
DE1926297C3 (en) 1974-07-25
DE1926297A1 (en) 1970-01-02
DE1926297B2 (en) 1973-12-20
CA927169A (en) 1973-05-29
US3561344A (en) 1971-02-09

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