US3292485A - Photographic printing machine for at least two different sizes of negative and positive - Google Patents

Photographic printing machine for at least two different sizes of negative and positive Download PDF

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Publication number
US3292485A
US3292485A US350365A US35036564A US3292485A US 3292485 A US3292485 A US 3292485A US 350365 A US350365 A US 350365A US 35036564 A US35036564 A US 35036564A US 3292485 A US3292485 A US 3292485A
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United States
Prior art keywords
negative
size
positive
contacts
printing machine
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Expired - Lifetime
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US350365A
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English (en)
Inventor
Mey Hansjuerg
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Gretag AG
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Gretag AG
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    • 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
    • G03B27/00—Photographic printing apparatus
    • G03B27/32—Projection printing apparatus, e.g. enlarger, copying camera
    • G03B27/46—Projection printing apparatus, e.g. enlarger, copying camera for automatic sequential copying of different originals, e.g. enlargers, roll film printers
    • G03B27/462—Projection printing apparatus, e.g. enlarger, copying camera for automatic sequential copying of different originals, e.g. enlargers, roll film printers in enlargers, e.g. roll film printers
    • 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
    • G03B27/00—Photographic printing apparatus
    • G03B27/32—Projection printing apparatus, e.g. enlarger, copying camera
    • G03B27/34—Means for automatic focusing therefor
    • G03B27/36—Means for automatic focusing therefor by mechanical connections, e.g. by cam, by linkage
    • G03B27/40—Means for automatic focusing therefor by mechanical connections, e.g. by cam, by linkage adapted for use with lenses of different focal length

Definitions

  • This invention relates to a photographic printing machine for at least two different sizes of negative and positive, wherein the source of projection light illuminates through a preferably adjustable condenser optical system the negative plane, which is equipped with adjustable masks, or the mask field adjusted at any given moment, while each of the negative mask shapes can optionally be reproduced in the printing plane, which is likewise equipped with adjustable masks, by means of interchangeable lenses or by means of a single lens with optionally adjustable distances between negative plane, lens, and printing plane, and wherein the positive mask field ad'- justed at any given moment lies in the path of printing material which is in the form of a strip and which is inserted into a transport device adapted to be driven by a motor and having a movement step length which can be adjusted at will.
  • Proposed printing machines of this type are in most cases so extensively automated that only a few manipulations are required to print a picture. Complications occur however when sizes have to be changed. This may relate to the change of the negative size and/or to a change of the desired positive size, that is to say of the size of the print.
  • a photographic printing machine having a plurality of components defining an optical reproducing system for the production of a photographic positive from a photographic negative, each component being selectable in accordance with the size of positive and negative chosen, a control device for the reception of information regarding the actual components selected and information regarding the components desired to be selected, an electrical circuit for comparing information regarding the actual components and information regarding the desired components, and a safety device actuated by the control device upon an actual component being different from a desired component.
  • control device may have a parallel group of primary contacts each of which is responsive to information received from a particular actual component, and a parallel group of secondary contacts, each of which is 3,292,485 Patented Dec. 20, 1966 responsive to information received for a particular desired component and is in series with an appropriate primary contact, the arrangement being such that the pri mary contacts break a contact only upon information received in respect of an actual component selected whilst the secondary contacts make a contact only upon information received in respect of a desired component, thus allowing the electrical circuit to be completed only when an actual component is different from a desired component.
  • the desired secondary contacts can simultaneously be selected by a negative-positive size combination switch.
  • the preselection of the desired negative-positive size combinations is preferably effected on a keying apparatus.
  • the combinations of actual contacts and of desired contacts belonging to a particular adjustment are connected through a signal lamp to a source of electricity; this permits the immediate location of any faulty adjustment which may occur.
  • relays may be connected in parallel to the signal lamps; these relays may be replaced by a single relay if the individual switch circuits are decoupled by suitable means, such as diodes.
  • each adjustment is made by means of a servo motor, the exciter winding of which is connected in the corresponding adjustment circuit of the signal and/or interlocking device.
  • Each adjustment is thereby automatically varied until its actual value coincides with the desired value, since only then is the supply of current to the exciter winding of the servo motor terminated.
  • the invention can be applied to all photographic printing machines of the specified type.
  • FIGURE 1 shows a simplified diagrammatic representation in perspective of a photographic printing machine having a safety device constructed according to the inv ntion;
  • FIGURE 2 a block diagram serving to explain a safety device of the invention more fully
  • FIGURE 3 a detailed wiring diagram of another embodiment of safety device.
  • light 2 emitted by a light source 1 is beamed by one of two condenser optical systems 3a or 3b and projected through a negative, held in a suitable negative holder 4a, 4b, or 4c, by way of an objective 5a, 5b or 5c and a corresponding positive mask 6a, 612, or 6c on to a strip 7 of printing material.
  • the condenser optical systems, negative masks, objectives, and positive masks are respectively mounted on click stop discs 3, 4, 5 and 6 and can each at choice be swung into the path of the printing beam.
  • a shaft 12a rotates to advance and take up the strip 7 of printing material.
  • the rotational positions of the discs are scanned by means of switch elements in binary form, each of these switch elements being adapted to be operated by a respective shaft 8a, 911, 10a, and 11a which are mounted on their respective discs so as to rotate therewith.
  • the aforesaid switch elements are accommodated in boxes 8, 9, 10, and 11, and consists of a cam disc and a number of electrical switch contacts corresponding to the number of possible positions of the disc.
  • a box 12 on the shaft 12a also contains switch elements which are associated with box 11. The conditions of the individual switch contacts constitute actual values.
  • FIGURE 2 in which values are for example designated b, (open) and 3, (closed)
  • actual Values u, ar, ar 41 and [-17, 2 1: ar, 41 pp y the switch elements contained in boxes 8, 9, 10, and 11 are compared by means of gates 17a to 17d with the desired values a 11 61 a and a a (1 a respectively. If there should be a discrepancy between an actual value and a desired value, the gates 17a to 17d cause signal lamps 18a to 18d to light up and at the same time through an OR-gate 19 bring about a variation of the condition of a relay 20, through the make contact 21 of which the interlocking device can be operated.
  • the Wiring diagram of the embodiment illustrated in FIGURE 3, is suitable for three possible size combinations, for example 24x36 mm. on 9x13 cm., 36x24 mm. on 9x6 cm., and 6x6 cm. on 9x9 cm. These three different enlargement sizes require three different focal lengths for the lens if a constant distance is assumed between the negative plane and the printing or paper plane. It will be assumed that a total of two condenser positions are sutficient for the optimum illumination of the negative planes.
  • switch 34 (size 6x6 cm.), 35 (size 24x36 mm.) and 36 (size 36x24 mm.) are coupled to the negative masks
  • switch 37 (focal length f 38 (focal length f and 39 (focal length f are coupled to the objective disc
  • switch 40 position k of the condenser
  • 41 position k of the condenser
  • the desired size combination is adjusted on one of the three keys 42, 43,, or 44.
  • Each of these keys operates a group of contacts 42a42d, 43a43d, and 44a44d respectively.
  • the contacts (44a--44d) appertaining to the key (44) depressed at the time in question are closed, while the other contacts remain open.
  • the paper size and transport adjustment had been incorrectly set at 9x6 cm. instead of 9x9 cm., that is to say if the switch 33 were opened and the switches 31 and 32 closed (see switch positions shown in broken lines in FIGURE 3), the circuit battery 54-contact 32-contact 44a-lamp 45-battery would be closed. At the same time current would also flow in the parallel circuit battery 54-diode 50-relay 49. The lamp 45 then signals an incorrect adjustment of the paper size and transport setting.
  • the attracted relay 49 can be used to prevent the printing process.
  • the procedure is similar with the contacts 34, 35, and 36, associated with the negative mask, in combination with the size combination contacts 42b, 43b, and 44b, with the objective contacts 37, 38, and 39, and the size combination contacts 420, 43c, and 440, and also with the condenser contacts 40 and 41 and the size combination contacts 42d, 43d, and 44d. If any of these adjustments is incorrect, a corresponding lamp 46, 47, or 48 lights up.
  • the same relay 49 always responds simultaneously with one (or more) of the lamps 45-48, this relay being connected through the diodes 5tl53, and interrupts the printing operation. Only the adjustment which has been notified as incorrect by the lighting up of one of the signal lamps 4548 need then be corrected in order to enable the printing operation to be carried out.
  • FIGURE 3 works in accordance with the open circuit principle. It is however also completely possible to work on the closed circuit principle. For this purpose it is essentially merely necessary for the switching conditions of the contacts 31 to 41 and 42a-d, and 44a-d, associated with the individual adjustment positions, to be reversed, and for the circuit arrangement of the signalling and/ or interlocking device to be adapted accordingly.
  • the battery 54 is advantageously replaced by the main supply of the photographic printing machine.
  • a photographic printing machine a light source, an optical condenser system, a multi-size negative masking means, an adjustable lens system, a multi-size positive masking means, a print material transport device, the multi-size positive masking means being arranged to define an image produced by the light source, the optical condenser system and the adjustable lens system from a negative held in the multi-size negative masking means, each component being selectable from a number of alternative elements in accordance with the size of positive and negative chosen, a control device for the reception of information regarding the actual components selected and information regarding the components desired to be selected, said control device having a parallel group of primary contacts each of whichis responsive to information received from a particular actual component, and a parallel group of secondary contacts, each of which is responsive to information received for a particular desired component and is in series with an appropriate primary contact, the arrangement having means breaking one of the primary contacts only upon information received in respect of an actual component selected whilst the secondary contacts make a contact only upon information received in respect of a desired component, and means completing an
  • servo-motors for setting the optical condenser system, the multi-size negative masking means, the adjustable lens system and the multi-size positive masking means, wherein the exciter windings of said motors are respectively connected in the electrical circuits of the control device.

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Projection-Type Copiers In General (AREA)
US350365A 1963-03-13 1964-03-09 Photographic printing machine for at least two different sizes of negative and positive Expired - Lifetime US3292485A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CH318463A CH406846A (de) 1963-03-13 1963-03-13 Photographisches Kopiergerät für mindestens zwei verschiedene Negativ- und Positivformate

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US3292485A true US3292485A (en) 1966-12-20

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CH (1) CH406846A (de)
GB (1) GB1060425A (de)

Cited By (18)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3488119A (en) * 1966-11-28 1970-01-06 Eastman Kodak Co Photographic printer operations responsive to a negative mask
US3524705A (en) * 1966-12-02 1970-08-18 Ciba Ltd Projecting apparatus for copiers
US3689149A (en) * 1970-11-12 1972-09-05 Drewry Photocolor Corp Photographic printing apparatus having variable length print paper
US3693516A (en) * 1969-11-20 1972-09-26 Graphic Systems Inc Photocomposing machine with flexible fiber optics scanning member
DE2238972A1 (de) * 1971-08-09 1973-02-22 Minolta Camera Kk Fotografischer vergroesserungsapparat
DE2500813A1 (de) 1974-01-11 1975-07-17 Canon Kk Kopiervorrichtung
WO1980000379A1 (en) * 1978-08-07 1980-03-06 Eastman Kodak Co Apparatus for positioning a photographic image
US4203664A (en) * 1978-08-07 1980-05-20 Eastman Kodak Company Film positioning apparatus
US4204733A (en) * 1978-08-07 1980-05-27 Eastman Kodak Company Film positioning apparatus
EP0026016A1 (de) * 1979-09-25 1981-04-01 Océ-Nederland B.V. Reprographische Kamera
US4302101A (en) * 1977-03-11 1981-11-24 Pako Corporation Paper feed system for photographic printer
US4443100A (en) * 1982-05-14 1984-04-17 Design Controls Corporation Indexing apparatus for positioning and retaining a disk film
US4737825A (en) * 1986-11-14 1988-04-12 Davis Robert C Printer with traversing lens and printing method
US4853751A (en) * 1987-11-30 1989-08-01 Eastman Kodak Company Disc film and lens supporting unit
US4857964A (en) * 1987-08-14 1989-08-15 Eastman Kodak Company Apparatus for printing customized photographic prints
US4931826A (en) * 1988-12-01 1990-06-05 Castle Rock Manufacturing, Inc. Photographic printer-processor
US5045877A (en) * 1990-02-21 1991-09-03 Orren J. Lucht Photographic printer
US5099277A (en) * 1988-12-01 1992-03-24 Orren J. Lucht Vacuum platen for use in a printer

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3106880A (en) * 1954-03-26 1963-10-15 Mergenthaler Linotype Gmbh Typographical photocomposing machine

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3106880A (en) * 1954-03-26 1963-10-15 Mergenthaler Linotype Gmbh Typographical photocomposing machine

Cited By (21)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3488119A (en) * 1966-11-28 1970-01-06 Eastman Kodak Co Photographic printer operations responsive to a negative mask
US3524705A (en) * 1966-12-02 1970-08-18 Ciba Ltd Projecting apparatus for copiers
US3693516A (en) * 1969-11-20 1972-09-26 Graphic Systems Inc Photocomposing machine with flexible fiber optics scanning member
US3689149A (en) * 1970-11-12 1972-09-05 Drewry Photocolor Corp Photographic printing apparatus having variable length print paper
DE2238972A1 (de) * 1971-08-09 1973-02-22 Minolta Camera Kk Fotografischer vergroesserungsapparat
US3779642A (en) * 1971-08-09 1973-12-18 Minolta Camera Kk Variable magnification copier machine
DE2560416C2 (de) * 1974-01-11 1986-01-30 Canon K.K., Tokio/Tokyo Kopiergerät
DE2500813A1 (de) 1974-01-11 1975-07-17 Canon Kk Kopiervorrichtung
US4302101A (en) * 1977-03-11 1981-11-24 Pako Corporation Paper feed system for photographic printer
WO1980000379A1 (en) * 1978-08-07 1980-03-06 Eastman Kodak Co Apparatus for positioning a photographic image
US4203664A (en) * 1978-08-07 1980-05-20 Eastman Kodak Company Film positioning apparatus
US4204733A (en) * 1978-08-07 1980-05-27 Eastman Kodak Company Film positioning apparatus
EP0026016A1 (de) * 1979-09-25 1981-04-01 Océ-Nederland B.V. Reprographische Kamera
DK156928B (da) * 1979-09-25 1989-10-16 Oce Helioprint As Reproduktionskamera
US4443100A (en) * 1982-05-14 1984-04-17 Design Controls Corporation Indexing apparatus for positioning and retaining a disk film
US4737825A (en) * 1986-11-14 1988-04-12 Davis Robert C Printer with traversing lens and printing method
US4857964A (en) * 1987-08-14 1989-08-15 Eastman Kodak Company Apparatus for printing customized photographic prints
US4853751A (en) * 1987-11-30 1989-08-01 Eastman Kodak Company Disc film and lens supporting unit
US4931826A (en) * 1988-12-01 1990-06-05 Castle Rock Manufacturing, Inc. Photographic printer-processor
US5099277A (en) * 1988-12-01 1992-03-24 Orren J. Lucht Vacuum platen for use in a printer
US5045877A (en) * 1990-02-21 1991-09-03 Orren J. Lucht Photographic printer

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GB1060425A (en) 1967-03-01
CH406846A (de) 1966-01-31

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