US3382520A - Automatic machine for the treatment of metal offset printing plates - Google Patents

Automatic machine for the treatment of metal offset printing plates Download PDF

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Publication number
US3382520A
US3382520A US555032A US55503266A US3382520A US 3382520 A US3382520 A US 3382520A US 555032 A US555032 A US 555032A US 55503266 A US55503266 A US 55503266A US 3382520 A US3382520 A US 3382520A
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United States
Prior art keywords
tanks
plates
tank
plate
machine
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Expired - Lifetime
Application number
US555032A
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English (en)
Inventor
Savart Bernard
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.)
Societe des Forges et Ateliers du Creusot
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Societe des Forges et Ateliers du Creusot
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    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03F—PHOTOMECHANICAL PRODUCTION OF TEXTURED OR PATTERNED SURFACES, e.g. FOR PRINTING, FOR PROCESSING OF SEMICONDUCTOR DEVICES; MATERIALS THEREFOR; ORIGINALS THEREFOR; APPARATUS SPECIALLY ADAPTED THEREFOR
    • G03F7/00—Photomechanical, e.g. photolithographic, production of textured or patterned surfaces, e.g. printing surfaces; Materials therefor, e.g. comprising photoresists; Apparatus specially adapted therefor
    • G03F7/26—Processing photosensitive materials; Apparatus therefor
    • G03F7/30—Imagewise removal using liquid means
    • G03F7/3085—Imagewise removal using liquid means from plates or webs transported vertically; from plates suspended or immersed vertically in the processing unit
    • C—CHEMISTRY; METALLURGY
    • C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
    • C23F—NON-MECHANICAL REMOVAL OF METALLIC MATERIAL FROM SURFACE; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL; MULTI-STEP PROCESSES FOR SURFACE TREATMENT OF METALLIC MATERIAL INVOLVING AT LEAST ONE PROCESS PROVIDED FOR IN CLASS C23 AND AT LEAST ONE PROCESS COVERED BY SUBCLASS C21D OR C22F OR CLASS C25
    • C23F1/00—Etching metallic material by chemical means
    • C23F1/08—Apparatus, e.g. for photomechanical printing surfaces
    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03F—PHOTOMECHANICAL PRODUCTION OF TEXTURED OR PATTERNED SURFACES, e.g. FOR PRINTING, FOR PROCESSING OF SEMICONDUCTOR DEVICES; MATERIALS THEREFOR; ORIGINALS THEREFOR; APPARATUS SPECIALLY ADAPTED THEREFOR
    • G03F7/00—Photomechanical, e.g. photolithographic, production of textured or patterned surfaces, e.g. printing surfaces; Materials therefor, e.g. comprising photoresists; Apparatus specially adapted therefor
    • G03F7/26—Processing photosensitive materials; Apparatus therefor
    • G03F7/30—Imagewise removal using liquid means
    • G03F7/3042—Imagewise removal using liquid means from printing plates transported horizontally through the processing stations

Definitions

  • This invention relates to an automatic machine for the treatment of metal otfset printing plates.
  • engraved metal plates wrapped around a cylinder receive ink and transfer it to the actual printing cylinder.
  • the plates may be engraved or etched by coating them with a photo-sensitive varnish which is exposed to light through a block representing the text or image for reproduction; the plates then undergo a number of treatments as follows:
  • the varnish which has not undergone any structural modification as a result of exposure to light is dissolved.
  • the plate is then etched by attacking the places exposed by development.
  • the plate is then brushed at least once to remove the varnish residues.
  • the plate then undergoes a final treatment, more particularly drying, to enable the plates to be used in a printing machine.
  • the object of the machine according to the invention is to enable the various operations required on a plurality of plates introduced into the machine to be carried out automatically at the highest possible speed, the succession of operations being compatible with the times required for each of the various operations and the times naturally differing according to the operations; to this end, for a given speed of introduction and removal of the plates, the machine according to the invention enables the retention times obtained in some of the treatment tanks to be multiples of the intervals of time separating the introductions of the plates into the machine.
  • the machine comprises in alignment and separated from one another by rinsing tanks; a plurality of treatment tanks such as a developing tank, an etching tank, at least one brushing tank and, if required, subsequent treatment tanks, each of the tanks being provided with abutment means for at least one fiat support for the transportation and suspension of a plate, the plates being taken, in use, through the machine from a feed station by a mechanism for periodic transfer of the plates between the tanks, said mechanism being connected firstly to means for delaying the plate transfers between some of the tanks and secondly to means. for horizontal transport of the plates to the interior of tanks intended to contain a plurality of plates simultaneously, said horizontal transports being carried out, in use, in
  • FIGURE 1 is a highly diagrammatic general view of the machine
  • FIGURE 2 is a partial view to an enlarged scale, showing a detail of FIGURE 1 and the arrangement of a plate brushing tank;
  • FIGURE 3 is a partial view to an enlarged scale, being a detail of FIGURE 1 and showing a device for delaying the engagement of the plates by the inter-tank transfer mechanism;
  • FIGURE 4 is a diagram showing the plate transfer cycle.
  • FIGURE 1 The machine shown in highly diagrammatic form in FIGURE 1 comprises successive tanks 1 to 9; tank 1 is intended for development, tank 3 for etching, tanks 5 and 7 for brushing and tank 9 for drying of the plates. Rinsing tanks 2, 4, 6 and 8 are disposed between said tanks.
  • the plates to be treated are mounted on fiat supports (not shown) and each has a rod 10, the two ends of which are intended to bear in notches at the top of the two side walls of each of the tanks.
  • Tank 1 has two notches 1a and 112; tank 3 has equidistant notches 3a 3n+l, the distance between the notches being d; the other tanks have just a single notch a.
  • the system consisting of the tanks 1 to 9 and of the various mechanisms carrying out the plate transfer, is supported by a common frame (not shown) in the form of two suitably strutted side frames.
  • the machine is fed with plates via an inclined surface 12a adapted to receive a plurality of suspension rods 10 for the plate supports 11.
  • a reel 121 provides successive transfer of the rods 10 to a retaining notch 12c formed in a stationary support 12.
  • the rods 10 are transferred between the retaining notch 12c and the notch 1a of tank 1 and from each of the tanks 18 to the next tank, by means of a mechanism which on each side of the machine comprises a bar 13 provided with notches 13a 13 and connected by two pivots 14a to two noria chains 14 each extending over two wheels 15.
  • the horizontal distance between the two vertical runs of each noria chain corresponds to a horizontal distance D by which the rods 10 are transferred by the bars 13; the movement transmitted to the bars 13 by the noria chains 14 rotating in the direction of arrow F lifts the plates vertically above the top edges of the tanks and then lowers them vertically to deposit them after a horizontal movement of amplitude D.
  • the movements of the noria chains 14 are intermittent.
  • the bottom noria wheels 15 are driven by chains 16 through the agency of a mechanism comprising a drum 17 with four arms 17a angularly solid with the chain pinions 16a of the chains 16.
  • the drum is mounted loosely on a shaft 18 driven through a reduction gear 19 by a chain 20 having a dog 21 intended to contact the arms 17a.
  • Drum 17 is thus driven over a fraction of a revolution, for example of a revolution, and remains stationary until the dog 21 next encounters an arm 17a of the drum 17.
  • the notches 13 and 13h of the bars 13 associated with the brushing tanks 5 and 7 are retractable so that they notches 13 and. 13h are locked in their operative position by a pawl 25 at an angle to the shaft 22. Periodic retraction of the notches 13 and 13h results in the plates being moved in the brushing tanks 5 and 7 only on every other upward movement of the bars 13.
  • FIG. 1 shows the active position of the notch 13 i.e., the position for the notch which will lift bar 10 of the plate in tank 5. During the upward movement of bar 13, pinion 23 will not mesh with rack 24 ⁇ and the notch 13 will lift the plate in tank 6 in the plane of the notch 13g of FIG. 1.
  • notch 13 Afterdeposit of the platein tank 6 by notch 13 pinion 23 is located in the plane of the rack 24 andwill rotate the notch 13f through 180. During the next upward movement of bar. 13, notch 13 is out of operative position and will not lift the plate suspended in. tank 5. This inoperative position of the notch is shown in FIG. 1
  • the transfers of amplitude d inside the tanks 1 and 3 are respectively carried out by means of movable combs 26 and 27 each connected at one end to an eccentric 28 and at the other endvia an articulated rod 29 to an eccentric 30.
  • the eccentrics 2 and 30 are driven continu ously and are connected together by chains 31, the movement being transmitted via a chain 32 from the shaft 18.
  • the combs 26 andl27 effect a transfer inside the tanks 1 and 3, the
  • the brushing tanks 5 and 7 are arrangedas shown to an enlarged scale in FIGURE 2. Each consists of a container in which rotary brushes 33 are disposed in one vertical plane, the brushes "being driven by two chains 34 from a shaft driven by a chain 36from the input shaft” to the reduction gear 19 (FIGURE 1). The brushes 33 are sprayed with a suitable solvent. i
  • rollers 37 which can also be in the form of brushes which may possibly be allocated for brushing asecond plate mounted on each of theflat transport supports.
  • the plate supports 11 undergo a vertical reciprocating movement over a distance substantially equal to the distance between two adjacent brushes-33so as to provide substantially uniform brushing over the entire surface of the plates.
  • the notches for retaining the plates in the brushing tanks 5 and 7 are associated with movable supports 38 or are replaced by such supports, each of which is mounted on a vertical rod 39 sliding in two stationary bearings40 and connected by a rod 41 to an eccentric 42 rotated by a chain-43 from the drivev shaft 35 for the brushes 33 (FIGURE 1).
  • FIGURE 4 shows the transfer times D from one tank to thenext, the transfer times d to the inside of some of the tanks, and the times A A and A during which the plates remain inside the tanks, for two complete cycles T and against equal time intervals z.
  • the continuous succession of operations is as follows:
  • A nT-t in etching tank 3, n being the number of plates provided in tank 3.
  • the machine will be completed by various pipelines for the flowof the treatment liquids, means for supplying and dissipating heat in some of the treat- I ment tanks, and so on.
  • An automatic machine for treatment of metal olfset printing'plates comprising in alignment an inclined support for a plurality of fiat plate supports, rinsing tanks, a plurality of treatment tanks including a developing tank, an etching tank, at least one brushing tank and subsequent treatment tanks, each of said tanks havingabutment means for at least one of said fiat plate supports, mechanism for periodically moving said plate supports through said tanks' from said inclined support, said mechanism including means for delaying said plate supports transfer between certain of said tanks and including means for simultaneous horizontal transport of 'said plate supports in the interior of said tanks containing a plurality of said plate supports, said horizontal transport means being actuated in time with the introduction of plate supports from said inclined support whereby the retention time of each plate support in said tanks is a multiple of the interval of time between the introduction of the plate supports from said inclined support, said mechanism including two horizontal transfer bars parallel withthe alignment of said tanks and notches on said bars, supports for said flat plate supports received in said notches, two noria chains for each of said bars, each of said
  • each of said brushing tanks containing a plurality of horizontal vertically disposed coplanar rotary brushes and means for reciprocating said plate supports in front of said brushes in amplitude equal to the distance between the axis of two adjacent ones of said brushes.

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  • Chemical & Material Sciences (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • General Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Photosensitive Polymer And Photoresist Processing (AREA)
US555032A 1965-06-10 1966-06-03 Automatic machine for the treatment of metal offset printing plates Expired - Lifetime US3382520A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR20252A FR1446456A (fr) 1965-06-10 1965-06-10 Machine automatique de traitement des plaques métalliques d'imprimerie offset

Publications (1)

Publication Number Publication Date
US3382520A true US3382520A (en) 1968-05-14

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US555032A Expired - Lifetime US3382520A (en) 1965-06-10 1966-06-03 Automatic machine for the treatment of metal offset printing plates

Country Status (3)

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US (1) US3382520A (fr)
CH (1) CH453389A (fr)
FR (1) FR1446456A (fr)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4542968A (en) * 1982-12-28 1985-09-24 Fritz Knollmann Device for treating photo printing plates
US4572639A (en) * 1984-07-13 1986-02-25 Mackson Richard G Film processing apparatus including a control system
US4733422A (en) * 1985-05-28 1988-03-29 W. A. Krueger Co. Apparatus for washing and rinsing of used lithographic plate members
US4894095A (en) * 1985-05-28 1990-01-16 Law Offices Of Dick And Harris Method for washing and rinsing of used lithographic plate members
US5694657A (en) * 1993-10-28 1997-12-09 Minolta Co., Ltd. Regenerating apparatus of recording medium

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4892111A (en) * 1987-06-22 1990-01-09 Grapar Corporation Production line part cleaning apparatus
US4893642A (en) * 1989-01-11 1990-01-16 Grapar Corporation Production line part deburring apparatus

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1004381A (en) * 1910-05-21 1911-09-26 Benno Danziger Barrel-washing machine.
US1299624A (en) * 1918-01-28 1919-04-08 Harry O Schuessler Apparatus for electroplating.
US1946360A (en) * 1933-03-21 1934-02-06 Harry W Roberts Dipping machine
US2048937A (en) * 1932-08-13 1936-07-28 Smith Corp A O Enameling machine
US3074417A (en) * 1955-08-08 1963-01-22 Natural Products Company Work processing apparatus
US3106927A (en) * 1962-01-15 1963-10-15 Madwed Albert Vapor chamber-tank unit
US3207337A (en) * 1963-03-21 1965-09-21 Harold G Abbey Key card dispatched conveyor systems

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1004381A (en) * 1910-05-21 1911-09-26 Benno Danziger Barrel-washing machine.
US1299624A (en) * 1918-01-28 1919-04-08 Harry O Schuessler Apparatus for electroplating.
US2048937A (en) * 1932-08-13 1936-07-28 Smith Corp A O Enameling machine
US1946360A (en) * 1933-03-21 1934-02-06 Harry W Roberts Dipping machine
US3074417A (en) * 1955-08-08 1963-01-22 Natural Products Company Work processing apparatus
US3106927A (en) * 1962-01-15 1963-10-15 Madwed Albert Vapor chamber-tank unit
US3207337A (en) * 1963-03-21 1965-09-21 Harold G Abbey Key card dispatched conveyor systems

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4542968A (en) * 1982-12-28 1985-09-24 Fritz Knollmann Device for treating photo printing plates
US4572639A (en) * 1984-07-13 1986-02-25 Mackson Richard G Film processing apparatus including a control system
US4733422A (en) * 1985-05-28 1988-03-29 W. A. Krueger Co. Apparatus for washing and rinsing of used lithographic plate members
US4894095A (en) * 1985-05-28 1990-01-16 Law Offices Of Dick And Harris Method for washing and rinsing of used lithographic plate members
US5694657A (en) * 1993-10-28 1997-12-09 Minolta Co., Ltd. Regenerating apparatus of recording medium

Also Published As

Publication number Publication date
FR1446456A (fr) 1966-07-22
CH453389A (fr) 1968-06-14

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