US2883961A - Device for coating and treating body surfaces, especially as applied to printing rolls - Google Patents

Device for coating and treating body surfaces, especially as applied to printing rolls Download PDF

Info

Publication number
US2883961A
US2883961A US424655A US42465554A US2883961A US 2883961 A US2883961 A US 2883961A US 424655 A US424655 A US 424655A US 42465554 A US42465554 A US 42465554A US 2883961 A US2883961 A US 2883961A
Authority
US
United States
Prior art keywords
solution
channel
coating
printing
discharge opening
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 - Lifetime
Application number
US424655A
Other languages
English (en)
Inventor
Kaulen Robert
Krohe Walter
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Application granted granted Critical
Publication of US2883961A publication Critical patent/US2883961A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

Classifications

    • 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
    • G03F7/16—Coating processes; Apparatus therefor
    • G03F7/18—Coating curved surfaces
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05C—APPARATUS FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05C9/00—Apparatus or plant for applying liquid or other fluent material to surfaces by means not covered by any preceding group, or in which the means of applying the liquid or other fluent material is not important

Definitions

  • FIG.2 DEVICE FOR COATING AND TREATING BODY SURFACES, ESPECIALLY AS APPLIED TO PRINTING ROLLS Filed April 21. 1954
  • FIG.2 DEVICE FOR COATING AND TREATING BODY SURFACES, ESPECIALLY AS APPLIED TO PRINTING ROLLS Filed April 21. 1954
  • This invention relates to a device for coating and treating body surfaces, especially as applied to printing rolls.
  • the hitherto known devices for coating the surface of bodies, especially printing rolls, with a layer sensitive to light are formed in such a manner that the light sensitive fluid is disposed in a narrow channel and the printing form or roll with the surface to be coated is moved transversely to the longitudinal axis ofthe channel past its discharge opening so that the fluid may pass over from the discharge opening to the body to be coated due to the surface tension of the liquid.
  • the layer is applied to the printing form not only completely uniformly but that the fluid itself is Without any impurity as well as without any elements impairing the uniformity of the layer or without any phenomenon, such as the formation of bubbles.
  • the enlarged opening was shaped triangular-1y in such a manner that the sides of the triangle converged in the direction of the discharge opening. With this construction, however, it is diflicult to keep the channel clean. Under these circumstances, the cleaning agent remained in the corners of the triangle whereby the composition of the copying solution was impaired.
  • Feeding of the copying solution into the channel may likewise be made with difficulty, as it has not been possible to prevent the formation of bubbles in the copying solution.
  • the bubbles are passed over to the printing form.
  • a layer on the printing form which contains bubbles presents a considerable disadvantage.
  • the present invention has for its object a device by means of which the above-mentioned drawbacks may be overcome. It is the purpose of the invention to secure an unobjectionable transfer of the light sensitive layer to the surface of the printing form.
  • the channel constructed in cross-section includes a narrow discharge opening with an adjacent enlargement whose walls converge downwardly.
  • the enlargement may likewise have an isosceles triangular form but in such a manner that the base of the triangle is directed downwardly.
  • the enlargement is preferably heart-shaped 2,883,961 Patented Apr. 28, 1959 ice in cross-section.
  • This construction has the advantage that foreign matter or decomposition products may collect in the feeding channel at one place, namely, the lowermost point whereby the channel may be kept clean very easily. Furthermore, the collection of cleansing agents in sharp angles is avoided.
  • the supply container is provided according to the invention with an outlet sleeve which tapers constantly towards the discharge pipe.
  • the outlet sleeve is preferably funnel-shaped.
  • the container may additionally be inclined in opposite direction to the outlet sleeve.
  • the channel as well as the supply container are surrounded by a jacket filled with a liquid or the like which serves for keeping the solution at a constant temperature.
  • the jacket of the enlargement and of the container as Well as the hollow space within the printing form are connected with a common rotary pump, whereby the printing form and the channel are kept at a uniform temperature.
  • the transfer of the copying solution to the printing form and the formation of the layer of the solution on this form cannot be impaired by a difference of temperature.
  • Fig. 1 shows diagrammatically a cross-section of the device according to the invention for coating a printing roll.
  • Fig. 2 is a diagrammatical longitudinal section and showing a supply container as a part of the invention.
  • the device for coating and treating of printing forms is essentially arranged in such a manner that the printing roll 1 is carried past or rotated above a discharge opening 2 which contains the treating medium.
  • the slot-like discharge opening 2 communicates with an enlarged channel or chamber 3 so that sufiicient medium may always be fed to the discharge opening 2 over the whole length of the same.
  • the lateral walls of channel 3 converge downwardly and a collecting groove 4 is formed at the lowermost point thereof, regardless of the specific cross sectional form of the chamber.
  • the whole device is surrounded by a jacket 5 so that the contents of the discharge opening 2 and of the chamber 3 may be kept uniformly at a predetermined temperature by means of a liquid or the like flowing through the jacket.
  • the discharge opening 2 should be made as narrow as possible. Its width is preferably about 2 mm. up to 5 mm. at most.
  • the copying solution has a certain viscosity so that the solution issues with a surface curved upwards over the edges of the discharge opening 2.
  • the coating of the printing roll 1 is effected in such a manner that upon approach of the roll to the head projecting somewhat above the discharge opening, the solution is taken along by the continued movement of the surface of the printing form and adheres to the surface thereof. When taking along the solution, all impurities or bubbles contained in the solution are passing over so that it is absolutely necessary that the solution is supplied free from bubbles and impurities.
  • Fig. 2 illustrates an advantageous construction of the feeding device.
  • the supply container 6 is provided with an outlet sleeve 7 which tapers uniformly to its free end so that upon feeding the solution from the container the air cannot dam up but escapes freely. This effect may still be improved by inclination of the container 6. In this manner is obtained a whirl-free discharge from. the container 6 and feeding to an overflow space 8 airanged at one end of the channel 2 and chamber 3.
  • the solution flows in a constant stream from the container 6 to the overflow space 8, whereby the formation of air bubbles is effectively prevented.
  • the construction of the supply container according to the invention has the further advantage that the same may be easily cleaned. There are no sharp angles, and for this reason, impurities are kept away from the solution.
  • the supply container is likewise suitably surrounded by a jacket 9 so that the stored solution may be kept at a predetermined temperature.
  • all jackets and the hollow space 10 within the printing roll are connected with one another and are preferably connected with a common rotary pump.
  • a cooling or heating liquid which constantly circulates through all jackets there is secured an absolutely uniform temperature of all mediums or parts operatively associated with one another during the coating process.
  • a device for coating and treating body surfaces of substantially cylindrical form, particularly printing rolls, while rotating about its longitudinal axis comprising a horizontally elongated hollow body having axially extending walls so disposed as to provide an axially elongated relatively narrow solution discharging channel having a mouth disposed at a predetermined uniform distance from the rotating cylindrical surface to be coated, said walls further providing a solution chamber beneath and in direct communication with the inlet to said narrow channel, and being laterally bulged to form a passage for a substantially unrestricted flow of said solution to the entire length of said channel, said walls then converging downwardly to form a substantially deep groove along the bottom of said chamber for the collection of impurities by settlement into this substantially quiescent portion of the chamber.
  • cham' her is substantially heart-shaped in cross-section and provided with a jacket extending upwardly over the sides of said channel to its mouth, whereby a uniform temperature control may be possible over the solution supply through the chamber and channel to the body surface for a coating at the controlled temperature.

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Supply, Installation And Extraction Of Printed Sheets Or Plates (AREA)
  • Printing Methods (AREA)
  • Printing Plates And Materials Therefor (AREA)
US424655A 1953-04-29 1954-04-21 Device for coating and treating body surfaces, especially as applied to printing rolls Expired - Lifetime US2883961A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE762613X 1953-04-29

Publications (1)

Publication Number Publication Date
US2883961A true US2883961A (en) 1959-04-28

Family

ID=6668473

Family Applications (1)

Application Number Title Priority Date Filing Date
US424655A Expired - Lifetime US2883961A (en) 1953-04-29 1954-04-21 Device for coating and treating body surfaces, especially as applied to printing rolls

Country Status (3)

Country Link
US (1) US2883961A (cs)
GB (1) GB762613A (cs)
NL (2) NL187134B (cs)

Citations (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US286402A (en) * 1883-10-09 Apparatus foe waxiig- papee
US1961827A (en) * 1933-01-26 1934-06-05 Mcbee Co Rotary press for printing wax carbon spots on paper
US2124085A (en) * 1932-11-16 1938-07-19 Firm Fernseh Aktien Ges Continuous film treating device
US2136468A (en) * 1936-12-30 1938-11-15 Waldo E Rosebush Moistener
US2342284A (en) * 1940-10-24 1944-02-22 Standard Knapp Corp Labeling machine
US2351271A (en) * 1940-11-27 1944-06-13 Goodrich Co B F Method of and apparatus for depositing films
US2352149A (en) * 1941-11-14 1944-06-20 Nashua Gummed & Coated Paper Strip dispenser and moistening means for same
US2357476A (en) * 1937-06-03 1944-09-05 Firm Of Eden A G Means for manufacturing printing forms
US2371871A (en) * 1943-10-09 1945-03-20 Pitney Bowes Postage Meter Co Tape moistening device
US2409872A (en) * 1944-12-07 1946-10-22 Better Packages Inc Tape serving machine
US2681294A (en) * 1951-08-23 1954-06-15 Eastman Kodak Co Method of coating strip material

Patent Citations (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US286402A (en) * 1883-10-09 Apparatus foe waxiig- papee
US2124085A (en) * 1932-11-16 1938-07-19 Firm Fernseh Aktien Ges Continuous film treating device
US1961827A (en) * 1933-01-26 1934-06-05 Mcbee Co Rotary press for printing wax carbon spots on paper
US2136468A (en) * 1936-12-30 1938-11-15 Waldo E Rosebush Moistener
US2357476A (en) * 1937-06-03 1944-09-05 Firm Of Eden A G Means for manufacturing printing forms
US2342284A (en) * 1940-10-24 1944-02-22 Standard Knapp Corp Labeling machine
US2351271A (en) * 1940-11-27 1944-06-13 Goodrich Co B F Method of and apparatus for depositing films
US2352149A (en) * 1941-11-14 1944-06-20 Nashua Gummed & Coated Paper Strip dispenser and moistening means for same
US2371871A (en) * 1943-10-09 1945-03-20 Pitney Bowes Postage Meter Co Tape moistening device
US2409872A (en) * 1944-12-07 1946-10-22 Better Packages Inc Tape serving machine
US2681294A (en) * 1951-08-23 1954-06-15 Eastman Kodak Co Method of coating strip material

Also Published As

Publication number Publication date
GB762613A (en) 1956-11-28
NL93336C (cs)
NL187134B (nl)

Similar Documents

Publication Publication Date Title
US3192895A (en) Web coating apparatus
US3827397A (en) Apparatus for coating moving filamentary strands
JPS59132966A (ja) 自由落下する液体カ−テンを安定化するための方法及び装置
US3045592A (en) Liquid applicator
US2536186A (en) Method of wiping liquid metal coatings
JPS596961A (ja) 移動中のウエブへ液体または発泡組成物を均一に塗布するための装置
FI68534B (fi) Floedesfoerdelare foer en vaetskefilmavgivande anordning
US3738534A (en) Apparatus for dispersing particulate materials
US3903843A (en) Coating apparatus
US2883961A (en) Device for coating and treating body surfaces, especially as applied to printing rolls
US1643330A (en) Method of and apparatus for coating
US3365326A (en) Finish supply system
US2426043A (en) Method of and apparatus for applying pigment and other materials to paper
US2795211A (en) Liquid flow-control
US2732319A (en) Method for coating paper with thermoplastic
JPS6051865B2 (ja) 線条体への塗料塗布装置
US2541479A (en) Method and apparatus for coating photographic film
US3102278A (en) Washing fibers with falling liquid film
US5681389A (en) Gravure coating feed apparatus
US4407224A (en) Apparatus for high speed size application
GB1015751A (en) Method and means for the automatic regulation of the continuous application of specified amounts of solids or liquids to a moving sheet of material
GB1280534A (en) Filtration control
US3587527A (en) Curtain coating apparatus
JPS5756070A (en) Method and apparatus for coating
US4327456A (en) Apparatus for applying a processing liquid to a sheet or web material