US2124680A - Surprinting - Google Patents

Description

July 26, 1938.

w. J. WILKINSON 2 ,124,680

SURPRINTING Filed Jan. 12, 1957 5 Sheets-Sheet l A?" 1 TYPE COPY 1Z2 MATTER GLUE PRINT l 1! PosITIvE l REvERsE J3 NEGATIVE I 12 STRIPPING i NEGATIVE J5 J55uRPRINTE0 ON 11 IJSTRIPPED ON 12 AND HALF TONE OPRQU ED osITIvIE h u -17 REEIST ON CoPY E TYPE 22 25 MATTER REVERSE NEGATIVE REVERSE NEGATIVE 5TRIPPING NEGATIVE HALF TONE POSITIVE h 24 5TRIFPED ON 25 AND AQUED Z6 5URPR1NTED f'ZOerZZZ f:

- RESIST ON W $250770 METAL J July 26, 1938. w. J. WILKINSON 2,124,680

SURPRINTING Filed Jan. 12, 195'? 3 Sheeis-Sheet 2 TYPE MATTER RED 5EP. BLUE 55?. Rev. NEG. REV NEG. 35

GLUE PRWT POSITIVE STRIPPING NEG.

HALFTONE PoamvE h 57 STRIPPE'D FROM 54 ON 56 AND OPAQUED i 45 a] REVERSE. DEVELOPED NEG. FROM 69 1 h HALFTONE POSITIVE FROM 40 RE5|5T 0N RESIST ON METAL o|= METAL OF RED PTG- BLUE Pm.

PLATE PLATE 565URPRINTED 545TR|PPED ON 55mm y 26 1938 .w. J. WILKWSON 2,124,680

SURPRINTING Filed Jan. 12, 1957 3 Sheets-Sheet 3 I 55 TYPE (9 COPY L MATTER G;.uE FRmT POSITIVE I 51 511 NEGATIVE I 1 55 5TIPPIMG l NEGATIVE OPAQUED 3 E HEMITONE POSITIVE 59 REslsT ON METAL 2 7555 wcopY w 55 L TYPE MATI'EF? NEGATIVE NEGATIVE STRIPPING NEGATIVE HEMITONE POSITIVE L 62 STRIPPED ON 65 AND OPAQUED AND SCREEN STRIPPED OVER TYPE-HAT r ER 66 5URPR\NTED ON 67 L l fizz/ 9 I g Wdizam J Max/250m Patented July 26, 1938 PATENT OFFICE suaram'rmc William J. Wilkinson, Eastchester,,,N. Y., assignor of one-half to Miehle Printing Press and Manufacturing Company, a corporation of Illinois Application January 12,1937, Serial No. 120,249

24 Claims.

The present invention pertains to certain features of improvement and betterment in the surprinting of typematter, lettering, or the like, either with colorless type or in one or more colors, in combination with associated illustrations or comparable matter.

One aim of the invention is to provide a new procedure of this kind which is economical to practice,.which may be followed with comparative ease and dispatch, and which aifords results of the highest and most acceptable grade, includingprecise registration.

. To enable those acquainted with this art to understand the principles underlying the invention, and, in order that the latter may be practised with various styles of printing, several desirable and preferred embodiments of the invention have been illustrated in the accompanying drawings which should be considered in connection with the following detailed description. In'

these drawings:

Figure 1 depicts the method of surprinting colorless typematter;

Figure 2 portrays the procedure when the let-' ,tering is printed in colors;

Figure 3 sets forth the process when lettering is printed in one color and dropped out of another in registered relation.

The procedures in Figures 1, 2 and 3 all relate to deep-etch onset-printing.

Figure 4 outlines the surprinting in colorless type in connection with intaglio printing employing a hemi-tone positive, by which is meant a positive in which all tones are one-half of their value in the original subject, used for the production of the printing plate; and

Figure 5 presents the method used in the same general procedure for surprinting in colors.

In all figures of the drawings the emulsion side of the element is shown-as being uppermost.

Referring first to Figure 1, it will be observed that a reverse-negative l I is made from the original subject or -copy l and from such negative a bichromated glue or gelatin positive ii on glass is produced and developed by water in accordance with the well-known and established practice, and such positive is dyed in methyl-violet-solution in the customary manner that a copper print is dyed for photoengraving, this dyeing permitting the extent of development to be made readilyapparent and making the subject visible in the positive, such dyeing, however, not modifying the lighttransmitting properties of the positive, which from a photographic standpoint is transparent.

Those acquainted with this art will, of course, understand that the reverse-negative referred to is made either by having'the glass of the lightsensitive plate toward the lens, or by making the negative through a glass-prism.

A strippingmegative I3 is made of the separate black typematter or lettering M to be surprinted and such negative is stripped from its support and applied on the positive l2 with the typematter in the desired position with relation to the ing been coated on its gelatin side with bichromated-glue, preferably with a coating of waterproof collodion between such coating and the negative, is registered with the master member l using the customary registration marks for that purpose, and exposed to light therethrough and then water-developed in the usual way, after which it is dyed with a concentrated methyl-violet-solution and then rendered photographically opaque 'as to its light exposed portions by a solution of iodine in a weak solution of potassium iodide, thus producing, after washing and drying, the element I6 comprising a combination of the original subject coupled with the desired associated typematter.

Hereinafter, in this application, where surprinting on a light-sensitive bichromated-glue coatingis referred to, the complete process is meant, namely, exposure of such coating to light through the master, developing with water in the usual manner, dyeing with a concentrated methyl-violet-solution, treating with a solution of iodine in a weak solution of potassium iodide, washing and drying.

. From the member l6 a half-tone positive I! is made and this'is used to provide a iight-exposed and developed resist coating l8 on the metal-plate which is etched therethrough in. the usual way, this printing plate printing the original subject correctly and also printing the typematter in colorless type in correct position, as will be readily understood from what precedes.

If the original subject is in colors and is to be printed in like colors and it is desired to have the lettering printed in colorless type on the final print, then each color-separation reverse-negative is treated in the same way as referred to above, under which circumstances, each color printing-plate will print the typematter in colorless type, the like typematters of all of the plates printing in exact register with one another.

It is, of course, to be understood that the single master-plate I5 is used with each of the several color-separation reverse-negatives; or stated in other words, it is not necessary to make a member ii for each such negative.

In case the lettering or typematter is to be printed in one or more colors, the procedure shown in Figure 2 is followed, in which instance, a color-separation reverse-negative 2| is made from the original subject or copy 22 for each color to be used in printing the typematter and then the following method is practiced for each such this compound negative 26 being opaqued as may be required so that only the lettering will be surprinted.

A half-tone positive 21 is made from the reverse-negative 2| and then on a bichromatedglue coating applied to such positive, the double negative 26 is surprinted, giving, when completed, the positive 28 which is then applied to, and printed through onto, the resist 29 on the metalplate or cylinder, which of course after suitable development is etched in appropriate manner.

Each color-separation negative treated in this way will result in the typematter being printed in its color, so that any single color or combination of colors may be used for such lettering, it being understood that only one such double .or master negative 26 need be made and used in the stated manner successively with the half-tone positives required to produce the desired result.

Colors of the copy not involved in the surprinting have their printing-plates made in the usual way, the surprinting, of course, being omitted, so that in the final print the original is in its proper colors and the lettering is in its selected one or more colors.

As another example, assume, for instance, that it is desired that the typematter or lettering be printed in certain colors and dropped out of another color or colors appearing in theoriginal, such a plan is depicted in detail in Figure 3.

In this case, orange-colored lettering is to appear in the final print of the copy and obviously such lettering must be carried by the yellow and red printing-plates to provide the orange color, but the copy presents a blue area in which such orange lettering must appear, and the lettering must be dropped entirely out from the blue and black printing-plates, this whole procedure, of course, calling for exceedingly close and precise register.

In carrying out this process, reverse development may be resorted to with advantage, by which is meant that method of known development whereby a positive may be made directly from a positive or a negative from a negative, in which case, however, the negative produced would be a reverse of the original negative.

Assuming that the original copy 3| has an illustration 32 in colors and a blue area 33 in which latter the typematter or lettering in the final print is to appear in orange color, from such copy a red-separation reverse-negative 34 is made as is also a blue-separation reverse-negative 35, and a methyl-violet-solution-dyed, bichromated-glue positive 36 is made from the blue-separation reverse-negative 35, in the manner specified above in connection with Figure 1.

4 A stripping-negative 31 is made from the typematter copy 38 and it is stripped onto positive 36 in proper position with relation to the zone corresponding to the colored area 33 of the original copy, whereupon the remainder of the positive 36 is opaqued by hand, thereby producing a duplex-member 39, the subject-matter of which is surprinted on the blue-separation reverse-negative 35 after the latter has been coated with collodion and on top of that coated with the usual light-impressionable bichromated-glue, thereby making member 40, and from such negative 40 a half-tone positive 4| is made which is used to provide the corresponding, photographic, developed, screened resist 42 on the metal-plate which, of course, is etched in the usual way through such resist.

Obviously, this surprinted, blue-separation printing-plate will print in blue and will leave the spaces for the lettering, on the blue area clear; or, in other words, the lettering will be colorless.

A half-tone positive 43 is made from the redseparation reverse-negative 34 and the subjectmatter of a reverse-developed, preferably, but not necessarily super-contrast, negative 44, made from the master 39, is surprinted on a light-sensitive bichromated-glue coating applied on the screened positive 43, producing the member 45, the latter being used to light-affect the resist 46 applied to the surface of the red printing-plate, the plate being etched in the customary manner through such resist after its development. Obviously, this red printing-plate will printthe illustration and the lettering in red.

The corresponding yellow-separation reversencgative is treated in the same way, including the use of the master negative 44 to provide a yellow printing-plate which will print the illustration in yellow and the lettering in yellow. 7

A black printing-plate is made in the usual way.

Thus all four color-separation printing-plates will print the illustration in their individual colors to collectively or unitedly provide a print correing-plate having the tones of the design or illustration represented at approximately one-half of their true-values and with the darkest shadows of the plate comprising separated ink-wells, the walls of which afford adequate support for the doctor-blade, has been developed and the present invention may also be used in the manner indicated in Figures 4 and 5 in conformity with such procedure.

If the lettering or typematter is to be printed colorless in the print, the method in Figure 4 is employed; whereas, if it is to be in one or more colors, the process set forth in Figure 5 is resorted to Referring first to the operation of Figure 4, an ordinary photographic negative 5| is made of the original subject or copy 52 and from such negative a methyl-violet-solution-dyed glue-print positive 53 is made on glass in'the manner hereinbefore mentioned.

A stripping-negative 54 having been made from the separate type-matter 55, it is removed from its support and affixed in proper position on the positive 53 and the resulting double member opaqued as needed, thereby producing a'master,v duplex, dyed positive-and-negative 5!.

Negative 5| having been coated with a light responsive bichromated-glue facing, with an intervening collodion-coating, has the subject-matter of member 56 surprinted thereon, thus providing the surprinted negative 51 from which a so-called hemitone, screened positive "is made, and'this is photographically printed, on the light-sensitive resist-coating 59 applied tofthe surface of the metal-plate which is to form the printing element.

-After such plate has been etched through the developed resist and used as a printing-plate or cylinder, it will be apparent that the original subject will appear properly on the print and the colorless lettering will be correctly associated therewith.

If the subject or copy is to be reproduced or duplicated in its original colors, each color-separation negative, corresponding to negative ii, will have the typematter surprinted thereon by means of the successive use of the single masterelement 56.

In the colored print the lettering will have been printed colorless because it will have been eliminated in the manner indicated from all of the color printing-plates.

On the other hand, in the event that the lettering is to be in one or more colors, then the practice suggested in Figure 5 is followed, wherein a negative 6! is made of the original copy 62, another negative 63 is made of the same copy, and a strippingmegative 64 of the typematter or lettering 65 is stripped on negative 63 and opaqued as needed, thereby producing the dual or twofold master-negative 66, the emulsion being scraped clean on negative 83 before applying the stripped negative 64 as may be needed to provide proper area or areas for the lettering.

From negative 6| a hemi-tone, screened positive 51 is made through a suitable screen with appropriate screen-distance and exposure, whereupon by a hereinbefore-speciiled bichromatedglue coating superposed on such positive 61, the subject-matter of the master duplex negative 66 is surprinted thereon, an appropriate screen being stripped on to the master duplex negative 86 over the 'typematter so that in the resulting surprinted positive Bl both the illustration and the type'matter appear as screened, this being required for proper support of the doctor-blade by the printing-plate to be made therefrom.

Positive 68 is then light-printed on the resist on the metal-plate and the resist when developed will appear as at 89, and, of course, the plate is etched as usual to form the printing-element.

If such printing-plate is printed with one color, the illustration and lettering will con'formably appear in the print in the same single color. In case the original copy is in colors and is to be so duplicated in the print, obviously, each such color-separation hemi-tone positive 81 made from the corresponding color-separation negative I will be surprinted from the single or common master 68 in the manner already indicated as would be required to produce the lettering in the needed color or colors.

0n the other hand, if the original copy had a colored area in which lettering of a different color or colors was to appear, then the original color or colors would have to be cut out analogously to the procedure presented in Figure 3.

- Those acquainted with this art will readily know what changes to incorporate in the described processes to get similar or different results, as, for instance, the manner of application "serted or added in like or analogous manner.

I Also modifications of the procedures'set forth above may be resorted to without departure from the heart and essence of the invention as defined by the appended claims and without the loss or sacrifice of any of itsmaterial benefits.

It is to be understood that on the master additional stripping may be done so as to add tone, Ben Days, etc.

As shown in the various figures of the drawings, the typematter or lettering is intentionally separated from the illustration, for purposes of clarity, but as will be readily understood, such lettering or typematter may be located directly in or on a vari-colored illustration. 7

The methyl violet solution hereinbefore referred to may be of any suitable strength as is well-known in the art, and in the practice of this process it may be practically or actually saturated.

As to the iodine solution, it is well-known that iodine is insoluble in water but is soluble in a weak solution of either iodide or bromide of potassium, and since the iodides and bromides are relatively expensive, a weak solution can be used to advantage and satisfaction.

I claim: a

1. In the method of surprinting supplemental matter for the production of a printing-plate, the steps of making a stripping-transparency of the original supplemental matter, making a transparency of the original copy, stripping said supplemental-matter-transparency and securing it in proper position on said copy-transparency, thereby providing a supplemental-matter-master, opaquing said master, if not otherwise opaque, ex-

a photographic opposite of said master on a thereof which have been acted upon by the light through said master.

- 2. In the method of surprinting'supplemental matter for the production of printing-plates, the steps of making a stripping-transparency of the original supplemental matter, making a transparency of the original copy, stripping said supplemental-matter transparency and securing it in proper position on said copy-transparency, thereby providing a supplemental-matter-master, opaquing said master, if not otherwise opaque, except for said supplemental matter, and supplying to each of a plurality of color-separation transparencies of the original copy a protogra'phic-opposite of said master, said opposite being photographically opaque in those positions thereof which have been acted upon by light through said master.

3. In the method of surprinting supplemental cept for said supplemental matter, and supplying matter for the production of a printing-plate,

opaque, except for said supplemental matter, coating a second transparency of the original copy with a light-sensitive stratum, photographically surprinting said master on and developing said .stratum, and rendering the light-exposed portions of said developed coating photographically opaque.

4. In the method of surprinting supplemental matter for the production of printing-plates, the steps of making a stripping-transparency of the original supplemental matter, making a transparency of the original copy, stripping said supplemental-matter-transparency and securing it in proper position on said copy-transparency, thereby providing a supplemental-matter-mas ter, opaquing said master, if not otherwise opaque, except for said supplemental matter, coating each of a plurality of color-separation transparencies of the original copy with a lightsensitive stratum, photographically surprinting said master on and developing each of said strata, and rendering the light-exposed portions of said developed coatings photographically opaque.

5. The method presented in claim 3 in which said light-sensitive stratum is bichromated-glue and separated from the underlying transparency by a waterproof-coating.

6. The method presented in claim 4 in which each of said light-sensitive strata is bichromatedglue and separated from the underlying transparency by a waterproof-coating.

7. The method presented in claim 3 in which said supplemental-matter transparency is a negative oi the original supplemental matter.

8. The method presented in claim 4 in which said supplemental-matter-transparency is a negative of the original supplemental matter.

. 9. The method presented in claim 3 in which said copy-transparency is a glue-print positive of the original copy. r v

10. The method presented in claim'4 in which each of said copy-transparencies is a glue-print positive of the original copy.

11. The method presented in claim 3 in which said copy-transparency is a negative of the original. copy.

12. The method presented in claim 3 in which said original copy-transparency is a reverse-negative of the original copy.

13. The method presented in claim 3 in which said light-sensitive stratum is bichromatedglue and separated from the underlying transparency by a waterproof-coating, in which said supplemental-matter-transparency is a negative or the original supplemental matter, and in which said copy-transparency is a glue-print positive of the original copy.

14. The method presented in claim 3 in which said light-sensitive stratum is bichromated-glue and separated from the underlying transparency by a waterproof-coating, in which said supplemental-matter-transparency is a negative of the original supplemental-matter, and in which said original copy-transparency is a negative of the original copy.

15. The method presented in claim 3 in which said light-sensitive stratum is bichromated-glue and separated from the underlying transparency by a waterproof-coating, in which said supplemental-matter-transparency is a negative of the original supplemental-matter, and in which said original copy-transparency is a reverse-negative oi the original copy.

16. The method presented in claim 4 in which each of said color-separation transparencies is a negative of the original copy.

17. The method presented in claim 4 in which each of said color-separation transparencies is a reverse-negative of the original copy.

18. The method presented in claim 4 in which each of said color-separation transparencies is a screened-positive of the original copy.

19. The method presented in claim 4 in which each of said color-separation transparencies is a screened-positive of the original copy and in which said stripping-transparency of the supplemental matter is screened.

20. The method presented in claim 4 in which said supplemental-matter-transparency is a negative of the original supplemental matter, in which each of said color-separation transparencies is a negative of the original copy, and in which each of said light-sensitive strata is bichromated-glue and is separated from the underlying negative by a water-proofed coating. 7

21. The method presented in claim 4 in which each of said color-separation transparencies is a reverse-negative of the original copy, in which said supplemental-matter-transparency is a negative of the original supplemental matter, and in which each of said light-sensitive strata is bichromated-glue and separated from the unative of the original supplemental-matter, and

in which each of said light-sensitive strata is bichromated -glue and separated from the underlying positive by a waterproof-coating.

23. In the method of surprinting supplemental matter for the production of printing-plates, the steps of making a plurality of color-separation transparencies of the copy, making a stripping negative of the supplemental matter, making a dyed glue-print positive of the copy, stripping said negative and applying it in proper position on said positive, opaquing the remainder of said positive if necessary, thereby providing a duplex first master, photographically making a second master from said first master by the process of reversal-development, surprinting said first masthereby providing a supplemental-matter-master opaquing said master, if required, except for said supplemental matter, coating a transparency of the original copy with light-sensitive bichromated-glue, exposing said coating to light through said master, water-developing said exposed coating, dyeing said developed coating with a methyl-violet-solution, rendering photographically opaque the light-exposed portions of said coating with an iodine solution, and washing and drying said coating. i

, WILLIAM J. WILKINSON.

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