US1106816A - Color photography. - Google Patents

Description

F. E. IVBS.

COLOR PHOTOGRAPHY. Arrmcnon Hum' ma. 9. ma,

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To all whom t may concern? Be it known that I, F REDERIC E. IvEs, a cit-izen of the United States, residing at Woodcliif-on-Hudson, in the county of Bergen and State of New Jersey, have invented cert-ain new and useful Improvements .in

Color Photography, of which the following is a specification.

The present invention relates to theA art of color photography, that is to say the production of pictures in natural colors through the principles of photography.

F or illustration, the three-color system will be hereinafter referred to vas convenient for explaining the present improvements, although obviously the novel features or some of them would be applicable to a twocolor or four-color system.

Stated completely, the art of color photography or a process for practising that art, comprises the steps which result in the production of a plurality of color-selection negatives, and the steps by which from thosenegatives the finished picture or photograph 4 photography and were evolved by 'me vin bined into a multi-color print.

, Vhile` multim-color transparencies haveheretofore beeiiobtained,l for example as in 4 solved.

working out solutions to problems existing in such art never heretofore satisfactorily As covered'and claimed herein, the present improvement is strictly one' relating to color photography or to the making of multi-color photographic pictures wherein A three or other plural number of color ima-ges: in the production of 'which the action of light is anessential factor, are to vbe commy prior Patent No. 980,962, there has never yet, throughyears of unsuccessful attempt and research, been made known a color photography process for successfully and commercially producing multicolor prints upon paper in the flexible form of, and

analogous to, ordinary photographs, All l Specification of Letters Patent. Applicaties mea March 9, 1912. serial no. 682,774..

sorts of expedients and selections have been tried, but without any practical results attract-ive enough either to the amateur. or to the professional to survive. I have herein adopted a certain general plan of procedure and have so adapted and improved it as to make it practically and commercially satisfactory. The general plan comprises the production from the color-selection negatives, by photographic processes, of a corresponding set of vehicles or dye members embodying the image, and causing the respective dye images to be transferred successively by imbibition, usually to a piece of paper upon which the i'inal picture is to appear.

'lhe details of adaptation and improve- -ment will be more particularly described in Patented Aug., ll, Italia.

the hereinafter following specification of the preferred mode of carrying out the present improvement.

Hereinafter I will refer tothe preferred mode of producing the dye members from the negatives, and also tliecombining of the dye images to constitutea single print. Incidentally in describing the making of the print itwill be necessary to describe Athe making of a monochrome print, since a multi-color picture must commence with a monochrome. l

In causing the transfers of images by imbibition to the print member, I have adopt-- ed the novel principle of employing a substantial face pressure maintained between the mutually contacting members, applied at or before the commencement of imbibition, that is, and moisture to the receiving surface of the print. In making a superposition of a dye image upon a previous image, I 'employ the novel principle of first securin accurate registration and then allowing im ibition to commence.

If in printing by imbibition we start with the print in a moist condition and apply the dye member in face contact with it, afterward squeegeeing the two together, diffusi on will occur in the gelatin and paper of the print which will make the image flat andimsa'tisfactory; besides which the act of bring- 'ing the two into face contact is likely to cause unintended spread of dye by absorption at otherwise than the exact intended points. The same difficulty will occur if we start with. a wet dye memberor with both dye member and print wet, followed by' the pressure of *the squeegee` Moreover with l' over its area in proportion te the thickness y yunaffected gelatin-will be washed away either such procedure ,the print must be surgelatin which is soft faced with a species of and this is objectionso as to ,absorb the dye,

lable because t-he great aliinity' of the soft dye will frequently or l1nvariably cause tinted. The softness of the gelatin also ac-` centuates the objection prevlously noted. My invention is contrary to all of these procedures and entirely avoids the objections noted, besides possessing other advanta es which will appear inthe following detai ed description, or which will be obvious to those skilled'in the art. Heretofore, the production ofphotographc' rints by imbibition has been little more nature and indulged in principally by amateurs fond of' experiment and not critical of technical quality.

As the dye member and'print are the important elements dealt with by my invention,

.will first describe cach of those elements s'eparately as to its nature and requirements, a erfwhich I will set forth the steps of my process.

Description of dye memberr-The function of this member, whatever may be the particular principle on which it operates, is to absorb dye from a face according to e design or picture, and in that way to take and carry a dye image until afterward the image from the dye member to the print. I prefer a -dye member in the nature of a bichrom'ated gelatin relief which will `absorb dye of the relief, thus producing a dye image. Starting with,adphotographicjnegativa a relief'may be ma el .upon a bichromated gelatin film von a celluloid base, or the e uivathe celluloidA side next to the photographic nega.` tive, and subsequently developin ter. This relief member'may substan? tially as described by mein apaper published in the 'Joumaz of the Uamera Ulub, London 1894, page 63, excepting that I prefer to render the relief tenuous, as by the: process of my 'Patent' No. 980,962 of J anuary 10, 1911, namely by the incorporation of a-non-actinic dye in the gelatin to retard the penetration of light. A ter exposure' t%)ie4 development in water at about 100?A F., this portions affected by the light being rendered ilnspluble and remaining to constitute the re- 1e Description -0 at s eaking, f im ye from the dye-member may be employe Specifically, the rint should be pervious or penetrable by molsture to fully carry out the' lent thereof, by exposing the same wit member.-Generally Y' Yadvantages'of the present improvement.

For example, the printpmay comprise a sheet- -this paper possesses.

t an experimental indye bath selectively,l that 1s, invarying1 quantities overits suris transferred l member to be in dry condition, t

any surface capable of imbibingof ordinary or special paper, and I prefer that this shall be coated on the side which is to receive the image with a hardened gelatinpsurfacc, the hardness of the gelatin being of such degree as to render it insoluble in boiling water. paper that will serve the purposes hereof, I may mention a paper now on the market known as glossy velox with, however, its sensitive elements removed, but Iv prefer a somewhat thicker coating of gelatin than best results I further harden and mordant the gelatin by treatment with a strong solution of chrome alum.'

Having now described the dye member and the prepared paper. 0r print, ny preferred process of imbibition printingis as As an example of a coated y In order to insure the follows: rIhe dye member is first supplied with dye, and this will ordinarily -be done' simply by immersing the member'in a dye solution, with of course proper precautions for'the control of the depth of the dyeing. An overdyed relief'm-ay be reducedsimply'by immersion in water. The dye membertakes up the dye Y by selective absorption, the

amount of the dye absorbed `at different partis of the surface being controlled by the nature of the dye member, namely its thickness at that point. In this step a ldye image is produced, the" dye member serving as av carrier thereof, retainin'or the dye image until afterward transferred to a print.

In my preferredl operation both the dye' member and the print are 'to bein a vdry condition before being brought into contact, al-

though within my broad invention this may the dye e procedure may be continued as follows. The dye member and print are. assembled or brou ht into contact together with. certain ot er sometimes be obviated. Assumin desirable elements prior to their bein opery ated upon by powerful pressure. -or example we may start with a. sheet of rubber uponwhich the dry dye member will be placed face upward, and'upon the dye member the -print paper-inA dry condition with prepared surface downward. Moisture I prefer to apply not yfrom the front rbut from the back of the print, and to this end a wetted element may be included in the assemblage. At the same time for reasons that will a pear, itis desirable'to dela the access o moisture to the contact-ing ye member and rint. y I therefore place a single sheet of 'y pa er or a blotter upon the back of the invert print paper, and then upon that a sheet o assembled in any convenient placeand held or secured together until pressure is ap lied,

and of course aidsmay be used to ai and water saturated blottingpaper. Finallythere may be a second sheet.

Ilo

after W assist the process of assemblage. Care should be taken that theA water in the blotter contains no chemical that will soften the gelatin of the print, and if notstrictly neutral it should be slightly acid rather than .a1kaline.` Promptly upon assemblage pres? -penetrate the intermediate sheet or blotter before the full* ressure islacting upon the pack. During t ie maintenance of the ressure, moisture is forced through the back of the print and passes through the print to the dye member, both members thereby becoming moist.. In this condition the dye image transfers to or is imbibed by the'print. In practice l find a very denite advantage is gained by giving five minutes powerful pressure on the pack as described, then opening the pack and re-wetting the two blotters,

ich the pack is again subjected to pressure for another live minutes. After the pressure has operated for the designated time, thel parts may be disassembled at once `s olthat the dye member maybe returned to the dye bath and the print may be dried, but

I prefer to let the dye memberand the at tached print dry out in contact, and pull them apart when quite dry,A thus insuring against shrinking of the print in drying. lf the print is stripped from the dye member While wet, it should be laid upon a glass plate and clamped all around'the edges while drying out, if shrinking is to be avoided. l

By the above-described process 'involving dry contact under-pressure between the member carrying the dye image and the pervlous printwith hardened gelatin surface, water being afterward introduced by tion throughthe back of the paper, the objections before noted are overcome 'and many lfurther 'advantages are' attained.

' Expansion, contraction, buckling and all relative shifting of the dye member and the print are absolutelyv prevented by the fact that they are closely confined bythe very heavy plate pressure before any moisture reaches the contacting members through the intermediate dry layer.

Thedyed relief member and the print when of the character previously described,

would have, if of equal thickness of gelatin.,` approximately equal atlinities for the dye, Vso that half of the dye would remain in the reliefV member. By making the.I gelatin coat The described operation much thicker upon the print paper, it in due time will labsorb more than half of the dye. v

ItV is easily ascertained how farto dye the relief member'. to secure proper.v depth of color in the rint. lln ,any case it is found that the dye 1s taken up quantitatively, practically speaking, and that gradations are very perfectly preserved.

It is desirable that the dye shall not penetrate the gelatin coating so far as to pass into the paper where it is likely to spread and to prevent obtaining the clearest and most brilliant images. The hardness of the gelatin coating'is important in preventing this. in my process, and it is also an aid to have the gelatin as before stated fairly thick and further hardened and mordanted by vtreatment with chrome alum. The harder the gelatin, however, the better the image will be kept in the surface and away from the paper, and in some cases this fact will enable the reduction of the gelfatins thick! ness.

The resultsobtained by following the steps above set forth are found to be 'very perfect Ain definition, gradation and/1 brilliancy, so as to render the process entirely satisfactory for making both monbchrome and multi-color pictures, and the process enables the employment of a great variety of colors sincea large range of dye-stuffs is available, and the proper dyes for the three color System may therefore be selected.

The process as above described may be modified where desired by not assembling the wet member or blotter wjith the other members as described, but on the contrary attaching it to the face of the moving platen so that in effect we have a moist platen able to simultaneously cause pressure and apply moisture upon the assembled' dye member and print. This modification to some extent simplilies the process and may obviate the employment of the intermediate pervious sheet or blotter.

A more extensive modification may be adopted under certain circumstances as follows: One or both of the members, the dye member and the print, may be actually moist at the time of contacting, one of them being preliminarily carried by or secured to the bed of the press, the other being carried by or secured to the platen. Precautions would have to be taken to secure the two.

proper registry of Upon throwing down the platen linto pressing position, two things occur simultaneously, namely the contact of the two `members and the heavy plate pressure invention.

In order to produce multi-color print-by the present invention we proceed asv follows,

assuming the three-coloiisysteni. From the three color-selection negatives one or more,

and preferably three, relief members or'dye carriers will be produced. These are' intended to be dyed in three different dyes for example yellow, peacock blue and magenta; and subsequently in combining the three color images it is preferred that they be applied in the order ]ust recited. This being so the process will be initiated by commencing with the yellow colored dye member which will be brought into contact in dry condition with the prepared print. These two will then be assembled with a moist member and pressure promptly applied' so as to cause transference of the color image by imbibition just as hereinabove described for roducing a monochrome. At this point in act we have a yellow colored monochrome. After the print has dried the procedure will be continued until the final three-color `print is attained. The second and third colors may be added to the print in any.desired'way; for example the dyed reliefs might be bodily mounted upon the print in accordance with either of my prior Patents Nos. 960,939 or 980,962.

v. I third color lmages I 45 ment.

. registry,

Another mode of applying the second and is to continue according to the rinciples of the present invention. After t e yellow image has been duly transferred to the pr1nt the latter in a dry con dition will be brought into contact with the second dye carrying member, say the peacock-blue member. The peacock-blue relief-is of course transparent because having a base of transparent celluloid, and therefore the registry' ofy the partlymade print andthe magenta relief member is easily and accurately effected.. This is very important as registry by leye 'is a most satisfactory manner of registry. Both of the members being dry the registry may be `deliberately performed,and thus accuracy depends only upon the correctness of the operators judg- In addition to this advantage in process of sliding. the two members into registry no smearing or. premature transference of color is possible,- the two members being not yet moistened and' imbibition not having commenced. As before, the mutually contacting dye member and print will next be assembled with a moist member', thel whole being promptly put into the bed-andplaten press and heavy pressure immediately lied and maintained.

he great utility of my invention in carrying out this process will now be seen.'

Two ima-ges having been superposed, one of them to be imbibed upon the print that lalready carriesthe other, any distortion whatsoever, contraction, buckling, etc., as between the print and dye member, would destroy the registry. Perfect registry has been i that the iinbibition takes place.l

fer.

It will be noted that each of the dye carrying it will also be observed that in the obtained while the members are dry and then the heavy plate pressurev comes and clamps the members securely together against any possible distortion or movement.

It is during the maintenance of this pressure Therefore there is bound to be perfect superposition of the images. At no time in the procedure 1s there any opportunity for error i'n the transowing to the mordanted and hardened character of the receiving gelatin, the color first applied 1s fixed, and this practically prevents appreciable reverse flow of the first color back into the second dye member. .A fter the requisite time of pressure, the parts will be carefully disassembled. After this again the steps will be repeated for superimposing the third and final color image upon the print already bearing two colors. This completes the print. Operations .canv paring a plurality 'of sets of dyed relief members, or by operating at the same time in different colors on several prints; and a number of presses or a large press. may be employed to this end. Y

lC onsonant with all of the above described processes `are many possible lapplications and variations, for example it is obviousthat artists may locally dye or retouch the work. This is easily permitted to be done during Athe different stages of the operation since i members may, be brushed with dye at points where desired,

be expedited by pre.

vion and thel process' otherwise will be unaltered.`

An entire dye member may be dyed more '0r Y less deeply as the artist may desire, and the shade of color may be varied tosuit. any special objects of the artist. y

Another possible application of my inv vention is .one permitting a subdivision of each color ima e and transferring portions only of it'to t l area of the picture may be cross-lined and the color image appliedfonly. at eriodic strips or other subdivided areas minute or otherwise. And when there are three color images, portions of vthemrespect-ively may be applied 'in rotation in such strips or subdivisions, and in this way a three-color perposition ofimages. v

Many other variations and applications of my invention are obviously possible,- and therefore I .desire not to` be limited to the 'precise procedure above set forth, nor to be limited in any respect beyond the underlying principles of the present improvement excepting as set forth in the appended claims.

Substantially "in one sense -my improvement involves the novel method of making multi-color pictures lby imbibition from a set of photographically prepared dye meinbers by bringing a print member'into cone print. For example,tiiev lions printv might be produced without actual suin both cases,

' 4celluloid base and gelatin relief.

tact with each of such dyemembers and subjecting the two to plate pressure in the presence of `moisture, especially when the pressure is begun not after both the print 5 member and moisture reach or have access lto the dye member. Thus, as already made clear, the two members sometimes will be contacted before pressure, in which case they will be dry and the moisture allowed access only upon or after application of pressure; whereas sometimes the contact and pressure take place simultaneously, in which case either or both members might be previoiisly'moist. The principle is the same since dye transference is posduring the time of sustained plate The plate pressure contemplated by me is to be such heavy pressure as is obtainable by a screw operated press or the like. 4

Taking into account the necessity of registration as between the partly made print containing an image and the dye member for applying a, second image thereon, the present improvement may be said to involve a method whereby the second image is combined with the 'print containing the first image by first accurately registering the sible only print member with a dyemember before im- A bibition commences, and thereupon causing imbibition of the color image from the dye member into the print member; this being preferably done, as before stated, by effecting registration. while the members are in dry contact, and thereafter applying the necessary moisture and the intimate contactv afforded by the plate pressure.

A part of the hereinabove description -refers to particular. materials and apparatus capable of illustration. Drawings, therefore, are appended hereto in which for con` venience thin dimensions are exaggerated..

ln said drawings, which are merely illustrative of materials 'and apparatus that may be employed in carrying out the present invention, Figure l is a face View of a carrier bearing a dye image. Fig. 2 is an enjlarged section on the plane 2, 2,v of Fig. 1. Fig. 3 is a further enlarged section showing substantially' the relative thickness of the l.F ig. 4 is .asection -of the print member. Fig. 5 .illustrates the first method of causing imbibit'ion after registration. Fig. 6 shows another Way fof doing the same. ,Fig .7 shows the second method. y i

The dye 'carrier 11 has the relief 12 at its face, and the transparent backing 13. The color.d image 'is constituted by the dye absorbed linto the relief 12, which varies in thickness. T -he print 14 consists of the colloid coating 15 on the paper backing 16. Assuming the members` l1 and 14 are dry,

theymay be assembled as in Fig. 5:

dye carrier 1l will be placed thereon face that. Above the dry blotter 18 is thel Wet blotter 19, and a second rubber sheet 20. These assembled elements 2l may then be placed in a press consisting of a bed 22, and a descending platen 23. 'llhe platen causes pressure, and, as already explained, the moisture from the Wet blotter permeates the members 11 and 14, causing imbibition. The wet blotter 19 may be secured to the platen 23 as in Fig. G, by a flexible brass plate 24.4 rlhis fiattens out, as the platen descends, by contact with rigid yplate 25. Thereby moisture is excluded from the print until after the members have been properly registered and the pressure applied. The print 14, might be secured to the platen 23 as in Fig. 7 by means of clips 26. Thereby the print may successively be brought down upon the different dye carriers 11, successively positioned upon the bed 22. Wliichever of the illustrated methods is adopted,

it is understood that the three color images 1i, 11, i1, are

1. ln the art of color-photography the method of making multi-color prints from a set of color-selection negatives comprising the following steps; photographically preparing dye 'members from at least one of said negatives, dyeing such members to produce color images therein, placing each such dye member anda print member in mutual face contact, and maintaining` between said two members in the presence of moisture a substantial plate pressurev applied before imbibition has substantially commenced.

2. In the art of color-photography the method of making multi-color prints from a set of color-selection negatives comprising the following steps: photographically preparing from'at least one of said negatives dye members consisting` of tenuous reliefs in bichromated gelatin, dyeing such members to produce color images by selective absorption therein, placing each such dye member and a print member in mutual face contact, and maintaining between said two members in the presence of moisture a substantial plate pressure applied before imbibition has 4 dye member in mutuall face contact with a print member consisting of paper coated with hardened mordanted gelatin, and maintaining between said two members in the presence of moisture a substantial plate pressure applied before imbibition has silb- '..intially commenced.

4. In the art of color-photography the method of making multi-color 4prints from a set of color-selection negatives comprising the following steps: photographically preparing from at i least one of said negatives dye members consisting of tenuous reliefs in bichromated gelatin, dyeing such members to produce color images'by selective ab* sorption therein, placing each such dye niember in mutual face contact with a print member consisting of paper coated with hardened mordanted gelatin, and maintaining between said two members in the pres- 22 enceof moisture a substantial plate pressure applied beforeimbibition has substantially commenced.

5. In the art of color-photography the method of making multi-colnrprints from `a set of color-selection negatives comprising the following steps: photographically preparing' dye members front at least one of y said negatives,

lduce color images dye member and a print member in mutual .face contact while both are dry, and then subjecting them tosustained -plate pressure and to moisture.

6. In the art of` odor-photography the method of making multi-color prints from a set of color-.selection negativescomprising the following steps: photographically preparingv dye members from at least'oiie of said negatives, dyeing such members to'pro-4 duce color images therein, placing each -such dye member and a colloid coated pervious print member in mutual face contact while moisture applied through the back of the pervious plrint member.

7. In t e art of color-photography the method of making multi-color prints from a set of color-selection negatives comprising the following steps: photographically preparing dye members from at least one of said negatives, dyeing such members to produce color images therein, lacing each such dye member and a colloi coated pervious print member in mutual f ace contact while both are substantially dry, and then subjecting them to sustain plate pressure and to moisture applied Athrough the back of the pervious print member y sheet there located during pressure.

dyeing such members to protherein, placing each suchv substantially sisting of gelatin, dyeing such successively othare substantially dry, and then subjecting them to sustained plate pressure and toA ferring such images in registry to a single print a separate moist '1 plate pressure and to moisture.

8. In the art of color-photography the lmethod of making rmulti-color prints from a set of color-selection negatives comprising the following steps: photographically preparing a plurality of dye members from said negatives, dyeing such members with suitable different colors to produce color images therein, and then successively transferring such images in registry to a single print member by placing each such dye meme r in turn in face contact with such print f .'member, and maintaining between sai-d two members in the presence of moisture a substantial plate pressure applied before im'- bibition has substantially commenced.'

9. In the art of color-photography the method of' making multi-color prints from aset of color-selection negatives comprising the following steps: photographically preparing a plurality. of dye members from said negatives, dyeing such members with suitable di'erent colors to produce color images therein, and then successively transferring such images in registry to -a single print member consisting of paper coated with hardened mordanted gelatin, by lacing each such dye member iii turn in ace contact with such print member, and maintaining between said vtwo members in the presence of moisture a substantial plate pressure applied before imbibition has substantially commenced.

10. In the art of color-photography the method of making multi-color prints from a set of color-selection `negatives comprising the following steps: photographically preparing a plurality of d-ye members from said negatives, each such dye memberV cona tenuous relief in bichromated members with suitable different colors to produce color images therein by selective absorption, and then registry to ay single print member consisting of lpaper coated with hardened mordanted gelatin, by placing each such dye member in transferring such images in turn in face contact with such print member,

and maintaining between said twov members in the presence of moisture a substantial plate pressure applied before imbibition has substantially commenced.

11. In the-artl of color-photography the" method of making multi-color prints from a set of color-selection negatives com rising photographical y prparing a plurality of dye members from members with suitable di'erent `colors to produce color and then successively transmember by placing -e'ach such dye member in turn in face contact with such rint member while both are substantially ry, and thenv subjecting them to sustained ideama 13. In the artl of color-photography theA method of making multi-color prints from a. set of color-selection negatives comprising the following steps: photographically preparing a plurality of dye members from said negatives, dyeingr such members with suitable different colors to produce color images therein, and then successively transferring such images by imbibition to a single print member, each transfer accomplished by the drv superposition of the print member and a dye member and the application of moisture and of sustained plate pressure thereto during imbibition.

14. In the art of' color-photography the method of making multi-color prints from a set of color-selection negatives comprising the following steps: pbotographically preparing a plurality of dye members from said negatives, dyeing such members with suitable dierent colors to produce color images therein, and then successively transferring such images by imbibition to a single print member consisting of paper coated 0 with hardened mordanted gelatin, each transfer accomplished by the dry superposiv tion of the print member and a dye member and the application of moisture and of sustained plate pressure thereto during imbibition. v A

'In the art of color-photography the method of making multi-color prints from a set of color-selection negatives comprising the following stepsrphotographically preparing a plurality of `dye members from said negatives, dyeing such members with suitable diiferent colors to produce 'color images.

therein, and then successively transferring such images by imbibition to a single print member consisting of paper coated with hardened mordanted gelatin, each transfer accomplished by the dry superposition Aof the print member and a dye member and the application of moisture and of sustained 60 plate pressure thereto during imbibition, the

moisture bein applied through the back of the print mem er.

16. In the art of color-photography the method of making multi-color prints from y a set of color-selection negatives comprising ye members from said chrome image from one the following steps: photographically preparing a plurality of dye members'from said negatives, each consisting of a transparent colloid photographic relief, dyeing such members with suitable dierent colors to produce color images therein, and then successively transferring such images by imbibition to a single print member consisting of paper coated with hardened mordanted gelatin, each transfer accomplished by the dry superposition .of the print memberand a dye member and the application of moisture" and of sustained plate pressure thereto during imbibition.

17. In the art of color-photography the method of making multi-color prints from fa set of color-selection negatives comprising the following steps: photographically preparing a transparent dye member from one of said negatives, dyelng such member to produce a color image therein, and then placing in registry and face-to-face with said dye member a print member having a different color image, followed by wetting to cause imbibition, and the maintenance of plate pressure during the period of imbibition, whereby the two images are combined in the print.

18. ln t-he art of color-photography the method of making multi-color prints from a .set of color selection negatives comprising the following steps: paring dye members said negatives, duce color monochrome print in one of the printing colors, and combining a second color image with such monochrome by first accurately registering the print member with a dye photographically prefrom at least one of dyeing such members to pro- Amember while in dry contact; and thereupon causing imbibition of the color image from the dye member to the print member, through moisture and pressure.

19. lnl the art of color-photography the method of making multi-color prints from a set of color-selection negatives comprising the following steps: producing a monoof such negatives in the corresponding one of the printing'colors upon a suitable paper ber, photographically preparing from another of such negatives a dye member adapted to selectively absorb and carry dye, dyeing such dye member by wetting with a dye of t-he corresponding printing color to thereby produce a color image, thereafter e'ecting the accurate registration of said dye member with said print member while preventing imbibition, and thereafter causing transfer by imbibition of the color image from said dye member into said print member by maintaining the two previously registered members in intimate moist contact While preventing any relative movement between the two members, whereby the images ima es therein reparin' a or other print-memand mordanted gelatin 8f. l l

are accurately and perfectly -combined into a single picture with clean outlines and without overla ping or blurring of colors.

20. In tlixe art of color-photography the method of making multi-color prints from aA set of color-selection negatives comprisin the following steps: producing a hardene coated print from one of such negatives in the corresponding one of the printing colors upon a suitable paper or other print-member, photographically preparing from another ofsuch negatives a transparent colloid-relief dye member adapted to selectively absorb and carry dye, dyeing suchl dye member by wetting with a dye of the corresponding printing color to thereby produce a color image, eifecting'the accurate registration of said dye member with said print member while ,preventing imbibition, and thereafter' causing trans r by imbibition of the color image from said dye member into said print member by maintaining the two previously registered members in intimate iynoist contact while preventing any relativemovement between the two members, whereby the im ages are accurately and perfectly combined into a single icture with clean outlines and without over appin or blurring of'colors.

21. Inthe art o color-photography the thereafter method of making multi-color prints from a l set of color-selection negatives comprisin the following steps: producing a hardene andmordanted gelatin coated print fr om one of such negatives in the corresponding one of the printing colors upon 'a suitable paper or other print-member, photographically preparing from another of such negatives a transparent colloid-relief dye member adapted to selectively absorb and carry dye, dyeing such dye member by wetting] with a dye of the correspondin printing color to thereby produce a co or image, thereafter eifectin the accurate registration of said dye memer in contact with said print member while both are lface-dry, and thereafter causingmoisture to penetrate to the contacting faces of the members to produce imbibition while preventing any relative movement between the two previously registered members, whereby the images are accurately. and perfectly combined into a single picture with out overlapping or blurring of colors.

In testimony whereof I affix my signature in presence of two witnesses.

FREDERIC EUGENE IVES'. Witnesses:

DONALD CAMPBELL, LESTER C. TAYLOR.

atr

clean outlines and with- A

Images