DE2038436C - Process for the production of reproductions, especially reflective images, of color originals - Google Patents

Description

The invention relates to a method for producing reproductions, in particular reflective images, of color originals by color photographic means using the negative-positive method. - So far, such a process has been used in such a way that a subtractive color film develops chromogenically after exposure and the negative color film obtained in this way is exposed to the subtractive primary colors with the interposition of filters matched to the primary colors according to the number of primary colors on positive material and then that Positive material is developed chromogenically. As is known, three color-forming photographic layers are cast on top of one another in subtractive color films. These drive are made. In fact, such α f hKhiider an eye on my to lack of nSitaL because the terms of color reproduction and Quaütat, ^we "r ^ _bef riedigen. Under gradation ^Gr ^ is? ° ⁿ _playing Helligkeitskontradar" l aw _{fa of fotografisc} hen reproduction ^costs. "L! . κύταπΑ ζ. for example, the gradation of the three W ** ^ _{"vkbt practice} pure, resulting from £ ^ JRT" ^ _{6 s} i _c h limited only by Kopierülter f arreucnc, ie ^ ^^ ^ ausgleichen11 result easily arise _{with respect au £ color purity)}

tarrnge ru, not satisfying _{Tonabül {ung.}

^Fa * ^s * ⁿ * r * _other procedures, namely the

men cm ^ will be three films after

Tecnnicoior- ν ' _{efa dner} normal Schwaiz-

Run through one _{rfeQ from the ent} .

Waß-EntwKUung _Farbauszüg be en for

f * ^e * ^den . ^ f 'SLe matrices made. the

the * · "°° ™ ^ positives of the individual extracts. Matrices represent r ^ ^ ^ _{associated subtrac} .

«Each die = _{will then take place}

üven l-aroe rang ^^ ^ _{d (m Positiv} . _Film AbdrucK «e ^ _Technicolor . _V experience in

In addition, there is a _four-color process, since a black image is superimposed on the three SnSSS. This known process is disadvantageous for several reasons. First of all, careful assessment of the gradation for all three extracts must be ensured. In addition, the printing process is both

because of the necessary sharpness of the contours of the emzelo \ f RiiHp «! ak also because of the required MAY image as AuCN w "" _Te ilbilder technically

^^ nen _be _

is however the iat _with a proportion- ^^ βη and unwieldy weX can. From this w possibility

Recording film having three differently sensitized SS case obtained _{from the} supply £ _{then three} sub-Jei appropriate filters Sbwiedergabe However _vorb ^! Negotiated Verwill the invention

nen image very ^s ^ ^Hwie "ß
may. from
matter,

40

nac! ^

Sriff.SSSSSÄ S ^ tf G ^ £ ^

Self-sensitivity would also appeal. drive to

Coupler diffusion-proof in a halogen silver / gelatin extract one after the other

borrowed layer Margenta. This negative color film thus obtained is then exposed onto the positive material in the manner described above. The through the The re-productions obtained from the development of the positive material are often unsatisfactory. This is especially true for reflective images that are chromogenic according to this known manner

These measures of the invention * g that of any subtractive. Gnmdfartj on color separation is made and ^this S color separation is treated specifically ^ n. So there is the possibility to look at the individual negative

Color separations to be able to make color corrections in adaptation to the positive material. Furthermore the required gradation can be set in the course of the production of the individual negative color separations be it hard or steep gradation, under which one exaggerated reproduction of brightness contrasts understands, be it soft or flat gradation, which balances out contrasts comes that you can do retouching work on the negative color separations. In any case, it can as a result, achieve any desired reproduction in gradation and color on the positive material. Such a specific and individual correction of the number of subtractive primary colors in as it were spatially separated from each other, subdivided into individual negative color separations, cannot be achieved by the classic method after, as already mentioned, the classic negative color film produced as an undivided film with all subtractive primary colors will. Therefore, according to the known method, a maximum color breakdown is just as impossible as

influencing the gradation individually according to the subtractive primary colors. - After further training of the invention, the negative color separations can be masked or electronic Paths separated from each other and in the individual

ίο Basic color areas are broken down.

The advantages achieved by the invention are therefore to be seen in summary that a method for the production of reproductions, especially reflective images, of color originals photographic means, according to which color reproduction and gradation are flawless reproductions or supervisory images, but also transparent images can be produced.

Claims (2)

Patent claims: 1. Process for the production of reproductions, in particular reflective images, of colored originals by color photographic means according to the negative-positive process. draws that directly from the color template according to the number of subtractive basic colors separated from one another into the individual basic color areas disassembled negative color separations produced and then these negative color separations one after the other with the interposition of the primary color areas or sensitization The copying material matched filters are exposed congruently on positive material and then the positive material exposed in this way in known Way is chromogenically developed. 2. The method according to claim 1, characterized in that that the separated from each other and broken down into the individual primary color areas Negative color separations produced by masking technology or electronically will.