US1209453A - Color photography. - Google Patents

Description

i. KITSEE.

COLOR PHOTOGRAPHY.

APPLICATION FILED MR. 3. 1916.

1 09,453. Patented Dec. 19, 1916.

2 SHEETS-SHEET l.

awuenioz Wikneoau I 7 1. KITSEE. COLOR PHOTOGRAPHY.

APPLICATION FILED NAR- 3, I916.

1,209,453, Patented Dec. 19 916.'

2 SHEETSSHEET 2- assembled and put in'place, and after the proper light is provided for, then the handle 24: of the driving gear wheel 11 (illustrated in Figs. 2 and 4) is turned in the direction of the unfeathered arrow. This driving gear 11 is in mesh with the stationary rack 19., fastened to the base 1, and therefore moves the movable frame work 2 in the direction of the feathered arrow and revolves at the same time the three sensitized rollers through the shafts 9 and 10 operatively related to each other through the intermediate gearing. This gearing is so arranged that when through the movement of the movable frame work the complete color surface has been brought into the optical field of the lens systems, the sensitized rollers will have made one complete revolution. 'l he diaphragms l, 4: and l perform the function of limiting the optical field of the lensF-ystems 6, 6 and (W, is clearly shown by dot and dash lines in Figs. 2,4 and 5. Such arrangement is necessary for the purpose of photographing aplane surface onto a movable cylindrical surface, to prevent distortion of thecolor images when. photographed on the rollers. ii 1th a system as described, a true copy of the color surface will be photographically impressed upon the rollers, but as the first of the rollers is provided'with a color filter allowing only red rays to filter through, and the secondwith a filter allowing only green rays to filter through and the third with a filter allowing only blue-violet rays to filter through, it is obvious that one roller will have photographed thereon the images (so to speak) of the red, the second roller of the green and the third of the blue-violet. As stated above, when the movable frame work 2 has completely brought the whole color surface 1.3,into the optical field of the lenses, then each of the sensitized rollers has made one complete revolution and each of these rollers has therefore photographed thereonv he ima of the selected color of the whole color surface 13.

To more clearly describe the mode of operation and its practical working, it is supposed that only one roller is employed and this roller is provided with a red filter. In its course of travel. over the surface to be photographed, it will have, photographically speaking, impressed thereon at the start the first line of dots or squares of this surface and will then during the course of travel and by its own rotation during said travel, have photdgraphically impressed thereon successive lines of said dots or squares till through the whole entire revolution of this roller corresponding with the line of travel over the whole surface to be photographed, all the lines of squares or on said roller, but as said roller is provided with a red filter only such dots or squares employed, the second roller following the-- first roller and it is supposed that the second roller is provided with a green filter. At the start only the first roller or the roller provided with the red color filter will have impressed thereon, always photographically speaking, the red dotsor squares of the first line of the surface to be photographed and when then the first-roller advances to a predetermined distance,photographing thereby the dots or squares of succeeding lines, the second roller will come in the field of vision of the first line and will have impressed thereon, photographically speaking, the green dots or squares of said first line and if a third roller is employed and this third roller is providedzwith ,a blue-violet color filter, this roller will, if the advancement of the first and second rollers are ,far enough, come in the field of vision of the first line and will-Lhav, photographically speaking again, impressed thereon {the dots ,cr squares of the first line corresponding tofthe color of its own filter and ifas statedabove-thc frame work advances and through this advancement each of the rollers revolve, it is obvious that each of the rollers will in succession have photographically impressed thereon the squares or dots corresponding to its own filter of each succeeding line until the entire surface has been, photographically speaking, traversed and the last roller has had photographicaily impressed thereon the corresponding dots or squares of the last line of the surface to be photographed. Preferably, without taking the rollers out of their frames, they are then developed in the usual manner, and are then, by preference, etched for the purpose later on to be used as printing rollers. these rollers, either by photographic or mechanical means, copies may be made on other rollers.

To reproduce thecolor scheme of the color surface as illustrated in Fig. 1, on a film with the aid of these rollers, it is only necessary to provide each of the rollers with the required colored ink and print from same in the usual manner.

The great advantage of this system lies therein, that the placement of the different colors on the film will exactly correspond with the placement of'these colors on the color surface 13 and will therefore repre sent an exact duplicate'of this color surface.

Care has to be taken, that the color line at the beginning should blend, so to speak, in the color line at theending so that the whole may represent a surface without demar-cation.

Tin-practice each individual color image It is obvious that from on the roller should be of comparatively small dimension, sothat when the color scheme is printed on the picture film proper, each individual color image should, when projected on the screen with the picture, not occupy a space larger than about one-sixteenth of a square inch. It is therefore obvious that when the color surface is photographed on the three rollers each of the color images has to be suitably reduced.

Having now described my invention what claim as new and desire to secure by Letters Patent is 4 1. In the art of color photography the method which consists in first producing a series of images, differently colored, on a writable surface, photographing then said on a series of blanks suitably sensltized, each through a filter of different color,

developing the surfaces of said blanks in a manner so as to produce therefrom surfaces suitable for printing, and printing with said blanks simultaneously on a film later on to be used for photographic purposes, each blank provided with a different color.

'2. The method which consists in, first photographing a surface provided with the required color scheme on a series of rollers, provided each with a'separate lens system and filter of a different color, developing the photographed surfaces. and preparing the surface of each of said rollers for the procof printing.

3. The method which consists in: first-providinga suitable surface with lines of dots or squares of required color value in reaired sequence, photographing then said ddts" or squares simultaneously on a series ofrollers suitably sensitized, developing then said rollers and differentiating in height between the places acted upon by the rays of light and the places not acted upon bysaid rays. 7

4. In theartof producing color filters for photographic blanks the steps which consist in securing a series of rollers mechanically as to each other, photographing on each of said rollers a multicolored screen, each roller through a different color filter and developing and preparing said rollers for the proc ess of printing.

- 5. In the art of producing color filters for moving picture films the improvement which consists in providing the surfaces of a series of rollers with suitably sensitized lay ers, securing said rollers mechanically as to each other, photpgraphing a color screen on each of said rollers with the interposition of a colorfilter differing for each of said rollers, developingsaid rollers and preparing then the surfaces of each of said rollers for printing purposes.

6. In the art of producing color filters for photographic blanks the method which consists in photographing on three rollers, mechanically connected to each other, and suitably sensitized, a seriesof different colored images each roller provided with a different color filter, developing then said rollers and preparing the same for the process of printing. p

7. In the process of producing with the aid of printing rollers color screens for photographic 'Work the method which consists in first photographing on a'series of rollers, mechanically connected to each other, a series of lines of different colored images, each roller provided with a filter of different color, then developing said rollers and pro-- viding the same with a surface adaptable for printing purposes.

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

ISIDOR KITSEE.

topics this patent may be obtained for live cents each, by addressing the Commissioner of Iatentl, Washington, D. G.

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