US2487542A - Registration frame - Google Patents

Description

Nam 8;, 194% 6") b: R. M. HAFF a lia REGI STRATION FRAME Original Filed July 18, 1944 Fa G. 3.

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By o 1 Patented Nov. 8, 1949 2,487,542 REGISTRATION FRAME Richard M. Haff, Binghamton, N. Y., assignor to General Aniline & Film Corporation, New York, N. Y., a corporation of Delaware Original application July 18, 1944, Serial No.

Divided and this application October 10, 1945, Serial No. 621,452

3 Claims.

This application pertains to a registration frame for perforating negatives or other photographic transparencies after they have been brought into registration and prior to printing them. The case is a division of copending application Serial No. 545,447, filed July 18, 1944 now Patent 2,418,226, granted April 1, 1947, to R. M. Haff.

Extreme accuracy is required when printing from color separation negatives, and that is especially true when projection printing methods are employed. The greater the scale of enlargement, the more inaccuracies in registration or printing are magnified. Accordingly, it is a general purpose of the device herein described and claimed to provide for accurate registration of negatives to be printed and perforation of these negatives so that they may be separately handled in the subsequent printing.

Enlarging in color work differs from the same process as applied to black and white photography in that a plurality of negatives known as color separation negatives must be independently projected on to the enlarging paper,-for example, any suitable color paper. In most all instances, at least three such negatives must be made and separately projected, each with its own particular color of light.

For accomplishing that purpose in the typical projection printer or enlarger now available, the invention of the instant case provides a simple registration and perforating frame such as may be easily employed by those reasonably skilled in photographic work and which is especially adapted to use with smaller negatives such as are more likely to be involved if enlarging is to be done rather than contact printing.

The invention is described herein by reference to a specific embodiment of the same as illustrated in the accompanying figures of drawing wherein:

Fig. 1 is an isometric View of the base member of the registration frame.

Fig, 2 is an isometric view of the cooperating cover member.

Fig. 3 is a detail of one type of punch employed with the frame.

Fig. 4 is a detail of another punch adapted to making a circular hole rather than an elongated hole as with the punch shown in Fig. 3.

Now referring to the Figs. 1 and 2, the registration frame consists of two cooperating parts each having a transparent or translucent window between which the negative or negatives to be punched or registered are clamped and by means of which light projected from the opposite side of' the frame and negatives will serve to illuminate them so that the images thereon may be brought into accurate registration. The frame includes, among other parts, a base H3 at the upper side of which is inserted a window it retained by meansfof the clips I2 and IS. The window preferably is set so that its top surface projects slightly above the surface of the frame itself, and the clips I 2 and I3 engage within beveled notches so that they are entirely beneath the top surface of the window.

The cover member includes a frame l4 in which a window 55 similar to the window it is set, said window projecting below the lower surface of frame [4 and being retained in the same or another convenient manner. The projection of the windows slightly above and below the frame'surfaces is for the purpose to assure good contact with the film material inserted therebetween. Frame M has at each corner, or at least at two spaced points, dowel pins 15 which are accurately engageable within the holes I 7 in frame i0. These pins assure accurate positioning of the cover member over the base member after each removal of the same and also assure accurate registration of the punch guiding openings and the cooperating die openings in the base. The cover is held in position above the base or may be drawn down for clamping a negative or negatives between the windows H and l5 by means of two screws 18 and I9, each of which has a knurled head and a collar, the latter being indicated by numerals 20 and 2|. These screws engage within tapped holes 22 and in the base and may serve to hold the cover slightly raised from the base during manipulation of the negatives to bring them into registration, or may serve to draw the cover down for temporarily clamping the negatives in position while the perforations are punched in them. Spring clips 24 and 25 engage beneath the knurled heads of the screws but above the collars 28 and 2t, and thereby retain them in proper position for effecting either of the abovernentioned results.

The frame M of the cover member is slotted or apertured at 26 so that edges of the negatives may be reached for moving them in the appropriate direction while effecting their registration. The cover member actually acts as a template by means of which the punches are positioned. For that purpose a circular opening 2'! at one corner and an elongated opening 28 at the opposite corner align with similar die open- It is to be assumed that color separation negatives have been made according to some one of the accepted methods. These negatives may or may not have indexing or registration marks thereon, and, accordingly, registration will be effected by bringing the marks into coincidence or by bringing the images into proper registration.

One of the negatives is first placed on the glass plate I l and should be taped in position by using some thin, transparent type of adhesive tape. The cover is then placed over the base member of the registering frame, clamped down by using the screws [8 and i9, and that negative then perforated using the punches 3! and 33. The cover is then raised away from the base member and a second negative superimposed upon the first. The cover member should be held away from contact with the negatives, or at least, should not interfere with the manipulation of the second nega tive so long as it is being moved to effect registration. The openings 26 faciiltate this function, and pointed instruments of any convenient type may be used therethrough to engage the second negative and move it into registry with the first negative. When the image on the second negative is brought into exact coincidence with that on the first, the cover is again clamped in position to retain that registration and the second negative may then be perforated.

The second negative is then removed and the third treated in like manner, and this is continued with as many negatives as are to be printed for that particular picture. When completed, they are laid aside and properly marked or arranged so as to be printed in predetermined sequence and with the appropriate color of light for each. During the registration, the frame should be illuminated from the under side of the window I i and, if desired, magnifying means may be employed to effect greater accuracy. Magnifying means is also desirable for eliminating errors due to parallax.

While one embodiment of the invention has been disclosed, it is to be understood that the inventive concept may be carried out in a number of ways. This application is thereby not to be limited to the precise details described but is intended to cover all variations and modifications thereof falling within the spirit of the invention and the scope of the claims.

I claim:

1. A registration frame for photographic negatives including a base and a cover member, a translucent window in each, positioning means by which said cover may be superimposed in a definite position over the base member, means for holding the cover slightly above or for clamping it against the base, punch guiding openings and. die openings in alignment therewith, the former in the cover and the latter in the base, and a punching means for insertion in said openings, said means including at le ast one circular punch and one elongated punch.

2. A registration frame for photographic negatives including a base and a cover member, a translucent window in each, positioning means by which said cover may be superimposed in a definite position over the base member, means for holding the cover slightly above or for clamping it against the base including tapped holes in the base and cooperating threaded elements retained by the cover, said threaded elements having a knurled head and an annular collar between which engages a positioning clip, punch guiding and die openings in said cover and base, and punch means for insertion in said openings.

3. A registration frame for photographic negatives including a base and a cover member, a translucent window in each, means including dowel pins in one member and cooperating openings in the other member by which said cover may be superimposed in a definite position over the base member, means for holding the cover slightly above or for clamping it against the base, which means comprises tapped openings in the base and cooperating screws held against axial movement within clips in the cover, punch guiding openings in the cover and die openings in alignment therewith in the base, and punching means for insertion in said openings, said punching means including at least one circular punch and another punch of elongated cross section.

RICHARD M. HAFF.

REFERENCES CITED The following references are of record in the file of this patent:

UNITED STATES PATENTS Number Name Date 2,011,584 Lengel Aug. 20, 1935 2,027,524 Fankboner Jan. 14, 1936 2,068,037 Osborn Jan. 19, 1937

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