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| Number | Title | Issue Date |
| 4046474 | Black-body wafer support fixture for exposure of photoresist Photoresist coated transparent structures are supported in a black body (reflectionless) holder during activating exposure of the photoresist. When the photoresist coated structure is positioned in the holder, there is no reflecting surface close enough t... | 09/06/1977 |
| 4043660 | Device for correcting positive film for photocomposition A device for correcting positive film for photocomposition using a photographic method which comprises first projecting an original film onto a final film with the defective area rendered unexposed, then projecting the correct replacement material onto th... | 08/23/1977 |
| 4040733 | Variable magnification slitwise exposure process and apparatus therefor for use with electrophotographic copying machine The exposure process and apparatus are for use with electrophotographic copying machines of the type in which a photosensitive surface is moved at a constant rate at any magnification selected. Upon changing from a magnification of unity to a magnificatio... | 08/09/1977 |
| 4039258 | Method and apparatus for making reproductions of photograhic copy negatives or the like Prints of film frames forming part of relatively short film strips are made by attaching to each film strip a tab, inserting the strip and the tab into an envelope which bears information denoting the order number, the number of prints to be made, the typ... | 08/02/1977 |
| 4037956 | Verified mail system Apparatus, means, and method for a verified mail system comprising copying devices for making copies of mail contents, a central depository for storage of the copied mail contents, a system for retrieval of copied mail contents and the reproduction of mai... | 07/26/1977 |
| 4035078 | Method and apparatus for increasing contrast and resolution from low density film Photograph film negatives with specular densities so low that they are not usable with transmitted light, e.g., densities below 0.3, may be used with substantially increased contrast and resolution when illuminated with a beam of light which is scattered ... | 07/12/1977 |
| 4026653 | Proximity printing method A predetermined small spacing or gap between a semiconductor wafer and a mask is defined by projecting a cushion of air through a central mask aperture toward the wafer. The wafer is supported on a sponge rubber member which is designed, along with the ai... | 05/31/1977 |
| 4025190 | Exposure control system for photographic copying An exposure control for automatically controlling the duration of the exposure time for a photographic material to be printed. The light intensity is sensed by a sensor which could be either of the photoresistive or the photovoltaic type. A range control ... | 05/24/1977 |
| 4018528 | Photomechanical color printing registration The invention provides a method of facilitating registration in photomechanical color printing which comprises the steps of 1. providing a set of color separations with registration holes or slots or notches avoiding the image area, 2. mounting one of the colo... | 04/19/1977 |
| 4018525 | Instant image film camera with inspection station A microfilm camera using an instant image film, such as a vesicular film, is herein disclosed. Instant developing stations and an associated read-out optical system are positioned in the path followed by the film as it travels through the camera. After th... | 04/19/1977 |
| 4015902 | Illumination system for continuous path enlarger In a continuous path enlarger having an illumination system for illuminating a very wide continuously moving original and projecting the image thereof onto a much wider sheet of light sensitive recording material moving synchronously with the original, th... | 04/05/1977 |
| 4008962 | Color printing method Apparatus and method for making full color prints of a multicolor graphic original. The prints can be duplicates of the original or can be prints having colors for the various colors appearing in the original that have been synthesized to provide prints w... | 02/22/1977 |
| 4003652 | Shutter-opening presetting mechanism for motion picture copying apparatus Variation in the width of the shutter opening in a motion picture film copying machine is rapidly effected to control the amount of light passed through the shutter for transmission of the image from the master film onto the blank sensitized film running ... | 01/18/1977 |
| 4003653 | Method of producing color slides from black and white originals In the method of producing color slides from black and white originals, a light box, a glass plate and a camera are used. Also utilized is a positive and negative of a black and white original. In the first step, a film frame in the camera is exposed to t... | 01/18/1977 |
| 3998545 | Anamorphic enlarging system The enlarging system includes a projection housing for receiving a negative film insert device supporting an anamorphic negative film image which is projected towards a working surface. Below the insert device is a projection lens, lens adapter, anamorphi... | 12/21/1976 |
| 3984185 | Process and apparatus for filter value and exposure time determination in photographic color printing and enlarging Three measuring channels in a photographic color printing and enlarging apparatus are utilized for determining the filter values of the primary colors. The exposure time is determined by adjusting and reading the amplification factor of an amplifier which... | 10/05/1976 |
| 3984184 | Method and apparatus for determining the sharpness of images The variation in transparency along the surface of an original is detected and a corresponding transparency-indicating signal is generated. The spectral components of the transparency-indicating signal having frequencies above a predetermined frequency as... | 10/05/1976 |
| 3981580 | Method and a system for concurrently copying both sides of an original A method and a system are provided for concurrently copying both sides of an original by concurrently scanning nonoverlapping areas of the two sides of the original with two incident beams and scanning adjacent areas of a copy with the resulting reflected... | 09/21/1976 |
| 3967897 | Apparatus and method for evaluating color negatives An apparatus for color negative evaluation for use with a photo enlarger comprised of a filter and lens matrix board, and a frame for supporting the filter matrix and lens boards intermediate the photo enlarger holding the color negative being evaluated a... | 07/06/1976 |
| 3961850 | Optical index and method for cameras and film processing A small miniature camera employs as a primary operating mechanism a spring biased shutter bellcrank which is arranged so one of its arms or pawls operates a pivoted shutter blade and cooperates with the other pawl to conrol the film advance mechanism to p... | 06/08/1976 |
| 3961956 | Method for production of and distinction between combined validification and identification photographs A method production of a composite photograph containing at least two images, i.e. a mark image and a holder image, and a method for distinguishing images in said composite photograph, said photograph being composed of alternate strips containing elements... | 06/08/1976 |
| 3960634 | Method of making records A master sheet bears on its face permanent indicia identifying a doctor and a patient, and an extension sheet has provision for recording service performed by a doctor for a patient. This extension sheet is adhesively united to said master sheet below sai... | 06/01/1976 |
| 3950093 | Method and apparatus for printing coloured originals A light source of adjustable colour is provided, primarily for use in apparatus for printing coloured originals. The invention is primarily useful in printing photographs. According to one aspect of the invention there is provided a light source of adjust... | 04/13/1976 |
| 3947118 | Method of photographing a plurality of cards An apparatus for filming a plurality of index or library cards is disclosed which feeds, spaces and photographs the individual cards automatically. The apparatus is provided with a means for sensing the height of cards in a stack, adjusting the height of ... | 03/30/1976 |
| 3944363 | Focusing device and method of use thereof for photographic enlarger The present invention is an optical aid especially applicative as a focuser for use with photographic enlargers. The structure of the device makes it possible to focus at any point on the projected image at the easel surface. The focuser can be hand held ... | 03/16/1976 |
