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Class 396/563 - SENSITOMETRY


Subclass of Class 396 - Photography
Definition: Subject matter relating to the determination of the sensitivity
No. of patents: 31
Last issue date: 03/11/2008


NumberTitleIssue Date
7343090Lens-fitted photo film unit
A lens-fitted photo film unit is preloaded with a roll of photo film whose film speed is ISO3200, and has a mode selection member that is manually operated to select one of a standard photography mode, an indoor photography mode and a night-view photography mode. In...
03/11/2008
7266994Measuring particulate in liquid storage tanks
This device provides for measuring the particulate content in a fluid storage tank. A sample of fluid is taken from a fluid storage tank; and compared to a field visual reference chart. Using this chart results in identifying tanks containing a maximum or average pa...
09/11/2007
7106964Light amount adjustment method for use in image exposure apparatus
A light amount adjustment method for use in an image exposure apparatus records an image by scanning a photosensitive material with a light beam modulated in accordance with image signal. The light beam has a first light amount level and a second light amount level ...
09/12/2006
6917758Method of image compensation for watermarked film
A method for obtaining an adjusted digital image which is compensated for a watermark exposure is described comprising: determining a first sensitometric response of a photographic media without a watermark exposure; determining a second sensitometric response of th...
07/12/2005
6901219Method and device for automatically calibrating a digitizer
The present invention is in the technical field of image digitizers or scanners. It relates to a method and device that enables the automatic calibration of digitizing equipment. The method and device of the invention enable the auto-calibration of a digitizing devi...
05/31/2005
6853438Test apparatus and method to check the exposure quality of exposed film
The invention relates to a test apparatus for the checking of the exposure quality of an exposed film, in particular of a motion film. A test pattern holder serves for the holding of a test pattern of the exposed film. A reference pattern with at least one reference...
02/08/2005
6849366Systems and methods for film processing quality control
A photographic film with a row of sprocket holes formed on each side thereof includes a sensitometric step wedge of different light intensity values exposed along one side of the film, preferably located between the sprocket holes. ...
02/01/2005
6833235Method for processing a black-and-white negative recording film material for motion picture soundtrack
A processing method has been provided for an exposed silver halide black-and-white negative working sound recording film element, said processing method comprising the steps of processing said sound recording film element in a processing apparatus providing processi...
12/21/2004
6829435Exposure system for obtaining a sensitometric control patch with exposure gradient
The present invention is in the field of photography and is used to measure the sensitometric characteristics of a photographic element, such as a photographic film strip. The present invention relates more particularly to an exposure system that enables the product...
12/07/2004
6810209Method to establish sensitometry curve for a photographic medium
The invention relates to a method to establish a sensitometry curve for a photographic medium, including the following steps: the formation on the medium of at least one sensitometry control by exposing many ranges of the medium with various exposure energies; the c...
10/26/2004
6222995Lens-fitted photo film unit, and method of making photo-print
A lens-fitted photo film unit can take indoor- and night-photographs at adequate tone- and color-reproductions, by satisfying the condition: -6ࣘ2log2 (A)+log2 (1/T)-log2 (0.3.multidot.S)ࣘ5 wherein T, A and S represents the ...
04/24/2001
6154272Control tool for and a method of calibrating a photographic processor and photographic printer
A control tool and method for calibrating a photographic printer and a photographic processor. The tool comprises an exposed unprocessed photographic filmstrip having a first image section for use in calibrating a photographic printer and a second image s...
11/28/2000
6035148Shuttering system for a sensitometer
A shuttering system for a sensitometer is taught which can be used both conventional and high speed exposures. The shuttering system includes a high speed rotating sector shutter, a rotating capping sector shutter, a mask and a sample transport all of whi...
03/07/2000
5930546Method for making a sinusoidal test object
A method for forming a test object containing a sinusoidal pattern corresponding to a specified exposure distribution function comprises: providing an exposed and processed intermediate photographic film containing a distorted sinusoidal pattern image hav...
07/27/1999
5664252Apparatus for use in optimizing photographic film developer apparatus
To provide a standard for determining an objective level of performance of photographic film developer processes, a production sensitometer, of the type commonly used in the field, is correlated with a high precision, master sensitometer, defined as a sta...
09/02/1997
5612903Process for obtaining balanced color prints
The color balance of color photographic printing paper is determined by making three successive exposures of separate portions of a sample sheet of printing paper through a neutral-color optical wedge of linear density gradient, each exposure consisting e...
03/18/1997
5543883Calibration of sensitometers
Sensitometers are used for monitoring photographic and radiographic processes, and then making it possible to control these processes. However, although it is relatively straightforward to obtain control strips for individual sensitometers, it is often di...
08/06/1996
5506656Method of and apparatus for measuring the optical density of a photographic negative
A method of and apparatus for measuring the optical density of an original, especially a three-color negative, from which photographic prints are made, to control how much printing light of each color penetrates the original when the image is projected on...
04/09/1996
5481480Process control for photographic processing apparatus
A method of controlling photographic processing apparatus when processing a given photographic material using the characteristic curve for that material, the characteristic curve being determined from a control strip of the photographic material, the cont...
01/02/1996
5400116Apparatus and method for producing gradated exposures on radiation sensitive material
A method and apparatus (10) referred to as a step and repeat sensitometer directs radiant energy (18) from a radiant energy source (16) into a diffuse integrating chamber (2) which uniformly mixes and directs the radiant energy (18) onto an exposure plane...
03/21/1995
5051762Production of images using an array of light emitting diodes
Apparatus and imaging method in which an LED exposure apparatus having an array of light emitting diodes stationed in a light exposing relationship to a photosensitive material to be imaged is calibrated to take into account the wavelength difference betw...
09/24/1991
4985320Processor chemistry control strip reader and replenishment system
A voltage set point system is employed to provide a constant illumination of a photographic test strip. The set voltage is used as the supply for a voltage divider comparator network for accurately determining exposed film density levels....
01/15/1991
4760447Calibration pattern and method for matching characteristics of video monitors and cameras
A calibration pattern (FIG. 2) is utilized to adjust the calibration of a video monitor (C) and a multi-format camera (D). The multi-format camera (D) includes a video display (12) and photographic equipment (20) internally therein such that received sign...
07/26/1988
4642276Method of assessing the activity of a photographic developer
A method and an apparatus wherein wedge print density value comparisons made with the aid of a photoelectric densitometer give indications of the developing activity of a photographic developer which are independent of the temperature of the photodetector...
02/10/1987
4618233Scanning wedge method for determining characteristics of a photoresist
A method and a system for determining the characteristics of a photoresist are disclosed. This scanning wedge method is accomplished by linearly varying the exposure dose the photoresist receives. Thereafter, the photoresist is developed. The location of ...
10/21/1986
4588298Step tablet
A step tablet with which an amount of exposure or degree of exhaustion of a developing solution can very readily been determined. The step chart is composed of a number of rectangular patches of photosensitive material, arranged in an order of sensitivity...
05/13/1986
4518234Method and apparatus for reproducing at least one colored surface
The method for reproducing at least one colored surface the color of which corresponds to a reference chosen from a color chart is characterized by the fact that during a first stage, there is recorded on a photographic emulsion of the same type a sensito...
05/21/1985
4491400Dual-color sensitometer
A dual-color photographic sensitometer for exposing a piece of test film to a known amount of light of a selectable one of two different colors. The multiple-step density gradient of the sensitometer is uniformly illuminated along its entire length by an ...
01/01/1985
4235537Method of testing photographic film using multicolor sensitometer
The sensitivity of photographic materials is measured by a device that generates a controlled exposure of light of predetermined color characteristics. Color control is maintained by subjecting an electroluminescent light source to excitation by alternati...
11/25/1980
4211558Color printing method
In a color printing method, a color photosensitive material is exposed in the photographing step to object illuminating light, which is recorded thereon as an optical density by photographic treatments. In the printing step, the optical density is detecte...
07/08/1980
4131349Low cost sensitometer which provides highly accurate readings
The present sensitometer has its light source energized, through a constant voltage transformer and is initially energized while being covered by a rotating sector shutter which does not permit the light source to send light to the material whose light se...
12/26/1978
 
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