Abstract:
A system for calibrating a spectrophotometer includes a spectrophotometer, including a network communication interface, operating in a plurality of modes and producing and implementing diagnostic information. A network communicates with the spectrophotometer via the network communication interface. A remote processor is enabled to communicate with the spectrophotometer directly via the network communication interface. Alternatively, a spectrophotometer having a thin client is disclosed that can operate independently of a local PC.
Abstract:
A dyeing machine (10) includes a beaker (12) and a carrier (36) within the beaker (12). The carrier (36) includes perforations (42) and supports a sample (50). A pump assembly including a fluid pump (20), impeller (22), drive shaft (24), magnetic flange (14) and flow guide leement (26), circulates a processing solution (30) to a first side (44) of the carrier (36). The processing solution (30) passes through the perforations (42) for dyeing the sample from the inside-out.
Abstract:
A reflected color simulator is disclosed which utilizes a plurality of color discs positioned adjacent to one another wherein each disc includes several individual sections which are interleaved with respect to the other color discs such that rotational movement of the discs with respect to one another will vary the percentage of color from each disc which contributes to the color displayed when the discs are spun together. The entire group of discs, which could be of any number but preferably 6 or 7, are rotated by a main drive device to mix the colors so exposed to form the desired color by reflected simulation. An observer when viewing the spinning group of color discs will see a reflected color which is determined by the exposed percentages of each color disc. Each of the color discs preferably is of a different color and individual control of rotation of each disc is achieved in a remote fashion in order to allow independent rotation of the discs even during simultaneous rotation of all the discs to simulate the reflected colors. This remote control is achieved by including a plurality of drums oriented concentrically about the main drive shaft wherein each drum is fixedly secured at the forward end to one of the color discs such that rotation of one of the drums causes a relative rotation of one of the color discs with respect to the others.
Abstract:
The apparatus includes a plurality of colorant reservoirs passing colorants and other ingredients through feed lines to a peristaltic pump which pumps the colorants into the input of three-way valves which are each movable between a dispensing mode and a recirculating made. In the recirculating mode the colorants pumped by the peristaltic pump will travel through the three-way valves and through return lines to the reservoirs from which the material originally emanated. If the three-way valve is in the dispensing mode the colorant will be discharged into a sample container for receiving the colorant mix. The peristaltic pump is driven by a drive motor such as a variable drive DC motor. The system is controlled by a system controller which receives input from a device such as a microprocessor which evaluates the required volume or weight of each particular colorant necessary to make a specific colorant mix. In order to carefully dispense such low volume of fluids the output curve of the peristaltic pump is divided into known segments and evaluated by the microprocessor input device and a segment of the output curve is utilized which positively displaces a known volume and is very repeatable. A position sensing device located adjacent to the pump emits a signal to the control whenever one of the rollers passes thereby. A counting device is positioned adjacent to the drive shaft of the drive motor and emits counts during rotation of the shaft.
Abstract:
A colorimeter capable of calibrating color monitors, is provided by a photometric array of photodetectors (38) and opticlal filter pairs (50). The filters include long-pass, edge filters which cover overlapping regions at t he upper end of the visible spectrum and a filter which covers the entire visib le spectrum. The outputs of the photodetectors are digitally synthesized to provide a response which mimics the response established by the Commission Internationale de l'Eclairage (CIE) xyz (bar) functions almost perfectly. Th e response which is mimicked may be represented by the CIE color matching functions. The pairs and the associated components are mounted on a printed circuit board (32) captured in a clamshell housing and having an array of apertures which define angularly constrained fields of view of a surface fro m which the light emanates.
Abstract:
The method is used for communicating colour information and formulating colorants to match a given colour where a given colour definition system defining a colour when viewed in a specific light defines input colour information. A set of differently coloured discs may be additively mixed on being spun and blended according to the Maxwell disc principle. Formulation includes computing those combinations and subcombinations of the set which give the same values within the definition system as the input colour. The combinations, weighted according to the proportions of each disc showing in each combination, are averaged to determine a composite combination which, when used to generate a colour, will render one which minimises metamerism when matched with dyes. The composite combination converted directly into spectral reflectances provides input to a standard colour matching system. A colour is matched by combination of a plurality of dyes on file in the matching system, data on each being included in the system, to provide a matching sample. This can be corrected if necessary.
Abstract:
A reflected color simulator is disclosed which utilizes a plurality of color discs positioned adjacent to one another wherein each disc includes several individual sections which are interleaved with respect to the other color discs such that rotational movement of the discs with respect to one another will vary the percentage of color from each disc which contributes to the color displayed when the discs are spun together. The entire group of discs, which could be of any number but preferably 6 or 7, are rotated by a main drive device to mix the colors so exposed to form the desired color by reflected simulation. An observer when viewing the spinning group of color discs will see a reflected color which is determined by the exposed percentages of each color disc. Each of the color discs preferably is of a different color and individual control of rotation of each disc is achieved in a remote fashion in order to allow independent rotation of the discs even during simultaneous rotation of all the discs to simulate the reflected colors. This remote control is achieved by including a plurality of drums oriented concentrically about the main drive shaft wherein each drum is fixedly secured at the forward end to one of the color discs such that rotation of one of the drums causes a relative rotation of one of the color discs with respect to the others.