Abstract: The present invention generally refers to a dispenser for a liquid medium consisting of two components. The dispenser in particular comprises two accomodation compartments for two different components of the material to be dispensed. Each of the accomodation compartments has an outlet and a mixer connected thereto. The mixer is manually adjustable by an adjuster and changes the ratio of the supplied components of the medium. Finally, the dispenser comprises a dispenser nozzle for the medium to be dispensed, which is connected to the mixer.

Abstract: An image analyzer (10) for adjusting a printer comprises a video image converter device (19).In order to facilitate the adjustment of the color composition of the exposure light emitted by an exposure means (2) of the printer (1), the image analyzer (10) is provided with a means (21) for adapting the spectral sensitivity curve of the video image converter device (19) to that of the photographic material as well as with a white balance control circuit, which is connected to said video image converter device (19) and which is used for producing color component signals for at least two color components of the exposure light emitted by the exposure means (2) of the printer.

Abstract: An apparatus for determining a color filter value, which is to be used for a specific original for exposing a gradation change paper, comprises a recording device (16), an inverting circuit (17) and a monitor (18), which operates in a black-and-white mode of operation, as well as an electronic contrast control device used for said monitor (18) and calibrated such that each adjustment value of the electronic contrast control device has associated therewith a color filter value which relates to a color filter (8, 29) to be used upon exposing the gradation change paper and on the basis of which a contrast of the print corresponding to that of the image on the monitor will be achieved.