Mettler-toledo Ag

Gretag Imaging Ag

Gretag Imaging Trading Ag

Hansjörg Rotach

Roger Leisinger

Beat Frick

Paul Lüchinger

Mathias Lehmann

Eduard Fringeli

Jean-Christophe Emery

Martin Heller

Willy Koch

Heiner Schaub

Peter Kobel

Georg Von Tobel

A draft protection device for a balance, which encloses a weighing compartment surrounding a weighing pan, has at least one opening that can be closed by a window. The at least one window has at least two slidable window sections which partially overlap each other in any of their positions. According to the invention, a drive mechanism is provided for the opening and closing of the window, which drive mechanism couples the window sections to each other in such a way that all of the window sections move simultaneously and at different speeds during the opening and closing, wherein a fixed ratio between the respective speeds of the window sections can be predetermined by design.

Draft protection device for a balance

A balance () has a draft protection device () that encloses a weighing compartment surrounding the weighing pan (). A rear wall () delimiting the weighing compartment on one side is made of a material () that diffuses the transmitted ambient light. The translucent, light-diffusing material () is in particular a frosted glass.

Balance with a draft protection device

Disclosed is a photographic capturing device for the capturing of photographic image information from photographic media with a light source, with a stage for the photographic medium to preset a reference position for the projection of the photographic medium by way of a projection optics onto a detection element which detects the light originating from the light source and modulated by the photographic medium according to the image information, whereby a sample carrier with a sample is provided for the control of the focus of the projected image, and a positioning mechanism which removably places the sample carrier at the reference position for projecting the sample onto the detection element by way of the projection optics.

Photographic scanner with focus control

The photographic copying apparatus comprises a first exposure arrangement for exposure of photographic negative and positive copy masters and a second exposure arrangement for exposure of screen copy masters onto photographic copy material. The second exposure arrangement includes a cathode ray tube with control system. The cathode ray tube is arranged at approximately a right angle with respect to the exposure light path of the first exposure arrangement. The second exposure arrangement further comprises a color filter assembly, an objective and a mirror for directing the screen copy master emitted by the cathode ray tube to the photographic copy material. The color filter assembly, the objective and the mirror are combined as a structural unit to constitute an imaging optical system, which can be positioned into the exposure light path instead of an reproduction objective of the first exposure arrangement.

Photographic copying apparatus

Growing community of inventors

Effretikon, Switzerland

Hansjörg Rotach