The Egoltronics 1010 is a large format dodging
enlarger with electronically selected automatic exposure and dodging control and
optional computer controlled autofocus. Aerial negatives up to 10 x 10 inches
(25 x 25cm) can be enlarged up to 4.5x with the 300mm lens provided; smaller
formats can be enlarged up to 12.5x with a 135mm lens. A motorized roll film
transport is available as an option. The 1010 is available in the following
models: Autofocus (1010AE), Tip/Tilt (1010 T/T), Manual (1010DM), and Horizontal
(1010AH)-all features the unique MultiDodge control system.
1010 enlargers are constructed of rugged, solid machined base and column
sub-assemblies, providing a stable, vibration-resistant enlarging structure. The
motorized easel (1010 AE, and 1010 T/T) runs on chrome runners and roller
bearings, are positioned manually or by servo motors under computer control. The
easel is topped with a low-gloss white surface of steel, permitting simplified
focusing and uncomplicated raw-stock hold-down with ceramic magnets.
The light source is a cathode ray tube (CRT), manufactured to the unique
requirements of a high-speed, high-power dodging enlarger. Modulation of the CRT
is provided simultaneously in two forms: 1.) The instantaneous faceplate power
of the CRT electron beam is varied, producing a change of phosphor luminance;
this change, commonly called intensity modulation, provides the most rapid
exposures of high-intensity transparencies. 2.) The instantaneous rate-of-change
of electron beam position: this method, commonly called velocity modulation,
produces the most rapid exposures of low-density negatives. The combination of
these two forms of CRT modulation produces the fastest exposures possible with
greater control over an extended range.
The control system for the photographic density compensation function is
Egoltronics MultiDodge. This device, in conjunction with the CRT and the photo
sensing system, monitors local densities on the original transparencies and
produces the modulation signals utilized by the CRT. In addition, the MultiDodge
generates a prescan operation-an assessment cycle-during which it determines the
amount of dodging required, if any, and the correct mid-tone exposure setting.