ES278928A1 - Photograph of time control for photographic and analogue extension (Machine-translation by Google Translate, not legally binding)
- Google Patents
Photograph of time control for photographic and analogue extension (Machine-translation by Google Translate, not legally binding)
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
HERRERA SAMBOLA ANTONIO/MERCE ESTEVE JAIME
Original Assignee
HERRERA SAMBOLA ANTONIO/MERCE ESTEVE JAIME
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Photographic Processing Devices Using Wet Methods
(AREA)
Abstract
Photometer with time control for photographic and analogous enlargement, which is essentially characterized by being constituted by two electrical units duly linked to each other, of which one acts as a photosensitive element while the other is formed by a circuit in which there is a measuring system and an adjustable chronometric device, the first of said units comprising a box provided, on one of its sides, with a transparent plate covered by a translucent sheet, there being in the same box a photocell that is located, centered on to the field of the translucent sheet exposed to the corresponding light beam of the enlarger, it being provided that said photo: receiving surface is more or less covered by squares, margins or appliquºs that cut and reduce the field to be illuminated, in which case the photocell will also come to occupy the geometrical center of the latter. (Machine-translation by Google Translate, not legally binding)
ES0278928A1962-06-271962-06-27Photograph of time control for photographic and analogue extension (Machine-translation by Google Translate, not legally binding)
ExpiredES278928A1
(en)
Procedure and device for the continuous evaluation of paste quality and/or polishing of a transparent sheet (Machine-translation by Google Translate, not legally binding)
A light responsive component, a photoelectric light measurement device incorporatingthe same and a process for the manufacture of such a light responsive component
A device for calculating the exposure of photographic enlargements and the degree of contrast of paper to be used for them by a two-light corporation (Machine-translation by Google Translate, not legally binding)
A perfect optical apparatus for the projection of images in normal direction to the object (Machine-translation by Google Translate, not legally binding)