The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
May. 30, 1978
Filed:
May. 25, 1976
Herbert Schroter, Taunusstein, DT;
Hoechst Aktiengesellschaft, , DT;
Abstract
In a photoprinting machine including a developing chamber in which a web of exposed diazotype paper continuously fed at an adjustable speed is developed with a developer medium composed of a vaporous ammonia/water mixture, an after-treating chamber following next in the direction of feed of the diazotype paper and which is connected with a device for removing ammonia-containing exhaust air, and a device for expelling developer medium from the developed diazotype paper. The expelling device includes a high energy infrared radiator positioned opposite the web in the after-treating chamber, a connection between the high-energy infrared radiator and an output of a heat output control device, and an input for the heat control device connected to a transmitter of the feed speed. The heat output control device having a characteristic such that the heat output of the high-energy infrared radiator is proportional to the feed speed and the color temperature of the high-energy infrared radiator is about 2000.degree. K at the maximum feed speed of the diazotype paper.