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:
Oct. 10, 1978
Filed:
Feb. 22, 1977
Fuji Photo Film Co., Ltd., Minaniashigara, JP;
Abstract
An apparatus for monitoring photographic processing liquid composed of a timer to determine the length of time which has passed after the renewal of the processing liquid, a counter to determine the amount of the photographic film which has been already processed and an alarm light which is responsive to either timer or counter when having reached the respective predetermined position for lighting to indicate that the photographic processing liquid must be renewed. Thanks to the monitoring in terms of the 'effective length of time' of the processing liquid and of the total amount of the photographic film already processed, it is assured that the processing liquid is renewed before it has been exhausted and has lost the processing capability.