Multi-purpose modification for lithographic plate-maker
OwnerFrank E. Schochetinventor
Life of this patent
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Abstract
An accessory for a photolithographic plate making machine including a developer tray positioned to divert a light sensitive medium from passage into the usual processor of the machine, a fixing tank to be substituted for the print catcher of the machine, and a timing hood for completing the light shielding of the developer tray and affording manual access to the tray and the tank. The hood further includes an indicator especially convenient for timing two events which are to occur in succession.
Claims1
In an automatic photolithographic machine in which an exposed photolithographic medium is normally transferred automatically from a magazine through an actinically closed chamber including a succession of containers for activating and fixing solutions, to an actinicially unshielded manual access discharge location, the improvement which comprises:
- first container means at least partially enclosed in said chamber and removably interposed between the magazine and the containers to prevent normal passage of the medium to said containers and to receive the medium in a first chemical bath in manually accessible fashion;
- second container means removably positioned in said discharge location for receiving the medium in a second chemical bath when manually transferred from said first container means;
- and
- means mounted on said machine over said discharge location and the portion of said first container means not enclosed in said chamber, to prevent actinic light from reaching said first container means, while affording manual access to both said container means.
Dependencies are inferred from the claim text.