Abstract: Gum solutions are formulated to protect a negative-working photopolymer imaging layer coated on an anodized aluminum substrate that has undergone a post-anodic sealing treatment with inorganic phosphate and inorganic fluoride, followed by development. In various embodiments, the developer and gum solution have different compositions but contain at least one polycarboxylic acid—which may be a polymer—that beneficially desensitizes the surface after the unexposed photopolymer layer is removed.

Abstract: A new and improved toilet seat deodorizer apparatus includes a flexible, resilient air pump assembly shaped substantially in the form of a toilet seat, a connector assembly for connecting the air pump assembly to a toilet bowl, and an odor dispenser assembly connected to the air pump assembly. The odor dispenser assembly includes a first screened end in direct communication with air contained within the flexible, resilient air pump assembly and includes a second screened end in direct communication with air which is outside the air pump assembly and the odor dispenser assembly. When a person sits upon the flexible, resilient air pump assembly, a quantity of air is pumped from inside the air pump assembly, through the odor dispenser assembly, to outside the odor dispenser assembly to room air in the room in which the toilet is located. Rigid support members are connected to the flexible, resilient air pump assembly for supporting the air pump assembly a predetermined spaced distance from the toilet bowl.