Automatic toning device
AssigneeE. I. Du Pont de Nemours and Company
InventorHerbert Albert Tobias
Life of this patent
Estimating the term…
Abstract
Apparatus is described for applying particulate material to an image-wise tacky surface. The particulate material or toner is dispensed from a hopper having a side wall vibrating laterally of the direction of movement of the surface. The tacky surface is then moved under an applicator which has a brush pad oscillating laterally of the direction of movement of the surface to embed the particulate material in the surface. Finally, the tacky surface is passed under a cleaner which has an agitating surface oscillating laterally of the direction of movement of the surface. A perforated plate is placed under both the cleaner and the applicator to aid in removing excess toner therefrom following use.
Claims20
In apparatus for uniformly developing an image defining tacky surface with particulate material, said apparatus having a dispenser for dispensing said particulate material above said surface, an applicator for embedding said particulate matter in said surface, a cleaner for removing excess particulate matter from said surface, and means for moving said tacky surface in a first sense past said dispenser, said applicator, and said cleaner, the improvement wherein:
- said dispenser includes a hopper having an independently movable side wall, and
- first means to oscillate said side wall laterally of said first sense, thereby to supply said particulate material to said surface at a uniform, controlled rate.
In apparatus for uniformly developing an image defining tacky surface with particulate material adherent to said surface, said apparatus having a dispenser for dispensing said particulate material above said surface, an applicator for embedding said particulate material in said surface, a cleaner for removing excess particulate material from said surface, and means for moving said tacky surface in a first sense past said dispenser, said applicator, and said cleaner, the improvement wherein:
- said applicator comprises a horizontally disposed agitating surface, and
- means for oscillating said applicator agitating surface laterally of said first sense.
Dependencies are inferred from the claim text.