from SC 13D/A 1 page <page> Exhibit 1 Joint Filing Agreement Pursuant to and in Accordance With Rule 13d-1(k)(1) Under the Securities Exchange Act of 1934, the Undersigned Hereby Agree to Jointly File the Schedule 13d/a Dated July 19, 2001 and Any Amendments Thereto With Respect to the Beneficial Ownership by Each of the Undersigned of Shares of Common Stock of Impax Laboratories, Inc. Such Joint Filings May Be Executed by One or More of US on Behalf of Each of the Undersigned. This Agreement May Be Executed in Any Number of Counterparts, Each of Which Shall Be Deemed an Original. Dated: July 19, 2001 Fleming US Discovery Fund III, L.P. By: Fleming US Discovery Partners, L.P., Its General Partner By: Fleming US Discovery, LLC, Its General Partner By: /S/ Robert L. Burr Robert L. Burr, Member Fleming US Discovery Offshore Fund III, L.P. By: Fleming US Discovery Partners, L.P, Its General Partner By: Fleming US Discovery, LLC, Its General Partner By: /S/ Robert L. Burr Robert L. Burr, Member Fleming US Discovery Partners, L.P. By: Fleming US Discovery, LLC, Its General Partner By: /S/ Robert L. Burr Robert L. Burr, Member Fleming US Discovery, LLC By: /S/ Robert L. Burr Robert L. Burr, Member Robert Fleming Inc. By: /S/ Christopher M.V. Jones Christopher M.V. Jones, Director J.P. Morgan Chase & Co. By: /S/ Susan S. Spagnola Susan S. Spagnola, Assistant Corporate Secretary

from SC 13D/A ~20 pages Plan of reorganization, merger, acquisition or similar

from SC 13D/A ~20 pages Indenture or similar