Harry J Copeland, Age 7758 King Cir, Branson, MO 65616

2003011, Jun 26, 2003

Mar 27, 2002

10/107681

Harry Copeland - Springfield MO, US
Charles Kramer - Rochester NY, US
David Madoux - Tyler TX, US
William Streeter - Chesterfield MO, US

Western Litho Plate & Supply Co.

G03F007/00

430/302000

The durability of negative working lithographic plates is enhanced by post-exposure to a wavelength, or a range of wavelengths, effective to promote further addition polymerization and/or cross-linking reactions. Preferably, the electromagnetic energy used for post-exposure comprises a principal wave length not greater than 300 nanometers.

4752283, Jun 21, 1988

Feb 17, 1987

7/015663

Harry J. Copeland - Springfield MO
Edward H. Parker - Ballwin MO

Western Litho Plate & Supply Co. - St. Louis MO

B04B 1104
B04B 1300

494 37

A waste water cleaning system for use with apparatus for processing exposed lithographic plates, the processing apparatus receiving wash water for use in the processing. The cleaning system includes a centrifuge for removing contaminants from waste water from the processing apparatus, the centrifuge having an inlet for receiving waste water from the processing apparatus and an outlet for discharging the cleaned water. The cleaning system also includes means for carrying the waste water from the processing apparatus to the inlet. The cleaning system further includes control means for controlling the operation of the processing apparatus and the centrifuge. The control means includes means for starting the centrifuge and means for starting the flow of wash water into the processing apparatus a first predetermined time after the start of the centrifuge. The control system also includes means for stopping the flow of wash water into processing apparatus and means for stopping the centrifuge a second predetermined time after stopping the flow of wash water into the processing apparatus. Other forms of the invention including methods thereof are also disclosed.

4575233, Mar 11, 1986

Mar 11, 1985

6/710425

Harry J. Copeland - Springfield MO
John W. Powers - Battlefield MO

Western Litho Plate & Supply Co. - Springfield MO

G03B 2704
G03B 2720

355 85

An apparatus for exposing boards which are photosensitive on both sides, for production of printed circuits on both sides, to light through films on both sides in which a lower film, a board, and an upper film in registered position on a light-transmitting platen are pressed down by a window and exposed to light on both sides through the platen and window. A pair of registration pins are adjustably positioned in spaced relation along an edge of the platen and corresponding holes in the boards are used to align the boards and films for exposure. The pins are spaced as widely apart as possible to provide maximum registration between boards of varying sizes and films.

4614425, Sep 30, 1986

Apr 20, 1984

6/602337

Harry J. Copeland - Springfield MO
John W. Powers - Battlefield MO

Western Litho Plate & Supply Co. - St. Louis MO

G03B 2704

355 99

A method of and apparatus for exposing boards which are photosensitive on both sides, for production of printed circuits on both sides, to light through films on both sides in which a lower film, a board, and an upper film in registered position on a light-transmitting platen are pressed down by a window and exposed to light on both sides through the platen and window, the window, gripping the upper film, is raised, the exposed board is removed, another board to be exposed is applied to the lower film on the platen, the window is lowered to apply the upper film to the new board, and the procedure repeated.