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Title: US5217832: Permanent color transparencies on single substrates and methods for making the same
[ Derwent Title ]

Country: US United States of America

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8 pages

Inventor: Joslin, Robert W.; Burbank, CA
Nelson, Kathleen L.; Pasadena, CA

Assignee: The Walt Disney Company, Burbank, CA
other patents from WALT DISNEY COMPANY (617665) (approx. 101)
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Published / Filed: 1993-06-08 / 1992-01-23

Application Number: US1992000824670

IPC Code: Advanced: G03F 7/00;
Core: more...
IPC-7: G03F 7/00;

U.S. Class: Current: 430/007; 359/590; 430/015; 430/290; 430/293; 430/321; 430/323; 430/324; 430/325; 430/329;
Original: 430/007; 430/321; 430/015; 430/290; 430/293; 430/323; 430/324; 430/325; 430/329; 359/590;

Field of Search: 430/321,7,15,21,290,293,323,324,364,394,325,329 427/162,166 359/590

Priority Number:
1992-01-23  US1992000824670

Abstract: Color transparencies having more than one imaged dichroic filter, and an imaged neutral density filter, layered on one side of a single glass substrate, and processes for making the same, are disclosed. In one embodiment, the color transparency is produced by a deposition process including the steps of coating a glass substrate with a photoresist and developing an image thereupon, depositing alternating layers of high and low refractive index dielectrics to form a dichroic layer of a primary subtractive color, stripping the photoresist from the glass, preparing at least one additional imaged dichroic filter on the first, and preparing a neutral density filter on the substrate on the side having the layered dichroic filters. A red antihalation coating may be applied to the lower surface of the glass substrate prior to exposing the photoresist to prevent undesirable exposure of additional portions of the photoresist layer. In an alternative embodiment, an etching process is utilized whereby stop-etch layers are deposited between each layer of the color transparency. The stop-etch layers prevent image distortion and uneven coloring during the etching process such that a high resolution color transparency is produced.

Attorney, Agent or Firm: Pretty, Schroeder, Brueggemann & Clark ;

Primary / Asst. Examiners: Bowers, Jr., Charles L.; McPherson, John A.

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First Claim:
Show all 16 claims
We claim:     1. A process for preparing a color transparency having a single substrate comprising:
  • coating a glass substrate on one surface with a photoresist;
  • developing an image on the photoresist;
  • depositing alternating layers of high and low refractive index dielectrics on the imaged photoresist to create a dichroic filter of a desired color;
  • stripping the photoresist from the glass substrate whereby a first imaged dichroic filter layer is produced;
  • preparing at least one additional imaged dichroic filter layer in the same manner as the first; and
  • preparing an imaged neutral density filter on the side of the substrate having the dichroic filters, the neutral density filter being prepared in the same manner as for the imaged dichroic filters with the exception that only a single layer of metal is deposited on the imaged photoresist rather than alternating layers of high and low refractive index dielectrics.

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Forward References: Show 7 U.S. patent(s) that reference this one

U.S. References: Go to Result Set: All U.S. references   |  Forward references (7)   |   Backward references (13)   |   Citation Link

Patent  Pub.Date  Inventor Assignee   Title
Get PDF - 10pp US3914464  1975-10 Thomasson et al.  Optical Coating Laboratory, Inc. Striped dichroic filter and method for making the same
Get PDF - 6pp US3962578  1976-06 Roschen  Aeronutronic Ford Corporation Two-color photoelectric detectors having an integral filter
Get PDF - 11pp US4258126  1981-03 Hiesinger  Dr. Johannes Heidenhain GmbH High resolution recording medium and method for producing same
Get PDF - 9pp US4269915  1981-05 Moraw  Hoechst Aktiengesellschaft Information carrier original for zero order diffraction projection
Get PDF - 7pp US4269932  1981-05 Moraw et al.  Hoechst Aktiengesellschaft Process for preparing an original information carrier for zero-order diffraction
Get PDF - 8pp US4395629  1983-07 Sasano et al.  Hitachi, Ltd. Solid-state color imager and method of manufacturing the same
Get PDF - 5pp US4431695  1984-02 Flatscher  Dr. Johannes Heidenhain GmbH High resolution recording medium
Get PDF - 14pp US4522862  1985-06 Bayes et al.  Johannes Heidenhain GmbH High resolution recording medium and method for producing same
Get PDF - 7pp US4587198  1986-05 Fisch  Minnesota Mining and Manufacturing Company Dye transfer image process
Get PDF - 8pp US4645290  1987-02 Walsh  Duro-Test Corporation Selective color filter
Get PDF - 5pp US4735892  1988-04 Orpwood et al.  Davies Brothers Ltd. Product and process for producing an image on a substrate
Foreign References: None

Other References:
  • "Full-color photosensitive glass" by S. Donald Stookey, George H. Beall, and Joseph E. Pierson, Oct. 1978, J. Appl. Phys. vol. 49, No. 10, pp. 5114-5123. (10 pages) Cited by 5 patents
  • "Nondegrading color transparencies" by Fred J. van Milligen, Steven G. Saxe, Ursula J. Gibson, and H. A. Macleod Applied Optics, vol. 24, No. 4, dated Feb. 1985, pp. 461-463. (3 pages) Cited by 2 patents

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