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US4291114: Imageable, composite-dry transfer sheet and process of using same

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Filing Information

Inventor(s) William R. Berggren · Shelby J. Brownley ·
Assignee(s) Minnesota Mining and Manufacturing Co. ·
Attorney/Agent(s) Cruzan Alexander ·
Primary Examiner Jack P. Brammer ·
Application Number US6158951
Filing date 06/19/1980
Issue date 09/22/1981
Predicted expiration date 10/18/1998
U.S. Classifications 430/253  · 204/159.23  ·
International Classifications G03C 1112  ·
Kind CodeA
International Classifications 430253;260;271;273;280;281;322 ·
Related U.S. Application DataCROSS REFERENCE TO RELATED APPLICATION
This is a continuation-in-part of copending application Ser. No. 67,322 filed Oct. 18, 1978, now abandoned.
31 Claims, No Drawings


Abstract

An imageable composite dry-transfer sheet that comprises (a) a cover sheet transmissive to actinic radiation that has at least one oleophilic surface, (b) a photopolymerizable layer on the oleophilic surface of the cover sheet that comprises a cationically polymerizable organic material, a cationic photopolymerization initiator, and, optionally, a thermoplastic hydrocarbon resin that is chemically inert to said organic material and said initiator and (c) a base sheet with an oleophobic surface on the photopolymerizable layer wherein, after image-wise exposure to activating radiation, the interfacial adhesion of the unexposed areas of the photopolymerizable layer is greater for the cover sheet than for the base sheet; the interfacial adhesion of the exposed areas of the photopolymerizable layer is greater for the base sheet than for the cover sheet; and wherein, after separation of the cover and base sheets, the unexposed areas of the photopolymerizable layer are rendered burnishable by subsequent exposure to activating radiation through the cover sheet.

Independent Claims | See all claims (31)

  1. 1. An imageable composite dry-transfer sheet that comprises (a) a cover sheet that is transmissive to activating radiation and has at least one oleophilic surface, (b) a photopolymerizable layer on the oleophilic surface of said cover sheet that comprises a cationically polymerizable organic material, and from about 0.1 to 10 parts by weight per 100 parts by weight of said organic material of a cationic photopolymerization initiator, and (c) a base sheet that has an oleophobic surface in contact with said photopolymerizable layer;wherein said photopolymerizable layer has a complex shear modulus of, at most, 1.times.10.sup.6 dyne/cm.sup.2 ; andwherein, after image-wise exposure to activating radiation, the interfacial adhesion of the unexposed areas of said photopolymerizable layer is greater for said cover sheet than for said base sheet; the interfacial adhesion of the exposed areas of said photopolymerizable layer is greater for said base sheet than for said cover sheet; andwherein, after separation of said cover and said base sheets, the unexposed areas of said layer are rendered burnishable by subsequent exposure to activating radiation through said cover sheet.

References Cited

U.S. Patent Documents

Document NumberAssigneesInventorsIssue/Pub Date
US3353955 DU PONT Colgrove Nov 1967
US3627529 GRACE W R & CO Frank et al. Dec 1971
US3754920 DU PONT Kuchta Aug 1973
US3770438 CELESTE J Celeste Nov 1973
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US4090936 Minnesota Mining and Manufacturing Company Barton May 1978
US4161405 General Electric Company Crivello Jul 1979
US4175964 Fuji Photo Film Co., Ltd. Uchida et al. Nov 1979

Referenced By

Document NumberAssigneeInventorsIssue/Pub Date
AU708754 DU PONT GROSSA MARIO et al. Aug 1999
US6335143 Wako Pure Chemical Industries Ltd. Motoshige Sumino et al. Jan 2002
US6540345 Sawgrass Systems, Inc. Barbara Wagner et al. Apr 2003
USRE39106 DSM IP Assets B.V. John A. Lawton et al. May 2006
US7763980 SanDisk Corporation Chien-Ko Liao et al. Jul 2010
US7772047 SanDisk Corporation Chien-Ko Liao et al. Aug 2010
US7939944 SanDisk Corporation Chien-Ko Liao et al. May 2011
US8212360 SanDisk Technologies Inc. Chien-Ko Liao et al. Jul 2012
EP0156535 MINNESOTA MINING AND MANUFACTURING COMPANY Busman, Stanley C. C/O Minnesota Mining and Jun 1989
EP0094182 MINNESOTA MINING AND MANUFACTURING COMPANY Richard E. Bennett et al. Aug 1988
EP0121391 NITTO DENKO CORPORATION Yamamura, Yutaka Nitto Electric Ind. Co. Ltd. et al. Aug 1989
EP0887706 WAKO PURE CHEMICAL INDUSTRIES, LTD Motoshige Sumino et al. Dec 1998
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US5856064 Minnesota Mining and Manufacturing Company Hsin-hsin Chou Jan 1999
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US5851724 N.V. Agfa-Gevaert Van Damme; Marc et al. Dec 1998
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US5310869 Presstek, Inc. Thomas E. Lewis et al. May 1994
US5536772 Shell Oil Company Steven H. Dillman et al. Jul 1996
US6174933 ISP Investments Inc. James A. Dougherty et al. Jan 2001
US5665494 Nippon Paint Company, Ltd. Masami Kawabata et al. Sep 1997
US4511641 Minnesota Mining and Manufacturing Company Stanley C. Busman et al. Apr 1985

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