Resources Contact Us Home
Browse by: INVENTOR PATENT HOLDER PATENT NUMBER DATE
 
 
Recording materials
T996002 Recording materials
Patent Drawings:

Inventor: Kwok
Date Issued: July 1, 1980
Application: 06/087,566
Filed: October 23, 1979
Inventors: Kwok; John C. (Sarnia, CA)
Assignee: Bexford Limited (London, GB2)
Primary Examiner:
Assistant Examiner:
Attorney Or Agent:
U.S. Class: 430/152; 430/176; 430/177; 430/290; 430/633; 430/636; 430/637; 430/638
Field Of Search:
International Class: G03C 5/60
U.S Patent Documents:
Foreign Patent Documents:
Other References:









Abstract: Vesicular recording materials are described which include a sensitized layer comprising a polyeric vehicle for the sensitizing agent which is an acrylonitrile/substituted or unsubstituted styrene copolymer with at least 55 mole % of acrylonitrile and preferably less than 85 mole %. The copolymer is usually homogeneous and preferably derived from acrylonitrile and the styrene comonomer along and most preferably contains from 65 to 82 mole % of acrylonitrile. The copolymer is softenable on heating to permit the gas released by the sensitizing agent in the light struck areas to form light-scattering or reflecting vesicles therein.A surfactant in an amount of at least 1% by weight, based on the weight of the copolymer, is essential to vesiculation and anionic surfactants are especially effective in providing a wide tonal range and good speed rating, amounts up to 20% by weight being preferred. Generally, amounts of the surfactant in the range 2 to 5% by weight provide a satisfactory combination of vasiculating properties. The sensitized layer is preferably applied as a coating to a carrier sheet support such as a polythylene terephthalate film. These recording materials have excellent vesiculating properties, particularly tonal range and speed rating.
Claim:
Description:
 
 
  Recently Added Patents
Computer network running a distributed application
Stereoscopic display
System and method for providing radio communication in a land mobile radio system
Packet transmission method, apparatus, and network system
Related news articles
Field emission cathode device and field emission display using the same
Communication system including a switching section for switching a network route, controlling method and storage medium
  Randomly Featured Patents
Polymerization catalyst used for producing polyolefins that have excellent combined properties
Image processing apparatus and method thereof
Position detection system, medical-device guidance system, and position detection method
Method of etching polysilicon layer
Packaging machine and method
Method of forming copper sulfide layer over substrate
Semiconductor device
Thermal shock-resistant ceramic article
Mold structure for producing a window assembly
Water conservation device for use in toilet tanks