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
Memory device, test operation method thereof, and system including the same
Non-serialized electronic product registration system and method of operating same
Co-map communication operator
Coordinated multi-point transmission in a cellular network
Method and apparatus for eliminating a motor vehicle tip-over risk
System and method for distributed security
Post-processing including median filtering of noise suppression gains
  Randomly Featured Patents
Ion optics systems
Lancet device for puncturing the skin
Injection mold and injection mold pin
Fusion proteins of Mycobacterium tuberculosis
Toothbrush
Bipolar transistor with collector diffusion layer formed deep in the substrate
Container
End fitting for pressure vessel
Electrical junction box having a replaceable controller
Electrical connector with improved fastener