Radiation imagery chemistry: process – composition – or product th – Electric or magnetic imagery – e.g. – xerography,... – Post imaging process – finishing – or perfecting composition...
Patent
1989-07-28
1991-06-04
Martin, Roland
Radiation imagery chemistry: process, composition, or product th
Electric or magnetic imagery, e.g., xerography,...
Post imaging process, finishing, or perfecting composition...
430 10, 430 99, 430126, 156235, 427 7, 428916, 283109, G03G 1322
Patent
active
050213180
ABSTRACT:
Disclosed is a process for forming secure images which comprises electrostatically charging an imaging member; imagewise exposing the charged member, thereby forming a latent image on the member; developing the latent image with a liquid developer comprising a liquid medium, a charge control additive, and toner particles comprising a colorant and a polymeric material; allowing the developed image to dry on the imaging member; contacting the portion of the imaging member with the dry developed image with a substantially transparent sheet having an adhesive material on the surface thereof in contact with the imaging member, thereby transferring the developed image from the imaging member to the substantially transparent sheet; contacting the adhesive surface of the substantially transparent sheet with the developed image with a paper sheet having a polymeric coating on the surface that is in contact with the substantially transparent sheet; and applying heat and pressure to the substantially transparent sheet and the paper sheet at a temperature and pressure sufficient to affix the image permanently to the paper. The resulting document is a paper sheet covered with the transparent sheet, with the developer material that forms the image being situated between the paper sheet and the transparent sheet. The disclosed process is generally useful for applications such as passport photographs, identification badges, banknote paper, and the like.
REFERENCES:
patent: 2221776 (1938-09-01), Carlson
patent: 2297691 (1939-04-01), Carlson
patent: 2357809 (1940-11-01), Carlson
patent: 3130064 (1964-04-01), Insalace
patent: 3275436 (1962-07-01), Mayer
patent: 3549447 (1970-12-01), Bresnick
patent: 3716360 (1973-02-01), Fukushima et al.
patent: 4064285 (1977-12-01), Mammino
patent: 4066802 (1978-01-01), Clemens
patent: 4234644 (1980-11-01), Blake et al.
patent: 4287285 (1981-09-01), Mosehauer
patent: 4560426 (1985-12-01), Moraw et al.
patent: 4762764 (1988-08-01), Ng et al.
patent: 4812383 (1989-03-01), Foote
patent: 4863543 (1989-09-01), Shiozawa et al.
"Microfilm Process Embeds Photos Directly Into Security Documents", Lawrence Surtees, Toronto Sun, Sep. 21, 1984.
Croucher Melvin D.
Drappel Stephen
Duff James M.
Lennon John M.
Mayo James D.
Byorick Judith L.
Martin Roland
Xerox Corporation
LandOfFree
Process for forming secure images does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Process for forming secure images, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Process for forming secure images will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1025837