(19) |
|
|
(11) |
EP 1 022 157 A3 |
(12) |
EUROPEAN PATENT APPLICATION |
(88) |
Date of publication A3: |
|
09.04.2003 Bulletin 2003/15 |
(43) |
Date of publication A2: |
|
26.07.2000 Bulletin 2000/30 |
(22) |
Date of filing: 21.01.2000 |
|
(51) |
International Patent Classification (IPC)7: B44C 1/17 |
|
(84) |
Designated Contracting States: |
|
AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE |
|
Designated Extension States: |
|
AL LT LV MK RO SI |
(30) |
Priority: |
21.01.1999 JP 1305899
|
(71) |
Applicant: Ricoh Company, Ltd. |
|
Tokyo 143-8555 (JP) |
|
(72) |
Inventors: |
|
- Kimura, Shigeaki, c/o Ricoh Co., Ltd.
Tokyo 143-8555 (JP)
- Mimura, Yoshihiro, c/o Ricoh Co., Ltd.
Tokyo 143-8555 (JP)
|
(74) |
Representative: Barz, Peter, Dr. |
|
Patentanwalt Kaiserplatz 2 80803 München 80803 München (DE) |
|
|
|
(54) |
Toner image bearing transfer sheet and method for fire fixing toner image using the
toner image bearing transfer sheet |
(57) A transfer sheet for ceramics has a support, a water-soluble layer formed thereon,
and a resin film layer with a thickness of 1 µm or more formed on the water-soluble
layer, the resin film layer bearing thereon a toner image which is capable of producing
a chromatic color after sintered, and is prepared by an electrophotographic process
using a toner which contains a coloring agent, a binder agent, and a fritted glaze.
A toner image is fire fixed to a heat-resistant solid surface by forming the toner
image on the above-mentioned resin film layer of the transfer sheet by the electrophotographic
process using the toner, separating the resin film layer and the toner image together
from the support to form a toner-image- bearing resin film member, superimposing the
toner-image-bearing resin film member on the heat-resistant solid surface in such
a manner that a non-toner-image-bearing side of the resin film member closely adheres
to the heat-resistant solid surface, and sintering the toner-image-bearing resin film
member at a sintering temperature of the resin film layer or more.