Claims
- 1. Apparatus for drying receiver sheets prior to such receiver sheets receiving electrophotographic images, comprising:
- at least one set of preconditioning rotatable rollers with each preconditioning rotatable roller in the set touching an opposing preconditioning rotatable roller to form a nip, wherein at least one of the preconditioning rotatable rollers in the set is formed from zirconia ceramic or zirconia composite and is treated with an offset preventing oil; and
- means for heating at least one of the surfaces of the preconditioning rollers of the set to dry receiver sheets as each passes through the nip.
- 2. The apparatus of claim 1 wherein the offset preventing oil includes compounds having functional groups selected from the groups consisting of --CH.sub.2 --CH.sub.2 --CH.sub.2 --NH.sub.2, ##STR10##
- 3. The apparatus of claim 1 wherein the offset preventing oil has been treated with IR laser light to change the surface energy of the zirconia ceramic or zirconia composite includes compounds having functional groups selected from the groups consisting of --CH.sub.2 --CH.sub.2 --CH.sub.2 --NH.sub.2 and
- 4. The apparatus of claim 1 wherein the offset preventing oil is selected from the group consisting of: A: is --CH.sub.2 --CH.sub.2 --CH.sub.2 --NH.sub.2
- n: 50.ltoreq.n.ltoreq.1000
- R is an alkyl or aryl group ##STR11## wherein m,n: 1%.ltoreq.m.ltoreq.99%
- 1%.ltoreq.n.ltoreq.99%
- m+n=100%; and ##STR12## where n: 50.ltoreq.n.ltoreq.1000.
- 5. The apparatus of claim 1 wherein the offset preventing oil includes compounds having functional groups selected from the groups consisting of: ##STR13## wherein m,n: 1%.ltoreq.m.ltoreq.99%
- 1%.ltoreq.n.ltoreq.99%
- m+n=100%; and ##STR14## A is --CH.sub.2 --CH.sub.2 --CH.sub.2 --NH.sub.2 n: 50.ltoreq.n.ltoreq.1000
- R is an alkyl or aryl group.
- 6. Apparatus for drying receiver sheets prior to such receiver sheets receiving electrophotographic images, comprising:
- at least one set of preconditioning rotatable rollers with each preconditioning rotatable roller in the set touching an opposing preconditioning rotatable roller to form a nip, wherein each of the preconditioning rotatable rollers in the set is formed from zirconia ceramic or zirconia composite;
- means for heating at least one of the surfaces of the preconditioning rotatable rollers of the set to dry receiver sheets as each passes through the nip; and
- the surface of each of the preconditioning rotatable rollers being treated with an offset preventing oil.
- 7. The apparatus of claim 6 wherein the offset preventing oil includes compounds having functional groups selected from the groups consisting of --CH.sub.2 --CH.sub.2 --CH.sub.2 --NH.sub.2, ##STR15##
- 8. The apparatus of claim 6 wherein the offset preventing oil has been treated with IR laser light to change the surface energy of the zirconia ceramic or zirconia composite includes compounds having functional groups selected from the groups consisting of --CH.sub.2 --CH.sub.2 --CH.sub.2 --NH.sub.2 and
- 9. The apparatus of claim 6 wherein the offset preventing oil is selected from the group consisting of: A: is --CH.sub.2 --CH.sub.2 --CH.sub.2 --NH.sub.2
- n: 50.ltoreq.n.ltoreq.1000
- R is an alkyl or aryl group ##STR16## wherein m,n: 1%.ltoreq.m.ltoreq.99%
- 1%.ltoreq.n.ltoreq.99%
- m+n=100%; and ##STR17## where n: 50.ltoreq.n.ltoreq.1000.
- 10. The apparatus of claim 6 wherein the offset preventing oil includes compounds having functional groups selected from the groups consisting of: ##STR18## wherein m,n: 1%.ltoreq.m.ltoreq.99%
- 1%.ltoreq.n.ltoreq.99%
- m+n=100%; and ##STR19## A is --CH.sub.2 --CH.sub.2 --CH.sub.2 --NH.sub.2 n: 50.ltoreq.n.ltoreq.1000
- R is an alkyl or aryl group.
CROSS REFERENCE TO RELATED APPLICATION
Reference is made to commonly-assigned and concurrently filed U.S. patent application Ser. No. 08/822,163 filed Mar. 21, 1997, entitled "Zirconia Ceramic Roller For Fixing Particulate Imaging Material to a Receiver" by Chatterjee et al and U.S. patent application Ser. No. 08/821,991, filed Mar. 21, 1997, entitled "Toner Offset Preventing Oils for Zirconia Ceramic and Its Composites Rollers" by Chatterjee et al, the teachings of which are incorporated herein by reference.
US Referenced Citations (14)