Electrostatic printing apparatus and intermediate transfer members
OwnerRegina Guslitzer, Dina Voloshin Firouz +1inventors
InventorsRegina Guslitzer, Dina Voloshin Firouz, Sergey Inotaev
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Abstract
Electrostatic printing apparatus and intermediate transfer members Herein is disclosed an intermediate transfer member for use in an electrostatic printing process, the intermediate transfer member having an outer release layer comprising a polysiloxane that has been cross-linked using an addition cure process such that it contains Si—R—Si bonds, wherein R is an alkylene moiety, and a monoalkenylsiloxane has been reacted with and incorporated into the polysiloxane. An electrostatic printing apparatus comprising the intermediate transfer member is also disclosed.
Claims20
An electrostatic printing apparatus, comprising:
- a photoconductive member having a surface on which can be created a latent electrostatic image;
- and
- an intermediate transfer member having an outer release layer comprising a polysiloxane that has been cross-linked using an addition cure process such that it contains Si—R—Si bonds, wherein R is an alkylene moiety, and a monoalkenylsiloxane has been reacted with and incorporated into the polysiloxane;
- wherein the electrostatic printing apparatus is adapted, in use, on contacting the surface of the photoconductive member with an electrostatic ink composition to form a developed toner image on the surface of the latent electrostatic image, then transfer the developed toner image to the outer release layer of intermediate transfer member, and then transfer the developed toner image from the outer release layer of the intermediate transfer member to a print substrate;
- wherein the polysiloxane has been cross-linked using an addition cure process involving the addition cure of:
- a first component comprising a polysiloxane having at least two alkene groups per molecule;
- a second component comprising a polysiloxane having a silicon hydride moiety;
- and
- a third component comprising a monovinyl siloxane;
- and wherein the vinyl group of the monovinyl siloxane is covalently bonded to an end siloxyl unit of the siloxane chain or an intermediate siloxyl unit of the siloxane chain, and the rest of the siloxyl units of the siloxane chain have unsubstituted alkyl or aryl groups attached.
An electrostatic printing apparatus, comprising:
- a photoconductive member having a surface on which can be created a latent electrostatic image;
- and
- an intermediate transfer member having an outer release layer comprising a polysiloxane that has been cross-linked using an addition cure process such that it contains Si—R—Si bonds, wherein R is an alkylene moiety, and a monoalkenylsiloxane has been reacted with and incorporated into the polysiloxane;
- wherein the electrostatic printing apparatus is adapted, in use, on contacting the surface of the photoconductive member with an electrostatic ink composition to form a developed toner image on the surface of the latent electrostatic image, then transfer the developed toner image to the outer release layer of intermediate transfer member, and then transfer the developed toner image from the outer release layer of the intermediate transfer member to a print substrate;
- wherein the polysiloxane has been cross-linked using an addition cure process involving the addition cure of:
- a first component comprising a polysiloxane having at least two alkene groups per molecule;
- a second component comprising a polysiloxane having a silicon hydride moiety;
- and
- a third component comprising a monovinyl siloxane;
- and wherein the siloxane chain of the monovinyl siloxane is a straight chain, the vinyl group of the monovinyl siloxane is covalently bonded to an end siloxyl unit of the siloxane chain, and the rest of the siloxyl units of the siloxane chain have unsubstituted alkyl or aryl groups attached.
An intermediate transfer member for use in an electrostatic printing process, the intermediate transfer member having an outer release layer comprising a polysiloxane that has been cross-linked using an addition cure process such that it contains Si—R—Si bonds, wherein R is an alkylene moiety, and a monoalkenylsiloxane has been reacted with and incorporated into the polysiloxane;
- wherein the polysiloxane has been cross-linked using an addition cure process involving the addition cure of:
- a first component comprising a polysiloxane having at least two alkene groups per molecule;
- a second component comprising a polysiloxane having a silicon hydride moiety;
- and
- a third component comprising a monovinyl siloxane;
- wherein:
- the siloxane chain of the monovinyl siloxane is a straight chain, the vinyl group of the monovinyl siloxane is covalently bonded to an end siloxyl unit of the siloxane chain, and the rest of the siloxyl units of the siloxane chain have unsubstituted alkyl or aryl groups attached;
- or
- the vinyl group of the monovinyl siloxane is covalently bonded to an end siloxyl unit of the siloxane chain or an intermediate siloxyl unit of the siloxane chain, and the rest of the siloxyl units of the siloxane chain have unsubstituted alkyl or aryl groups attached.
Dependencies are inferred from the claim text.