摘要:
A developed electrostatic image is transferred from a support to a carrier sheet over a gap of between twenty and seventy microns. The gap is formed by dusting onto the developed electrostatic image particles of such size as to form the required gap or by providing protuberances on the insulating support, which may be a photoconductor. The protuberances on the support or the majority of dusted particles are spaced apart by four millimeters or less.
摘要:
The invention comprises a method of transferring a liquid-developed electrostatic image across a gap to a carrier sheet accompanied by heating of the carrier sheet, either before or after transfer, to a temperature at which the binder or polymer forming the toner particles will solvate in the liquid entrained in the transferred image to increase the density of the image. Thus temperature is above ambient temperature but below 100.degree. C. The composition comprises an insulating dispersant liquid through which is disseminated a pigmented waxy binder or polymer which is insoluble in the dispersant liquid at room temperature but will solvate in the dispersant liquid at elevated temperatures.
摘要:
A device and method for directly converting thermal energy to electricity are disclosed. The device comprises a first surface and second surface preferably of different materials, and a gas medium having gas molecules in thermal motion between the surfaces. The first surface is operative to transfer charge to gas molecules interacting with the first surface, and the second surface is operative to receive the charge from gas molecules interacting with the second surface.
摘要:
A method of heating toner of an image on a moving surface of an intermediate transfer member in order to transfer the image to a printing medium of a printing system includes providing a toner image on an intermediate transfer member, and placing a surface of a heated member in contact with the toner image on the intermediate transfer member prior to transferring the toner image to a further surface from the intermediate transfer member. Heating of the toner image by the contacting heated member is in addition to heating by a heater internal to the intermediate transfer member.
摘要:
A liquid toner comprising: a carrier liquid; and toner particles dispersed in the carrier liquid, said toner particles comprising: a polymer blend comprising: a first polymer comprising a minor portion of said blend and having a relatively higher chemical bonding reactivity with paper, comprising a polymer chosen from the group consisting of maleic anhydride terpolymer, maleic anhydride grafted linear low density polyethylene; maleic anhydride grafted polypropylene copolymer and maleic anhydride grafted linear ethylene acetate polymer; and a second polymer comprising a major portion of said blend and having a relatively lower or null chemical bonding reactivity with paper, said first polymer being in a proportion of between 2% and less than 10% of the blend.
摘要:
A system for double-sided imaging on a continuous-web substrate having first and second substrate surfaces, the system including an imaging device including a toner-image bearing surface having selectively formed thereon first and second images. The system further includes a web-feeder system which selectively brings the first and second substrate surfaces into operative engagement with the toner-image bearing surface, to transfer thereto the first and second images, respectively, in accordance with a preselected imaging sequence.
摘要:
A process for forming high quality colored or multi-colored ceramic images or designs on ceramic surfaces comprising: (a) forming a liquid toner image comprised of polymer based toner particles incorporating a ceramic pigment and a carrier liquid, on an imaging surface; (b) transferring the image to a ceramic surface; and (c) heating the image and the ceramic substrate surface to an elevated temperature at which the ceramic pigment sinter and fuse to the ceramic substrate surface.
摘要:
A printing process for forming high contrast color images on polymer surfaces, comprising: (a) forming a layer of substantially opaque liquid toner comprising polymer based toner particles and a carrier liquid, on an imaging surface; (b) transferring the layer to an intermediate transfer member; (c) heating the layer on the intermediate transfer member to a temperature at which the toner particles at least partially coalesce; (d) repeating (a) to (c) sequentially for at least one subsequent layer in at least one subsequent layer in at least one color, said at least one subsequent layer being transferred to the intermediate transfer member onto the opaque layer to form multiple layers on the intermediate trnsfer member; and (e) transferring the multiple layers to a polymer surface.
摘要:
Apparatus for printing images on generally cylindrical objects, such as cans, including: an image bearing surface having an image thereon; and an impression guide which is generally parallel to and spaced from the image bearing surface, which guide supports the cylindrical objects in rolling contact with the image bearing surface, whereby images are transferred from the image bearing surface to surfaces of the cylindrical objects in contact therewith.