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US 11,999,179 B2Granted
Electrostatic printing method
AssigneeePrint Laboratories Co., Ltd.
InventorsYuji Mitani, Kazuhiko Honjyo
Life of this patent
Estimating the term…
Abstract
The electrostatic printing method of the present invention comprises arranging and adhering an original plate which is composed of an electrode and a plate layer having built-in a letterpress, intaglio plate, or gravure plate pattern or a mask sheet having ion-permeable openings on one or both sides of an image receiving sheet having an electrode and an image receiving layer, and forming a predetermined electrostatic pattern on the image receiving layer of the image receiving sheet by applying a voltage between the electrode of the original plate and the electrode of the image receiving sheet or by performing ion irradiation through the mask sheet.
Claims24
An electrostatic printing method, comprising:
- using an image receiving sheet, which is composed of a second electrode and an image receiving layer which is laminated on the second electrode via an adhesive layer having a peel strength of 0.01 to 0.3 N/25 mm and which can be peeled from the second electrode, and an original plate, which is composed of a first electrode having a uniform conductivity across an entire surface thereof and a plate layer having a suitable uniform thickness composed of an electrically-insulative, conductive, or semiconductive material which is integrally adhered on the first electrode and which has built-in a letterpress, an intaglio plate, or a gravure plate pattern,
- laminating the image receiving sheet onto the original plate so that the plate layer of the original plate and the image receiving layer of the image receiving sheet are adhered, and
- applying an appropriate voltage, which is sufficient to discharge the gap of the letterpress, the intaglio plate, or the gravure plate pattern, between the first electrode of the original plate and the second electrode of the image receiving sheet to form an electrostatic pattern corresponding to the letterpress, the intaglio plate, or the gravure plate pattern on the image receiving layer of the image receiving sheet.
An electrostatic printing method, comprising:
- adhering a mask sheet a which comprises predetermined ion-permeable openings and in which an entire surface excluding at least these openings is conductive, onto a pattern formation surface of an image receiving sheet composed of an electrically insulating material,
- arranging a back surface electrode on a surface opposite the pattern formation surface of the image receiving sheet,
- performing ion irradiation through the mask sheet a, and
- peeling the mask sheet a from the image receiving layer to form an electrostatic pattern A corresponding to the ion-permeable openings on the pattern formation surface of the image receiving layer.
1 more element
An electrostatic printing method, comprising:
- adhering a mask sheet a which comprises predetermined ion-permeable openings and in which an entire surface excluding at least these openings is conductive, onto a pattern formation surface of an image receiving sheet composed of an electrically insulating material,
- arranging a back surface electrode on a surface opposite the pattern formation surface of the image receiving sheet,
- performing ion irradiation through the mask sheet a, and
- peeling the mask sheet a from the image receiving layer to form an electrostatic pattern A corresponding to the ion-permeable openings on the pattern formation surface of the image receiving layer,
- after forming the electrostatic pattern A, adhering a mask sheet b comprising predetermined ion-permeable openings and in which at least an entire surface excluding the ion-permeable openings is conductive onto the pattern formation surface on which the electrostatic pattern A is formed in advance, and
- arranging a back surface electrode on a surface opposite the pattern formation surface of the image receiving sheet, performing ion irradiation through the mask sheet b, and peeling the mask sheet b from the image receiving sheet to form an electrostatic pattern B corresponding to the ion-permeable openings of the mask sheet b adjacent to the electrostatic pattern A or partially overlapped with the electrostatic pattern A.
3 more elements
A double-sided electrostatic printing method, comprising the steps of:
- arranging:
- an original plate E, which comprises a second electrode having a uniform conductivity across an entire surface thereof and a plate layer having a suitable uniform thickness composed of an electrically-insulating, conductive, or semiconductive material which is integrally adhered on the second electrode and which has built-in a letterpress, intaglio plate, or gravure plate pattern, or a mask sheet L which comprises predetermined ion-permeable openings, and in which at least an entire surface excluding the ion-permeable openings is conductive, and
- an original plate F, which comprises a third electrode having a uniform conductivity across an entire surface thereof and a plate layer having a suitable uniform thickness composed of an electrically-insulating, conductive, or semiconductive material which is integrally adhered on the third electrode and which has built-in a letterpress, intaglio plate, or gravure plate pattern, or a mask sheet M which comprises predetermined ion-permeable openings, and in which at least an entire surface excluding the ion-permeable openings is conductive,
- so as to face each other, and so that the plate layers face each other when the original plate E and the original plate F are used, so as to provide a gap therebetween,
- arranging, in this gap, an image receiving sheet comprising a conductive layer, which is a first electrode, and image receiving layers laminated on both surfaces of the conductive layer,
- adhering the plate layer of the original plate E or the mask sheet L with the original plate E side or mask sheet L side of image receiving layer of the image receiving sheet, and the plate layer of the original plate F or the mask sheet M with the original plate F side or mask sheet M side of image receiving layer of the image receiving sheet,
- applying an appropriate voltage sufficient to discharge the gap of the letterpress, intaglio plate, or gravure plate pattern of the plate layer of the original plate E between the second electrode of the original plate E and the first electrode of the image receiving sheet to form, on the image receiving layer of one surface of the image receiving sheet, an electrostatic pattern corresponding to the letterpress, intaglio plate, or gravure plate pattern of the plate layer of the original plate E, or peeling the mask sheet L from the image receiving sheet to form an electrostatic pattern corresponding to the ion-permeable openings of the mask sheet L after ion irradiation through the mask sheet L has been performed, and
- applying an appropriate voltage sufficient to discharge the gap of the letterpress, intaglio plate, or gravure plate pattern of the plate layer of the original plate F between the third electrode of the original plate F and the first electrode of the image receiving sheet to form, on the image receiving layer of the opposite surface of the image receiving sheet, an electrostatic pattern corresponding to the letterpress, intaglio plate, or gravure plate pattern of the plate layer of the original plate F, or peeling the mask sheet M from the image receiving sheet to form an electrostatic pattern corresponding to the ion-permeable openings of the mask sheet M after ion irradiation through the mask sheet M has been performed.
5 more elements
Dependencies are inferred from the claim text.