Device, method, and printing press for multiple printing of printing substrate sheets
AssigneeKoenig & Bauer Aktiengesellschaft
InventorsThomas KERSTEN, Patrick KRESS, Martin LANIG, Volkmar SCHWITZKY
Life of this patent
Estimating the term…
Abstract
Please add the Abstract of the Disclosure, as set forth on the separate accompanying sheet. This Abstract of the Disclosure is essentially the same, in content, as the Abstract which is a part of the published PCT application, WO 2020/074135 A1. No new matter is being presented by the addition of this Abstract of the Disclosure.
Claims16
1-19. (canceled)
A device for printing sheets of printing substrate (02), having a first printing nip (12) which is formed between a first cylinder (19;
- 19*) that acts as a transport cylinder (19;
- 19*) and a second cylinder (18), and in which the printing substrate sheets (02) can be printed on one or on both sides with one or more collected print image segments, and having a second printing nip (11) lying downstream in the printing substrate path, which printing nip is disposed at a level lying below the first printing nip (12) and is formed between a third cylinder (17) that acts as a transport cylinder (17) and a fourth cylinder (16), and in which the printing substrate sheets (02) can be printed on both sides with one or more collected print image segments, wherein the printing substrate sheets (02) can be conveyed via at least one rotating transport means (33;
- 38;
- 39) along a transport path from the cylinder (19;
- 19*) that acts as a transport cylinder (19;
- 19*) of the first printing nip (12) to the cylinder (17) that acts as a transport cylinder (17) of the second printing nip (11), characterized in that on the transport path, downstream of the cylinder (19;
- 19*) that acts as a transport cylinder (19;
- 19*) of the first printing nip (12) and upstream of the cylinder (17) that acts as a transport cylinder (17) of the second printing nip (11), at least one first electrode (37;
- 41) directed toward the outer circumference of the at least one rotating transport means (33) is arranged in an angular segment lying in the transport path for the printing substrate sheets (02) in such a way that when an electric voltage is applied, a printing substrate sheet (02) being guided past the electrode (37;
- 41) can be electrostatically charged.
A method for printing sheets of printing substrate (02) in at least a first printing nip (12) and a second printing nip (11), which is spaced apart from the first printing nip (12) in the transport path of the printing substrate sheets (02) and lies at a level below the first printing nip (12), wherein the printing substrate sheets (02) are printed on one or on both sides with one or more collected print image segments in the first of the at least two printing nips (12) in the transport path, are transported along the transport path running from top to bottom to the second of the at least two printing nips (11), where they are printed on both sides with one or more collected print image segments, wherein the transport from the first to the second printing nip (12, 11) is carried out by the successive transfer via one or more rotating transport means (33;
- 38;
- 39), characterized in that the printing substrate sheets (02) are electrostatically charged on the transport path between the first and the second printing nip (12;
- 11) by means of an electrode (37;
- 41) arranged on the transport path, and in that, after running up onto a first transport means (33) that follows the first printing nip (12), and/or after running up onto a last one of multiple transport means (39) arranged in the transport path, the printing substrate sheets (02) are charged electrostatically by means of an electrode (37;
- 41).
Dependencies are inferred from the claim text.