Application unit with positioning device

    公开(公告)号:US11279123B2

    公开(公告)日:2022-03-22

    申请号:US17283652

    申请日:2019-08-22

    Abstract: An application unit includes an application mechanism with an impression cylinder, a forme cylinder, a supply roller, and a positioning device. The positioning device has a linear guide and a main supporting member, which is arranged to be movable in a positioning direction, guided by the linear guide, and is arranged rotatably on the main supporting member by a rolling bearing. The positioning device has a transfer supporting member, which is arranged to be movable in the positioning direction relative to the main supporting member, guided by the linear guide. On the transfer supporting member, a component of a bearing seat is provided, and which is configured to receive a rolling bearing arranged on the supply roller. The positioning device has a reservoir supporting member, which is arranged to be movable in the positioning direction, both relative to the main supporting member and relative to the transfer supporting member, guided by the at least one linear guide. An intermediate reservoir for application fluid is arranged on the reservoir supporting member. The reservoir supporting member is arranged, at least partially, between the main supporting member and the transfer supporting member as viewed in the positioning direction.

    MEASURED SENSOR DISTANCE CORRECTION
    7.
    发明申请

    公开(公告)号:US20200147953A1

    公开(公告)日:2020-05-14

    申请号:US16744772

    申请日:2020-01-16

    Applicant: HP INDIGO B.V.

    Abstract: Example implementations relate to determining a correction factor that converts a measured sensor distance to a calibrated sensor distance. The measured sensor distance may be based on an amount of substrate advancement through a web printing press between detecting a mark on the substrate at a first sensor and detecting the mark at a second sensor. The calibrated sensor distance may be the separation between the first sensor and the second sensor.

    Front-to-back registration of printed content

    公开(公告)号:US10144211B2

    公开(公告)日:2018-12-04

    申请号:US15308897

    申请日:2014-07-24

    Abstract: Examples disclosed herein relate to front-to-back registration of a printed content onto a print medium. In one example, a trigger signal generated by a sensor upon detection of a trigger mark on a first surface of a print medium is received. The trigger mark includes a leading edge and a trailing edge, wherein the leading edge and the trailing edge are non-parallel. Based on the trigger signal, a distance of the trailing edge from a point on the leading edge is determined. Once determined, a measure of lateral wander of the print medium with respect to the print path is obtained. The measure of the lateral wander is determined by comparing the distance between the leading edge and the trailing edge, with a threshold value.

    Web displacer method for a printing unit

    公开(公告)号:US10071581B1

    公开(公告)日:2018-09-11

    申请号:US15980423

    申请日:2018-05-15

    Abstract: A printing press is provided which includes a printing unit for printing on a web. The printing unit includes a plate cylinder, a blanket cylinder, and an impression cylinder. The press further includes a web displacement bar movable between a first position in which the web displacement bar is spaced apart from a web passing between the blanket cylinder and the impression cylinder, and a second position in which the web displacement bar holds the web in contact with the impression cylinder and spaced apart from the blanket cylinder. A method of operating the press is also provided.

Patent Agency Ranking