DROP-ON-DEMAND INK DELIVERY SYSTEMS AND METHODS IN CARD PROCESSING SYSTEMS

    公开(公告)号:US20200039228A1

    公开(公告)日:2020-02-06

    申请号:US16531570

    申请日:2019-08-05

    Abstract: DOD ink delivery systems and methods are described herein that are used in DOD card printing systems of card processing systems for supplying ink for DOD printing on plastic cards of the type that bear personalized data unique to the intended cardholder and/or which bear other card information. The DOD ink delivery system is configured to recirculate the ink, or have a second pressure damper container that provides damping to eliminate large and abrupt spikes in ink pressure which can disturb the meniscus of the ink in each nozzle of the print head generated by a vacuum system, or simultaneously operate a supply pump at a lower flow rate than a return pump during an autofill/autodrain procedure on the ink delivery system.

    Drop-on-demand print head cleaning mechanism and method

    公开(公告)号:US10603917B2

    公开(公告)日:2020-03-31

    申请号:US16118971

    申请日:2018-08-31

    Abstract: A card processing system includes a drop-on-demand card printing system that has at least one drop-on-demand print head with a nozzle plate. An automated cleaning mechanism is provided in the drop-on-demand card printing system that is configured to clean the nozzle plate without the cleaning mechanism physically contacting the nozzle plate. Since the nozzle plate is not physically contacted by the cleaning mechanism, damage to the nozzle plate during cleaning is avoided thereby avoiding degrading the resulting print quality of the print head.

    DROP-ON-DEMAND PRINTER WITH BOTTLE INK SUPPLY AND KEYED BOTTLE CAP

    公开(公告)号:US20190134986A1

    公开(公告)日:2019-05-09

    申请号:US16185380

    申请日:2018-11-09

    Abstract: An ink bottle is mounted in a DOD printer with the ink bottle acting as an ink supply reservoir that supplies ink to a DOD print head. A unique cap is provided that is configured to be affixed to an end of the ink bottle via threads or the like. The cap can be provided with one or more mechanical keying features used to limit mounting of the cap and the bottle assembly to a correct receiver in the DOD printer. The cap can also be provided with a valve controlled ink passage that allows ink to flow out of the bottle through the cap and a valve controlled vent passage that allows air to enter the bottle through the cap.

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