NON-LINEAR POWER CONTROL OF A THERMAL PRINT HEAD IN A PLASTIC CARD PRINTER

    公开(公告)号:US20240253382A1

    公开(公告)日:2024-08-01

    申请号:US18636657

    申请日:2024-04-16

    发明人: Wade Kragtorp

    IPC分类号: B41M5/00 B41J2/525 B41M5/26

    摘要: Printing multi-color images on non-vinyl plastic identification documents in identification document printing systems. A non-linear pixel density adjustment curve is used to adjust the pixel density data of a multi-color image to be printed which adjusts the power applied to the thermal print head. The use of a non-linear pixel density adjustment curve to adjust the pixel density data improves the quality of the resulting multi-color printed image, reduces mass transfer of the dye donor layer, and reduces breaking of the carrier film of the print ribbon.

    Non-linear power control of a thermal print head in a plastic card printer

    公开(公告)号:US11981154B2

    公开(公告)日:2024-05-14

    申请号:US17808196

    申请日:2022-06-22

    发明人: Wade Kragtorp

    IPC分类号: B41M5/00 B41J2/525 B41M5/26

    摘要: Printing multi-color images on non-vinyl plastic identification documents in identification document printing systems. A non-linear pixel density adjustment curve is used to adjust the pixel density data of a multi-color image to be printed which adjusts the power applied to the thermal print head. The use of a non-linear pixel density adjustment curve to adjust the pixel density data improves the quality of the resulting multi-color printed image, reduces mass transfer of the dye donor layer, and reduces breaking of the carrier film of the print ribbon.

    Thermal processing drum and methods

    公开(公告)号:US11884081B2

    公开(公告)日:2024-01-30

    申请号:US17611303

    申请日:2020-04-17

    IPC分类号: B41J2/335 B41M5/26 B41J11/00

    摘要: A drum (10) and thermal control system (180) in this disclosure are suitable for use in systems for thermally processing imaging media. The drum comprises a cylindrical surface (11) disposed around and parallel to an axis of rotation (A) of the drum, end plates (12) each extending orthogonally to the axis of rotation of the drum, and lamp heaters (14A-14B) extending parallel to the axis of rotation within the interior of the drum. By making use of thermal sensor measurements, the lamp heaters may be controlled to maintain a uniform dmm surface temperature.

    SYSTEMS AND METHODS FOR PRINTING METAL LINES AND PATTERNS AT HIGH RESOLUTION

    公开(公告)号:US20230398802A1

    公开(公告)日:2023-12-14

    申请号:US18187492

    申请日:2023-03-21

    申请人: Reophotonics Ltd.

    发明人: Michael Zenou

    IPC分类号: B41M5/26 H05K3/18

    摘要: A solvent layer is coated on a metal layer carried by a donor substrate, allowing the fabrication of solid metal lines at a high resolution. The laser jetting involves ejecting metal particles, constrained within a solvent membrane, from the metal layer. Once the metal particles have been deposited onto a receiver substrate, the solvent can be evaporated. Since this printing procedure can be performed with the solvent layer in direct contact with the receiver substrate or separated therefrom by a small distance, the resolution of the metal lines can be very high and depends directly on the laser spot size and defocus. The solvent constrains the droplet size of the metal particles, which can increase or maintain the resolution of the laser beam. As this process is a continuous sequence production, the metal line production can be performed at a very rapid rate.