| 摘要 |
Initially, a substrate (e.g. a plastic credit card 12) which is to receive a printed image is electrostatically charged to form an electrostatic latent image thereon. The card is charged by using a matrix of electrodes 2,4 to accelerate ions onto thereon. Print medium (e.g. toner (26,Fig.2)) may then be transferred onto the card by a magnetic roller (22,Fig.2) in dependence upon its electrostatic potential to develop the printed image on the card. The resulting image may be fixed (e.g. by pressure and/or thermal fusing) to produce an indelible image on the card. The system may be included as part of a production line (Fig.4) for encoded cards. |
