公开(公告)号：FR2466079A1

公开(公告)日：1981-03-27

申请号：FR8020302

申请日：1980-09-22

Applicant: RCA CORP

Inventor： HEYMAN PHILIP MICHAEL ,  QUINN ROBERT LEON

IPC: G06K19/06 ,  B24C1/04 ,  G06K1/12 ,  H01J9/00 ,  H01J29/88 ,  G11B23/40 ,  G11B3/82 ,  H01J29/89

Abstract: A workpiece having a machine-readable coded marking recessed into the surface thereof. The workpiece comprises a main body and a thin integral coating in the area of the marking. The marking comprises a plurality of related marks, such as a bar-code marking, which are recessed through the coating and which have substantially different light reflectances than the surrounding surface. The workpiece may include an integral undercoating between the coating and the main body with marks recessed into, but not through, the undercoating. The marks may be made by selectively removing material, as by abrasion or ablation, from defined surface areas and through the coating.

公开(公告)号：FR2466079B1

公开(公告)日：1986-06-13

申请号：FR8020302

申请日：1980-09-22

Applicant: RCA CORP

Inventor： HEYMAN PHILIP MICHAEL ,  QUINN ROBERT LEON

IPC: G06K19/06 ,  B24C1/04 ,  G06K1/12 ,  H01J9/00 ,  H01J29/88 ,  G11B23/40 ,  H01J29/89

Abstract: A workpiece having a machine-readable coded marking recessed into the surface thereof. The workpiece comprises a main body and a thin integral coating in the area of the marking. The marking comprises a plurality of related marks, such as a bar-code marking, which are recessed through the coating and which have substantially different light reflectances than the surrounding surface. The workpiece may include an integral undercoating between the coating and the main body with marks recessed into, but not through, the undercoating. The marks may be made by selectively removing material, as by abrasion or ablation, from defined surface areas and through the coating.

公开(公告)号：DE3035996A1

公开(公告)日：1981-04-02

申请号：DE3035996

申请日：1980-09-24

Applicant: RCA CORP

Inventor： HEYMAN PHILIP MICHAEL ,  QUINN ROBERT LEON

IPC: G06K19/06 ,  B24C1/04 ,  G06K1/12 ,  H01J9/00 ,  H01J29/88 ,  G06K19/02 ,  H01J9/42 ,  H01J9/20

Abstract: A workpiece having a machine-readable coded marking recessed into the surface thereof. The workpiece comprises a main body and a thin integral coating in the area of the marking. The marking comprises a plurality of related marks, such as a bar-code marking, which are recessed through the coating and which have substantially different light reflectances than the surrounding surface. The workpiece may include an integral undercoating between the coating and the main body with marks recessed into, but not through, the undercoating. The marks may be made by selectively removing material, as by abrasion or ablation, from defined surface areas and through the coating.

公开(公告)号：IT1193971B

公开(公告)日：1988-08-31

申请号：IT2466780

申请日：1980-09-15

Applicant: RCA CORP

Inventor： HEYMAN PHILIP MICHAEL ,  QUINN ROBERT LEON

IPC: G06K19/06 ,  B24C1/04 ,  G06K1/12 ,  H01J9/00 ,  H01J29/88 ,  H01J

Abstract: A workpiece having a machine-readable coded marking recessed into the surface thereof. The workpiece comprises a main body and a thin integral coating in the area of the marking. The marking comprises a plurality of related marks, such as a bar-code marking, which are recessed through the coating and which have substantially different light reflectances than the surrounding surface. The workpiece may include an integral undercoating between the coating and the main body with marks recessed into, but not through, the undercoating. The marks may be made by selectively removing material, as by abrasion or ablation, from defined surface areas and through the coating.