Selective printing apparatus

Selective printing apparatus, comprising:

• a printing band having a printing section and a non-printing human readable section, printing characters formed on the outer surface of the printing section, corresponding human readable indicia on the outer surface of the human readable section, only small lugs on the underside of the printing section, and large lugs on the underside of the human readable section.

Selective printing apparatus, comprising:

• a printing band having a printing section and a non-printing human readable section, printing characters on the outer surface of the printing section, corresponding human readable indicia on the outer surface of the human readable section, large lugs on the underside of only the human readable section, and knurling on the underside of the printing section, wherein the knurling comprises a plurality of projections smaller in size than the large lugs.

Selective printing apparatus, comprising:

• a stationary support disposed adjacent a printing zone, a drive wheel, means mounting the drive wheel for rotation through 360.degree., a printing band extending under tension about the support and the wheel, the printing band having a printing section and a non-printing human readable section, printing characters on the outer surface of the printing section, corresponding human readable indicia on the outer surface of the human readable section, large notches at the peripheral surface of the wheel, a plurality of small, straight, parallel grooves and ridges at the peripheral surface adjacent the large notches, the small grooves being smaller than the large notches, the small grooves and ridges extending transversely to the peripheral direction around the feed wheel, large lugs on the underside of only the human readable section for meshing with the large notches to enable the selected printing character to be advanced to the printing zone but in the event the printing section is brought into engagement with the wheel and a large notch in the wheel no longer meshes with a large lug then the small ridges at the surface of the wheel contact the underside of the printing section to enable the band to be returned to the position wherein a large notch can again mesh with a large lug.

Selective printing apparatus, comprising:

• a printing band having a printing section and a non-printing human readable section, printing characters formed on the outer surface of the printing section, corresponding human readable indicia on the outer surface of the human readable section, only small lugs on the underside of the printing section, and large lugs on the underside of the human readable section, whereby the printing band is adapted to cooperate with a wheel having large notches and intervening small notches at its periphery and the large lugs are engageable with the large notches in one position of the band relative to the wheel and the small lugs are engageable with the small notches in another position of the band relative to the wheel.

Selective printing apparatus, comprising:

• a printing band having a printing section and a non-printing human readable section, printing characters on the outer surface of the printing section, corresponding human readable indicia on the outer surface of the human readable section, large lugs on the underside of only the human readable section, and knurling on the underside of the printing section, wherein the knurling comprises a plurality of projections smaller in size than the large lugs, whereby the printing band is adapted to cooperate with a wheel having large notches and intervening knurling at its periphery and the large lugs are engageable with the large notches in the wheel in one position of the printing band relative to the wheel and the knurling on the band is engageable with the knurling on the wheel in another position of the band relative to the wheel.