| 主权项 |
1. A duplex printer system comprising:
a double-sided label web operable to be printed on opposite first and second sides thereof, said first side of the label web presenting longitudinally spaced apart printable regions devoid of adhesive, said first side of the label web including exposed adhesive located at least in part between printable regions, said label web presenting longitudinally extending sides between which the label width is defined, each of said printable regions being spaced from a first one of the label sides to define a corresponding first side margin, said label web including exposed adhesive applied to a first adhesive side area located within the first side margin; and a duplex printer operable to print both sides of the label web as the label web is advanced longitudinally through the printer, said duplex printer including—
a printer frame that presents a web path along which the label web passes longitudinally through the printer in a feed direction, andfirst and second print heads supported relative to the printer frame and arranged to print respective sides of the label web as the label web makes a single pass along the web path,said first print head being shiftably mounted relative to the printer frame for movement into and out of a printing position, in which the first print head is operable to print within a respective one of the printable regions,said first print head being selectively shifted out of the printing position so as to avoid contact with the exposed adhesive during label web advancement,said first print head including a printer interface positioned in printing engagement with the label web when the first print head is shifted to the printing position,said printer interface being spaced from the first adhesive side area and thereby prevented from engaging the exposed adhesive applied thereto when the first print head is shifted to the printing position. |
