Patent ID: 8177446
Filing Date: 2012-05-15
Classification: B41J

Abstract:
1. A carbon ribbon retaining mechanism, comprising: a barcode-printer base adapted to accommodate therein a barcode label roll and having an upper portion forming a receiving space; an upper cover coupled to the receiving space of the barcode-printer base and operable to alternately downward close to and cover the receiving space and flap upward to expose the receiving space, at least one pawl respectively formed on opposite edge portions of the upper cover; a printing head device accommodated in the receiving space above the barcode-printer base and adapted to effect printing on a surface of the barcode label roll, a carbon ribbon retention shaft being arranged above the printing head device for accommodating a carbon ribbon; and at least one pair of resilient fastener elements mounted above the printing head device and being flexible in bending so that when the upper cover is set in a state of being downward closed to and covering above the receiving space of the barcode-printer base, the pawls of the upper cover resiliently and correspondingly engage the resilient fastener elements to have the upper cover fixed to and covering above the printing head device.