Abstract: A rolled-print-medium holder device includes an axial member, a holding member, an outer fitting portion, an inner fitting portion, and a weld portion. The holding member is fixed to at least one of both axial ends of the axial member and holds both sides of a rolled print medium. The outer fitting portion is provided at either one of the axial member and the holding member. The outer fitting portion has an inner peripheral surface. The inner fitting portion is provided at the other one of the axial member and the holding member. The inner fitting portion has an outer peripheral surface. The inner fitting portion is fitted into the outer fitting portion. The weld portion is provided at at least one of the inner fitting portion and the outer fitting portion. The weld portion at least fixes the outer peripheral surface to the inner peripheral surface by ultrasonic welding.

Abstract: A sheet package (9) to be set in a sheet storage unit (6, 106) of a printer (1) for supplying the printer with sheets comprises a stack of sheets (7) and a package member (8) covering the stack of sheets. When the sheet package (9) is set in the printer (1), the sheets (7) are supplied from the sheet package (9) to the printer (1) along a sheet feed direction. The package member (8) has a side part (53) spreading in parallel with the sheet feed direction and having an edge at its front in the sheet feed direction. On a side wall of the sheet storage unit (6, 106), a pressing member (41) for pressing a side face of the stack of sheets (7) is formed in order to align the stack of sheets (7) in a direction orthogonal to the sheet feed direction. The side part (53) places the package member at a proper position in the sheet storage unit (6, 106) in regard to the sheet feed direction by letting the edge make contact with the pressing member (41).

Abstract: A sheet package which can be loaded in a sheet storage chamber (6) of a printer (1) comprises a stack of sheets (7) as print media for the printer and a package member (8) covering the exterior of the stack of sheets. The package member includes a first portion (53) covering one of upper and lower faces of the stack of sheets, a second portion (52) connecting with the first portion and covering a side face of the stack of sheets, and a third portion (51) connecting with the second portion and covering the other of the upper and lower faces of the stack of sheets. The first portion of the package member includes a first exposing portion exposing part of the stack of sheets to allow the entrance of a sheet feed roller (12) of the printer.

Abstract: A roll sheet has a release paper as a base sheet. A recording paper is attached to the release paper via an adhesive layer so that the recording paper can be peeled off from the release paper. First and second peel-away areas are formed on both side edges of the roll sheet in the widthwise direction thereof by peeling off both widthwise edges of the recording paper from the release paper to allow the release paper to be exposed at the both side edges of the roll sheet. Sensor marks are printed on the release paper as being entirely shifted from the peel-away areas. This ensures that the roll sheet has a uniform thickness over the entire area of each sensor mark, thereby ensuring that each sensor mark has uniformities in its reflectivity and transmittance with respect to incident light.

Abstract: In a label printer, a top cover made of transparent resin is attached to a housing at a rear upper edge to cover a roll sheet holder storage part and to be freely opened and closed. A roll sheet of a roll sheet holder removably mounted in the roll sheet holder storage part is visible through the transparent resinous top cover. The roll sheet is provided with a plurality of medium information marks by printing. The medium information marks are visible through the top cover.