A media holder assembly(11) includes a base(13) secured to a platform(15). The platform(15) has a central cylindrical depression(16). A first hub(20) protrudes from the center of the depression(16). A first spring(24), concentric to the first hub(20) biases a second, ring-shaped hub(30) which is fitted over the first spring(24). The second hub(30) is slidably engaged to the first hub(20). A second spring(26), concentric to the first hub(20) and sized to fit around the second hub(30), biases a third, ring-shaped hub(40) which is fitted over the second spring(26). The third hub(40) is slidably engaged to the second hub(30) and to the inner wall(17) of the cylindrical depression(16). The first hub(20), the second hub(30), and the third hub(40) are sized to accommodate media rolls of different sizes.

An image forming apparatus may include a mechanism for forming a corrugated shape in a sheet to be conveyed. The mechanism may include various components include one or more pressing portions, one or more ribs, one or more discharge rollers, a switching mechanism and the like. In one arrangement, ribs and pressing portions configured to create the corrugated shape may be disposed at various locations upstream or downstream of the platen, recording portion and/or nozzles thereof. In one example, pressing portions may be disposed both upstream and downstream of the nozzles of the recording portion to maintain a corrugated shape in the conveyed sheet. Various other configurations may be used.

In an example, a media guide assembly includes a support structure, a first media guide, and a second media guide moveably coupled to the support structure. In that example, the second media guide includes a surface that generates a wedge effect to move the second media guide to a level when contacted by a force. In another example, an example print apparatus includes a support structure, a first media guide, and a second media guide substantially parallel to the first media guide with respect to a media advance direction. In that example, the second media guide includes a position control mechanism to place force on a media path surface of the second media guide towards a rest position where the media path surface of the second media guide is substantially parallel to the media path surface of the first media guide.

A paper bucket for a printer with a self-adjusting spindle mechanism capable of accommodating media rolls of varying width is provided, together with a printer having such a paper bucket and corresponding method. The adjustable paper bucket may have a bucket frame and oppositely disposed wall assemblies pivotally mounted in the bucket frame. The adjustable paper bucket may further include oppositely disposed vertical flanges, each of the vertical flanges being pivotally mounted to a respective one of the wall assemblies. A spindle flange is rotatably mounted to each vertical flange for accepting a media roll therebetween. A motion linkage connects the wall assemblies together such that a movement of one of the wall assemblies results in an equal and opposite movement of the other one of the wall assemblies.

A tape cartridge which is mounted in a tape printing apparatus provided with a detection part, includes a tape-shaped member which has a detection protrusion of which a lateral side partially protrudes in a tape width direction and a cartridge case in which a tape roll formed by winding the tape-shaped member into a roll shape is contained. In the tape cartridge, an exposed area is provided outside the cartridge case, the exposed area being where the detection protrusion provided in the tape-shaped member delivered from the tape roll and fed in a length direction of the tape-shaped member is exposed, the cartridge case has a cover which covers the tape-shaped member delivered from the tape roll in a tape feeding upstream side from the exposed area, and the cover includes a first cover, a second cover and a position regulating part.

A medium transporting device provided in a printer includes a curved path in which a paper sheet after recording is curved and inverted, a plurality of first ribs that extend in a medium transportation direction in a facing area facing a recording head, that are provided at intervals in a width direction intersecting the medium transportation direction, and that form cockling on the paper sheet, a plurality of second ribs that are provided on an outer curved portion of the curved path, and a plurality of third ribs that are provided on an inner curved portion of the curved path. The plurality of second ribs and the plurality of third ribs are disposed at positions in the width direction that correspond to a mountain portion and a valley portion of the cockling of the paper sheet that is formed by the plurality of first ribs.

An inkjet printer includes an air-permeable media-support-layer positioned on top of a vacuum table. The vacuum table includes a plurality of cavity rooms, connected to a vacuum source, for forming a plurality of vacuum zones on the air-permeable media-support-layer; each cavity room from the plurality of cavity rooms is closed by an air-permeable part from the air-permeable media-support-layer for forming a vacuum zone from the plurality of vacuum zones. Each cavity room from the plurality of cavity rooms includes a) a space formed by a set of walls; and b) a bottom layer including a set of air-channels; wherein a ratio of width to length from the minimum bounding box of the area formed by the set of walls is between 1:1 and 2:5.

In a case where a first tape cartridge is mounted on a cartridge mounting portion, in which the first tape cartridge that accommodates first tape and a first platen roller having a first roller length and a second tape cartridge that accommodates second tape and a second platen roller having a second roller length larger than the first roller length are mounted, a thermal head that performs printing onto the first tape is pressed against the first platen roller at first head pressing force, and in a case where the second tape cartridge is mounted on the cartridge mounting portion, the thermal head that performs printing onto the second tape is pressed against the second platen roller at second head pressing force larger than the first head pressing force.

A printing apparatus includes a platen including a first guide rail and a second guide rail mutually parallel in a width direction that intersects a transport direction of a medium; an edge holder including a plate-shaped member that covers an end portion of the medium in the width direction, a first engaging portion that engages with the first guide rail, and a second engaging portion that engages with the second guide rail; and a changing portion that is provided on the first engaging portion side and is for changing a position of the plate-shaped member in the width direction. A space in the transport direction formed between the first engaging portion and the first guide rail is narrower than a space in the transport direction formed between the second engaging portion and the second guide rail.

An image forming device includes an image forming unit to form an image on a work, a conveyance unit to convey the work in a predetermined conveyance direction, a conveyance guide member, a suction unit, and a suction control unit. The conveyance guide member is a plate-shaped member which has a plurality of suction holes and guides conveyance of the work by the conveyance unit from below. The suction unit includes a suction device which generates suction air by sucking air in a space on an upper side of the conveyance guide member via the plurality of suction holes, and closely contacts the work to the conveyance guide member by the suction air. The suction control unit changes a sucking force of the suction device according to a length in the work width direction of the work guided by the conveyance guide member.