Abstract: A technique allows satisfactory removal of ink droplets adhering to the ejection surface of an ejection head while preventing the occurrence of performance degradation of the ejection surface. A printer performs printing by ejecting ink droplets to an upper surface of a long band-like base material (M). The printer includes an ejection head and a cleaner. The ejection head has an ejection surface in which a plurality of ink ejection outlets for ejecting ink droplets are arranged in a width direction (X). The cleaner cleans the ejection surface. The cleaner includes a gas ejector. The gas ejector ejects gas to the ejection surface from a position away from the ink ejection outlets in the Y direction.

Abstract: A front winding base frame (1A) and a rear winding base frame (1B) are respectively provided with winding arms (3A and 3B) that hold winding shafts (4A and 4B) so as to be capable of ascending and descending vertically, and the winding arms (3A and 3B) are attached to the front winding base frame (1A) and the rear winding base frame (1B) so as to be capable of being exchanged between the front winding base frame (1A) and the rear winding base frame (1B). A front-side touch roller frame (13A) and a rear-side touch roller frame (13B) are respectively provided with touch rollers (16A and 16B) so as to be capable of ascending and descending vertically, and the touch rollers (16A and 16B) are attached to the front-side touch roller frame (13A) and the rear-side touch roller frame (13B) so as to be capable of being exchanged between the front-side touch roller frame (13A) and the rear-side touch roller frame (13B).

Abstract: A front winding base frame (1A) and a rear winding base frame (1B) are respectively provided with winding arms (3A and 3B) that hold winding shafts (4A and 4B) so as to be capable of ascending and descending vertically, and the winding arms (3A and 3B) are attached to the front winding base frame (1A) and the rear winding base frame (1B) so as to be capable of being exchanged between the front winding base frame (1A) and the rear winding base frame (1B). A front-side touch roller frame (13A) and a rear-side touch roller frame (13B) are respectively provided with touch rollers (16A and 16B) so as to be capable of ascending and descending vertically, and the touch rollers (16A and 16B) are attached to the front-side touch roller frame (13A) and the rear-side touch roller frame (13B) so as to be capable of being exchanged between the front-side touch roller frame (13A) and the rear-side touch roller frame (13B).

Abstract: A winding apparatus, such as a slitter rewinder, designed to shorten a distance between an unwinding shaft and a winding shaft, thereby downsizing the apparatus and attaining a significant cost reduction. To that end, in unwinding a web from the unwinding shaft, either to wind it onto the winding shaft or to slit it in the elongate direction into plural narrow-width webs and separate them alternately vertically or longitudinally, followed by winding onto respective winding shafts, the unwinding shaft is driven at a preset web speed, the winding shaft is driven at a preset web tension, guide rollers for guiding the web are disposed between the unwinding and winding shafts to thereby leave the guide rollers to rotate freely by contact with the web without their direct driving.

Abstract: In a winding apparatus, such as a slitter rewinder, designed to shorten a distance between an unwinding shaft and a winding shaft thereby downsizing the apparatus and attaining a significant cost reduction. To that end, in unwinding a web from the unwinding shaft, either to wind it onto the winding shaft or to slit it in the elongate direction into plural narrow-width webs and to separate them alternately vertically or longitudinally, followed by winding onto respective winding shafts, the unwinding shaft is driven at a preset web speed, the winding shaft is driven at a preset web tension, guide rollers for guiding the web are disposed between the unwinding and winding shafts thereby to leave the guide rollers in free rotation by contact with the web without their positive driving.

Abstract: In winding up a sheet web coated with a tacky adhesive, a roll changing method is provided which obviates the necessity of applying an adhesive. When changing the sheet web from a full wind roll wound up on a turret winder to a new core tube, the new core tube is revolved in reverse to the rotational direction of the turret, the sheet is cut between the full wind roll now turned by the turret and the new core tube revolving in reverse to it at a winding location, the adhesive side of the end of the cut sheet in the running direction is pressed and attached to the surface of the new core tube under reverse revolution and concurrently, the attached sheet is folded back, and the sheet web continuing from it is wound onto the new core tube, with its adhesive side being a surface side.

Abstract: In winding up a sheet web coated with a tacky adhesive, to provide a roll changing method obviating the necessity of applying adhesive. When changing the sheet web from a full wind roll wound up on a turret winder to a new core tube, the new core tube is revolved in reverse to the rotational direction of the turret, the sheet is cut between the full wind roll now turned by the turret and the new core tube revolving in reverse to it at a winding location, the adhesive side of the end of the cut sheet in the running direction is pressed and attached to the surface of the new core tube under reverse revolution and concurrently, the attached sheet is folded back, and the sheet web continuing from it is wound onto the new core tube, with its adhesive side being a surface side.

Abstract: A web winding device versatilely adaptable to a web wound on a winding shaft, e.g., physical properties, thickness, width, winding speed, etc. and yielding an optimal wind roll without entrained air. It contains a touch roller disposed in pressure contact with a wind roll at a web approaching position to it, a guide roller provided adjacently, upstream of the touch roller, and touch roller arms provided with both rollers, the touch and guide rollers being arranged so that the approaching direction of the web to the guide roller and the wrapping direction on the wind roll in pressure contact with the touch roller are kept in parallel and the position of the guide roller is controllable vertically, permitting the regulation of the web approaching angle to the touch roller in pressure contact with the wind roll.

Abstract: A touch roller device, adaptable by itself to versatility of a web wound on a winding shaft, e.g., physical properties, thickness, width, winding speed, etc. and permitting to yield an optimal wind roll without entrained air. It comprises a touch roller disposed in pressure contact with a wind roll at a web approaching position to it, a guide roller provided adjacently, upstream of the touch roller, and touch roller arms provided with both rollers, the touch and guide rollers being arranged so that the approaching direction of the web to the guide roller and the wrapping direction on the wind roll in pressure contact with the touch roller are kept in parallel and the position of the guide roller is controllable vertically, permitting to regulate the web approaching angle to the touch roller in pressure contact with the wind roll.

Abstract: A core shaft having lugs protruding from its outer circumference to grip winding cores such as a paper tube is provided, wherein the movement of the lugs within a shell of the shaft is inhibited thereby to secure concentrical gripping of the winding cores with the core shaft and to prevent from decentering and vibration or runout of the winding cores, eventually enabling a smooth winding or unwinding of a sheet material.

Abstract: A two-shaft linear motion type winder for winding up a sheet material, e.g. a film is provided, which can eliminate the occurrence of any mechanical loss by simplification of a transission device, shorten the path distance of the film upon roll changing, prevent the neck-in and wrinkling of the film and reduce vastly the roll changing cycle. It comprises at least a pair of upper-stage winding frames having holders for an upper winding shaft, suspended from an upper main frame to be slidingly movable back and forth in a given area; and a pair of lower-stage winding frames having holders for a lower winding shaft, disposed on a lower main frame to face upwards so as to be slidingly movable longitudinally in a given area.

Abstract: Automatic slitter rewinder machine which includes a plurality of pairs of core-holding frames for releasably mounting a core therebetween and for winding up on the cores slit narrow web sheets to full rolls and automatic delivery apparatus for cooperating with the pairs of core-holding frames after winding-up to conduct a series of automatic roll changing steps for the next winding. The pairs of core-holding frames are suspended to be slidably movable. The automatic delivery apparatus is disposed below the pairs of core-holding frames and has a roll delivery carriage including a wrapping device for cut trailing ends of unloaded full rolls, a carriage for transferring the full rolls outside the machine, a conveyor for carrying and discharging the rolls, and a lifter for the conveyor, the wrapping device having swing rollers capable of moving toward and away from each other so as to conduct the wrapping and to carry the full rolls onto the conveyor.

Abstract: An end-trimming apparatus for roll-like products. The apparatus trims both ends of a roll comprising a sheet-like material wound up on a core, particularly, stretchable one such as plastics film, by cutting off the irregularity of both the ends, finishing them into flat faces. It comprises a conveying means for carrying rolls horizontally to a given location, a supporting means of a pair of chucks for supporting the roll at both the ends, while providing it with a rotation in the winding direction of the roll, and a cutting means provided close to the pair of chucks, including a pair of disk cutters arranged co-axially and having respectively separate shafts parallel with the shafts of the chucks, the disk cutters being capable of moving toward and away from each other and of reciprocating in the direction at right angle to said toward-and-away motion.