A sheet conveyer, including a first guide with a guide surface, a second guide arranged on a side of the guide surface toward one end in a widthwise direction, a first roller arranged upstream in a conveying direction from the second guide to rotate about a first axis extending in parallel with the widthwise direction, a second roller arranged downstream in the conveying direction from the first roller to rotate about a second axis inclined with respect to the widthwise direction, and a third roller arranged downstream in the conveying direction from the second roller at a position on a side of the guide surface toward the other end in the widthwise direction outside a widthwise length of the sheet, is provided. The third roller is configured to rotate about a third axis inclined with respect to the widthwise direction.

A sheet conveyer, including a first guide with a guide surface, a second guide arranged on a side of the guide surface toward one end in a widthwise direction, a first roller arranged upstream in a conveying direction from the second guide to rotate about a first axis extending in parallel with the widthwise direction, a second roller arranged downstream in the conveying direction from the first roller to rotate about a second axis inclined with respect to the widthwise direction, and a third roller arranged downstream in the conveying direction from the second roller at a position on a side of the guide surface toward the other end in the widthwise direction outside a widthwise length of the sheet, is provided. The third roller is configured to rotate about a third axis inclined with respect to the widthwise direction.

An air-floating thin film bonding apparatus and its air-floating roller is provided. The apparatus is composed of an air-floating rollers, which can blow out airflow at a specific angle to be applied to the base film with three-dimensional obstacles. The positive pressure provided by the airflow can be utilized to fill the gap space caused by the three-dimensional obstacles. Therefore, the base film can bond to the bonding film tightly to overcome the wrinkles and defects caused by the three-dimensional obstacle and the problem of unflatness of the film-bonding can be solved.

An air-floating thin film bonding apparatus and its air-floating roller is provided. The apparatus is composed of an air-floating rollers, which can blow out airflow at a specific angle to be applied to the base film with three-dimensional obstacles. The positive pressure provided by the airflow can be utilized to fill the gap space caused by the three-dimensional obstacles. Therefore, the base film can bond to the bonding film tightly to overcome the wrinkles and defects caused by the three-dimensional obstacle and the problem of unflatness of the film-bonding can be solved.

A roller (10) for converting tape material comprises a cylindrical pressure surface (11) defined by a coating element (21) made of resilient material of predefined hardness applied over a plurality of resilient annular pressure elements (15) made of elastic deformable material arranged axially side by side, so as to obtain an overall elastic yielding of the roller (10) independent from the superficial elastic yielding.

A roller (10) for converting tape material comprises a cylindrical pressure surface (11) defined by a coating element (21) made of resilient material of predefined hardness applied over a plurality of resilient annular pressure elements (15) made of elastic deformable material arranged axially side by side, so as to obtain an overall elastic yielding of the roller (10) independent from the superficial elastic yielding.

A roller device for guiding a flexible substrate is described. The roller device includes a support surface for contacting the flexible substrate, the support surface having a coating comprising an electronegative polymer. Further, a vacuum processing apparatus for processing a flexible substrate including the roller device and a method of processing a flexible substrate in the vacuum processing apparatus is described.

A coil feeding device and a graphic machine thereof are provided. The coil feeding device includes a roller mechanism for carrying a coiled material, a base mechanism, and a compression rod mechanism. The roller mechanism includes a shaft penetrating through the shaft hole and a tension structure disposed on the shaft. The tension structure includes a first sleeve, a second sleeve and a tapered fixing member. When the first sleeve and the second sleeve are fixed to each other, the tapered fixing member holds the shaft to achieve mutual fixation of the coiled material and the shaft. By providing the second sleeve, the first sleeve and the tapered fixing member that cooperate with each other, the coiled material and the shaft are fastened to each other quickly, thereby improving production efficiency. Through the base mechanism, the coil feeding device is directly used on existing graphic machine for material processing.

Methods and apparatus for transporting a flexible substrate are provided. In one embodiment, an air turn is disclosed that includes a body, a porous cover disposed about a circumference of the body, and two seals. Each of the two seals are positioned about the circumference of the body and spaced apart from each other in a longitudinal direction of the body to define a central zone bounded by a second zone and by a third zone. The second zone and third zone are each positioned outside of a respective seal. The body includes a first opening formed along a longitudinal axis of the body, and a plurality of second openings formed in the body at a position other than along the longitudinal axis.

A roller structure is disclosed and includes at least one roller unit. The roller unit includes a base, an elastic portion, a supporting portion and a rotating wheel. The base is configured to detachably assemble the roller unit on an accommodation seat. The base includes a first lateral edge. The elastic portion is disposed on the base and connected with the first lateral edge. The elastic portion includes a bent section having an end extending and bent from the first lateral edge. The supporting portion is disposed on the elastic portion and connected to the other end of the bent section. The rotating wheel is pivotally connected to the supporting portion. When the rotating wheel is pressed by a driving wheel, the supporting portion is driven to compress the elastic portion to move the rotating wheel toward the base, and the rotating wheel is driven to rotate relative to the supporting portion.