子分类：
| 序号 | 专利名 | 申请号 | 申请日 | 公开（公告）号 | 公开（公告）日 | 发明人 |
|---|---|---|---|---|---|---|
| 121 | Rotary printing press drying assembly roller | US09771810 | 2001-01-29 | US06305098B1 | 2001-10-23 | Enrico Guglielmero |
| A roller for a rotary printing press drying assembly, comprising, near each printing unit, a drying assembly including a plurality of parallel rollers, each roller being circumferentially provided with a plurality of equispaced slots which are arranged parallel to the longitudinal axis of the cylinder. | ||||||
| 122 | Sheet guide unit for sheet-fed press | US09777658 | 2001-02-07 | US20010011509A1 | 2001-08-09 | Shinichi Fujimoto |
| The object of this invention is to provide a sheet guide unit for a sheet-fed press which will prevent the sheet from flapping or fluttering, and allow sheets of thinner paper to be conveyed smoothly even when a skeleton cylinder, which is better suited to thicker papers, for preventing the air streams exiting from both ends of the sheet guide surface from colliding with the frame and causing turbulence. The sheet guide unit according to this invention is provided under an intermediate cylinder or a delivery cylinder, and separated from the cylinders by a small sheet guide space for guiding the sheet. It has a curved sheet guide surface with which the lower surface of the cylinder creates the small sheet guide space, the space through which the air stream is directed; an air supply chamber which is behind the sheet guide surface; a plurality of air vents which vent air from the air supply chambers into the small sheet guide space, the air vents facing away from each other toward the sides of the cylinder on either side of its center line which vent air along the surface of the curved sheet guide surface along the width of the cylinder, so that the difference in the velocity of the air flow above and below the sheet being conveyed causes the sheet to be drawn toward the curved sheet guide surface and suspended slightly above the curved sheet guide surface as the sheet is conveyed; a pair of air aspiration chambers provided adjacent to the air supply chamber on the outer sides of the cylinder into which the air is aspirated; and an air guide fin which is an outer extended portion of the curved sheet guide surface into the air aspiration chamber, and serves for directing the air into the air aspiration chamber. The volume of air drawn out from the air aspiration chambers on either side of the cylinder is larger than the volume of air aspirated into the air aspiration chambers, so that a negative pressure in the vicinity of the both ends of the sheet guide surface is created. | ||||||
| 123 | Vacuum transfer apparatus for rotary sheet-fed printing presses | US08451121 | 1995-05-26 | US06269743B1 | 2001-08-07 | Howard W. DeMoore; Howard C. Secor |
| A vacuum assisted sheet transfer assembly has an array of support bars which support the unprinted side of a freshly printed sheet along a sheet transfer path. The support bars overlie the airflow inlet of a manifold housing, with the longitudinal axis of each support bar extending across the sheet transfer path. The support bars provide smooth surfaces for engaging and supporting the unprinted side of the sheet material as it is pulled along the transfer path while simultaneously limiting the flow of inlet air through elongated inlet apertures. As air is drawn through the inlet apertures, the unprinted side of the sheet is sucked into engagement with the support bars as it moves along the sheet transfer path. The sheet transfer assembly eliminates the need for conventional skeleton wheels and the like. Marking, smearing and smudging are prevented since the printed side of the sheet is not handled or contacted in any way as the sheet is conveyed along the sheet transfer path. | ||||||
| 124 | Method and apparatus for handling printed sheet material | US08379722 | 1995-01-27 | US06192800B1 | 2001-02-27 | Howard Warren DeMoore; John Andrew Branson |
| A support cylinder for guiding freshly processed substrate material between printing units or at the delivery end of a printing press is provided with a low coefficient of friction, semi-conductive covering for supporting and transporting the freshly processed substrate material without smearing the ink or causing indentations on the surface of the substrate. Radially projecting surface portions define electrostatic precipitation points and reduce the surface area available for frictional engagement. The low friction and electrostatically neutral properties of the semi-conductive base covering permit free movement of the freshly processed substrate relative to the support cylinder surface. Electrostatic charges carried by the processed substrate are discharged through the semi-conductive base covering into the support cylinder, thus eliminating electrostatic cling attraction between the freshly processed substrate and the support cylinder. | ||||||
| 125 | Sheet guiding device in a sheet-fed printing press | US299896 | 1999-04-27 | US6135026A | 2000-10-24 | Jens Kalbantner; Josef Wehle |
| A sheet guiding device assemblable from at least a first sheet guiding element and a second sheet guiding element, for guiding sheets of printing material in a sheet-fed printing press, includes a guide for guiding at least one of the sheet guiding elements as the sheet guiding elements are being mutually assembled. | ||||||
| 126 | Transport drum in rotary printing presses | US174295 | 1998-10-16 | US6105499A | 2000-08-22 | Karl-Heinz Helmstadter; Raimund Schroder |
| A transport drum in a rotary printing press, having a covering for preventing a fresh printed product from being smeared when the printed product is being transported through the press, the covering being secured to the jacket surface of the transport drum and being formed of a carrier material, includes resiliently embodied filamentary support elements secured in the carrier material of the covering, and an ink-repellent material applied to outer ends, respectively, of the support elements. | ||||||
| 127 | Web-fed rotary printing press with apparatus for diverting a wet printed web | US114544 | 1998-07-13 | US6095047A | 2000-08-01 | David Robert Dawley |
| A lithographic web-fed rotary printing press (1) comprises an apparatus (8a, 8b, 8c, 8d) for diverting a wet printed web (4), e.g. in order to pass it around a downstream printing unit (2b) of the press (1). Each diverting apparatus (8a, 8b, 8c, 8d) includes a diverting roll (12) having a hydrophilic surface, to which water solution 14, preferably dampening solution, as it is used in dampening systems of a lithographic rotary printing press, is supplied by a spray nozzle arrangement (22), or by an applicator roller (16) which is in contact with a pan roller (20) for transferring the water solution (14) from a reservoir (18). | ||||||
| 128 | Method and apparatus for smear-free guidance of a printed sheet on a sheet-guiding cylinder of a printing press | US50658 | 1998-03-30 | US5979318A | 1999-11-09 | Karl-Heinz Helmstadter |
| A method for smear-free guidance of a printed sheet on a given sheet-guiding cylinder of a printing press includes taking over a leading edge of the sheet by a gripper device of the given sheet-guiding cylinder from a preceding or up-line sheet-guiding cylinder and, after the take-over of the leading edge of the sheet by the gripper device, fixing a first section of the underside of the sheet to the circumferential surface of the preceding or up-line sheet-guiding cylinder in a manner that the sheet, which has been pushed onwardly by the preceding or up-line sheet-guiding cylinder, is kept spaced from the circumferential surface of the given sheet-guiding cylinder, and the circumferential surface of the given sheet-guiding cylinder is located, as viewed in radial direction, within a circular path described by the gripper device during the rotation of the given cylinder. | ||||||
| 129 | Method and apparatus for handling sheet material | US67753 | 1998-04-27 | US5915305A | 1999-06-29 | Donald A. Ward; Stephan D. Ward |
| A printed product transfer assembly for supporting and carrying printed product from one station in a printer apparatus to another station includes a transfer structure including a product conveying surface, a blanket including fiberglass having several outwardly protruding fiberglass fibers and being secured snugly over the conveying surface; a flexible resilient material secured snugly over the blanket and engaged against circumferential movement relative to the blanket by the fiberglass fibers, and having several ridges for engaging and conveying the printed products and for cushioning the printed products to prevent marring of printing ink. The printed product transfer assembly preferably still further includes a delivery shaft; a transfer cylinder including releasibly interconnected first and second longitudinal cylinder half portions, each half portion including an arched outer shell segment forming a portion of a printed product conveying surface and first and second shell segment half hub structures secured respectively within and to the first and second longitudinal cylinder half portions, the half hub structures including delivery shaft receiving structure and hub inter-connection elements releasibly joining the first and second half hub structures together; and a transfer cylinder anti-rotation collar for fixing the transfer cylinder against rotation about and relative to the delivery shaft. | ||||||
| 130 | Method and apparatus for handling printed sheet material | US528701 | 1995-09-15 | US5603264A | 1997-02-18 | Howard W. DeMoore; John A. Branson |
| A transfer cylinder for supporting freshly printed sheet material between printing units or at the delivery unit of a printing press is provided with an ink repellent, flexible jacket covering for supporting and transporting the sheet material without transfer of wet ink from one sheet to a successive sheet and without smearing the ink or causing indentations on the surface of the sheet material. The circumferential support surface of the transfer cylinder is covered with a conductive, fluoropolymer layer secured to the surface of the transfer cylinder beneath the protective, wash-free disposable flexible jacket covering. The low friction properties of the conductive base covering permit free movement of the ink repellent, flexible jacket covering relative to the transfer cylinder surface. Electrostatic charges delivered to the flexible jacket covering by the printed sheet material are drawn away from the flexible jacket covering and are discharged into the transfer cylinder by the conductive base covering. | ||||||
| 131 | Dual substrate, single-pass printing process and substrates printed thereby | US440430 | 1995-05-12 | US5597642A | 1997-01-28 | Robert J. Schleinz; Daniel J. Conrad; Joseph S. Kucherovsky |
| A dual substrate, single-pass printing process prints a high basis weight substrate and a low basis weight substrate. Ink striking through the low basis weight substrate is collected and absorbed by the high basis weight substrate. The printed substrates are then separated and rewound for subsequent transport and handling. | ||||||
| 132 | Device for smear-free sheet transport in an offset printing press | US312319 | 1994-09-26 | US5564692A | 1996-10-15 | Kurt Lotsch; Bernd Ruf |
| Device for smear-free transport of sheets having fresh printing ink thereon on a revolvingly driven cylinder in a sheet-fed printing press includes air outlet openings for pressurized air provided on the circumference of the revolvingly driven cylinder in a sheet-bearing region thereof for bearing the sheet to be transported, and a fixed covering for closing the air outlet openings on the inside of the revolvingly driven cylinder prior to a takeover of the sheet to be transported by the revolvingly driven cylinder. | ||||||
| 133 | Sack net for printing press anti-smear transfer cylinder | US941226 | 1992-09-04 | US5413044A | 1995-05-09 | William B. Wu; Brian Yu |
| A ready-made fabric sack with an elastic string around the periphery of the sack opening to be placed over a transfer cylinder in a printing press. When placed over the transfer cylinder, the inherent resiliency of the fabric and string causes the sack to envelop the cylinder to provide a resilient fabric surface which prevents smearing and streaking of wet printed sheets. | ||||||
| 134 | Sheet-guiding impression-cylinder casing profile | US27684 | 1993-03-08 | US5343807A | 1994-09-06 | Gerhard Hackelborger; Werner Sondergeld |
| An improved surface casing for a sheet-guiding printing cylinder comprising a number of elevations having constant cross-sectional areas extending radially therefrom to form a sheet bearing surface. The constant cross-sectional area over the length of the elevations ensures that as the elevations are worn down over time, the overall bearing area does not increase. As a result, smearing of the printing image, which is related to the total bearing area, does not increase over time. Additionally, the total bearing area does not increase for sheets having a low paper weight due to sagging of the sheet between the elevations. | ||||||
| 135 | Adjustable sheet guide assembly | US10579 | 1993-01-28 | US5259309A | 1993-11-09 | Jurgen A. Stiel; Jurgen F. F. Munker; Karl Preu.beta.; Erich G. Wieland |
| An adjustable sheet guide assembly utilizes a plurality of individually shiftable sheet guide elements. Each of these sheet guide elements is carried by a sleeve which is concentric about a hollow profile body that carries a rotatable, helically fluted shaft. Guide pins on the sleeves are received in the shaft's flutes so that rotation of the shaft or movement of one sheet guide element causes movement of all of the sheet guide elements in the adjustable sheet guide assembly. | ||||||
| 136 | Sheet transfer web | US562850 | 1990-08-06 | US5050500A | 1991-09-24 | Wolfgang C. J. Spiess |
| A sheet transfer drum for a rotary printing machine utilizes a plurality of sheet carrying segments which are axially adjustably positioned along a rotatable shaft. Each sheet carrying segment uses an upper bow and a lower bow with each bow, in turn, carrying a plurality of spaced sheet supporting elements. One of the sheet carrying bows is pivotable to actuate a cam-like fast acting closure or latch used to secure each sheet carrying segment to the shaft. | ||||||
| 137 | Anti-marking method and apparatus for use with perfector cylinders of rotary sheet-fed printing presses | US516523 | 1990-04-30 | US5042384A | 1991-08-27 | Howard W. DeMoore; Howard C. Secor |
| A method and apparatus for use with a grooved perfecting cylinder in a sheet-fed rotary printing press of the type capable of one sided or two sided sheet printing, the apparatus including a substantially rigid covering having a friction reducing coating thereon and which can be quickly and easily installed and removed over the sheet supporting surface of the perfecting cylinder when the press is operated in the one sided printing mode to permit an anti-marking fabric net to be installed and used over the sheet supporting surface of the perfecting cylinder. | ||||||
| 138 | Impression cylinder with domelike surface portions of uniform height | US815776 | 1986-01-02 | US5042383A | 1991-08-27 | Arno Wirz |
| A sheet guiding cylinder of a rotary printing press includes a cylindrical member, at least the outer surface portion of which is formed of chemically resistant, wear-resistant and unyielding material and has a multiplicity of elevated solid surface portions consisting of a distribution of domelike structures of uniform height formed thereon. | ||||||
| 139 | Transfer cylinder for printing press | US400694 | 1989-08-30 | US5009160A | 1991-04-23 | Eduardo Duarte |
| A transfer cylinder for a printing press having a film of polycarbonate bonded to the surface. The film has a matte surface over which a film of silicone is applied. | ||||||
| 140 | Air blast for preventing contact of wet ink sheets with printing press delivery mechanisms | US891955 | 1986-08-01 | US4722276A | 1988-02-02 | Jack D. Tyler |
| A printing press has an apparatus for preventing contact of wet ink sheets with the chain delivery mechanism. The printing press has an impression cylinder and a blanket cylinder through which sheets are drawn by the chain delivery mechanism. The chain delivery mechanism has two sprockets mounted to a shaft, each of which rotates runs of chain to pull the sheets from the cylinders. A nozzle is mounted adjacent the shaft for discharging jets of air against the sheets to push them away from the shaft. An air compressor supplies air to the nozzle. A regulator valve allows the pressure at the nozzle to be varied depending upon the type of sheets. | ||||||
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