Patents by Inventor Robert M. Landsman
Robert M. Landsman has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
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Patent number: 6640713Abstract: An improved offset printing press has a single plate blanket image (PBI) cylinder for holding an image formed on a thin film printing plate affixed thereto. The plate may be from 0.5 to 25 microns thick and has a thin layer of ink repelling material coated thereon. The plate is imaged, after being affixed to the PBI cylinder, by ablating selective portions of the ink repelling coating. The PBI cylinder is constructed to hold the printing plate by vacuum techniques, and apparatus to load and unload the plate is associated with the PBI cylinder. Because of the thinness of the printing plate, the PBI cylinder is a compliant surface, capable of printing on an inelastic media covered impression cylinder. In addition, unique inking apparatus is provided to transfer ink to the imaged printing plate. Variations of the press include a four color press utilizing a single PBI cylinder.Type: GrantFiled: November 6, 2002Date of Patent: November 4, 2003Assignee: Creo IL. LTDInventor: Robert M. Landsman
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Publication number: 20030089261Abstract: An improved offset printing press has a single plate blanket image (PBI) cylinder for holding an image formed on a thin film printing plate affixed thereto. The plate may be from 0.5 to 25 microns thick and has a thin layer of ink repelling material coated thereon. The plate is imaged, after being affixed to the PBI cylinder, by ablating selective portions of the ink repelling coating. The PBI cylinder is constructed to hold the printing plate by vacuum techniques, and apparatus to load and unload the plate is associated with the PBI cylinder. Because of the thinness of the printing plate, the PBI cylinder is a compliant surface, capable of printing on an inelastic media covered impression cylinder. In addition, unique inking apparatus is provided to transfer ink to the imaged printing plate. Variations of the press include a four color press utilizing a single PBI cylinder.Type: ApplicationFiled: November 6, 2002Publication date: May 15, 2003Inventor: Robert M. Landsman
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Patent number: 6477955Abstract: An improved offset printing press has a single plate blanket image (PBI) cylinder for holding an image formed on a thin film printing plate affixed thereto. The plate may be from 0.5 to 25 microns thick and has a thin layer of ink repelling material coated thereon. The plate is imaged, after being affixed to the PBI cylinder, by ablating selective portions of the ink repelling coating. The PBI cylinder is constructed to hold the printing plate by vacuum techniques, and apparatus to load and unload the plate is associated with the PBI cylinder. Because of the thinness of the printing plate, the PBI cylinder is a compliant surface, capable of printing on an inelastic media covered impression cylinder. In addition, unique inking apparatus is provided to transfer ink to the imaged printing plate. Variations of the press include a four color press utilizing a single PBI cylinder.Type: GrantFiled: August 19, 1997Date of Patent: November 12, 2002Assignee: Creo Il. Ltd.Inventor: Robert M. Landsman
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Patent number: 5764381Abstract: An internal drum recorder images a media to a radiation pattern using an image array, which extends along a primary track, such as a helical track, and in a direction essentially perpendicular to the primary track. In one embodiment, the source of radiation is a laser aimed along the longitudinal axis of the drum, deflected and applied through a light modifier within a spinner. The light modifier is a device breaking the single laser beam into a number of sub-beams. Alternately, a number of laser diodes rotating within a translatable spinner may be used to produce the image. A gripper bar rotating about the longitudinal axis of the drum facilitates introducing and removing new sheets into the drum. A focus detector rotating within the spinneris used to correct the radial distance to the media surface from the spinner.Type: GrantFiled: July 10, 1996Date of Patent: June 9, 1998Assignee: Scitex Corporation Ltd.Inventor: Robert M. Landsman
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Patent number: 4813321Abstract: A film transport mechanism for extracting film from one or more cassettes, and for slicing a sheet of the film and storing the sheet at a temporary storage apparatus until the sheet is to be loaded. The mechanism includes a film guide which moves between two positions to alter the path length of film passing over it. As film is extracted the film exerted a force on the film guide causing the film guide to move. When the film is cut the force of the film guide disappears enabling the film guide to return to its relaxed position into the path of the film so as to increase the path length and thereby retract the film passing over the film guide.Type: GrantFiled: June 5, 1987Date of Patent: March 21, 1989Assignee: Powers Chemco, Inc.Inventor: Robert M. Landsman
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Patent number: 4792858Abstract: An optical scanning system for (i) scanning images from film transparencies or reflective copy, and for (ii) reproducing images onto film or photosensitive paper to prepare films, printing plates and the like. A paten assembly having two platens, each platen having an image area, is rotatable between positions to selectively locate one of the platens in an orientation for scanning an image area of such platen. A scanner traces scan lines across the image area in a first direction as a gantry assembly transports the scanner over the image area in a second direction. When scanning an image (as opposed to scanning to reproduce an image), photodetectors detect light either transmitted through a film containing an image or reflected from a reflective copy containing an image. The photodetector is sampled by a system computer. When scanning to reproduce an image, a film is loaded onto a platen and the scanner scans in raster fashion over the film.Type: GrantFiled: June 5, 1987Date of Patent: December 20, 1988Assignee: Powers Chemco, Inc.Inventor: Robert M. Landsman
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Patent number: 4764815Abstract: A scanning apparatus for the array scanning of information upon a record medium to simultaneously develop a multiplicity of information lines. Scanning is carried out by a reciprocating shuttle traversing the width of the scanning area. The record medium to be scanned is mounted on a platen that undergoes periodic longitudinal advancement through a distance corresponding to the width of the band traced by the scanning array. The platen advances when the shuttle is undergoing its reversal. Precise incrementing of the platen is achieved by the positioning of a reference element during the active scanning segment of the shuttle and then locking the reference element in position. The platen is then quickly advanced into contact with the reference element during the short reversal of time of the shuttle. Springs are used to help reverse the direction of travel of the shuttle at each end of its reciprocating scan.Type: GrantFiled: June 24, 1985Date of Patent: August 16, 1988Assignee: Powers ChemcoInventor: Robert M. Landsman
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Patent number: 4362805Abstract: A conveying mechanism and flexible carrier for transporting a planar printing plate and flexible overlying mask from a flat loading station to a precisely-curved cylindrically-shaped scanning station, and back to the flat loading station, is disclosed. The vacuum carrier used is rigid in one axis and flexible in a second axis, and has a pair of reference strips which define a neutral bending axis for the plate and mask when the latter are wrapped around a pair of precisely machined cylindrical discs. By locating the flexible mask and printing plate outside the neutral axis of bending, both are placed in tension when wrapped around the discs. This maintains uniform contact between the plate and mask and prevents wrinkling of the mask as it overlies the plate.The carrier and discs support the plate and mask within a precise and uniform cylindrical plane for scanning with focussed beams of radiation.Type: GrantFiled: July 7, 1980Date of Patent: December 7, 1982Assignee: Logescan Systems Inc.Inventor: Robert M. Landsman
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Patent number: 4334770Abstract: A conveying mechanism and flexible carrier for transporting a planar printing plate and flexible overlying mask from a flat loading station to a precisely-curved cylindrically-shaped scanning station, and back to the flat loading station, is disclosed. The vacuum carrier used is rigid in one axis and flexible in a second axis, and has a pair of reference strips which define a neutral bending axis for the plate and mask when the latter are wrapped around a pair of precisely machined cylindrical discs. By locating the flexible mask and printing plate outside the neutral axis of bending, both are placed in tension when wrapped around the discs. This maintains uniform contact between the plate and mask and prevents wrinkling of the mask as it overlies the plate.The carrier and discs support the plate and mask within a precise and uniform cylindrical plane for scanning with focussed beams of radiation.Type: GrantFiled: July 7, 1980Date of Patent: June 15, 1982Assignee: LogEtronics, Inc.Inventor: Robert M. Landsman
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Patent number: 4262594Abstract: A conveying mechanism and flexible carrier for transporting a planar printing plate and flexible overlying mask from a flat loading station to a precisely-curved cylindrically-shaped scanning station, and back to the flat loading station, is disclosed. The vacuum carrier used is rigid in one axis and flexible in a second axis, and has a pair of reference strips which define a neutral bending axis for the plate and mask when the latter are wrapped around a pair of precisely machined cylindrical discs. By locating the flexible mask and printing plate outside the neutral axis of bending, both are placed in tension when wrapped around the discs. This maintains uniform contact between the plate and mask and prevents wrinkling of the mask as it overlies the plate.The carrier and discs support the plate and mask within a precise and uniform cylindrical plane for scanning with focussed beams of radiation.Type: GrantFiled: December 22, 1978Date of Patent: April 21, 1981Assignee: LogEscan Systems, Inc.Inventor: Robert M. Landsman
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Patent number: 4139243Abstract: A hollor tubular shaft containing optical elements for a laser-type facsimile transceiver employing helical scanning is horizontally supported by air bearings, and translated along its major axis by means of a piston and pneumatic cylinder coaxial with the shaft. An integral reaction-powered air motor provides shaft rotation, and a fail-safe automatic control and braking system prevents damage to the scanning mechanism in the event of interruption of the pneumatic or electrical supplies by permitting physical shaft-to-bearing contact only in the absence of shaft rotation and translational motion. The apparatus finds particular utility in the production of printing plates for use in the Graphic Arts.Type: GrantFiled: December 23, 1976Date of Patent: February 13, 1979Assignee: LogEtronics, Inc.Inventor: Robert M. Landsman
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Patent number: 4131916Abstract: A hollow tubular shaft, containing optical elements for use in a helical scanning facsimile transceiver, is supported horizontally by air bearings and translated linearly along its major axis through cylindrical reading and writing stations by means of a pneumatic cylinder and piston coaxial with the shaft. An integral reaction-powered air motor provides shaft rotation, and laser beams perform the reading and writing operations, both of which may take place within the same apparatus or either one of which may be executed at a location remote from that of the other.The reading station contains an optical encoding pattern enabling continuous control of the position of the radiation beams relative to the indicia being read, and an electronic memory facilitates the temporary storage and manipulation of information to be recorded by the writing station. A fail-safe system prevents damage to the scanning mechanism in the event of interruption of the pneumatic or electrical supplies.Type: GrantFiled: December 31, 1975Date of Patent: December 26, 1978Assignee: LogEtronics, Inc.Inventor: Robert M. Landsman
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Patent number: 4064205Abstract: A thermoplastic plate, for example one of polypropylene or nylon, fabricated so it has an open-cell structure, has a radiation transparent cover sheet applied to one face thereof. The cover sheet has an energy absorbing coating (e.g. of carbon and nitrocellulose) in intimate contact with the plate. A modulated laser beam is then transmitted through said cover sheet to selectively transfer some of the energy absorbing material to the plate according to the configuration required to define the areas of relief desired in the plate. The cover sheet is then removed except for the portion of the energy absorbing coating transferred to the plate. The entire surface of the plate is then exposed to infra-red rays.Type: GrantFiled: July 2, 1974Date of Patent: December 20, 1977Assignee: LogEtronics, Inc.Inventor: Robert M. Landsman
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Patent number: 3999918Abstract: A thermoplastic plate, for example one of polypropylene or nylon, fabricated so it has an open-cell structure, has a radiation transparent cover sheet applied to one face thereof. The cover sheet has an energy absorbing coating (e.g. of carbon and nitrocellulose) in intimate contact with the plate. A modulated laser beam is then transmitted through said cover sheet to selectively transfer some of the energy absorbing material to the plate according to the configuration required to define the areas of relief desired in the plate. The cover sheet is then removed except for the portion of the energy absorbing coating transferred to the plate. The plate is heated (either before or after the foregoing steps) to a temperature just below the temperature at which the thermoplastic radically changes viscosity. The entire surface of the plate is then exposed to infra-red rays.Type: GrantFiled: May 28, 1975Date of Patent: December 28, 1976Assignee: Log Etronics Inc.Inventor: Robert M. Landsman
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Patent number: 3991145Abstract: A thermoplastic plate, for example, one of polypropylene or nylon, fabricated so it has an open-cell structure, has a radiation transparent cover sheet applied to one face thereof. The cover sheet has an energy absorbing coating (e.g. of carbon and nitrocellulose) in intimate contact with the plate. A modulated laser beam is then transmitted through said cover sheet to selectively transfer some of the energy absorbing material to the plate according to the configuration required to define the areas of relief desired in the plate. The cover sheet is then removed except for the portion of the energy absorbing coating transferred to the plate. The entire surface of the plate is then exposed to infra-red rays.Type: GrantFiled: May 28, 1975Date of Patent: November 9, 1976Assignee: Log Etronics Inc.Inventor: Robert M. Landsman
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Patent number: 3961132Abstract: Continuous-tone original picture information, such as a photograph or original art work, is put into a form suitable for halftone printing reproduction by raster-scan reading of the original to produce a varying video signal. The video signal is rendered suitable for writing in a high speed writer by continuously convolving (weighting, multiplying) said signal with stored halftone dot data (attenuation) signals obtained from a Read Only Memory, and applying the resultant treated signals, through a quantizer, to control a beam of radiation to expose a sensitive printing or recording medium to a halftone image pattern in which each dot is configured to provide optimum image information transfer to the reproduction medium. Simulations of the effects of conventional "bump" and "flash" exposures, and of other screenmodifying parameters, can be introduced as desired, and suitable apparatus combinations for performing all these operations are disclosed.Type: GrantFiled: July 15, 1974Date of Patent: June 1, 1976Assignee: Log Etronics Inc.Inventor: Robert M. Landsman
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Patent number: 3945318Abstract: This is a lithographic printing plate blank adapted to be processed by applying a beam of laser radiation through a radiation transparent sheet to transfer selected portions of a combustible coating material on the sheet onto a lithographic surface; the lithographic surface provides a hydrophilic background on which oleophilic printing areas are provided by the transferred material. In the composite blank the coated sheet is held electrostatically in intimate contact with the lithographic surface, which is a grained surface, so that the coated surface and lithographic surface are maintained in intimate contact in spite of the generation of gases therebetween due to the laser initiated combustion which would ordinarily tend to separate the surfaces and reduce resolution. The coated sheet is provided with an electrostatic charge during manufacture of the composite sheet, either by manually inducing the charge or by building the charge into the sheet to make it an electret.Type: GrantFiled: April 8, 1974Date of Patent: March 23, 1976Assignee: LogEtronics, Inc.Inventor: Robert M. Landsman