Abstract: In accordance with the invention, there is provided a reproduction method including forming a toner image on a moving primary image-forming member (PIFM) which is a first double-sleeved roller including a rigid cylindrical core member, a replaceable removable compliant inner sleeve member (ISM) in nonadhesive intimate contact with and surrounding the core member, and a replaceable removable photoconductive outer sleeve member (OSM) in nonadhesive intimate contact with and surrounding the ISM; electrostatically transferring the toner image, from the PIFM to a counter-rotating intermediate transfer member (ITM) which is a second double-sleeved roller, in a first transfer nip width produced by a pressure contact between the PIFM and the ITM, an electric field urging the toner image from the PIFM to the ITM, wherein the ITM includes a rigid cylindrical core member, a compliant ISM in nonadhesive intimate contact with and surrounding the core member, and a compliant resistive OSM in nonadhesive intimate contact wi

Abstract: A method is proposed for applying a toner print to a printable surface, in particular to a substrate (3), preferably paper or board, or to a transport surface for a substrate (3), as are a printing machine (1) and a measuring device (21) for implementing the method. Firstly, at least one print (7) is applied to the printable surface. Then, the amount of toner applied to the printable surface is measured by means of a measuring device (21). Finally, the difference between the actual amount of toner and a desired amount of toner in the print (7) applied to the printable surface is determined, the printing process being influenced on the basis of the deviation in such a way that the difference in the amounts of toner is reduced or at least remains the same during subsequent prints.

Abstract: A composition including a fluorocarbon thermoplastic random copolymer, a bisphenol residue curing agent, a particulate filler having zinc oxide, antimony-doped tin oxide particles and aminosiloxane, the cured fluorocarbon thermoplastics random copolymer having subunits of: —(CH2CF2)x—, —(CF2CF(CF3)y—, and —(CF2CF2)z—, wherein x is from 1 to 50 or 60 to 80 mole percent, y is from 10 to 90 mole percent, z is from 10 to 90 mole percent; and x+y+z equals 100 mole percent.

Abstract: The invention relates to a method and an apparatus for adjusting devices (1, 1′, . . . ) for generating color separations (2, 2′, . . . ) in a multicolor printing machine (3), changes in the dimensions (4, 4′, 5, 5′) of printing substrates (6) being taken into account by controlling the image generation.

Abstract: An electrostatographic recording apparatus and method wherein a primary image forming member (PIFM) is moved along a closed path. The PIFM is sufficiently large to form a series of images thereon in the direction of movement of the PIFM during a production run. Plural series of toner images are formed on the PIFM during production runs. The toner images are transferred from the PIFM by engaging the PIFM with a transfer device. A cycle-down of the apparatus is provided to stop movement of the PIFM so that the PIFM is stopped to park the transfer device in a predetermined location on the PIFM preferably a seam area of the PIFM.

Abstract: The present invention generally relates to a treatment for an electrographic toner. The treatment can include at least one titanium dioxide particle having a BET surface area of at least about 70 m2/g, and at least one silica particle.

Abstract: A fuser member comprising a support and a layer overlying the support, the layer including a fluorocarbon thermoplastic random copolymer, a curing agent having a bisphenol residue, a particulate filler containing zinc oxide, an aminosiloxane, and antimony-doped tin oxide particles, the cured fluorocarbon thermoplastics random copolymer having subunits of: -(CH2CF2)x-, -(CF2CF(CF3)y-, and -(CF2CF2)z-, wherein x is from 1 to 50 or 60 to 80 mole percent, y is from 10 to 90 mole percent, z is from 10 to 90 mole percent, and x+y+z equal 100 mole percent.

Abstract: Mechanism for swiveling, locking/unlocking and separating/pressing a first and second housing part, which are connected by means of a swivel axis, of which one housing part can be swiveled. Such mechanism has a common operating unit in the area of the free end of the housing opposite the swivel axis, in such a way that locking/unlocking, swiveling, and separating/pressing the first housing part is carried out together and with one hand by means of the operating unit in a single motion.

Abstract: In a photoconductive element comprising a conductive support, e.g., an electrically conductive film, drum or belt on which a negatively chargeable photoconductive layer is formed, an electrical barrier layer is formed between the support and the photoconductive layer. The barrier layer provides a high energy barrier to the injection of positive charges but transports electrons under an applied electric field. The barrier layer of the invention transports charge by electronic rather than ionic mechanisms and, therefore, is not substantially affected by humidity changes.

Abstract: A cantilever drum-mounting apparatus adapted for use in a document printer/copier having a housing having: an opening therein; a carriage movably mounted within the opening and adapted to receive, retain and rotatably support an axle of a drum; and a plurality of guide mechanisms, rotatably mounted on the carriage and engageable with opposing outer surface of the housing, for limiting movement of the carriage to a direction substantially normal to the axis for drum rotation. Preferably, movement of the carriage is controlled by the actuator of an air cylinder that cooperates with one or more reference surfaces within the housing opening to locate the drum axle at a desired position.

Abstract: An electrostatographic recording apparatus and method has a primary image forming member (PIFM) that is moving along a closed path. The PIFM is sufficiently large to form a series of images thereon in the direction of movement of the PIFM during a production run of image formation. Plural series of toner images are formed on the PIFM during production runs. A first location on the PIFM is normally used to form images forming a part of the production runs. The first location is adjacent to and downstream of, in the direction of movement of the PIFM, a second location, such as a seam area, that is not used for image recording of production images during the production runs. A transfer device that is in engagement with the PIFM has its electrical bias switched from a first polarity used when transferring toner images from the PIFM to a second polarity that is of opposite polarity when the transfer device is in engagement with the PIFM at the second location.

Abstract: The invention relates to a method and apparatus for setting register on a multicolor printing machine (1) having color printing units (6, 6′, 6″, 6″) allocated to various printing inks and having image cylinders (2, 2′), equipment (3, 3′) for producing images, in particular electrostatic latent images, on the image cylinders (2, 2′, . . . ), a carrier (4) for printing substrates (15) and image transfer points (5, 5′, 5″, 5′″) for the transfer of the color separations (7, 7′, . . . ) from the color printing units (6, 6′, 6″, 6′″) to the printing substrates (15), an allocation of the image productions (11, 11′) on the image cylinders (2, 2′, . . . ) to the printing substrates (15) being carried out in order to achieve coincidence of register of the color separations (7, 7′, . . . ) in the print.

Abstract: A black toner composition comprises dried pigmented LC toner particles comprising a thermoplastic polymer and a carbon pigment having a BET value of up to about 140, and submicron particulate addendum material disposed on the dried pigmented LC toner particles. A process for forming the toner composition comprises: forming pigmented LC toner particles comprising a thermoplastic polymer and a carbon pigment having a BET value of up to about 140, drying the pigmented LC toner particles, and blending the dried pigmented LC toner particles with submicron particulate addendum material.

Abstract: The invention relates to a method and apparatus for setting register in a multicolor printing machine (1) having a number of items of equipment (2, 2′, . . . ) for the digital production of color separations (3, 3′, . . . ), the actions of setting up and combining the color separations (3, 3′, . . . ) being controlled, in order to set the register, in such a way that in-register prints are achieved, influencing variables (4, 4′, 4″) which are caused by the printed pages and have an influence on the register being taken into account in setting up and combining the color separations (3, 3′, . . . ) before the onset of a change in said influencing variables.

Abstract: The invention relates to apparatus and a method for correcting register faults based on changes in machine state (4, 4′, . . . ; 5, 5′, . . . ) in a multicolor printing machine (1) having a number of printing units (13, 13′, . . . ) with image cylinders (14, 14′, . . . ) and equipment (2, 2′, . . . ) for the digital production of color separations (3, 3′, . . . ) on the image cylinders (14, 14′, . . . ), the actions of setting up and combining the color separations (3, 3′, . . . ) being controlled in such a way that in-register prints are achieved.

Abstract: The invention relates to a method and apparatus for the digital production of color separations (3, 3′, . . . ), the actions of setting up and combining the color separations (3, 3′, . . . ) being controlled when printing substrates (16) of a different grade are fed in, in order to correct the register setting.

Abstract: A document printer/copier comprises a pair of drum-support members for rotatably supporting an image-recording drum and, optionally, an intermediate image-transfer drum. At least one of such drum-support members is adapted to be decoupled from the drum(s) it supports and be moved to a position within the machine frame in which it does interfere with the replacement of the drum(s)'s outer layer. Preferably, such member comprises a selectively energizable clamp which, when energized, clamps onto an axle bearing of a drum and thereby supports the drum for rotation. When de-energized, the clamp releases the drum bearing, enabling the drum-support member to be slid axially along the drum axis to a position spaced from the drum axle, and thereafter pivoted to a position spaced from the drum axis where it does not interfere with drum servicing and/or replacement.

Abstract: The invention relates to a method and apparatus for correcting register faults in a multicolor printing machine (1) having a number of items of equipment (2,2′, . . . ) for the digital production of color separations (3,3′, . . . ), correction values being determined and assigned to the angular positions (4,4′, . . . ) of at least one image cylinder (5,5′, . . . ) and, as a result, being taken into account for the control of the production of the color separations (3,3′, . . . ) on said image cylinder.

Abstract: An apparatus for mounting corona wires in a corona charger comprises a wire dispenser pen with an inner wall forming a hollow shaft adapted to receive the wire; and a support structure attached to the wire dispenser pen. The support structure is adapted to receive a spool of wire.

Abstract: The invention relates to a method, apparatus and a printing machine (1) having a control device (8, 8′, 8″, 8′″) for the digital control of an element of the printing machine (1), an assignment (6, 6′) of two non-coincident digital variables (2 and 2′) being carried out.