摘要:
A printing plate for computer-to plate lithography having a laser-ablatable member supported by a substrate. At least one portion of the laser-ablatable member is formed form an acrylic polymer containing laser-sensitive particles. The laser-sensitive particles absorb imaging radiation and cause the portion of the laser-ablatable member containing the laser sensitive particles and any overlying layers to be ablated.
摘要:
A printing plate for computer-to plate lithography having a laser-ablatable member supported by a substrate. At least one portion of the laser-ablatable member is formed form an acrylic polymer containing laser-sensitive particles. The laser-sensitive particles absorb imaging radiation and cause the portion of the laser-ablatable member containing the laser sensitive particles and any overlying layers to be ablated. Alternatively, the printing plate may include a printing member with an initial affinity for a printing fluid that changes to another affinity to printing fluid upon treatment with radiation.
摘要:
A process for making lithographic sheet material suitable for imaging by laser radiation. A metal substrate is electrocoated in a bath containing a polymeric resin and laser-sensitive particles, thereby depositing a laser ablatable layer on a principal surface of the metal substrate. In one embodiment, the laser-ablatable layer is treated with a corona discharge for a time sufficient to render the layer non-ink wettable. In other preferred embodiments, the laser-ablatable layer is overcoated with an overlayer such as a non-ink wettable silicone layer or a water-wettable layer comprising an organophosphorus polymer, preferably a copolymer of acrylic acid and vinylphosphonic.
摘要:
An elongated metal frame structure for connecting a large elongated container to a vehicle employed in transporting the container. The frame comprises a plurality of aluminum alloy tubes connected together at certain corners of the frame by corner assemblies. The assemblies comprise a "standard" cast iron or steel fitting and at least one steel member connected to one face of the fitting. The exterior surfaces of each steel member are coated with materials that are effective in electrically separating the steel member from an aluminum tube of the frame when the corner assemblies and aluminum tubes are assembled together. The size of the steel members in cross section with the materials applied to the surfaces of the steel member is such that the steel member can slip into the end of the aluminum tube located at a corner of the frame.
摘要:
A spring biasing locking mechanism is provided for a step and repeat motor. The motor includes a base having a channel, an output member in the channel, at least one translator drive element and first and second clamping elements. The spring biasing locking mechanism includes a locking structure joined to the base by a hinge. The locking structure spans both clamping elements. A spring biases the locking structure toward the channel so that the spring force is transmitted to the two clamping elements. The spring biased locking mechanism accommodates wear of the device, accommodates thermal expansion of the motor components, provides a limit on clamping force and provides a zero power hold condition.
摘要:
Communications provided via e-mail, instant messaging, chat, and web-based telephony applications, are monitored and restricted at a computer host. In one approach, messages from unknown or unsafe senders are intercepted and stored in a location inaccessible to all but an authorized person, until they can be reviewed by the authorized person, such as a parent. Via a user interface, the authorized user can review the messages at a later time to determine if the intended recipient, such as a child, should be able to access them. Once access is authorized, the stored messages are retrieved and provided to the recipient. In another aspect, a shared allow/block contact list identifies a user having different user names from one or more service providers. The contact list can integrate users from different services and communication modes. In another aspect, notification of monitoring is provided in the monitored messages or in newly generated messages.