Abstract: A solenoid-operated valve and valve assembly. The valve may be made from a fluid tube that has a magnetizable plunger or armature movably positioned in the body. A coil of wire is directly wound to the fluid tube, thereby reducing the air gap between magnetic flux path and plunger to increase the magnetic force imparted to the plunger. Winding the coil to the valve body removes the need for a separate sleeve or bobbin, and additionally allows for tighter spacing and reduced air gap, thereby increasing magnetic flux by allowing more coil turns and closer coil spacing to the plunger. In one form, the valve is packaged into a narrow (for example, 15 millimeters wide) configuration for close valve-to-valve stackable centers, thereby allowing multiple valves to be placed side-by-side for adhesive or related fluid dispensing applications.

Abstract: A liquid dispenser. The dispenser includes a plurality of cartridges at least one of which allows selective deposition of the liquid onto a workpiece passing through a travel path between the cartridges. Spacing between the cartridges is moveable such that they are responsive to the presence or absence of or changes in thickness or planarity of the workpiece. A linear bearing cooperates with at least one of the cartridges to limit relative movement between them along a linear path. In one embodiment, the dispenser includes an applicator head configured to deposit the liquid includes a divergently-shaped flowpath.

Abstract: A digital color printing system having an input device such as a joystick is disclosed that provides real-time print quality control during a print run. The joystick is located near an output tray to enable an operator to perceive adjustments to print quality in real-time. The joystick modifies nominal electrostatic control points stored in non-volatile memory (NVM) of the printing system. Long term process controls are unchanged by joystick input, while short-term xerographic process controls are overridden by joystick commands. In one embodiment, joystick controls are used to adjust electrostatic controls which include adjusting developer bias and transfer current. In another embodiment, joystick controls also adjust, image processing parameters such as TRC curves. The new image processing parameters require that a contone image originally processed must be reprocessed to form a new raster image.

Abstract: A document feeding method and apparatus for frictionally (non-sprocket) feeding computer forms web having sprocket holes to the imaging station of a copier for copying, compatible with individual document sheet feeding. After automatically determining that a computer forms web rather than an individual document sheet is being frictionally fed to the imaging station the computer forms web is automatically frictionally fed incrementally in selected incremental lengths and registered to the imaging station with a controllable frictional servo-drive system without engaging the sprocket holes. A system is provided for sensing and accumulating first signals corresponding to the movement of the controllable frictional drive system, and for sensing and accumulating second signals corresponding to the number and position of sprocket holes in the computer forms web being so frictionally fed, including a system of validating sensed holes as being sprocket holes by validating hole dimensions and positions.