Abstract:
To allow a lathe to turn the photoreceptor drums, charge rollers and developer brushes of printers, copiers, and facsimile machines, a unitary component adapts the object so it can be held on the lathe and drives the object. The adapting portion includes a flexible material such as a hose or o-ring to snugly receive the end extension of the drum, roller or brush. The drive portion connects with the drive bolt of the lathe and spins the object. In a second embodiment, the drive and adapter portions are separate components. A bore in the drive bushing is lined with a short piece of hose or one or more o-rings and snugly receives a protrusion from the adapter unit. A third embodiment replaces the drive bushing with tail stock forced against the adapter unit by the drive bolt of the lathe. A bore in the adapter unit lined with a flexible hose or o-ring snugly receives the end of the tail stock. A fourth embodiment of the invention provides an adapter unit which is received in the drive bushing and which may hold a different sized drum, roller or brush end extension by turning the adapter unit end for end. A fifth embodiment of the invention provides an adapter unit which has a portion received in the photoreceptor drum. A piece of flexible material is forced between the adapter unit and drum.
Abstract:
A toner hopper seal-insert and slide-seal to provide for the shipping and transporting of a re-filled toner cartridge used in printers and copying machines. The seal-insert is comprised of three slotted rectangular strips or pieces of material. A middle piece is sandwiched between two outer pieces. The slot in the middle piece is wider and open at one end, providing a channel for the slide-seal. The seal-insert is attached to the toner hopper of the toner cartridge, and the slide-seal is slid into or out of position in the seal-insert to seal or unseal the opening of the toner hopper, creating a reusable leakproof seal system. When the constriction in the end of the toner hopper is narrower than the width of the area being sealed, the slide-seal may be made narrow enough and the dimensions of the seal-insert slots may be made such that the slide-seal can be slid through the contriction and still seal the toner hopper opening to prevent the passage of toner.
Abstract:
A toner delivering apparatus and method for supplying toner to the toner hoppers of toner cartridges used in printer, copier and facsimile machines. In one embodiment a balloon is filled with toner. A string or wire is wrapped aroound the center of the balloon. The balloon is sealed in a toner hopper, with the balloon attached to the inside walls of the hopper and a free end of the string or wire tied or otherwise secured to the toner lumping-prevention paddle. When the toner cartridge is loaded in the machine and operated, the paddle rotates, pulling and tightening the string or wire around the balloon. The balloon breaks or tears, releasing toner evenly along thelength of the toner hopper. In another embodiment, a plastic, cellophane-like material is used for the toner packaging. A pull-tear strip extends along the package and is also attached to the paddle. When the paddle rotates, the pull-tear strip is removed from the package, opening the package and distributing toner within the toner hopper. For toner hoppers which do not use rotating paddles to prevent toner lumping, a small opening is provided in the hopper above the expected level of toner. The pull-tear strip extends through this opening so the toner package may be opened from outside the hopper. The user pulls the strip and does not come into contact with the toner.
Abstract:
A method for modifying a conventional laser printer toner cartridge assembly so it may be used in a fax machine in place of more expensive cartridges specifically designed for the fax machine. The method comprises removing the cylinderical fitting stubs protruding from the toner hopper portion of the cartridge assembly by grinding or melting them off. Holes are melted in the indentations of the cartridge assembly at the location where the fax machine sensor operates. Clear, flat, thin plastic windows are attached over these holes to allow the light beam from the sensor to enter the toner hopper. An additional indentation is formed on the toner hopper portion of the cartridge assembly corresponding in location to fitting and aligning protrusions on the fax machine. This indentation is melted or pressed into the cartridge assembly casing and is made less sloppy and rough in appearance by applying a filler material over portions of the indentation. Since the holes and indentation are made by a heating process, the toner within the toner hopper portion of the cartridge assembly will not be contaminated, and since the windows are thin and flat the toner distribution paddle within the cartridge assembly does not have to be notched. So the cartridge assembly does not have to be disassembled or emptied of toner prior to modification.
Abstract:
A toner hopper seal-insert and slide-seal to provide for the shipping and transporting of a refilled toner cartridge. The seal-insert is comprised of two slotted rectangular strips or pieces of material. A middle piece or layer of a resilient two-sided foam tape is sandwiched between the two slotted pieces, holding them together such that their slots align. The tape is configured such that it also has a slot which is wider than the slots in the two outer pieces and open at one end, providing a channel for the slide-seal. The seal-insert is attached to the toner hopper of the toner cartridge, and the slide-seal is slid into or out of position in the seal-insert to seal or unseal the opening of the toner hopper, creating a reusable leakproof seal system. For ease of placing the seal-insert in the toner hopper, the ends of the outer pieces opposite the slot openings in the tape layer may be bent and fused together, then cut into a shape extending to a point. The slide-seal may be a magnetized flexible strip so it attracts toner and further improves the seal. It may also be provided with a handle for ease of operation. For toner hoppers with wider openings, the width of the seal-insert is increased but the slots remain the same size. The increased width of the seal-insert is furnished with a removable tool to keep the seal-insert rigid as it is placed into position on the toner hopper.
Abstract:
A re-rulable steel rule die frame is made from metal. Slots are cut in the metal die frame for receiving the blades of the steel rule. In one embodiment, the frame is a block of metal and the slots are cut such that the slots do not go completely through the frame. The blades are placed in the slots to form the desired cutting configuration. The edges of the blades opposite the cutting edges rest on the metal bottoms of the slots. The corners or ends of the blades are joined by welding, brazing or soldering without danger of burning the metal frame. In another embodiment, computer-directed laser beams cut precise slots in multiple layers of metal. The multiple layers are then joined together so the slots align, providing a precisely cut metal-framed steel rule die of a thickness able to withstand repeated stress. A modification of this embodiment allows the cut material to fall through the die. The desired shape is precisely cut in each frame layer, forming openings through each layer. The layers are joined together so the openings align. The steel rule blades are brazed to the metal frame layers around the perimeter of the formed opening. When the material is cut it falls through the frame. As an alternative to the openings, compressed air ejection system is used to remove the cut work piece from the die frame.
Abstract:
In one embodiment of the invention, the bore in the plastic bushing of a plastic gear attached to a photoreceptor drum in a toner cartridge is enlarged. A metal bushing is inserted within the plastic bushing and allows the gear to rotate around the drum shaft without wearing as quickly. The metal bushing, by pressing against the metal spring-clip contact, ensures the electrical ground connection between the drum and stationary drum shaft. In a second embodiment, the entire gear is manufactured from metal. A conductive joining material, metal prongs, or knurls on the outer surface of the metal bushing contact or scratch into the inner wall of the drum and provide the electrical ground connection between the inner wall of the photoreceptor drum and the drum shaft. On the nonconductive gear side of the drum, the hole in the cartridge wall which receives the gear shaft is lined with a bushing to prevent wear. A gear aligner device which extends into the gear shaft may be alternatively used at this location to align the gear correctly and prevent deforming of the hole in the cartridge wall.
Abstract:
A spring-contact device which prevents the primary charge roller of a toner cartridge assembly from shifting back and forth and aids in providing the roller with an electrostatic charge. The device is made from a thin piece of electrically conductive material and comprises a long portion and a short portion bent from the long portion at an approximately right angle. The short portion has a hole in it for fitting over the hub on the charge roller mount in the toner cartridge assembly. The long portion presses against an endpost of the roller, maintaining a spring-contact. A spring-contact device is placed at each end of the charge roller such that the roller is held between the long portions of the spring-contact device by opposing forces. On the side of the cartridge assembly through which the charge is provided, the short portion of the spring-contact device is pressed against the conductive plate on the charge roller mount, thereby providing a charge to the roller from the conductive plate to the endpost of the roller. On the side of the cartridge assembly opposite the side through which the charge is provided, the spring-contact device is coated with an insulated material.
Abstract:
A padding powder suspension or slurry and method for applying a padding powder for lubricating components of printing, copy and facsimile machines such as the photoreceptor drum, photoreceptor belt, wiper and doctor blade. The padding powder is comprised of a mica-group mineral or a mixture of a mica-group mineral and calcium stearate. The method comprises mixing the padding powder with a solvent, for example alcohol, to form a different substance. The mica-group mineral is inert so it does not dissolve in the alcohol. A suspension agent or surfactant may also be mixed with the padding powder and alcohol to keep the padding powder suspended in the alcohol for a longer period of time. The resulting suspension or slurry is then applied on the components. The suspension or slurry may easily be applied with brushes, spray devices, sponge materials or a soft cloth. After the suspension or slurry is evenly applied on the components, the solvent and suspension agent evaporates and the padding powder dries to a thin residue. The result is an evenly distributed lubricant in the correct amount for optimum performance of the component, with no mess or waste of padding powder.
Abstract:
A sleeve for the shaft section of a plastic drum axle used in toner cartridges for printing, copy and facsimile machines to rotatively support the photoreceptor drum. The sleeve is made of strong plastic or metal and is sized to snugly fit around the shaft section. Glue may be used to further secure the sleeve to the shaft section. The sleeve is slid onto the drum axle shaft section and abuts against the drum axle attach section. The sleeve has a length and an outside diameter which allow the sleeve to snugly fit in the gear piece of the photoreceptor drum, eliminating the clearance between the shaft section and gear piece passage. In this way the gear piece and photoreceptor drum are rotatively supported on the drum axle along nearly the entire length of the shaft section, preventing the photoreceptor drum from wobbling during operation and rotation.