A flange contains a flange interior surface disposed in the 1st open end, a flange exterior surface disposed outdoors of the first open finish, a flange side surface connecting the flange interior and exterior surfaces, and at least 1 flange obtaining portion. At least 1 connector is disposed in the at least 1 drum getting portion and the at least 1 flange acquiring portion to connect and/or to secure the optical photograph-conductive drum and the flange.
Coupling arrangement obtaining an optical photo-conductive drum such as drum exterior and interior surfaces surrounding and extending along a longitudinal axis, the drum exterior surface dealing with away from the longitudinal axis, and the drum interior surface dealing with towards the longitudinal axis and like first and second open ends and at least 1 drum receiving portion.
In a acknowledged electro-photographic (EP) machine, such as a photocopier, a laser printer, and a facsimile, a known procedure cartridge is removably mounted to a acknowledged major assembly.
The major assembly of the EP machine usually consists of, amid other elements, a housing, a handle panel disposed within the housing for controlling an picture forming method, an electronic management technique that is operated by the management panel, a motor that is managed by the management technique, a gear train that is driven by the motor, and electrical contacts for delivering electrical power to the process cartridge that is inserted into and retained within grooves or channels formed in opposing side walls of the housing. The major assembly typically also includes an optical projection method and a central processor that controls a sequence and a timing of the optical projection system in the course of a acknowledged image forming operation.
The procedure cartridge generally involves, amongst other components, an optical photograph-conductive (OPC) drum, and a driving gear for driving 1 or much more components of the procedure cartridge, such as a charging device, a establishing gadget, and a cleaning gadget.
For the duration of the acknowledged picture forming operation, the OPC drum undergoes a charging portion and a discharging portion of a charging/discharging cycle to in the end produce a developer picture (e.g., a toner picture) on a recording material (e.g., a sheet of paper, a transparent sheet, etc.). Briefly, during the charging portion of the charging/discharging cycle, the charging device uniformly fees an exterior surface of the OPC drum. The optical projection technique tasks image containing information in the form of a laser light to selectively discharge a portion of the exterior surface of the OPC drum, therefore forming a latent image on the OPC drum. The building gadget applies a developer (e.g., a toner) to the partially charged exterior surface of the OPC drum. The developer is electro-statically attracted to the charged regions of the OPC drum, therefore forming the developer picture. The developer image is then transferred from the exterior surface of the OPC drum to the recording material.
In the acknowledged approach cartridge, the exterior surface of the OPC drum is coated with an electrically resistive coating to improve a high quality of the image developed for the duration of the picture forming approach. Examples of acknowledged electrically resistive coatings incorporate challenging anodization with aluminum oxide (Al2 O3) and oxidized surfaces. Normally, throughout a coating procedure, the OPC drum is submerged in the electrically resistive coating, such that an interior surface of the OPC drum, as nicely as the exterior surface, is coated with the electrically resistive coating.
It is known that the coated interior surface of the OPC drum need to be sufficiently grounded for the OPC drum to undergo the essential discharging portion of the charging/discharging cycle. In a identified grounding or earthing arrangement, a grounding plate is disposed beneath the driving gear and within an interior portion of the OPC drum. The grounding plate consists of a plurality of first radially extending projections that contact the interior surface of the OPC drum. To satisfactorily ground the OPC drum with the coated interior surface, the electrically resistive coating have to be eliminated from a get in touch with spot of the interior surface through a separate and added process (i.e., a approach after the coating of the OPC drum), this kind of that the very first projections can be aligned to achieve electrical connection with the interior surface of the OPC drum. An illustration of a known method for getting rid of the electrically resistive coating involves a laser scribing operation. The grounding plate also involves a plurality of second radially extending projections that speak to an electrically conductive shaft extending by means of the driving gear.
Hence, throughout assembly of the recognized process cartridge, the grounding plate is aligned with the speak to areas and inserted into the OPC drum, such that the initial projections of the grounding plate accomplish electrical connection with the contact regions of the OPC drum. The driving gear is then secured to the OPC drum by identified securing implies, thereby preventing relative movement and rotation, and stopping disassembly, amongst the OPC drum, the driving gear, and the grounding plate. Examples of securing means incorporate an adhesive and a press fit arrangement. The electrically conductive shaft extends by means of the driving gear, and achieves electrical connection with the second projections of the grounding plate. By these arrangements, the OPC drum is sufficiently grounded via the grounding plate and the electrically conductive shaft.
The existing invention still additional gives a approach of grounding a coupling arrangement which includes an optical photograph-conductive drum and a flange such as an interior surface disposed within the optical photograph-conductive drum, an exterior surface disposed opposite the interior surface, and a side surface connecting the interior and exterior surfaces. The method includes disposing a connector in the side surface of the flange, and inserting the flange that consists of the connector within the optical-photoconductive drum to attain electrical connection in between the within of the optical photo-conductive drum and the connector, and securing the flange to the optical photo-conductive drum.
No comments:
Post a Comment