摘要:
A development system (10) for an electrophotographic printer (100) with multiple augers containing a development roller (11), a first channel (12) containing a feed auger (13), and a second channel (19) containing a mixing auger (20) with the second channel having regions optimized for either developer mixing or developer transport. Optimizing the regions of the second channel for mixing and transport ensures that a homogeneous developer is steadily provided to the first channel and the development roller, thus enabling the production of uniform, high-quality images.
摘要:
A development system (10) for an electrophotographic printer with multiple augers containing a development roller (11) and a first channel contains a feed auger (13) and developer, with a plurality of paddles (12) attached to the feed auger, at least some the paddles increase in size with respect to a previous paddle along a direction of developer flow (18). This arrangement of paddles ensures that a uniform layer of developer is formed on the development roller despite the volume of developer in the first channel decreasing along the length of the first channel in the direction of developer flow.
摘要:
A development system (10) for an electrophotographic printer with multiple augers containing a development roller (11) and a first channel contains a feed auger (13) and developer, with a plurality of paddles (12) attached to the feed auger, at least some the paddles increase in size with respect to a previous paddle along a direction of developer flow (18). This arrangement of paddles ensures that a uniform layer of developer is formed on the development roller despite the volume of developer in the first channel decreasing along the length of the first channel in the direction of developer flow.
摘要:
A method for transporting developer in an electrophotographic printer (100) with multiple augers includes transporting developer from a first channel to a development roller (11) across at least a portion of the development roller; releasing spent developer from the development roller to a second channel (19); wherein the second channel has a first region having a first cross-sectional area and a second region having a second cross-sectional area; wherein the first region is a mixing region the second region is a transport region; and wherein the first cross-sectional area is larger than the second cross sectional area.
摘要:
A development system (10) for an electrophotographic printer (100) with multiple augers containing a development roller (11), a first channel (12) containing a feed auger (13), and a second channel (19) containing a mixing auger (20) with the second channel having regions optimized for either developer mixing or developer transport. Optimizing the regions of the second channel for mixing and transport ensures that a homogeneous developer is steadily provided to the first channel and the development roller, thus enabling the production of uniform, high-quality images.
摘要:
A method for transporting developer in an electrophotographic printer with multiple augers includes transporting developer from a first channel to a development roller across at least a portion of the development roller; releasing spent developer from the development roller to a second channel; wherein the second channel has a first region having a first cross-sectional area and a second region having a second cross-sectional area; wherein the first region is a mixing region the second region is a transport region; and wherein the first cross-sectional area is larger than the second cross sectional area.
摘要:
A development system (10) for an electrophotographic printer with multiple augers containing a development roller (11) and a first channel contains a feed auger (13) and developer, with a plurality of paddles (12) attached to the feed auger, at least some the paddles increase in size with respect to a previous paddle along a direction of developer flow (18). This arrangement of paddles ensures that a uniform layer of developer is formed on the development roller despite the volume of developer in the first channel decreasing along the length of the first channel in the direction of developer flow.
摘要:
A development system (10) for an electrophotographic printer with multiple augers containing a development roller (11) and a first channel contains a feed auger (13) and developer, with a plurality of paddles (12) attached to the feed auger, at least some the paddles increase in size with respect to a previous paddle along a direction of developer flow (18). This arrangement of paddles ensures that a uniform layer of developer is formed on the development roller despite the volume of developer in the first channel decreasing along the length of the first channel in the direction of developer flow.
摘要:
A developer station and method for an electrophotographic printer is provided that reduces developer agitation. The developer station includes a sump of magnetic developer, and a magnetic brush roller mounted above said sump and having a rotatable magnetic core surrounded by a substantially cylindrical toning shell rotatably mounted with respect to the core. The toning shell defines a nip at its closest point to the photoconductor element. A tangent line tangent to the cylindrical toning shell at the nip is oriented substantially vertically, and the magnetic developer is applied to the toning shell at an angular distance of no more than about 120° from said nip. The toning shell may be eccentrically mounted with respect to the magnetic core and is substantially closest to the rotatable magnetic core within about +30° and −30° from said nip. Such a configuration advantageously reduces the residence time of the developer on the toning shell.
摘要:
An apparatus and method for dispensing toner in an electrostatographic printer includes apparatus for drawing ambient air in a vertical direction, preferably upwards, through a relatively large toner container. The air-flow is sufficient to fluidize the toner in the toner container and thereby prevent compaction. Such fluidization is optionally supplemented by the action of an auger or propeller mechanism mounted within the toner container. During rotation of the auger/propeller, the toner is lifted and thereby further prevents toner compaction.