Developing unit with reflection mirror and printing apparatus employing the same
AssigneeSamsung Electronics Co., Ltd.
InventorTai-eun Kwon
Life of this patent
Estimating the term…
Abstract
A developing unit and a printing apparatus employing the same. A reflection mirror is installed in the developing unit at an angle to reflect an incident light beam toward an organic photoconductor (OPC) drum also installed in the developing unit. A latent image is formed on the surface of the OPC drum by the light beam.
Claims39
A developing unit, comprising:
- an OPC (organic photoconductor) drum on a surface of which a latent image is formed when exposed to a light beam;
- and
- a reflection mirror installed at an angle in the developing unit to reflect the light beam entering the developing unit toward the OPC drum.
A printing apparatus comprising:
- a medium feeder to feed a print medium;
- a developing unit to form an image to be transferred to the print medium comprising:
- an OPC drum on a surface of which a latent image is formed when exposed to a light beam, and
- a reflection mirror installed at an angle to reflect the light beam entering the developing unit toward the OPC drum;
- a light scanning unit to radiate the light beam onto the developing unit and comprising:
- a light source to generate the light beam,
- a polygon mirror to deflect the light beam in a main scanning direction of the print medium, and
- an F-θ lens to uniformly focus the deflected light beam onto the OPC drum;
- a transfer unit to transfer the image formed by the developing unit to the print medium;
- a fusing unit to fix the image transferred to the print medium using heat;
- and
- a medium discharging unit to discharge the print medium to which the image has been fixed.
A printing apparatus comprising:
- a light scanning unit to radiate a light beam;
- a developing unit to receive the light beam to form an image to be transferred to a print medium;
- and
- a fusing unit to fix the image transferred to the print medium using heat and located on another other side of the developing unit from the light scanning unit so that the light scanning unit is substantially unaffected by the heat from the fusing unit.
A method of adjusting an image position on a print medium in a printing apparatus having a light scanning unit emitting a light beam toward a reflection mirror in a developing unit to reflect the light beam toward an OPC drum in the developing unit, comprising:
- rotating an angle of a reflection mirror in the developing unit to cause a reflected light beam to strike an OPC drum in the developing unit at an advanced position;
- and
- rotating the angle of the reflection mirror in the opposite direction to cause the reflected light beam to strike the OPC drum at a rearward or retarded position.
A method of printing an image on a print medium using a reflection mirror in a developing unit to reflect a light beam toward an OPC drum in the developing unit, comprising:
- emitting a light beam from a light scanning unit;
- admitting the light beam into a developing unit through a window facing a reflection mirror in the developing unit;
- reflecting the light beam off the reflection mirror toward a surface of an OPC drum;
- scanning the surface of the OPC drum according to an image to be printed;
- applying toner to the OPC drum to develop the image;
- and
- transferring the toner image to the print medium.
Dependencies are inferred from the claim text.