Abstract: A printing control method of a printer is implemented in a printing system including an information providing device and a printer. The printer is connected to the information providing device for printing data sent by the information providing device. Once a printing driver program of the information providing device receives page data to be outputted, the printing driver program converts a number of first color components of the page data into a number of second color components and checks if any one of the second color components contains zeroes for all the content. If one second color component is found to have zeroes for all the content, this very second color component will not be sent to the printer, whereas the rest of the second color components will be sent to the printer for output.

Abstract: A printing control method of a printer is implemented in a printing system including an information providing device and a printer. The printer is connected to the information providing device for printing data sent by the information providing device. Once a printing driver program of the information providing device receives page data to be outputted, the printing driver program converts a number of first color components of the page data into a number of second color components and checks if any one of the second color components contains zeroes for all the content. If one second color component is found to have zeroes for all the content, this very second color component will not be sent to the printer, whereas the rest of the second color components will be sent to the printer for output.

Abstract: A light emitting control device for a light emitting diode print head includes a control unit, a pulse-mask unit, a strobe unit and a data output unit. The pulse-mask unit outputs n clock signals in sequence to a light emitting diode print head. The strobe unit outputs a strobe signal to the light emitting diode print head, so as to switch on the light emitting diode print head. The data output unit outputs a print data signal to the light emitting diode print head. When the pulse-mask unit outputs a k-th clock signal of the n clock signals, the pulse-mask unit delays the k-th clock signal for a predetermined time, and the data output unit pauses outputting the print data signal. After the predetermined time, the pulse-mask unit and the data output unit continue to output the rest of the clock signals and the print data signal.

Abstract: A method for improving printing quality is disclosed. The method includes an application device transmitting an original image including a plurality of printing pixels to a driving device, the driving device setting the plurality of printing pixels as a plurality of first printing dots, the driving device detecting an edge of the original image, the driving device setting a plurality of second printing dots according to a plurality of neighboring pixels corresponding to the edge, and the driving device generating an image to be printed according to the plurality of first printing dots and the plurality of second printing dots.

Abstract: The present invention provides a method and apparatus for forming an image. A controller manages a charger and a developing bias voltage to increase an absolute value of the charging voltage to an image-bearing member and an absolute value of a developing bias voltage to a developer-bearing member to predetermined values in a plurality of steps. The controller controls the developing bias voltage applied to the developer-bearing member; wherein the following relation holds in each of the plurality of steps: |VD|>|Vi|, where VD represents a developing bias voltage applied to the developer-bearing member and Vi represents a charged potential of the image-bearing member. This invention is especially useful for mono-component development using DC voltage as a development driving mechanism.

Abstract: A developing method in an image-forming device is provided. The developing method includes the steps of charging a photoreceptor; exposing the photoreceptor to form a first latent image on the photoreceptor; developing the first latent image by a first developing unit having a first potential to form a first toner image; and discharging the photoreceptor having the first toner image, such that when the photoreceptor is charged again, the first toner image on the photoreceptor has a second potential, and the second potential is approximately the same as the first potential of the first developing unit.

Abstract: A positioning mechanism for positioning a developing apparatus is disclosed. The positioning mechanism includes a base. A guide slot is formed on the base for guiding the developing apparatus to slide inside the base in a first direction. The base includes a first end and a second end. The lock mechanism further includes a positioning roller disposed on a first side of the guide slot for pressing the developing apparatus when the developing apparatus is inserted inside the base completely so that a first end of the developing apparatus contacts against the first end of the base and a second end of the developing apparatus contacts against the second end of the base.

Abstract: A belt tension mechanism includes a tension roller disposed on a side of a photoconductive belt for pressing the photoconductive belt, a first elastic component connected to the tension roller for providing the elastic force to the tension roller, and a releasing device disposed on the other side of the photoconductive belt. The releasing device includes a actuating component for moving in a first direction and separating from the tension roller when being electrified so that the first elastic component can drive the tension roller to a position where the tension roller can press the photoconductive belt, and a second elastic component connected to the actuating component for driving the actuating component to a second direction opposite to the first direction when the actuating component is not electrified so that the actuating component can drive the tension roller to a position where the tension roller cannot press the photoconductive belt.

Abstract: A method for operating a printer to print with the operation having a pre-determined period of time between the start of a printing process and the completion of a fuser module heating process is provided. The method includes performing the heating process by heating the fuser module towards a target temperature. Next, compare the rest of the expected period of time for the fuser to arrive at the target temperature with the pre-determined period of time. If the expected period of time is no more than the predetermined period of time, start the printing processes. Lastly fuse the printing medium after the completion of the printing processes. The present invention also includes a method for operating a printer to print with the operation having an adjustable period of time between the start of the printing processes and the completion of a fuser module heating process.

Abstract: A developing method improves the printed image quality of an image-forming device by removing surplus charge potential to make the surface potential of a photoreceptor charged during first and second charging steps be the same for next developing, or by inputting different voltages to the developing units. An image-forming device is also disclosed.

Abstract: A gap controlling structure for image forming apparatus for maintaining a development gap between a photoconductor of an image-receiving module and a developer roller of a developer unit includes a image-receiving module frame, and at least a photoconductor support bar. The photoconductor support bars are combined on the image-receiving module unit frame. Each of the photoconductor support bars has a raised curved surface. The developer unit has at least a toner cartridge disposed corresponding to the curved surfaces. The distance between the toner cartridges is maintained by the photoconductor support bars supporting the photoconductor. The developer unit further includes a roller gap controlling apparatus to improve a gap accuracy of positioning the developer roller.

Abstract: An apparatus and method for shifting the image-forming region of a printing device is disclosed. The apparatus includes a photoconductor, an encoder, several rollers, and a controlled device. The present invention is used to shift the image-forming region in the photoconductor by the controlled device. The damage of the image-forming region in the photoconductor can be reduced. The lifetime of the photoconductor can be extended. In addition, the controlled device uses firmware to shift the image-forming region. The shifting method can be a sequential mode or random mode.

Abstract: A liquid electrophotographic developing apparatus including a developing unit with an elongated opening disposed adjacent to a photoreceptor and an air duct provided around the elongated opening. The air flow in the air duct has a predetermined air pressure to hold a liquid developer within a space substantially between the developing unit and the image-bearing surface while permitting toner particles in the liquid developer deposited on the image-bearing surface to be retained by the image—bearing surface and volatile solvent to be vaporized.

Abstract: An imaging system includes an imaging subsystem for forming an image on a sheet, a tray for holding a supply of sheets, a ramp for directing a sheet from the tray into a paper path, a sensor in the vicinity of the paper path, a drive assembly and a processor connected to the drive assembly and the sensor. The drive assembly includes a movable roller configured to move the sheet into the paper path by moving a top sheet of a supply of sheets in the tray to the ramp. The sensor is configured to detect a sheet traveling in the paper path from the tray and to provide an output signal in response to the detection. The processor is configured to control movement of the roller, to receive and store an initial sheet level value, to receive the output signal from the sensor and to calculate a time, t, from activating the drive assembly to receiving the sensor output signal and to accordingly adjust the initial sheet level value.

Abstract: An imaging system that includes a photoreceptor belt capable of having an electrostatic latent image recorded thereon, a group of developing stations capable of developing a color image on the photoreceptor, and at least one charging means and at least one exposing means to prepare the photoreceptor for desired conditions, such as creating a cleaning patch to remove toner from a toner support member associated with one of the plurality of developing stations.

Abstract: The present invention is directed to a non-contact, single-component developing system for electrophotographic machines that effectively reduces the impact of adhesion forces on the development process. The developing system of the present invention utilizes a single-component toner that tends to reduce the adhesion forces that hold the toner particles on a toner support member. Preferably, the toner is combined with large and small silica particles having a concentration by weight that results in an optimum surface coverage of toner particles by large and small silica particles that facilitates a reduction in the adhesion forces holding the toner particles on the toner support member.

Abstract: A liquid electrophotographic developing apparatus including a developing unit and a plurality of air transport members. The developing unit has an elongated opening disposed adjacent to a moving image-bearing surface of a photoreceptor, and it is used for converting an electrostatic latent image into a toner image. Electrodes formed within the elongated opening provide an electric field to charge toner particles in a liquid developer. The air transport members are provided around the elongated opening of the developing unit, and airflow therein has a predetermined air pressure to transport unused developer away from the image-bearing surface while permitting toner particles in the liquid developer deposited on the image-bearing surface to be retained by the image-bearing surface.