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HP RG In-line color laser, direct-to-page printing.


Tracking drum life is essential because of drum wear and the potential for overflow from the hp 4600dtn toner hopper if the photosensitive drum life is extended past its useful life. Figure illustrates the toner level detection system. At certain times, such as during ETB cleaning or during monochrome printing, toner should not pass onto the drum, and the developing cylinder should not be hp 4600dtn contact with the drum. The bottom half of the print cartridge can pivot up and down, causing the developing cylinder to either come in contact with or move away from the photosensitive drum.

HP Color LaserJet dtn Printer Software and Driver Downloads HP® Customer Support

A small block inside the printer causes each cartridge to pivot. When the block is pushed up, the rear of the cartridge is pushed up, and the front of the cartridge swings down. The developing cylinder disengages from the drum. Figure illustrates this process. Cartridge Axis Photosensitive drum Developing disengaging block Developing cylinder engaged Figure Developing cylinder disengaging Developing cylinder disengaged The developing cylinders are disengaged only during hp 4600dtn printing or during ETB cleaning. During monochrome printing, the developing cylinder in all cartridges except black is disengaged. During ETB cleaning, the developing cylinders in all cartridges are disengaged.

Figure illustrates the ETB unit. All other rollers are driven by the belt rotation. This hp 4600dtn consists of three steps: q primary exposure q primary charging q laser beam exposure After the last step is completed, areas of the drum surface that have not been exposed to the laser beam retain a negative charge.

The areas exposed to the hp 4600dtn are neutralized. This neutralized image is called an electrostatic latent image because it is invisible to the eye.

Toner Cartridges for HP Color LaserJet 4600 Printer

Step 1 : Primary exposure To prepare for primary charging, hp 4600dtn from the primary exposure LED strikes the photosensitive drum surface. This eliminates any residual charge on the drum surface in order to avoid inconsistent charge density.


Figure illustrates this step. Primary charging roller Photosensitive drum Figure Primary hp 4600dtn Step 2: Primary charging To prepare for latent image formation, a uniform negative potential is applied to the photosensitive drum surface.

CS Compatible Replacement for HP 4600dtn Toner Cartridges 4 Color Set

The primary charging roller is made of a conductive rubber. DC bias is applied to the primary charging roller to maintain uniform potential on the drum surface. Primary charging roller J. Hp 4600dtn bias rrr rrr Figure Primary charging C Chapter 5 Theory of operation Step 3: Laser beam exposure As the laser beam scans the drum surface, it neutralizes the negative charge. This is the electrostatic latent image. The remaining areas, where the laser beam has not struck, retain a negative charge. Laser bean ft? Unexposed area Figure Laser beam exposure Image formation system C Development block The second part of the image formation hp 4600dtn is the development block, in which toner is transferred onto the electrostatic latent image on the surface of the photosensitive drum, creating a visible image.

This printer uses a contact development method that keeps the developing cylinder in contact with the drum, pushing the toner against the drum surface for development. The toner is non-magnetic and consists of resins. This block consists of two steps: q toner charging q development Figure shows a cross-section of a print cartridge and illustrates the development block. A negative voltage is applied to the toner charging roller and creates a uniform negative potential on the toner.

HP Printer: Individual cartridge page yield details HP Color LaserJet

Step 5: Development The areas on the photosensitive drum that have been exposed to the laser beam have a higher potential are less negatively charged than the toner particles on the developing cylinder. As the photosensitive drum rotates, the toner adheres to the exposed areas on the photosensitive drum. At this point, the image is visible on the drum surface. C Chapter 5 Theory of operation Transfer block The third part of the image formation process is the transfer block, in which the toner image is transferred from the photosensitive drum to the paper. This block consists of three steps: q hp 4600dtn q transfer q separation Step hp 4600dtn Attaching After the paper is picked up from the input tray, the attaching roller pushes it against the ETB.

The attaching roller has a positive DC bias, and it creates a positive charge on the paper. As the ETB passes the transfer charging roller, it picks up a positive charge. The negatively charged toner on the photosensitive drum is transferred to the positively charged paper.

In four-color printing, as four colors of toner are piled up on the paper, the holding force hp 4600dtn the toner weakens as the transfer process progresses. To counteract this effect, the DC controller increases the positive DC bias applied to the transfer charging roller for each successive color. ETB belt Print paper Figure Separation C Chapter 5 Theory of operation Fusing block The fourth part of the image formation process is the fusing block, in which the toner image is fused to the paper, making a permanent image that cannot be smeared.

This block consists of one step: fusing.

Step 9: Fusing This printer uses the induction heating method to fuse the toner to the paper.HP Color LaserJet dtn - printer - color - laser overview and full product specs on CNET. The HP Hp 4600dtn LaserJet series gives hp 4600dtn high-speed color laser printing - at an affordable price. Improved over its successful predecessor, thethe.

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