HP laserjet 1018 Manuale Di Servizio
6.
Fusing stage—During this process, the heat and pressure fuse the toner into the media to
produce a permanent image. The media passes between a heated fusing element and a soft
pressure roller, which melt the toner and press it into the media.
produce a permanent image. The media passes between a heated fusing element and a soft
pressure roller, which melt the toner and press it into the media.
7.
Drum-cleaning stage—During this process, the cleaning blade is in contact with the surface of
the drum at all times. As the drum rotates during printing, the cleaning blade wipes excess toner
off the drum and stores it in the waste toner receptacle.
the drum at all times. As the drum rotates during printing, the cleaning blade wipes excess toner
off the drum and stores it in the waste toner receptacle.
Print cartridge
As the focal point of the image-formation system, the print cartridge contains toner and houses the
cleaning, conditioning, and developing stages of the process. The print cartridge contains the
photosensitive drum, primary-charging roller, developing station, toner cavity, and cleaning station.
By including these components (which wear, degrade, or are consumed) in the replaceable print
cartridge, the need for many service calls is eliminated. The special photosensitive properties of the
drum form an image on the drum surface and then transfer the image to media.
cleaning, conditioning, and developing stages of the process. The print cartridge contains the
photosensitive drum, primary-charging roller, developing station, toner cavity, and cleaning station.
By including these components (which wear, degrade, or are consumed) in the replaceable print
cartridge, the need for many service calls is eliminated. The special photosensitive properties of the
drum form an image on the drum surface and then transfer the image to media.
CAUTION
The print cartridge does not include a light-blocking shutter. Do not expose the
drum to light, which can permanently damage the drum. Protect the print cartridge whenever
you remove it by covering it with paper.
you remove it by covering it with paper.
Printer paper-feed system
The main input tray and the priority feed slot merge into one main input area. The printer senses the
media as it enters the paper-feed path and passes the top-of-page sensor (PS801). It does not
sense the presence of media before the beginning of the print cycle. The following steps occur when
the printer receives a print job.
media as it enters the paper-feed path and passes the top-of-page sensor (PS801). It does not
sense the presence of media before the beginning of the print cycle. The following steps occur when
the printer receives a print job.
Step 1
The ECU activates the motor (M1). Paper motion begins when the ECU energizes the pickup
solenoid (SL1).
solenoid (SL1).
Step 2
The paper pickup roller rotates once. The paper-lift plate pushes the media against the pickup
roller.
roller.
Step 3
Using friction, the pickup roller grabs the top sheet and advances it to the feed-assembly drive-
rollers. To ensure that only one sheet is fed, a main separation pad holds the remainder of the
stack in place.
rollers. To ensure that only one sheet is fed, a main separation pad holds the remainder of the
stack in place.
Step 4
The feed-assembly drive-rollers advance the media to the top-of-page sensor (PS801). This
sensor informs the ECU of the exact location of the leading edge of media, so that the image
being written on the photosensitive drum can be precisely positioned on the page.
sensor informs the ECU of the exact location of the leading edge of media, so that the image
being written on the photosensitive drum can be precisely positioned on the page.
Step 5
The feed-assembly drive-rollers then advance the media to the transfer area where the toner
image on the photosensitive drum is transferred to the media.
image on the photosensitive drum is transferred to the media.
Step 6
After the image is transferred, the media enters the fuser assembly where heat from the fuser
and pressure from the pressure roller permanently bond the toner image to media. The paper-
delivery sensor (PS803) determines that the media has successfully moved out of the fusing area.
and pressure from the pressure roller permanently bond the toner image to media. The paper-
delivery sensor (PS803) determines that the media has successfully moved out of the fusing area.
Step 7
The fuser-assembly exit-rollers deliver media to the output bin face-down.
ENWW
Printer functions
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