glossy film, or overhead transparency) and switches to the correct print mode. The DC controller determines a media mismatch error and notifies the formatter under the following condition:

Simplex printing

●The specified print mode is overhead transparency (OHT), but the media sensor detects another paper type.

●The specified print mode is not auto or OHT, but the media sensor detects OHT.

Duplex printing

●The media sensor detects OHT.

The DC controller flashes the media sensor during the initial rotation period under the following conditions:

●The product is turned on

●The product exits Sleep mode

When the light intensity is not a specified value, the DC controller determines a media-sensor failure and notifies the formatter.

Feed speed control

For the best print quality, the product adjusts the feed speed depending on the paper type.

Table 1-14Print mode and feed speed

Print mode

Feed speed

Media sensor detection

 

 

 

Normal

1/1

Yes

 

 

 

Heavy media 1

3/4

 

 

 

 

Heavy media 2

1/2

Yes

 

 

 

Heavy media 3

1/3

Yes

 

 

 

Light media 1

1/1

Yes

 

 

 

Glossy media 1

1/3

Yes

 

 

 

Glossy media 2

1/3

Yes

 

 

 

Glossy media 3

1/4

Yes

 

 

 

Glossy film

1/4

Yes

 

 

 

Envelope

1/2

No

 

 

 

OHT

1/4

Yes

 

 

 

Label

1/2

No

 

 

 

Designated media 1

1/2

No

 

 

 

Fusing and delivery unit

The fusing and delivery unit fuses the toner onto the paper and delivers the printed page into the output bin. The following controls ensure optimum print quality:

48 Chapter 1 Theory of operation

ENWW

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HP Enterprise CC490A manual Fusing and delivery unit, Simplex printing, Duplex printing, Feed speed control
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