Paper detection
The product detects the type of paper by monitoring the media sensor. The media sensor detects the
glossiness of paper by the reflected light and the thickness of paper by transmitted light. The DC controller
identifies the type of media (for example, plain paper, light paper, heavy paper, glossy paper, 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
The DC controller adjusts the feed speed to improve the print quality depending on the paper type. The paper
is fed at a specified speed according to the print mode designated by the formatter.
Table 1-19 Print mode and feed speed
Print mode Feed speed Media sensor detection
Normal 1/1 Yes
Heavy media 1 3/4 No
Heavy media 2 1/2 Yes
Heavy media 3 1/3 Yes
Light media 1 1/1 Yes
Light media 2 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 1/2 No
OHT 1/4 Yes
ENWW Pickup, feed, and delivery system 55
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