HP Color LaserJet Enterprise CP4020 Service Manual - Page 80

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 1-14 Print 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