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Lexmark C720 User's Guide - Page 31

Image Smoothing, Printing text, Spot function - driver download

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Spot function The spot function determines the shape of the dots by controlling the order in which the pels in the halftone cell are turned on. The printer code defines the order by assigning a priority to each individual pel within the halftone cell. By turning on or printing a portion of the pels within the halftone cell and then combining the different halftone screens, your printer is able to print millions of colors. Image Smoothing You can turn Image Smoothing on from the graphics tab of your printer driver or through the PostScript Menu using MarkVision or the operator panel. This increases the contrast and sharpness of bitmapped images and smooths color transitions. This setting is useful for images downloaded from the World Wide Web at 72 dpi. The setting has no effect on images downloaded at 300 dpi resolution or higher. Printing text In both PostScript and PCL emulations, 100% black text prints using black toner (K of CMYK). This results in sharp, crisp text characters. The printer applies a unique screening algorithm to small text (less than 24 points in size). This helps ensure that small point size text has smooth, crisp edges. 31

Section	Page
Home	3
Printer overview	9
Introducing your printer	9
Using your documentation	11
Using printer drivers	12
Changing printer settings	13
Understanding the operator panel	14
Changing menu settings	15
Locking the menus	16
Using Print and Hold	18
Printing and deleting heldjobs	18
Repeat Print	20
Reserve Print	20
Verify Print	20
Confidential Jobs	20
Understanding color	22
Types of color	22
How we see color	22
Primary colors	23
Color difference	24
Managing color	26
Device profile	26
Color calibration	26
Translation between color models	26
Popular color management systems	27
Controlling printed output	28
Driver Settings	28
Halftone screens	30
Image Smoothing	31
Printing text	31
Color correction	32
Auto	32
Display	32
CMYK	32
Black and White	33
2-Color Draft	33
Off	33
Vivid	33
Avoiding print quality problems	34
Media and supplies	34
Transparencies	34
Paper sources and output	35
Paper sizes	37
Paper size sensing	37
Media guidelines	39
Paper	39
Transparencies	40
Envelopes	40
Labels	41
Card stock	41
Storing media	42
Avoiding paper jams	43
Loading media	44
Tray linking	52
Suppliesoverview	53
Supplies	55
Toner cartridges	55
Ordering supplies	61
Storing supplies	62
Replacing supply items	63
Replacing supplies	63
Replacing toner cartridges	64
Replacing the photo developer cartridge	69
Replacing the oil bottle	76
Replacing the cleaning roll	79
Replacing the waste toner bottle	84
Replacing the fuser and air filter kit	91
Replacing the maintenance kit	102
Recycling used supplies	115
Conserving supplies	116
Toner Saver	116
2-Color Draft	116
Black and White	116
Moving your printer	118
Moving the printer	118
Theory of operation	133
Solving printing problems	135
Understanding printer messages	141
ActivatingMenu Changes	146
AdjustingFuser Temperature	146
Busy	146
CancelingJob	147
ClearingJob AccountingStat	147
CloseDoor<x>	147
Defragmenting	147
DeleteAllJobs	148
DeletingJobs	148
Didyoureplace Fuser?	148
Didyoureplace FuserCleaner?	149
Didyoureplace MaintenanceKit?	149
Didyoureplace Photo DevCart?	149
DisablingMenus	150
EnablingMenus	150
EngineWarming	150
EnterPIN: =___	151
Fileswillbe Lost	151
FlushingBuffer	151
FormattingDisk	151
FormattingFlash	152
HeldJobsmaybe lost	152
InsertTray<x>	152
Invalid Network<x>Code	153
LocalTalk<x>	153
MenusDisabled	153
NetworkCard Busy	153
Network<x>	154
NoJobsFound. Retry?	154
NotReady	154
Parallel <x>	154
Performing SelfTest	155
PowerSaver	155
PrintJobson Disk	155
Printing DirectoryList	155
Printing FontList	156
PrintingJob AccountingStat	156
PrintingMenu Settings	156
ProgSystemCode	156
Program Flash	157
ProgrammingDisk	157
Queuingand DeletingJobs	157
QueuingJobs	157
Ready	158
ReadyHex	158
Resettingthe Printer	158
Resetting MaintCntValue	158
RestoringFactory Defaults	159
Serial <x>	159
Supplies	159
Tray<x>Empty	159
Tray<x>Missing	160
Waiting	160
2<xx>PaperJam	160
30<color>Toner Cart Missing	160
37Insufficient CollationArea	161
37Insufficient DefragMemory	161
37Insufficient Memory	161
38MemoryFull	162
39ComplexPage	162
51Defective Flash	163
52FlashFull	163
53Unformatted Flash	163
54Serial Option<x>Error	163
54Network<x> SoftwareError	164
54StdNetwork SoftwareError	164
54StdParENA ConnectionLost	164
54Par<x>ENA ConnectionLost	164
55Insufficient FaxBuffer	164
56Serial Port<x>Disabled	165
56Parallel Port<x>Disabled	165
56StdParallel PortDisabled	165
58TooMany DisksInstalled	165
58TooMany FlashOptions	166
61Defective Disk	166
62DiskFull	166
63Unformatted Disk	167
70–79 <message>	167
80Scheduled Maintenance	167
80Transfer RollerMissing	168
81OilBottle EmptyorMissing	168
81OilBottle Low	168
82Photo Dev Cart Exhausted	169
82Photo Dev Cart Missing	169
83WasteBottle FullOrMissing	169
83WasteToner BottleNearFull	170
84TransferDrum Exhausted	170
85FuserCleaner Exhausted	170
85FuserCleaner Missing	171
86InsertTray2	171
87Fuser Exhausted	171
87Fuser Missing	171
88<color> TonerEmpty	172
88<color>Toner Low	172
900–999 Service <message>	173
961-963 Service RAM Memory Error	173
970-979 Service Network Card <x>	173
Clearing paper jams	174
Paper jam messages	174
Clearing paper jams in the duplex unit	185
Cleaning the photo developer charger	190
Calling for customer support	195
Using the operator panel	196
Printing a menu settings page	196
Changing the Paper Type setting	199
Using printer menus	200
Color Menu	207
Print Quality	207
Photo Enhance	207
Color Correction	208
Finishing Menu	209
Blank Pages	209
Collation	209
Copies	210
Duplex	210
Duplex Bind	210
Multipage Border	211
Multipage Order	211
Multipage Print	211
Multipage View	212
Separator Sheets	212
Separator Source	213
Infrared Menu	214
Infrared Buffer	214
Infrared Port	215
Job Buffering	215
Max Baud Rate	215
NPA Mode	216
PCL SmartSwitch	216
PS SmartSwitch	216
Transmit Delay	217
Window Size	217
Job Menu	218
Cancel Fax	218
Confidential Job	218
Held Jobs	219
Reset Printer	219
LocalTalk Menu	220
Job Buffering	220
LocalTalk Addr	220
LocalTalk Buffer	221
LocalTalk Name	221
LocalTalk Port	221
LocalTalk Zone	222
NPA Hosts	222
NPA Mode	222
PCL SmartSwitch	222
PS SmartSwitch	223
Network Menu	224
Job Buffering	224
Network Buffer	225
Network<x> Setup	225
NPA Mode	225
PCL SmartSwitch	226
PS SmartSwitch	226
MAC Binary PS	227
Paper Menu	228
Custom Types	228
Paper Loading	228
Paper Size	229
Paper Source	229
Paper Type	230
Paper Weight	230
Substitute Size	231
Parallel Menu	232
Advanced Status	232
Honor Init	232
Job Buffering	233
NPA Mode	233
Parallel Buffer	233
Parallel Mode1	234
Parallel Mode2	234
PCL SmartSwitch	234
PS SmartSwitch	235
Protocol	235
PCL Emul Menu	236
A4 Width	236
Auto CR after LF	236
Auto LF after CR	237
Font Name	237
Font Source	237
Lines per Page	238
Orientation	238
Pitch	238
Point Size	239
Symbol Set	239
Tray Renumber	239
PostScript Menu	241
Font Priority	241
Image Smoothing	241
Print PS Error	242
Serial Menu	243
Baud	243
Data Bits	244
Honor DSR	244
Job Buffering	244
NPA Mode	245
Parity	245
PCL SmartSwitch	245
PS SmartSwitch	246
Robust XON	246
RS-232/RS-422	246
RS-422 Polarity	247
Serial Buffer	247
Serial Protocol	247
Setup Menu	249
Alarm Control	249
Auto Continue	249
Display Language	250
Download Target	250
Jam Recovery	250
Job Accounting	251
Job Buffer Size	251
Page Protect	251
Power Saver	252
Print Timeout	252
Printer Language	253
Resource Save	253
Wait Timeout	253
Print Area	254
Toner Saver	254
Left Margin	254
Supplies Menu	255
<color>Toner	255
Fuser	255
Fuser Cleaner	256
Oil Bottle	256
Photo DevCart	256
Tray<x> Status	257
Waste Bottle	257
Maintenance	257
Replace Supplies	258
Supplies Life	258
USB Menu	260
Job Buffering	260
NPA Mode	261
PCL SmartSwitch	261
PS SmartSwitch	261
USB Buffer	262
MAC Binary PS	262
Utilities Menu	263
Defragment Flash	263
Factory Defaults	263
Format Disk	264
Format Flash	264
Hex Trace	265
Job Acct Stat	265
Print Directory	265
Print Fonts	265
Print Menus	266
Print Net <x> Setup	266
Printer specifications	267
Printer software and utilities	270
MarkVision printer management software	270
MarkVision Professional	270
MarkVision for UNIX networks	271
MarkVision Messenger	272
Lexmark MarkTrackTM	272
Lexmark NetPnP	273
Managing memory	274
Printer memory	274
Adding memory	274
Flash memory	275
Hard disk	276
Managing resources downloaded to flash or disk	276
Removing memory and network options	277
Notices	285
Trademarks	286
Safety information	287
Cautions and warnings	287
Statement of limited warranty	287
Electronic emission notices	289
German acoustics statement	292
Energy Star	292
Laser notices	292

Match case Limit results 1 per page

Spot function

The spot function determines the shape of the dots by controlling the order in which the pels in the

halftone cell are turned on. The printer code defines the order by assigning a priority to each individual

pel within the halftone cell. By turning on or printing a portion of the pels within the halftone cell and

then combining the different halftone screens, your printer is able to print millions of colors.

Image Smoothing

You can turn Image Smoothing on from the graphics tab of your printer driver or through the PostScript

Menu using MarkVision or the operator panel. This increases the contrast and sharpness of bitmapped

images and smooths color transitions. This setting is useful for images downloaded from the World

Wide Web at 72 dpi. The setting has no effect on images downloaded at 300 dpi resolution or higher.

Printing text

In both PostScript and PCL emulations, 100% black text prints using black toner (K of CMYK). This

results in sharp, crisp text characters. The printer applies a unique screening algorithm to small text

(less than 24 points in size). This helps ensure that small point size text has smooth, crisp edges.