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Finish Texture, Besides paper handling problems

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Media Selection Specifications and Guidelines Curl Curl is curvature in a sheet of paper. Curl is typically measured by laying the sheet of paper on a flat surface, with the corners up, and measuring the height of the corners. In-ream curl is the amount of curl a sheet of paper has before printing. (In-ream curl may result from the paper manufacturing process or from exposure to the environment). Post-image curl is the amount of curl a sheet of paper has after printing (from exposure to the fusing process and paper path in the printer). Paper with excessive in-ream curl may lead to feeding and print quality problems. In addition paper with excessive post-image curl may be difficult to handle or use in automatic-feed photocopiers. The curl side of the paper can be identified by a slight concave bowing from the outside edges of the paper stack towards the center of the top sheet. This curled side is always the side that should face away from the printer's photoconductor. Having the curl side face away from the photoconductor helps the paper separate from the photoconductor surface during the printing process. Paper curl becomes more obvious after fusing of a print. If the curl of a printed page appears too excessive, it is likely that paper handling problems may occur during duplex printing. If this is the situation, open the paper tray and turn the paper over. Try printing again. If the problem is still not resolved, select a different paper for duplex printing, and reserve the "problem" paper for single-sided printing. Besides paper handling problems, excessive curl may also result in blurred print and similar print quality problems. The HP standard for in-ream paper curl is no more than 0.2 inches (5 mm) on any part of the paper, with 0.1 inches (3 mm) the optimal value. Finish (Texture) Finish, or texture, is the degree to which the surface is free of irregularities (or the smoothness or roughness of the paper). Using paper that meets HP specifications for surface texture is critical to the operation of D640 printers. The degree of surface texture is determined by the fiber composition of the paper, fillers which may have been added to the paper mixture, and the number of passes through the calendar stacks. Common paper textures included cockleshell, linen and laid. D-6 Using Paper

Section	Page
Contents	9
Ch 1: About Your Printer	17
Standard Features of the D640 Printer	17
Accessories For the D640 Printer	18
Full 600 x 600 Resolution	18
Rugged Construction for Long Life	18
Consumable Replacement and Tracking	18
Duplex Printing With No Performance Degradation	18
Toner Recycling and Economy Mode Printing	19
High Capacity Paper Handling	19
Custom Paper Size Support	19
Backlit LCD Display	19
Multiple Interfaces	19
PostScript Level 2	19
Compatibility with LaserJet 4Si/5Si Printer	20
PCL Level 5e	20
Integral Hard Disk	20
Energy Star Compliance	20
Getting to Know the Printer	21
Orientation	21
The D640 Printer	22
Front and Right Side of the Printer	23
Behind the Front Cover	25
Behind the Front Door	27
Behind the Upper Right Cover	29
Rear and Left Side of the Printer	31
High Capacity Input Accessory	32
High Capacity Output Accessory	33
Powering On the Printer	34
Ch 2: Control Panel	35
Introduction	35
Getting to Know the Control Panel	36
Control Panel Features and Functions	36
Checking Printer Status	37
Normal Printer Status (No Error Condition Displaye...	37
Abnormal Printer Status	38
Checking Paper	39
Function Buttons	40
Navigating Through the Control Panel	41
Custom Menu Settings	43
Printing Menu Settings	45
Configuration Menu Settings	48
PCL Menu Settings	53
Comms Menu Settings	55
Serial Interface Configuration Example	57
Maintenance Menu Settings	58
PapSize Menu Settings	60
Test Menu Settings	62
Ch 3: Printer Tasks	64
Introduction	64
Removing and Installing the Paper Trays	65
Adjusting Standard Tray Paper Guides	66
Setting Standard Paper Sizes	70
Adjusting Custom Tray Paper Guides	71
Setting Custom Paper Sizes	73
Configuring Custom Tray Menu Settings	74
Loading Paper Into Trays and HCI	79
Opening Paper	79
Locking Paper Trays	81
Stopping or Interrupting Print Jobs	84
Clearing a Paper Jam	85
Clearing Paper Input Jams	87
Clearing a Tray Pick Error Jam	87
Clearing a Feed Path Paper Jam	89
Clearing HCI Jams	95
Clearing HCI Jam 1	95
Clearing HCI Jam 2	97
Clearing Paper Path Jams	98
Clearing a Fuser Unit Jam	99
Clearing a Duplex Unit Jam	101
Clearing a Reversing Unit Area Jam	103
Clearing Paper Output Jams	106
Clearing an Ejection Unit Jam	106
Clearing an HCO Jam	108
Handling Error Messages and Troubleshooting	112
Error Reporting/Action Response	113
Ch 4: Ordering and Replacing Consumables	114
Introduction	114
Overview of Consumable Supplies	114
Ordering D640 Printer Consumables	115
Replacing Toner	117
Replacing the Toner Collector Bottle	120
Replacing the Cleaning Roller (When Indicated on C...	120
Replacing Developer	122
Discharging Developer	122
Adding New Developer	125
Installing Developer Collector Bottle	129
Replacing the Ozone Filter	130
Drum Kit - Replacing Drum and Transfer Assembly	131
Setting Up the Printer for Drum Kit Replacement	131
Removing the Transfer Assembly	132
Removing the Drum	134
Unpacking the New Drum	136
Installing the Drum	137
Installing the New Transfer Assembly	140
Fuser Kit - Replacing the Fuser	142
Removing the Fuser	143
Installing the Fuser	144
Printer Pick Roller Kit - Replacing the Tray Pick ...	146
At the Control Panel	146
Removing the Printer Pick Rollers (Upper and Lower...	146
New Printer Pick Roller Kit	150
Installing the Printer Lower Pick Rollers	150
Installing the Printer Upper Pick Rollers	152
Installing the Covers and Trays	154
HCI Pick Roller Kit - Replacing the HCI Pick Rolle...	155
At the Control Panel	155
Removing the HCI Pick Rollers (Upper and Lower)	155
New HCI Pick Roller Kit	159
Installing the HCI Lower Pick Rollers	162
Ch 5: Maintenance	164
Introduction	164
Weekly Cleaning	164
Removing Stray Toner	165
Precharger Area	166
Paper Feed Area	167
Paper Input Trays	167
Printer Exterior	168
Periodic Cleaning (When Replacing Drum)	168
Reversing Unit Area	168
Duplex Area	169
Transfer Assembly - Transfer LED Areas	169
Transfer Assembly Guide	172
LED Array Area	173
Reinstalling the Transfer Assembly	174
Ch 6: Advanced Topics	176
Maintaining Print Quality	176
Print Quality Troubleshooting	176
Print Quality Problems	177
Good Quality Print Sample	178
Specific Print Quality Problems	179
Managing Consumables	181
Toner	182
Drum and Developer	184
Fuser	185
Ozone Filter	186
Transfer Unit	186
Pushing Consumable Life Beyond Estimated Yields	186
Adjusting Paper Path Alignment	186
Printing Alignment Sheets	187
Measuring Alignment	190
Setting Alignment Values	195
Setting Up Edge-to-Edge Printing	198
Configuring for LaserJet IIIsi and 4si Compatibili...	199
Paper Input	199
Example Configuration	199
Using the LaserJet 5Si Driver	200
Using Virtual Font Cartridges	201
Ap A: Printer Messages	202
Printer Initialization Failure	202
Printer Reset	202
Printer Messages	203
Status Messages	204
Warning Messages	205
Paper Jam Messages	206
Error Messages	208
Call Engineer Error Messages and Codes	209
Ap B: Host Serial and Parallel Interface Configuration	215
Introduction	215
Using the Serial Interface	216
Using the Parallel Interface	218
Ap C: Specifications and Regulatory Information	219
Introduction	219
Printer Specifications	220
Best Printing Area Specifications	224
D640 Optional Accessories	225
High Capacity Input (HCI) Specifications	225
HCI Electrical Specifications	227
High Capacity Output (HCO) Specifications	228
HCO Paper Handling Specifications	228
HCO Physical Specifications	229
HCO Electrical Specifications	229
HCO Environmental Specifications	230
Printer Custom Paper Tray Specifications	230
PostScript Upgrade	230
Safety and Regulatory Information	231
FCC Statement (USA only)	231
DOC Statement (Canada only)	231
Europe RFI Statement	231
Acoustics Emissions	232
Data Communications (United Kingdom only)	232
Material Safety Data Sheets	232
EPA Energy Star Computer Compliance	233
Safety Standards and General Considerations	233
Laser Safety Standards	234
Printer Laser Equipment Compliance Label	234
Laser Safety Statement (USA Only)	234
Laser Safety Statement (Finland Only)	235
HP Declaration of Conformity	236
Ap D: Using Paper	237
Supported Print Media Types	237
Alternate Sources of Information	237
Paper Manufacturing	238
Sources of Paper	238
Packaging	239
Media Selection Specifications and Guidelines	239
Recommendations to the Customer	240
Potential Problems	243
Fusing Compatibility	244
Understanding Paper Ream Labels	245
General Guidelines	245
Recommended Paper Specification Summary	246
Pre-printed Forms and Letterhead	247
Adhesive Labels	248
Other Special Media	252
Things to Avoid	252
Purchasing, Handling, and Storing	252
Purchasing Information	253
Shipping	253
Storing	254
Environmental Considerations	254
Printer Normal Operating Environment	255
Troubleshooting	256
Evaluate Environmental Conditions	259
Ap E: Printing Reports	261
The Printer Setup Report	261
Setup Report, Page 1 Key	263
Setup Report, Page 2 Key	265
The Maintenance Report	266
Maintenance Report Key	266
The Typeface Report	268
Typeface Report Key	268
The Symbol Set Table Report	270
Symbol Set Table Report Key	270
The Printer Menu Settings Report	272
Printer Menu Settings Report Key	272
The Ripple Test Print	276
Troubleshooting with the Ripple Test Pattern	276
Ap F: Warranty and Support	278
Where To Call For Help	278
For installation and general printer questions, ca...	278
For hardware problems, call:	279
Warranty	283
HP Maintenance Agreements	283
HP5000 Model D640 Warranty	283

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Media Selection Specifications and Guidelines

D-6

Using Paper

Curl

Curl is curvature in a sheet of paper. Curl is typically measured by laying the sheet of paper on

a flat surface, with the corners up, and measuring the height of the corners. In-ream curl is the

amount of curl a sheet of paper has before printing. (In-ream curl may result from the paper

manufacturing process or from exposure to the environment). Post-image curl is the amount of

curl a sheet of paper has after printing (from exposure to the fusing process and paper path in

the printer). Paper with excessive in-ream curl may lead to feeding and print quality problems.

In addition paper with excessive post-image curl may be difficult to handle or use in

automatic-feed photocopiers.

The curl side of the paper can be identified by a slight concave bowing from the outside edges

of the paper stack towards the center of the top sheet. This curled side is always the side that

should face away from the printer’s photoconductor. Having the curl side face away from the

photoconductor helps the paper separate from the photoconductor surface during the printing

process.

Paper curl becomes more obvious after fusing of a print. If the curl of a printed page appears

too excessive, it is likely that paper handling problems may occur during duplex printing. If

this is the situation, open the paper tray and turn the paper over. Try printing again. If the

problem is still not resolved, select a different paper for duplex printing, and reserve the

“problem” paper for single-sided printing.

Besides paper handling problems, excessive curl may also result in blurred print and similar

print quality problems. The HP standard for in-ream paper curl is no more than 0.2 inches

(5 mm) on any part of the paper, with 0.1 inches (3 mm) the optimal value.

Finish (Texture)

Finish, or texture, is the degree to which the surface is free of irregularities (or the smoothness

or roughness of the paper). Using paper that meets HP specifications for surface texture is

critical to the operation of D640 printers. The degree of surface texture is determined by the

fiber composition of the paper, fillers which may have been added to the paper mixture, and

the number of passes through the calendar stacks. Common paper textures included

cockleshell, linen and laid.