Problems with the printing quality. Canon IMAGEPROGRAF IPF840, imagePROGRAF iPF840 MFP M40
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iPF840 Printing is faint
Cause
You may be printing on the wrong side of the paper.
The Printhead nozzles are clogged.
Print on the printing surface.
Corrective Action
Print a test pattern to check the nozzles and see if they are clogged.
(See " Checking for Nozzle Clogging .")
To check for nozzles after printing, set Frequency in Nozzle Check in the Control Panel menu to a setting other than Off .
Furthermore, to have a warning displayed depending on the result of the nozzle check, set
Warning in Nozzle Check in the Control Panel menu to On .
Note that when Warning is set to On , printing may stop depending on the content of the warning.
After the ink tanks have been installed for 24 hours, run Head Cleaning B from the Control Panel.
(See " Cleaning the Printhead .")
Because the printer was left without ink tanks installed for some time, ink has become clogged in the ink supply system.
Paper is jammed inside the Top
Cover.
The ink was not dry when paper was cut.
Printing may be faint if Print
Quality in Advanced Settings in the printer driver is set to
Standard or Fast .
You are printing on paper that tends to generate dust when cut.
Follow the steps below to remove the jammed piece of paper inside the Top Cover.
1.
Open the Top Cover and make sure the Carriage is not over the Platen.
2.
Remove any scraps of paper inside the Top Cover.
(See " Clearing Jammed Roll Paper .")
(See " Clearing a Jammed Sheet .")
3.
Close the Top Cover.
Specify a longer drying period in the Control Panel menu, in Paper Details > Roll DryingTime .
In Advanced Settings of the printer driver, choose Highest or High in Print Quality .
Printing in Fast or Standard mode is faster and consumes less ink than in Highest or High modes, but the printing quality is lower.
(See " Giving Priority to Particular Graphic Elements and Colors for Printing .")
In the Control Panel menu, set CutDustReduct.
in Paper Details to On .
(See " Reducing Dust from Cutting Rolls .")
617
Paper rubs against the Printhead iPF840
Cause
The type of paper specified in the printer driver does not match the type loaded in the printer.
Paper has been loaded incorrectly, causing it to wrinkle.
The Printhead is set too low in the
Control Panel menu.
You are printing on heavyweight paper or paper that curls or wrinkles easily after absorbing ink.
When you have loaded paper, the paper you have loaded does not match the type selected on the Control Panel.
Corrective Action
Load paper of the same type as you have specified in the printer driver.
(See " Loading Rolls in the Printer .")
(See " Loading Sheets in the Printer .")
Make sure the same type of paper is specified in the printer driver as you have loaded in the printer.
1.
Press the Stop button and stop printing.
2.
Change the type of paper in the printer driver and try printing again.
Reload the paper.
(See " Loading Rolls in the Printer .")
(See " Loading Sheets in the Printer .")
In the Control Panel menu, set Head Height to Automatic .
(See " Troubleshooting Paper Abrasion and Blurry Images .")
For paper-based media such as Heavyweight Coated Paper, set the VacuumStrngth to
Strong or Strongest in the Control Panel menu. If the paper still rubs against the printhead, set the Head Height in the Control Panel menu to a higher value than the current setting.
(See " Adjusting the Vacuum Strength .")
(See " Troubleshooting Paper Abrasion and Blurry Images .")
For film-based media such as Tracing Paper, set the VacuumStrngth to Standard , Strong or Strongest in the Control Panel menu. If the paper still rubs against the printhead, set the
Head Height in the Control Panel menu to a higher value than the current setting.
(See " Adjusting the Vacuum Strength .")
(See " Troubleshooting Paper Abrasion and Blurry Images .")
When printing on paper 0.1 mm (0.004 in) thick or less, choose a VacuumStrngth setting of
Weakest in the Control Panel menu. If rubbing still occurs, in the Control Panel menu, use a higher Head Height setting.
(See " Adjusting the Vacuum Strength .")
(See " Troubleshooting Paper Abrasion and Blurry Images .")
Be sure to select the correct type of paper in the Control Panel menu when loading paper.
(See " Loading Rolls in the Printer .")
(See " Loading Sheets in the Printer .")
618
Cause
The Platen has become dirty after borderless printing or printing on small paper.
The type of paper as specified on the printer does not match the type specified in the printer driver.
The paper is wrinkled or warped.
A cut line is printed because CutDustReduct.
is On in the Control Panel menu to reduce cutting dust.
The Printhead is set too low in the
Control Panel menu.
Corrective Action
Open the Top Cover and clean the Platen.
(See " Cleaning Inside the Top Cover .")
Make sure the same type of paper is specified on the printer as in the printer driver.
(See " Changing the Type of Paper .")
Make sure the same paper type is specified in the printer driver as on the printer.
1.
Press the Stop button and stop printing.
2.
Change the type of paper in the printer driver and try printing again.
Straighten out the wrinkles or curls and reload the paper. Do not use paper that has been printed on previously.
(See " Loading Rolls in the Printer .")
(See " Loading Sheets in the Printer .")
If this function is not needed, set CutDustReduct.
to Off in the Control Panel menu.
In the Control Panel menu, set Head Height to Automatic .
(See " Troubleshooting Paper Abrasion and Blurry Images .")
iPF840 The surface of the paper is dirty
Cause
You are printing on heavyweight paper or paper that curls or wrinkles easily after absorbing ink.
The Ejection Guide is soiled.
Corrective Action
For paper-based media such as Heavyweight Coated Paper, set the VacuumStrngth to
Strong or Strongest in the Control Panel menu. If the paper still rubs against the printhead, set the Head Height in the Control Panel menu to a higher value than the current setting.
(See " Adjusting the Vacuum Strength .")
(See " Troubleshooting Paper Abrasion and Blurry Images .")
For film-based media such as Tracing Paper, set the VacuumStrngth to Standard ,
Strong or Strongest in the Control Panel menu. If the paper still rubs against the printhead, set the Head Height in the Control Panel menu to a higher value than the current setting.
(See " Adjusting the Vacuum Strength .")
(See " Troubleshooting Paper Abrasion and Blurry Images .")
Clean the Ejection Guide.
(See " Cleaning the Printer Exterior .")
Cause
The Paper Retainer is soiled.
You are using a paper that does not dry easily.
Corrective Action
Clean the Paper Retainer.
(See " Cleaning Inside the Top Cover .")
In the Control Panel menu, set Roll DryingTime to at least 1 min.
When paper that does not dry easily is used for printing, it may curl during printing and touch the
Output Tray.
In this case, in the Control Panel menu, complete the settings for Dry time and Area in Scan
Wait Time .
However, note that printing will now take longer.
Cause
The Platen has become dirty after borderless printing or printing on small paper.
The Platen has become soiled because you have set Width Detection to Off in the Control Panel menu.
The Platen suction is too strong.
Corrective Action
Open the Top Cover and clean the Platen.
(See " Cleaning Inside the Top Cover .")
In the Control Panel menu, set CarriageScanWdth to Fixed .
Set Width Detection to On in the Control Panel menu, and then open the Top
Cover and clean the Platen.
(See " Cleaning Inside the Top Cover .")
Open the Top Cover and clean the Platen. After this, manually advance the roll onto the Platen before printing.
(See " Cleaning Inside the Top Cover .")
(See " Feeding Roll Paper Manually .")
In the Control Panel menu, reduce the level of VacuumStrngth .
(See " Adjusting the Vacuum Strength .")
Cause
Color adjustment has not been activated in the Advanced Settings of the printer driver.
Colors have not been adjusted on the computer or monitor.
The Printhead nozzles are clogged.
Corrective Action
In the Advanced Settings of the printer driver, access Color Settings in Color Mode to adjust colors.
(See " Main Sheet (Windows) .")
Refer to the computer and monitor documentation to adjust the colors.
Adjust the settings of the color management software, referring to the software documentation as needed.
Print a test pattern to check the nozzles and see if they are clogged.
619
Banding in different colors occurs iPF840
Cause
The Printhead nozzles are clogged.
Application Color Matching Priority is set to Off in the Windows printer driver.
Color may change slightly even on the same model of printer if you use a different version of the firmware or printer driver, or when you print under different settings or in a different printing environment.
Corrective Action
(See " Checking for Nozzle Clogging .")
Click Special Settings in the Layout sheet of the printer driver, and set Application Color Matching Priority to On in the dialog box that is displayed.
(See " Layout Sheet (Windows) .")
Follow these steps to prepare the printing environment.
1.
Use the same version of firmware or printer driver.
2.
Specify the same value for all settings items.
Cause
The paper feed amount is out of adjustment.
Printing does not proceed smoothly because print jobs are interrupted during transmission.
In the Control Panel menu, Adj. Priority is set to Print Length .
The Printhead is out of alignment.
The Printhead nozzles are clogged.
Streaks may occur if you set the Print
Quality too low.
The type of paper specified in the printer driver does not match the type loaded in the printer.
Corrective Action
Adjust the feed amount.
(See " Adjusting the Feed Amount .")
Exit other applications and cancel other print jobs.
Setting Adj. Priority to Print Quality in the Control Panel menu and adjusting the feed amount may improve results.
(See " Adjusting the Feed Amount .")
Adjust the Printhead alignment.
(See " Automatic Adjustment to Straighten Lines and Colors .")
Print a test pattern to check the nozzles and see if they are clogged.
(See " Checking for Nozzle Clogging .")
Choose a higher level of Print Quality in the Advanced Settings of the printer driver and try printing again.
Printing in Fast or Standard mode is faster and consumes less ink than in Highest or
High modes, but the printing quality is lower.
(See " Giving Priority to Particular Graphic Elements and Colors for Printing .")
Load paper of the same type as you have specified in the printer driver.
(See " Loading Rolls in the Printer .")
(See " Loading Sheets in the Printer .")
Make sure the same type of paper is specified in the printer driver as you have loaded in the printer.
1.
Press the Stop button and stop printing.
2.
Change the type of paper in the printer driver and try printing again.
620
Cause
Line Drawing/Text is selected when printing images in many solid colors.
You are printing on paper that curls easily.
Printed colors may be uneven if you set the Print Quality too low.
Color may be uneven between dark and light image areas.
Corrective Action
In Print Priority in the Advanced Settings of the printer driver, choose Image .
Printed colors may appear uneven on the leading edge of paper that is susceptible to curling. Select a stronger level in VacuumStrngth in the Control Panel menu to increase suction against the paper, or specify a leading margin of 20 mm (0.79 in) or more.
(See " Adjusting the Vacuum Strength .")
Choose a higher level of Print Quality in the Advanced Settings of the printer driver.
Printing in Fast or Standard mode is faster and consumes less ink than in Highest or
High modes, but the printing quality is lower.
(See " Giving Priority to Particular Graphic Elements and Colors for Printing .")
Select Unidirectional Printing in the Advanced Settings of the printer driver.
iPF840 Image edges are blurred or white banding occurs
Cause
When borderless printing is used, the edge of the paper is cut during printing.
Thus, ink density may be slightly uneven at the leading edges.
The Printhead is out of alignment.
Corrective Action
Specify No in Automatic Cutting in the printer driver before printing. In this case, the paper can be printed without borders on the left and right sides only. Cut the printed document ejected from the printer, and then use scissors or a cutting tool to cut away the edges on the top and bottom.
Choose a higher level of Print Quality in the Advanced Settings of the printer driver.
(See " Giving Priority to Particular Graphic Elements and Colors for Printing .")
Adjust the Printhead alignment.
(See " Automatic Adjustment to Straighten Lines and Colors .")
To avoid uneven colors, we recommend drying each sheet separately.
Allowing printed documents to dry on top of each other may cause uneven colors.
Density may be uneven if you use
Glossy Paper or Coated Paper.
The type of paper specified in the printer driver does not match the type loaded in the printer.
Scan Wait Time > Area in the Control
Panel menu is set to Leading edge .
In Advanced Settings of the printer driver, choose Highest or High in Print Quality .
Load paper of the same type as you have specified in the printer driver.
(See " Loading Rolls in the Printer .")
(See " Loading Sheets in the Printer .")
Make sure the same type of paper is specified in the printer driver as you have loaded in the printer.
1.
Press the Stop button and stop printing.
2.
Change the type of paper in the printer driver and try printing again.
When Scan Wait Time > Area is set to Leading edge , colors may be uneven 110–160 mm from the leading edge. (The position varies depending on the Print Quality setting.)
In this case, select Scan Wait Time > Area > Entire area .
However, note that printing will now take longer.
Cause
The Platen suction is too strong.
Incorrect Printhead alignment value.
The type of paper specified in the printer driver does not match the type loaded in the printer.
Corrective Action
In the Control Panel menu, reduce the level of VacuumStrngth .
(See " Adjusting the Vacuum Strength .")
Close the blue Switch on the platen so that it matches the paper size.
(See " Setting the Blue Switch on the Platen .")
In the Control Panel menu, set Head Height to a lower height.
(See " Troubleshooting Paper Abrasion and Blurry Images .")
Load paper of the same type as you have specified in the printer driver.
(See " Loading Rolls in the Printer .")
(See " Loading Sheets in the Printer .")
Make sure the same type of paper is specified in the printer driver as you have loaded in the printer.
1.
Press the Stop button and stop printing.
2.
Change the type of paper in the printer driver and try printing again.
If printed documents exhibit the following symptoms, adjust the setting of the blue Switch on the Platen.
• Image edges are blurred
• Image edges are affected by white banding
Important
• Always set all of the blue Switches on the Platen to the ● side for borderless printing. If the Switch are not set correctly, the print quality may deteriorate.
1
Remove any loaded paper that will not be used.
•
Rolls (See " Removing the Roll from the Printer .")
621
Setting the Blue Switch on the Platen iPF840
•
Sheet (See " Removing Sheets .")
2
Open the Top Cover.
3
Remove the Cleaning Brush (a).
a
4
Using the back of the Cleaning Brush, move the first Switch to the side opposite ●.
622
iPF840 Setting the Blue Switch on the Platen
5
Refer to the following table to confirm the number on the
Platen (a) that corresponds to the size of paper for printing.
a
11
10
9
8
7
6 5 4
3
2
8
9
6
7
10
11
4
5
2
3
Number Dimensions
254.0 mm (10.00 in)
355.6 mm (14.00 in)
431.8 mm (17.00 in)
515.0 mm (JIS B2 or B3)
594.0 mm (ISO A1 or A2) or 609.6 mm (24.00 in)
841.0 mm (ISO A0 or A1)
914.4 mm (36.00 in)
1030.0 mm (JIS B0 or B1)
1066.8 mm (42.00 in)
1117.6 mm (44.00 in)
6
Using the back of the Cleaning Brush, move the Switch to the side opposite ●, corresponding to the size of the paper for printing.
In this case, note that you will move the switch in the opposite direction from the direction in step 4.
Note
• The Switch only moves number 1 and the number that matches the paper size. Set all of the switches where the number does not match the paper size in switches number 2 and higher to the ● side.
623
The contrast becomes uneven during printing iPF840
7
Close the Top Cover.
Cause Corrective Action
The paper feed amount is out of adjustment.
Adjust the feed amount.
(See " Adjusting the Feed Amount .")
The type of paper specified in the printer driver does not match the type loaded in the printer.
Load paper of the same type as you have specified in the printer driver.
(See " Loading Rolls in the Printer .")
(See " Loading Sheets in the Printer .")
Make sure the same type of paper is specified in the printer driver as you have loaded in the printer.
1.
Press the Stop button and stop printing.
2.
Change the type of paper in the printer driver and try printing again.
Cause
In the Control Panel menu, Adj. Priority is set to Print Quality .
The type of paper specified in the printer driver does not match the type loaded in the printer.
Corrective Action
Set Adj. Priority to Print Length in the Control Panel menu, and then execute Adjust
Length .
(See " Adjusting the Feed Amount .")
Load paper of the same type as you have specified in the printer driver.
(See " Loading Rolls in the Printer .")
(See " Loading Sheets in the Printer .")
Make sure the same type of paper is specified in the printer driver as you have loaded in the printer.
1.
Press the Stop button and stop printing.
2.
Change the type of paper in the printer driver and try printing again.
Cause Corrective Action
In the Control Panel menu, Skew Check Lv.
is set to Loose or Off . In the Control Panel menu, set Skew Check Lv.
to Standard .
In the Control Panel menu, Width Detection is set to Off .
Set Width Detection to On in the Control Panel menu.
624
Cause
In the Advanced Settings of the printer driver, Monochrome , Monochrome (BK ink) , or Monochrome
Bitmap is specified in Color Mode .
The Printhead nozzles are clogged.
Corrective Action
In the Advanced Settings of the printer driver, specify Color in Color Mode and try printing again.
Print a test pattern to check the color ink nozzles and see if they are clogged.
(See " Checking for Nozzle Clogging .")
iPF840 Line thickness is not uniform
Cause
In the Special Settings dialog box of the Windows printer driver, Fast
Graphic Process is set to On .
The type of paper specified in the printer driver does not match the type loaded in the printer.
The blue Switch on the platen is set incorrectly.
Corrective Action
Access the printer driver Properties dialog box from Print in the File menu of the source application, and follow these steps to print.
1.
Clear the option Open Preview When Print Job Starts on the Main sheet.
2.
Clear the option Page Layout on the Layout sheet.
3.
Click the Special Settings button in the Layout sheet, open the Special Settings dialog box, and set Fast Graphic Process to Off .
Load paper of the same type as you have specified in the printer driver.
(See " Loading Rolls in the Printer .")
(See " Loading Sheets in the Printer .")
Make sure the same type of paper is specified in the printer driver as you have loaded in the printer.
1.
Press the Stop button and stop printing.
2.
Change the type of paper in the printer driver and try printing again.
Move the Switch numbered corresponding to the size of paper for printing opposite to the ● position.
(See " Setting the Blue Switch on the Platen .")
Cause
The Printhead alignment is not adjusted.
The type of paper specified in the printer driver does not match the type loaded in the printer.
Corrective Action
Adjust the Printhead alignment.
(See " Automatic Adjustment to Straighten Lines and Colors .")
(See " Manual Adjustment to Straighten Lines and Colors .")
(See " Adjusting Line Misalignment .")
Load paper of the same type as you have specified in the printer driver.
(See " Loading Rolls in the Printer .")
(See " Loading Sheets in the Printer .")
Make sure the same type of paper is specified in the printer driver as you have loaded in the printer.
1.
Press the Stop button and stop printing.
2.
Change the type of paper in the printer driver and try printing again.
625
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