Printing is faint ........................................................................................................................................................................ 641

Paper rubs against the Printhead ................................................................................................................................... 641

The edges of the paper are dirty .................................................................................................................................... 642

The surface of the paper is dirty .................................................................................................................................... 643

The back side of the paper is dirty ................................................................................................................................ 643

Printed colors are inaccurate ............................................................................................................................................ 643

Banding in different colors occurs ................................................................................................................................. 644

Colors in printed images are uneven ............................................................................................................................. 644

Image edges are blurred or white banding occurs .................................................................................................. 645

The contrast becomes uneven during printing ......................................................................................................... 645

The length of printed images is inaccurate in the feeding direction ............................................................... 646

Images are printed crooked ............................................................................................................................................... 646

Documents are printed in monochrome ...................................................................................................................... 646

Line thickness is not uniform ............................................................................................................................................ 646

Lines are misaligned .............................................................................................................................................................. 647

Printing is faint

Cause

You may be printing on the wrong side

of the paper.

The Printhead nozzles are clogged.

Because the printer was left without ink

tanks installed for some time, ink has

become clogged in the ink supply sys-

tem.

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 driv-

er is set to Standard or Fast.

You are printing on paper that tends to

generate dust when cut.

Paper rubs against the Printhead

Cause

The type of paper specified in the

printer driver does not match the type

loaded in the printer.

User's Guide

Downloaded from ManualsPrinter.com Manuals

Print on the printing surface.

Print a test pattern to check the nozzles and see if they are clogged.

(See "Checking for Nozzle Clogging.")

After the ink tanks have been installed for 24 hours, run Head Cleaning B from the Control

Panel.

(See "Cleaning the Printhead.")

Follow the steps below to remove the jammed piece of paper inside the Top Cover.

Open the Top Cover and make sure the Carriage is not over the Platen.

Remove any scraps of paper inside the Top Cover.

(See "Clearing Jammed Roll Paper.")

(See "Clearing a Jammed Sheet.")

Close the Top Cover.

Specify a longer drying period in the Control Panel menu, in Paper Details > Roll DryingTime.

(See "Menu Settings.")

P.459

➔

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.")

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.")

Corrective Action

P.599

➔

P.600

➔

P.629

➔

P.632

➔

P.393

➔

Corrective Action

P.375

➔

P.394

➔

Printing is faint

P.58

➔

641

Table of Contents

Problems With The Printing Quality; Printing Is Faint; Paper Rubs Against The Printhead - Canon iPF685 User Manual