Auteur/autrice : adminmatthieu

Quick answer: Compare a normal computer print, a flatbed scan and an automatic-feeder scan. A line only in feeder scans points toward the feeder’s narrow glass strip rather than the ink or toner.

Use three outputs to isolate the source

Changing ink cartridges is a poor first test when the defect exists in the scanned file itself. Start with a clean original that has no line on it. View the scan on screen, not just as a printed copy, so you can distinguish a captured defect from an output defect.

1. Print a short document from the computer and inspect it.
2. Scan the same clean original on the large flatbed glass, if your device has one.
3. Scan it through the automatic document feeder (ADF), if supported.
4. Label or save the results separately so you can compare where the line appears.

Find the glass used by the document feeder

Many all-in-ones have a narrow strip of glass beside the larger flatbed. During feeder scanning the sheet passes over this stationary reading area. A small mark there can become a long line in the resulting image. Some two-sided feeders have a second scanning surface; identify it in the exact model’s manual.

Clean without adding a new defect

1. Follow the manufacturer’s instructions for shutting down and safely opening the scanner.
2. Use a soft lint-free cloth with the approved amount and type of cleaner or water.
3. Apply liquid to the cloth, not directly onto the machine or glass.
4. Clean the relevant glass and accessible backing gently, then dry them as instructed.
5. Repeat the same scan and compare it with the saved baseline.

Do not use abrasives, blades or unapproved solvents. Do not remove the glass or casing to reach an apparent mark beneath it. A scratch is not dirt and will not improve with harder scrubbing. The approved cleaning products can differ by surface and model.

If the line remains

Check whether it stays in the same position across several clean originals and whether it appears on one or both scanned sides. Those observations help support identify the affected scan path. Repeat the comparison after a restart if the model’s guidance recommends it, but avoid changing resolution and cleaning several areas at once without retaining a baseline.

A usable workaround while waiting for service

If flatbed scans are clean, use the flatbed for important documents when practical. Check the full saved image before sending it. This does not repair the feeder, but it can avoid distributing unreadable pages while the hardware is inspected.

Send support the model, labelled comparison images and whether cleaning changed the defect. Use a non-sensitive test document rather than a customer’s record.

Related troubleshooting

• White Lines or Streaks in Inkjet Prints: Read the Nozzle Test
• Printer Prints Blank Pages: Test the Printer Before the Document

Official references

• HP: scan-quality diagnosis
• HP: ADF glass and line diagnosis

Reviewed against the linked documentation on October 7, 2026. Menu names and supported features vary by model and software version. This guide is independent; it does not claim hands-on testing of every printer.

Quick answer: Match the loaded paper and selected paper size, then use Fit for ordinary documents. For labels, templates or measured drawings, preserve actual size and solve the layout or paper mismatch instead of silently shrinking it.

Find out whether the content is already missing in preview

Open print preview before sending another job. If the bottom or right side is absent there, the app’s layout or scaling is the first place to investigate. If preview is complete but output is cropped, compare the selected printer, physical paper and printable area. Save a sample rather than changing every setting at once.

Check all three paper-size choices

1. Read the actual paper size loaded in the tray. A4 is 210 × 297 mm; US Letter is 8.5 × 11 inches. They are not interchangeable.
2. Set the same paper size in the printer preferences or print dialog.
3. Check the document’s own page setup or PDF page dimensions.
4. If the printer registers tray contents on its display, make that registration agree too.

A printer requesting another paper size may hold the job or print differently than expected. Correct the mismatch, cancel the old job and send a one-page test. Do not force a size-warning override before understanding what the document needs.

Choose scaling for the actual task

In Acrobat, Size under Page Sizing & Handling offers Fit, Actual size, Shrink oversized pages and Custom Scale. Actual size does not shrink material that is larger than the chosen output area, so cropping can be expected. Fit changes physical dimensions, which is unacceptable for some templates.

Respect the printable margins

Many printers cannot place marks at every edge in ordinary mode. Move essential content inside the printable area or use supported borderless media and settings when that is truly the intended output. Borderless photo modes may enlarge and crop an image; they are not a universal way to print an exact-sized technical drawing.

If only a spreadsheet or webpage is affected

Review the app’s print area, page breaks, columns and orientation. A very wide sheet may be split across pages rather than lost. Compare the preview page count and inspect the next page before deciding that the printer cut off a column.

Verify with a single representative page

Print the page containing the bottom line or far-right column. For exact-size output, include a known measurement and check it with a ruler. If the result fits but dimensions changed, the problem has been hidden rather than solved.

Record the working size and scale as a preset where appropriate. Keep separate presets for ordinary reports and measured templates so that a later job does not inherit the wrong scaling.

Related troubleshooting

• Printer Says Out of Paper When the Tray Is Full: Fix the Feed
• Double-Sided Printing Upside Down: Long Edge or Short Edge?

Official references

• Adobe: page scaling options
• HP: paper-size mismatch

Reviewed against the linked documentation on October 7, 2026. Menu names and supported features vary by model and software version. This guide is independent; it does not claim hands-on testing of every printer.

Quick answer: Change the duplex binding edge to match how you turn the page. For a portrait document read like a book, start with long-edge binding; test two labelled pages before printing the full file.

The binding edge controls how the back is oriented

A page can print correctly on the front yet appear upside down when you turn it the way you intended. Before rotating the source document, inspect the two-sided setting. Long-edge and short-edge binding describe the physical edge around which the sheet is turned.

Driver labels vary: you may see Flip on long edge, Long-edge binding or a binding diagram. Use the diagram if wording is unclear. Mixed portrait and landscape pages can require separate tests rather than one global assumption.

Make a two-page orientation test

1. Create two pages labelled PAGE 1 and PAGE 2, each with TOP printed near its upper edge.
2. Select the desired portrait or landscape orientation.
3. Enable two-sided printing and choose the binding edge from the table.
4. Print only these two pages on one sheet.
5. Turn the sheet exactly as you will read the finished document. If the back is upside down, change only the binding edge and retest.

This small test is more informative than wasting a full report. Keep the successful settings written down, especially if you alternate between portrait reports and landscape spreadsheets.

Find the setting in the right place

In Acrobat or Reader, look for Print on both sides of paper and the edge-to-flip choice. If the application does not expose it, inspect the printer’s properties or preferences. Availability depends on the installed driver and printer capability; the app cannot add a physical duplex unit that the model lacks.

Manual duplex needs a loading test too

When the printer has no automatic duplex support, the app may ask you to reload the stack. Follow its prompt and the model’s tray orientation instructions. Use one marked scrap sheet first to identify which side and edge re-enter the printer. Different output trays reverse stacks differently, so a universal “face up” instruction would be unreliable.

If the back is missing rather than upside down

That is a different symptom. Check whether two-sided printing is actually enabled, whether the selected queue exposes duplex, and whether the loaded paper size and type support automatic two-sided use. Return to plain supported media for a baseline test.

Save the correct preset

Once both sides read correctly, save a clearly named preset if your app supports it, such as Portrait book duplex. Recheck the print preview for the real document, including page range and orientation. A printer firmware reset is not the first response to a binding-edge mistake.

Related troubleshooting

• Windows 11 Keeps Choosing the Wrong Printer: Set a Stable Default
• Printer Says Paper Jam but No Paper Is Visible: Inspect the Right Path

Official references

• Adobe: print PDFs and duplex options
• Brother: automatic two-sided printing example
• Canon MB2300: supported duplex media

Reviewed against the linked documentation on October 7, 2026. Menu names and supported features vary by model and software version. This guide is independent; it does not claim hands-on testing of every printer.

Quick answer: Check the selected tray, paper settings and loading before cleaning anything. Test a small stack of supported plain paper, then follow your exact model’s pickup-roller instructions if feeding still fails.

Read the tray named in the message

“Out of paper” can mean the job requests a tray or size that is not available, even when another tray is full. Record the message and compare it with the paper source selected in the print dialog. A document feeder used for scanning is not the same thing as the printer’s input tray.

Reload a controlled test stack

1. Cancel duplicate jobs and remove the paper from the indicated tray.
2. Check for bent corners, moisture, curled sheets, scraps or foreign objects.
3. Load a modest stack of clean, flat paper supported by the printer. Do not mix sizes or media types.
4. Align the stack and set the guides to its edges without squeezing or bending it. Stay below the tray fill mark.
5. Seat the tray fully, select matching size and type, then send one page.

Do not push the stack into moving rollers during a test. If the printer requires a specific rear-feed or manual-feed method for specialist media, use its manual rather than improvising with the main tray.

Use the result to distinguish settings from feeding

Check the job’s paper request

Open the print dialog and compare its requested paper size and source with the actual tray. A4 and US Letter are different sizes. If the printer display also registers tray contents, make that registration agree with what you physically loaded. Cancel the old failed job before sending a corrected one.

Clean rollers only when the model instructions permit it

Pickup rollers can accumulate dust and paper fibres, but their access and cleaning methods differ. Use the manufacturer’s instructions for your model, including powering down before reaching inside, the approved cloth or liquid and the required drying time. Do not spray cleaner into the printer or scrape rubber rollers with sharp tools.

If you cannot safely reach a user-serviceable roller, stop. A generic guide is not a reason to remove casing or touch a laser printer’s hot internal parts. Cleaning is also not a cure for a damaged feed component.

When to request service

If a clean supported stack will not feed after the documented checks, or if you hear grinding, contact support with the exact error and test results. Mention whether local reports feed and which tray is affected. Avoid repeatedly forcing paper into a printer that is not picking it up.

Confirm the fix

Print a one-page report and then a short multi-page document. Restore special media only after the plain-paper baseline works, using the correct tray and settings.

Related troubleshooting

• Printer Says Paper Jam but No Paper Is Visible: Inspect the Right Path

Official references

• HP OfficeJet 8010/8020/8030: paper feed
• HP Smart Tank: pickup issues

Reviewed against the linked documentation on October 7, 2026. Menu names and supported features vary by model and software version. This guide is independent; it does not claim hands-on testing of every printer.

Quick answer: Use the exact model’s jam instructions to check its paper path and accessible covers. A small torn fragment can be easy to miss. Never force the carriage, use sharp tools or reach into a powered mechanism.

Record the message before opening covers

Write down the full error code and the tray or cover named on the display. A main-tray jam, duplex-path jam and document-feeder jam use different access points. Search the manufacturer’s support page for the exact model and code; do not treat a similar printer’s diagram as your own.

Make the printer safe to inspect

Cancel the job. Before reaching inside, follow the manual’s shutdown and power-disconnection instructions. Laser-printer internal parts can be hot; allow cooling as specified. On some fax-capable models, disconnecting power can erase stored faxes, so review that warning first.

Check the accessible paper path

1. Remove loose sheets from the named tray and look for a skewed or partly fed sheet.
2. Open only the user-accessible cover identified by the manual. Check the rear or duplex area if the instructions include it.
3. Use good lighting to look for torn corners or scraps. Inspect without inserting metal tools or fingers into moving parts.
4. Remove accessible paper slowly using the method and direction specified by the manufacturer. Stop if it resists or requires disassembly.
5. Close the covers and reinsert the tray fully before restarting.

If you recover a torn sheet, compare its edges to identify a missing piece. Do not assume the path is clear solely because the large portion came out. Equally, do not keep pulling parts apart when nothing is accessible.

Choose the next step from the pattern

Reload a clean test stack

Use a small stack of flat, supported paper without staples, folds or damaged edges. Set the guides to touch the stack without bending it, keep below the fill mark and select matching paper settings. Send one one-sided page before testing duplex or a large job.

When not to keep trying

Stop if you hear grinding, find a damaged part, see a recurring code after the documented checks or cannot safely access an obstruction. A persistent “jam” message can require service; it is not an invitation to bypass a sensor or operate the printer with covers held open.

What to tell support

Provide the code, model, named paper path, whether a sheet was torn and whether the error appears at startup or while feeding. Photos of the accessible area can help, but omit private documents from them. This makes the repair request more precise than reporting an invisible jam.

Related troubleshooting

• Printer works on your phone but not your computer

Official references

• Canon GX7000 example: error 1300
• HP Smart Tank example: paper jams

Reviewed against the linked documentation on October 7, 2026. Menu names and supported features vary by model and software version. This guide is independent; it does not claim hands-on testing of every printer.

Quick answer: Print a nozzle or quality report from the printer itself. If black is missing there too, check the black supply and follow the exact model’s maintenance sequence; if the report is normal, investigate the document settings.

Limit the problem before buying a cartridge

Black text missing from one document does not prove that the black cartridge has failed. Colour printing also does not prove that every black ink path works. Use a printer-generated diagnostic report and a new plain-paper document with large black text as separate tests.

Compare the black portion of the report

Some printers have more than one black ink type or change ink use with paper settings. Follow the labels and sample pattern in your own manual. Do not assume that a photograph’s dark areas prove the document-black channel is functioning.

Check the supply without dismantling the printer

1. Read any supply warning on the display or official utility.
2. Confirm that the cartridge or tank configuration matches the exact model.
3. If a cartridge was just installed, review the official fitting steps and specified protective-seal removal.
4. Do not open sealed parts or touch the nozzles and contacts to see whether ink comes out.

An estimated ink level is only part of the evidence. Keep the cartridge number, installation date and report sample. On a tank printer, use the manufacturer’s filling and setup instructions; a generic cartridge procedure may not apply.

Follow one documented maintenance sequence

Use the normal printhead-cleaning option recommended for the model, then compare a new nozzle pattern. Move to deeper maintenance only when the manual instructs it, including any required waiting period. Never borrow the complete sequence from a different model merely because both use ink tanks.

For example, Canon’s G2000 documentation uses a nozzle check to identify missing output. HP’s Smart Tank 500 guidance also distinguishes printer-side print-quality tasks from document settings. Those examples support a diagnostic approach; their button sequences are not interchangeable.

If the internal black report is normal

Use ordinary plain-paper settings and print your short black-text test from another app. Inspect the original document for white font, hidden text, unusual layers or an incorrect page range. Compare the print preview with the output. Preserve the original file when making a fresh export.

Know when maintenance has reached its limit

If black remains absent after the permitted steps, ask the manufacturer whether the affected supply or printhead needs service. Report the before-and-after patterns. Repeated cleaning without improvement is not evidence that one more cycle will work, and it consumes ink.

Confirm recovery with the internal pattern and a real text page before sending a long document.

Related troubleshooting

• Printer Prints Blank Pages: Test the Printer Before the Document
• White Lines or Streaks in Inkjet Prints: Read the Nozzle Test

Official references

• Canon G2000: missing ink output
• HP Smart Tank 500: missing black or colour

Reviewed against the linked documentation on October 7, 2026. Menu names and supported features vary by model and software version. This guide is independent; it does not claim hands-on testing of every printer.

Quick answer: Check paper type and quality first, then compare a nozzle-check pattern with a normal document. Clean only as your model’s manual directs; alignment and nozzle cleaning solve different symptoms.

Confirm this is an inkjet printing problem

This guide concerns inkjet output. Laser printers use a different maintenance process. If streaks appear only in scans or photocopies but a computer document is clean, investigate the scanner instead of the printhead. Keep a sample page so you can tell whether the next step genuinely changes the defect.

Match settings to the loaded paper

1. Check that the tray contains the paper you intended to use.
2. Match media type and page size in the print settings to that paper.
3. Test a normal or suitable higher quality level instead of draft.
4. Print a small sample rather than repeating an entire photograph or report.

A different paper setting is not a substitute for loading supported paper. Do not select glossy photo media to force heavier ink onto ordinary sheets. Review the model’s supported media and printable side for specialist papers.

Print the model’s nozzle-check pattern

Use the maintenance menu or official printer utility for your exact model. Compare the resulting pattern with the example in its manual. Missing segments, misaligned lines and surface smears should not be treated as the same fault.

Clean in a controlled sequence

If the nozzle pattern has missing output, follow the manual’s ordinary cleaning process and print another pattern to compare. Record whether the missing segments improve. Do not immediately repeat deep cleaning several times: the manufacturer may specify a waiting period, ink requirements or a different next step.

The built-in pattern provides a consistent reference. A high-resolution photo is a poor diagnostic baseline because differences in scaling, paper and quality can disguise the change you are trying to measure.

Why alignment may not solve missing ink

Alignment is intended for positioning errors, while nozzle maintenance addresses ink delivery. If the pattern has blank portions, changing alignment settings alone does not establish that those portions are restored. Use the actual before-and-after pattern to decide whether to continue.

Escalate with useful evidence

If the allowed maintenance sequence does not help, give support the model, ink levels or supply warnings, nozzle patterns and whether the problem began after a cartridge change or long idle period. Do not manually scrub nozzles, use unspecified chemicals or force the carriage. Generic instructions are not a substitute for the exact model’s service guidance.

Final check

Print one text page and one small colour sample with correct media settings. Keep your successful settings as a preset if the app supports it.

Related troubleshooting

• Printer Prints Blank Pages: Test the Printer Before the Document

Official references

• Canon G3010: print-quality settings
• Canon TS3100: nozzle-check and cleaning

Reviewed against the linked documentation on October 7, 2026. Menu names and supported features vary by model and software version. This guide is independent; it does not claim hands-on testing of every printer.

Quick answer: Print a built-in report first. A blank internal page points toward supplies or the print mechanism; a normal report with a blank document points toward the file, app or print settings.

Use two controlled tests

Do not replace cartridges solely because one Word or PDF page comes out empty. First produce a report from the printer’s control panel using the model manual. Then print a new one-page document with a large black word and a simple coloured shape. This separates a printer-generated page from a computer-generated one.

If the internal report is blank

Identify whether your device is inkjet or laser before following a cleaning guide. Check reported supply errors and the installation instructions for any recently changed cartridge. Remove only packaging or protective seals specified in those instructions. Do not peel off arbitrary labels or touch delicate contacts and imaging surfaces.

For an inkjet, use the model’s nozzle-check or quality-report routine. If it indicates missing output, follow that model’s maintenance sequence, including its limits and waiting periods. A laser printer has no ink nozzles to clean; use its toner and imaging guidance instead.

If the internal report prints normally

1. Open print preview. Confirm the selected page contains visible content and is not an intentional blank page.
2. Select a small page range and the correct physical printer.
3. Try the same short test from another application.
4. If only one PDF fails, save a fresh local copy or obtain a fresh export from the source, keeping the original intact.

In forms or layered documents, what appears on screen is not always included in the selected print output. Inspect the app’s options for comments, form fields or layers if relevant, rather than applying a printer-wide reset.

Blank pages after a cartridge change

Compare the exact cartridge number with the model’s supported supply list. A fitted cartridge is not necessarily compatible, and a displayed ink estimate does not prove that ink is reaching the page. Record the precise message and retain the packaging while checking installation.

When to stop

Stop if the device reports a printhead, imaging-unit or other service error, or if the manufacturer’s permitted maintenance sequence brings no improvement. Repeated deep cleaning uses supplies and is not a universal repair. Do not inject solvents or dismantle the print mechanism based on a generic internet guide.

Verify before printing a full document

Repeat the internal page and short document. Keep the two outputs for comparison if the fault returns. Support can use the model, supply numbers, recent change and test results to choose a targeted next step.

Related troubleshooting

• Printer works on your phone but not your computer

Official references

• HP: blank-page troubleshooting
• Canon G1000 example: no ink output

Reviewed against the linked documentation on October 7, 2026. Menu names and supported features vary by model and software version. This guide is independent; it does not claim hands-on testing of every printer.

Quick answer: Check Android’s Printing settings and enable a compatible print service. Then test from an app with a Print command on the same permitted network as the printer.

First identify which connection you expect

For ordinary local Wi-Fi printing, the phone and printer need a usable network path. A phone using mobile data is not automatically connected to a home printer. Manufacturer cloud-print features are a separate setup. A DIRECT-prefixed Wi-Fi network is also a different path from your normal router.

Find Android’s print service

1. Open the phone’s Settings and search for Printing. On many Pixel devices the path is Connected devices → Connection preferences → Printing. Other phone brands use different labels.
2. Select an available print service and check that it is enabled.
3. If your model requires a manufacturer service or app, obtain the official one through the phone’s app store and check its supported models.
4. Return to your document app and open its Print command. Select the printer explicitly.

Google Cloud Print is retired. Instructions that tell you to register the printer in Cloud Print are not a current solution. Do not install an old APK from a download site to restore it.

Use a document that proves the basics

Choose a short, non-sensitive PDF or document in an app that actually offers printing. Some apps do not. A missing Print menu in one app is different from Android failing to discover a printer. Test a second suitable app before changing the printer setup.

Check the network without weakening it

Read the printer’s network name and compare it with the phone’s Wi-Fi selection. Use the normal authorized network instead of a guest connection that separates devices. If the model uses Wi-Fi Direct, follow its documented direct-printing procedure. Do not change router security just because the printer is absent from the list.

If the printer is listed twice

One entry may come from a manufacturer service and another from the default service, or from different connection methods. Send a single harmless test and note which entry works. Avoid sending the same job to every entry at once, which can produce duplicates.

Confirm the repair

Print one page, close the dialog and send another page. If only the manufacturer app succeeds, check whether the system print service supports your model and the desired format. Supply support with the phone model, Android version, printer model and exact service name. Avoid clearing all app data before recording the settings you may need to restore.

Related troubleshooting

• Printer offline after a router change
• No AirPrint printers found

Official references

• Google: print from your device
• Google: migration from Cloud Print

Reviewed against the linked documentation on October 7, 2026. Menu names and supported features vary by model and software version. This guide is independent; it does not claim hands-on testing of every printer.

Quick answer: Use the printer’s current address and a protocol supported by that exact model. Adding by IP can help when automatic discovery fails, but it cannot bypass a network that blocks access to the printer.

When this method is worth trying

Consider an IP entry when the printer is connected and reachable but absent from the Mac’s automatic printer list. First try the ordinary Add Printer list. If the printer is not connected to the network at all, entering an address will not make it connect.

Gather the connection details

• Current IP address or hostname from the printer’s network report or administrator. Do not reuse an address from an old setup without checking it.
• Exact model number and supported printing protocol.
• A queue name if a print server or administrator requires one.
• Any model-specific software needed for colour, duplex or secure-print features.

An address such as 192.168.20.11 is only an example, not a value to copy. Do not post your configuration report publicly; give relevant details directly to your trusted support contact.

Add the entry in macOS

1. Open System Settings → Printers & Scanners.
2. Choose Add Printer, Scanner or Fax, then the IP tab or IP option.
3. Enter the current address or hostname.
4. Select the protocol your printer or administrator specifies. Supported possibilities include AirPrint, IPP, LPD and HP Jetdirect – Socket.
5. Enter a required queue name exactly. Do not invent one if the setup instructions leave it blank.
6. Choose an identifiable name and the appropriate software in Use, then add the printer.

Do not choose protocols at random until something seems to respond. A basic generic connection may lack functions that the manufacturer’s driver provides. For a managed workplace device, security and authentication requirements may make a direct-IP setup inappropriate.

Test basic output and required features

If it fails immediately

Recheck the address on the printer’s current report, not on a historical screenshot. Confirm that the Mac and printer are on a network that permits communication. A guest network or managed segmentation can prevent access; ask the administrator for the right connection rather than disabling network protections.

If it works today and breaks later

The router may assign a different address later. Ask the router administrator whether a DHCP reservation or suitable hostname is the right long-term approach. Do not assign an arbitrary static address that could conflict with another device. Record the working protocol and software before making another change.

Keep the old entry until the new one is proven

Give the new queue a clear temporary name, test it and then decide whether the old one is obsolete. This makes it easier to compare outcomes without losing a setup you may need to restore.

Related troubleshooting

• Printer offline after a router change
• No AirPrint printers found

Official references

• Apple: add and manage printers
• Apple: printer settings

Reviewed against the linked documentation on October 7, 2026. Menu names and supported features vary by model and software version. This guide is independent; it does not claim hands-on testing of every printer.