Paper Jams, Consumables and the Physical Stuff

The last working day of the month, 10:20, at Tollgate Foods. The second-floor printer has jammed, which it does every month on this day, when the finance team prints customer statements. The ticket from Rosa in finance says only "It's doing it again." The desk knows this printer. It has been replaced twice. The replacement jams too, and the building has developed a theory about the floor. Hamid, the technician whose turn it is, walks up with the resigned expression of a man visiting a relative. He opens the side door, pulls out a concertina of statement paper, and clears it. It jams again on the eleventh sheet. Rosa, who has forty statements to post by noon, asks whether there is anything, anything at all, the desk can do about this printer.

There is, and it begins with noticing that it is not the printer. The physical layer of printing is everything that happens after the job reaches the device. It includes the paper, the rollers that pick it up, the path it travels, and the heat that fixes the toner. It also includes the toner itself, the drum, the trays, the doors, and the cupboard the paper was stored in. Faults here are mechanical and local, and they recur, because wear and damp and the wrong paper do not go away when the sheet is pulled out. This article is part of our Printer Support series. And it covers the layer that the triage flow names in its first test and then hands over.

It covers what a jam actually is and the jam that keeps coming back, with its five causes. Next come paper as a consumable, toner, drums and the stock cupboard, and who changes the toner. Then it covers the laminated card on the printer, the self-help article everyone can see, and when a jam is a ticket for the vendor. It finishes with a short war story and the on-printer card to copy.

What a Jam Actually Is

A printer moves one sheet at a time along a fixed path. A jam is the device noticing that a sheet is somewhere it should not be. That might mean two sheets where it expected one, or a sheet that arrived at a sensor late or not at all. It might mean a sheet that folded on a turn, or a sheet that is still inside from the last time. The device stops because carrying on would wrap the sheet around the hot roller that fixes the toner, which is a worse outcome than stopping. A jam, in other words, is the printer protecting itself, and it is nearly always right to.

Three things can be wrong when a sheet goes astray: the paper, the parts that move the paper, or the path itself. Paper that is damp, curled, too heavy, too light, or glossy on one side does not behave like the paper the device was designed around. Rollers that have worn smooth cannot grip, so they pick two sheets or none. And a path with a torn corner left in it from the last jam will catch a sheet that would otherwise have passed. So will a flap not quite closed, or a tray guide set for a size the paper is not. Almost every recurring jam is one of those three, and the whole of this article's method is to work out which before touching the device.

The one-off jam is not worth much thought. Any printer will jam occasionally on a slightly curled sheet or a sticky pair. The person clears it following the pictures on the screen, and life goes on. The census in the first article is how a desk tells a device that jams occasionally from one that jams every month on the same day. And the difference between the two is the difference between a shrug and a cause. The rest of this article is about the second kind.

The Jam That Keeps Coming Back

A recurring jam has a pattern, and the pattern names the cause. So the first job is to find the pattern rather than the sheet. Ask of the tickets, or of the person who clears it: does it jam from the same tray every time? On the same kind of paper? At the same time of day, week or month? In the same place inside the device? After the same event, a weekend, a ream change, a delivery? A device that jams only on Rosa's statements, from the main tray, on the last day of the month, is telling you about the statements. A device that jams on everything, from every tray, a little more each week, is telling you about its rollers. The table below gives the five causes with their pattern and their fix.

Worn rollers are the cause desks most often miss, because the device does not announce them and the jams arrive one at a time over months. Rollers are rubber; they pick up thousands of sheets a week by friction; friction wears them smooth; smooth rubber does not grip. A device past a certain page count will jam more and more until the rollers are replaced. Most devices keep that page count on the test page the triage flow asked you to record. Many devices sell the rollers as a maintenance kit and will, if asked, say when one is due. A desk that records the page count on every visit can see this coming. A desk that does not meets it as folklore.

The damp ream is the cause desks most often disbelieve. It was the cause at the goods-out printer at Meridian Parts in the first article. Paper was stored in a cupboard beside a loading-bay door, in a building where the door was open from six in the morning. It was loaded into a device whose rollers had been polished smooth by a year of feeding it. Paper absorbs water from the air. Damp sheets curl, swell at the edges, and stick to each other. A device that is asked to pick one sheet from a stack of them picks two. Pick up a fresh ream and a ream from the suspect cupboard and compare their weight and their feel. The difference is often obvious in the hand and invisible in a ticket.

Paper Is a Consumable Too

Desks treat toner as a consumable and paper as furniture, and paper causes more jams than toner ever will. Paper has a right side up, marked on the ream wrapper, which matters on some devices and not others. It has a weight, which the device's trays are rated for. It has a storage condition, which is dry and flat and at room temperature. And it has a shelf life once the wrapper is open, which is shorter than anyone wants in a damp building. An opened ream left on top of the printer over a weekend is a ream that has been drinking.

Three habits remove most paper jams without touching the device. Store paper in the room where it is used, off the floor, away from external doors and radiators, with the wrapper on until the day it is loaded. Fan the stack before loading, which separates sheets that have begun to stick. Load from the middle of the ream rather than the top, which is the sheet that has been exposed. And put special stock, letterhead, pre-printed forms, labels, card, through the tray the device's manual says it belongs in. That is usually the bypass tray at the side, with the tray's paper type set to match. Letterhead that has been through a printing press has a coating, a curl and a memory. It goes through a main tray built for plain paper the way a passport goes through a letterbox.

Labels deserve a sentence of their own. A sheet of labels that goes through the wrong path at the wrong heat sheds a label onto the hot roller. A label on the hot roller jams every sheet after it until an engineer removes it. The on-printer card at the end of this article says which tray takes labels. And the card is read by the person about to print labels. That one line on a card prevents a class of service visit that is otherwise mysterious. By the time the engineer arrives the label has been baked on for a week.

Toner, Drums and the Stock Cupboard

An "out of toner" ticket is a stock problem that has reached the desk, and the fix for stock problems is stock, not technicians. A par level, borrowed from the stockroom, is the minimum quantity of a consumable to have on the shelf at any time. The rule for a small printer fleet is one spare of every consumable each device uses. It is held near the device or in one central cupboard, reordered the day the spare is fitted. Two spares for the busiest devices and for anything with a long delivery time. The device will report "low" well before "empty", and "low" is the reorder signal, not "empty". A device that is allowed to reach empty before anyone orders has turned a shelf into a ticket.

Here is the arithmetic on a fictional desk, with every number invented and none a benchmark. Tollgate Foods had fourteen devices. The busiest six used a black cartridge roughly every six to eight weeks, the others every three to four months. And the four colour devices used their colour cartridges perhaps twice a year each since the queue defaults had made black the default. That was somewhere between sixty and eighty cartridge changes a year across the fleet, plus a handful of drums and waste containers. Each change took the desk about twenty minutes when the cartridge was on the shelf and well over an hour when it was not. That longer time went on finding one, ordering one, and the second ticket from the floor asking when it would arrive. The difference between a stocked cupboard and an empty one was, on that desk, somewhere around forty to sixty technician hours a year. The cartridges cost the same either way.

Keep the cupboard honest. Keep one shelf per device or per model, labelled with the queue name from the drivers article. That way, the shelf, the device and the queue all share a name. Keep a sheet on the inside of the door where whoever takes a cartridge writes the date and the device. The sheet is the reorder trigger and the record. And it is how the desk learns that one device is eating cartridges twice as fast as its twin. That is either a lot of printing or a fault, and the measuring article wants to know which. A toner cupboard without a sheet is a cupboard that is always surprisingly empty.

Who Changes the Toner

Three models work, and the desk should choose one on purpose rather than let it default to whoever is nearest. In the first, the desk does it: every consumable change is a ticket and a visit. That is simple, consistent, and the most expensive in technician hours. It is the right answer when the devices are few and close. In the second, a local champion on each floor does it. This is one named person who knows where the cupboard is and has watched it done once. They can also print the device's test page and read its screen for the desk when a ticket arrives. In the third, a managed-print supplier does it. The supplier delivers consumables automatically when the device reports low and sends an engineer for the rest. The fleet article describes this model, which removes the stock problem entirely in exchange for a contract.

The local champion model is the one most small desks land on, and it works when the champion is named, thanked and not alone. They are named because "whoever is nearest" is nobody. They are thanked because it is work they were not hired for. And they are not alone because the champion will be on leave on the day the toner runs out, so each floor has a second. Give them the card, the cupboard key and the sheet. Tell the desk's technicians to log the change when the champion mentions it. A toner change nobody logs is a consumable the census never sees. Changing toner is not a technical skill. Knowing that it happened is.

Whoever changes it, the empty goes back in the box the new one came in. It goes into the recycling route the maker or the supplier provides, not into the bin by the printer. A cupboard full of empty cartridges in no boxes is the usual result of not saying this, and it has a smell.

The Laminated Card on the Printer

The single cheapest reduction in printer tickets is a laminated card on the front of every device. And it works because it is read by the person standing at the printer at the moment they would otherwise raise the ticket. The card says what the device is called, which is the queue name from the drivers article, so the ticket can name it. It says where the paper is and which tray takes what. It says where the spare toner is and who changes it. It says that the screen shows how to clear a jam and that every door and tray should be checked for scraps afterwards. And it says how to raise a ticket, with the two facts the desk needs: the device name on this card, and the message on the screen. A card like that answers "where is the paper" before it is asked and turns "printer broken" into a ticket with a device and a message in it.

Keep it to one side of one card, in large type, with no humour and no jargon. The reader is a person with a lorry waiting or a client in reception. And the card is competing with the urge to pull the paper out backwards. Laminate it, because a paper card on a printer absorbs toner dust and coffee in a month. Fix it to the device itself rather than the wall behind it, because printers move and walls do not. The template at the end of this article is the card. Put your own names in it and print it on the device it describes, which is the one test of the device this series will recommend for fun.

The Self-Help Article Everyone Can See

The card's longer twin is an article in the knowledge base that anyone in the organisation can read. It has the same content and pictures of this device's actual doors and trays. Most jams are cleared by the person who found them, following the device's screen. The article exists for the minute after that, when the second sheet jams and the person wonders whether to keep pulling. It says: stop, check every door and tray for a scrap, close everything firmly, and try one plain sheet. If it jams again, raise a ticket with the device name and do not keep feeding it. It says where labels go and what damp paper looks like. And it says who the local champion is, so the person can ask a neighbour before asking the desk.

The article is public to the organisation on purpose. If you run QuerySolv, a knowledge base article can be visible to everyone rather than to agents only. That is the setting a jam article wants, because the reader is never a technician. In any tool, the test is whether the person at the device can reach the article from their phone while standing there, which is why the card carries the article's short address. Photographs beat words for this. A picture of this device's rear door with an arrow is worth a page of "locate the rear access panel". The case for pictures over steps, with how to take them cheaply, is in When a Picture Beats the Steps. Where the article sits so that people find it before they raise the ticket is the subject of Where the FAQ Goes. For printers, the answer is on the printer.

When a Jam Is a Ticket for the Vendor

Some physical faults are the engineer's. And the desk's job is to know which, to try the cheap things first, and to hand over a ticket the engineer can act on. Worn rollers on a device still under a service contract are usually the engineer's, as is anything involving the hot roller. So is the drum unit on devices where it is not a consumable, or a sensor that reports a jam when there is no sheet. So are a label baked onto a roller and any noise that was not there last month. Paper, trays, guides, scraps, doors and consumables are the desk's. An engineer called out to a damp ream will note it on the job sheet in a way the desk will not enjoy reading.

Before calling, do three things and write them in the ticket. Load a fresh ream of plain paper from a dry store and try ten sheets, so that paper is ruled out. Open every door and tray with a torch and look for scraps and labels. And print the test page for the page count and the error history, which most devices keep and which the engineer will ask for. Then raise the vendor ticket with the device's serial number, the location, the page count, and the exact message or code on the screen. Include when it started, the pattern, and what has been tried. Keep the desk's own ticket open with the vendor's reference in it until the engineer has been and the device has run a day without a jam. The shape of a handoff to a vendor that does not stall is in the escalation series' article on escalating to vendors and other teams. How to work a repair contract generally is in Working With Warranty and Repair Vendors. The printer version differs only in that the pattern and the paper matter more.

Count the visits. A device that has had three engineer visits in a year for the same fault is not being repaired. It is being maintained in a state of imminent failure at the cost of three mornings. And the question is no longer "what is wrong with it" but "should it stay", which the measuring article decides with a number. The desk is the only place that sees all the visits together. The engineer sees one at a time, and each one, individually, was reasonable.

A Short War Story: The Stockroom Ream at Northgate Retail

At Northgate Retail, the back-office printer in the flagship store jammed on delivery days, which were Tuesdays and Fridays. That was when the stockroom team printed the goods-received notes. Over one winter the desk logged nineteen jam tickets against it, and the store manager called the service contract out three times. Each visit cost about two hours of store staff time between letting the engineer in and standing beside him. The engineer replaced the rollers on the second visit and found nothing on the third. A technician called Jess was sent on the fourth jam because she happened to be in the store for something else. She picked up the paper the stockroom team used. It was kept on a shelf in the stockroom itself, beside the roller shutter to the yard. She noticed it was cold and heavy and that the sheets came off the stack in pairs. She moved two reams to the office and ran forty goods-received notes through without a jam. The printer did not jam again that winter. The cost had been nineteen tickets, three visits, and a set of rollers the device did not need. The cost also included a store team that had stopped reporting jams and started printing in the manager's office instead. The desk had not known about that. The lesson Jess wrote in the knowledge base article was one line: before you call the engineer, pick up the paper.

The On-Printer Card

The card below is one side of one laminated sheet, fixed to the front of the device it describes, in type large enough to read from standing height. Section A names the device in the words the ticket should use. B says where things are. C is what to do when it jams, in the order that prevents the second jam. D is the toner routine. E is how to raise the ticket with the two facts the desk needs. Fill one in per device, not per model, because the cupboard and the champion differ by floor. Nothing on it is a joke, because the reader has a lorry waiting.

THIS PRINTER — READ BEFORE YOU PULL ANYTHING
A. WHAT IT IS CALLED
   Choose it on your computer as:  ______________________________   (same name as this card)
   Location: ______________________        It prints:  mono / colour       It scans: yes / no

B. WHERE THINGS ARE
   Paper: ______________________   Keep the wrapper on until you load it. Load from a fresh ream, fanned.
   Main tray: plain paper only.   Letterhead, labels, card and envelopes: use the ______________ tray.
   Spare toner: ______________________   Spare drum / waste unit: ______________________

C. IF IT JAMS
   1. Read the screen. It shows which door to open and where the sheet is.
   2. Pull the sheet slowly in the direction the paper travels. Do not tear it.
   3. Open EVERY door and tray and look for a torn scrap. Remove it. Close everything firmly.
   4. Try one plain sheet.
   5. If it jams again, STOP. Do not keep feeding it. Raise a ticket (section E) and use ______________ meanwhile.
   Never print labels from the main tray. Never leave an opened ream on top of the printer.

D. TONER AND SUPPLIES
   "Low" means order now; it will still print. "Empty" means change it.
   Who changes it on this floor: ______________________  (second: ______________________)
   Write the date and this printer's name on the cupboard sheet when you take a cartridge.
   Put the empty in the new one's box and in the recycling route; not in the bin.

E. TO RAISE A TICKET
   Tell the desk two things: this printer's name (section A) and the exact message on the screen.
   Web form: ______________________   E-mail: ______________________   Phone: ______________
   Full guide with pictures: ______________________ (short address of the knowledge base article)

Hamid did not fix the second-floor printer at Tollgate Foods that morning. He fixed it the following week, after a conversation with Rosa about where the statement paper lived. It was a heavier, pre-printed stock with a coated finish, kept in a cupboard that the cleaners also used for the mop bucket. It was loaded into the main tray with the guides set for plain paper. It moved to a dry shelf in finance and went through the bypass tray with the paper type set. And the printer that had been replaced twice stopped jamming on the last day of the month. The theory about the floor was retired without ceremony. The card on the front of the device now says, in section B, where the statements go, and Rosa has never needed to read it.

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