Almost every printer argument comes back to cost, and almost every cost argument is confused because the technologies being compared do genuinely different things. A laser does not beat an inkjet — it does a specific job faster. A thermal printer is not a cheap laser, it is a completely different process. Understanding the mechanism for thirty seconds removes most of the confusion, so that is where this guide starts.
Inkjet: liquid sprayed onto paper
An inkjet head moves across the paper and ejects tiny droplets of liquid ink. The head either heats the ink until it bubbles (thermal, in older and cheaper models) or flexes a crystal to squeeze it out (piezo, in modern Epson models). Ink is delivered from small refillable tanks in current-generation machines, which is why running cost is so low.
- Strengths: lowest running cost, genuinely good colour, prints photo-grade output, handles a wide range of paper and card.
- Weaknesses: slow for large monochrome runs, and the print head is a wear item.
- The failure everyone meets: if the machine sits unused for weeks, ink dries in the nozzles and prints come out streaked. One full-page nozzle clean fixes it in most cases; a genuinely dried head may not be recoverable.
- Realistic cost: 12 to 20 paise per black-and-white page, 35 to 50 paise in colour.
Laser: powdered toner fused with heat
A laser or LED array charges a rotating drum, toner sticks to the charged areas, and a heated roller presses the paper against the drum to transfer and set the toner. Nothing liquid touches the paper. That single fact explains nearly every difference in behaviour between the two technologies.
- Strengths: fast on monochrome runs, no drying problem, text is crisp at small sizes, and a page is more resistant to water and handling.
- Weaknesses: higher cost per page, poor on photo-quality colour, and a much larger up-front price.
- The failure everyone meets: toner is hygroscopic, which means it absorbs moisture from the air. An opened cartridge stored for months produces pale, patchy output. This is the reason not to buy a second-hand laser cartridge "as a spare" and let it sit.
- Realistic cost: 70 to 95 paise per page in monochrome, 90 to 140 paise in colour.
Thermal: no ink at all
A thermal printer burns a dot onto special paper. The printing element heats a point on the paper, the coating changes colour, and that dot is the print. There is no cartridge, no drum and no head to clean, because there is no ink to dry.
- Strengths: by far the cheapest per page of any technology, silent, and almost no maintenance. Nothing to clean, nothing to dry out, nothing to replace except the roll.
- Weaknesses: the print fades over time, particularly in heat and sunlight. It is not archival. Paper is thicker, feels different, and is a consumable you must buy specifically.
- Best for: admit cards, event passes, bill books, delivery chits, library issues, counter receipts, and anything printed and handed over the same day.
- Realistic cost: 2 to 7 paise per page depending on roll width and how much of the roll is used.
A 58mm thermal printer costs more per page than nothing, but if you are printing admit cards and counter chits all day, it is the single cheapest useful machine on a photocopy counter. Most shops treat thermal as an afterthought when it should be the second machine they buy.
The comparison
| Inkjet (tank) | Laser | Thermal |
|---|
| How it prints | Liquid droplets | Powdered toner, fused | Heat burns a coating |
| B&W cost per page | 12–20 paise | 70–95 paise | 2–7 paise |
| Colour cost per page | 35–50 paise | 90–140 paise | Not possible |
| Speed on bulk mono | Slow | Fast | Fast for its size |
| Print quality | Excellent, photo-grade | Sharp text, weak photo | Fixed, low resolution |
| Running cost | Lowest | Highest | Lowest overall |
| Up-front cost | Low | High | Very low |
| Quiet? | No | No | Yes |
| Dries out if idle? | Yes — the main failure | No | No |
| Print fades? | No | No | Yes, over months |
| Needs special paper? | No | No | Yes |
| Card and thick stock | Good with the right model | Limited | Good |
Which one for which counter
- A counter doing exam papers, forms and general photocopying with some colour: an ink tank printer. This is the standard Indian counter and it is the right default.
- A counter printing thousands of identical black-and-white pages a month for a coaching institute or a district office: a mono laser, if the volume genuinely justifies the running cost. Below about 3,000 pages a month it rarely does.
- A counter doing passport photos, colour certificates and premium documents: keep an inkjet, and add a dedicated photo-capable machine only if you can name the weekly job.
- A counter printing admit cards, passes, bills or receipts: add a thermal printer regardless of what else you own. It costs almost nothing and it earns immediately.
- A counter that needs both speed and colour at volume: a colour laser, accepting that colour quality will be visibly below an inkjet.
When a fourth option makes sense
There is a category worth knowing about that sits between laser and nothing: LED printers. They are electrophotographic like a laser — same drum, same toner, same process — but they use an array of fixed LEDs instead of a scanning laser. The practical differences are that they have no warm-up time, they are physically more compact, and they are usually sold at a higher price for the same page economics. There is no cost advantage over a conventional laser. The advantage is speed on short bursts, which matters at a counter doing many small jobs.
The cost comparison that actually decides it
Per-page figures are easy to compare and easy to misuse. Here is the comparison that reflects a real counter month — 8,000 monochrome pages, 400 colour pages, and 500 thermal chits.
| Technology | Mono 8,000 pp | Colour 400 pp | Thermal 500 pp | Consumable total |
|---|
| Ink tank only | ₹1,280 | ₹200 | Not possible | ₹1,480 |
| Mono laser only | ₹6,400 | Not possible | Not possible | ₹6,400 |
| Ink tank + thermal | ₹1,280 | ₹200 | ₹35 | ₹1,515 |
| Colour laser only | ₹6,400 | ₹480 | Not possible | ₹6,880 |
The laser looks four times more expensive on consumables. Two things change the picture and neither is the page count: a laser needs a machine costing several times as much, and it is significantly faster on the 8,000 pages, which is counter time you get back. For a shop where that counter time is genuinely the constraint, the arithmetic can flip. For most counters it does not, and that is why the ink tank is the standard answer.
Common mistakes when matching technology to job
- Buying a laser for volume without checking the running cost. The up-front price is a third of the total cost over two years.
- Using thermal for anything a customer will keep for years. Fading is predictable and the customer will not blame you for it, but they will not come back.
- Leaving an inkjet idle for a month on the assumption it is fine. Print one test page before you promise anyone a deadline.
- Running heavy duplex on an entry-level inkjet not rated for it. The duplex unit is usually the first thing to fail, and it fails expensively.
- Buying a second machine to solve a queue problem. If colour jobs are blocking black-and-white jobs, that is a routing problem, not a hardware problem, and a second identical printer does not fix it.
Diagnosing which technology a problem belongs to
Most printing complaints are technology-specific, and recognising the pattern saves a wasted service visit. This is the diagnostic we would run first.
| Symptom | Most likely technology | Usual cause | Fix |
|---|
| Streaks or gaps in black text | Inkjet | Dried nozzles from sitting idle | Run a full nozzle clean; if it persists, the head is gone |
| Pale, patchy output overall | Laser | Toner absorbed moisture — often a second-hand cartridge | Replace with a sealed cartridge |
| Text looks fine, photos look muddy | Laser | Colour laser doing a job inkjet does better | Move colour jobs to an inkjet |
| Print fades to nothing over months | Thermal | Thermal paper in heat or sunlight | Expected. Reprint on a non-thermal stock for anything kept |
| Blank band across every page | Any | Dried ink, empty toner, or a failing drum | Check the consumable first — it is the cause most of the time |
| Both sides reversed or offset | Any | Duplex unit orientation setting or worn roller | Check orientation first; clean the roller second |
| Jams only on thick card | Any | Paper outside the machine's rated GSM | Check the manual for the supported card range |
| Sound but no print on thermal | Thermal | Paper loaded with the coated side away | Flip the roll. This is the most common thermal fault there is |
Where to go next
Once you know which technology fits, the next step is the model. Our printer buying guide shortlists the specific families worth considering for each job type, works out your real cost per page before you spend anything, and covers the maintenance schedule that keeps counter jams down. For the running-cost arithmetic in detail, our per-page cost guide does the full calculation including labour and overhead.