There is a moment on every large run when the press is set up, the paper is loaded, and somebody has to say yes. After that, 50,000 copies exist. A press check is the last point at which a mistake costs a couple of hours instead of the whole job.
Plenty of buyers never attend one, and for a lot of work that is fine. Knowing when it is worth the trip, and what to actually look at when you get there, is what turns it from a ritual into a control.
When a press check earns its place
Attend when one or more of these applies:
- The quantity is large enough that a reprint is not viable. This is the main test.
- Colour is the product. Product photography, brand colour on packaging, anything where the customer will compare it to something else.
- The stock is unusual and nobody is sure how the ink will behave on it.
- It is the first run of a job you will repeat. The approved sheet becomes the reference for every reprint after it.
- Something went wrong last time. Being there changes the conversation.
Skip it when the job is straightforward text on standard stock, when a contract proof has already been signed off and the tolerance is agreed, or when the value of the run is lower than the cost of the disruption. Press time is booked, and asking for a check on the day is not usually possible.
What to bring, and what to agree beforehand
Bring the approved proof, a printed sample of any previous version you are matching to, and the brand colour references as numbers. Bring the person who can actually say yes. A press check attended by someone who has to phone the office for a decision wastes press time, which is expensive.
Agree beforehand what you are approving. Colour only, or colour and content? If content is still being checked at press check stage, something has gone wrong earlier in the process. Our note on forecasting print quantities covers the decisions that should already be settled by this point.
Agree the tolerance too. A printer working to a measured target can tell you whether a sheet is in or out of specification. Without an agreed target, the discussion becomes two people looking at a sheet and disagreeing politely.
What to look at, in order
Press checks go wrong when the buyer starts with the thing they care about most and never gets to the rest. Work through it systematically.
Overall colour balance first. Stand back. Does the sheet look right as a whole, or does it have a cast? Grey balance and neutrals reveal a cast faster than any coloured area.
Then the critical elements. Brand colours, skin tones, product colour. Compare against your physical reference under the viewing light, not under the room lights.
Then detail. Registration on small text, sharpness, whether shadow detail has closed up or highlights have blown out.
Then defects. Hickeys, which are small spots caused by debris, streaking, banding, scumming, set off from the sheet beneath. Look at several sheets from different points in the pile, not just the one handed to you.
Then the physical sheet. Is the stock the one you specified? Is the sheet clean and undamaged? Does the ink feel dry enough to handle?
Understand what can and cannot be adjusted
On press you can adjust ink density, and that moves colour across the whole sheet or across ink zones. You cannot fix a colour in one image without affecting everything in that zone, and you cannot fix a problem that is in the file. Asking for the blue in one photograph to be warmer will change every blue on the sheet.
If the problem is in the file, the honest answer is to stop, correct the file, and remake the plates. That costs time and money and is sometimes the right call. Recognising the difference between a press adjustment and a file problem is the most useful thing to understand before you attend.
Signing off properly
When you approve, sign and date the sheet. That sheet becomes the reference for the whole run, and for any reprint afterwards. Ask for a copy of it to take away, and keep it with the job record.
Write on it anything that is agreed but not visible: which areas were the priority, what was accepted as within tolerance, anything you have chosen to live with. Memory of a press check fades within a week.
If you are not attending, ask for a signed press sheet to be sent to you. It arrives after the run, which limits what you can do about it, but it still gives you a documented reference for the reprint.
The remote alternative
Not every large run justifies travel. Two workable substitutes:
A remote press check, where sheets are photographed or scanned and measured, and the readings are sent to you. This verifies against numbers rather than appearance, which for many jobs is more reliable than a person judging by eye anyway.
Approval against a contract proof, where you sign off a calibrated proof in advance and the printer is contracted to match it within an agreed tolerance. This shifts the responsibility to a measurable standard and removes the need to be there at all.
For repeat work, the second option is usually the right long term answer: attend the first run, establish the reference, then work to it thereafter. Our guide to setting up a recurring print schedule covers how that fits into an ongoing arrangement.
Running large jobs with us
We will tell you honestly whether your job warrants a press check or whether a contract proof and an agreed tolerance would serve you better, because the second option costs you less and works fine for most repeat work. Where a check is warranted, we schedule it rather than fitting it in, so you are not waiting hours for a press slot.
Approved sheets are signed, retained and referenced on reprints, which is what makes a second run match a first. See choosing print services for how we scope large jobs, our note on bulk print pricing tiers for the cost side, and contact us with quantity and specification for a quote.
Frequently asked questions
Does a press check cost extra?
Usually yes, because it holds press time while decisions are made. Ask for the cost upfront and weigh it against the value of the run rather than treating it as free.
How long does a press check take?
Typically one to two hours for a straightforward job, longer if adjustments are needed or if there are several sheets to approve. Arrive on time, because the press is waiting.
Can I ask for changes to the design at a press check?
No. By this point plates are made and the design is fixed. A press check adjusts colour, not content.
What if I am not happy with the sheet?
Say so clearly and specifically, referring to a physical reference rather than describing an impression. If the issue is in the file rather than on press, expect a conversation about remaking plates and who bears the cost.
