The torrential downpour in Leeds and its surroundings was likened to a monsoon.
Ry-Offset joint managing director Neil Handforth said: "There was so much water that our guttering was over-powered and rain was coming in through the ceilings."
A number of showroom presses were affected, and the firm is having the damage assessed by its insurers.
"We've had humidifiers placed all around the building to combat the water damage to machines, walls and carpets," said Handforth.
Komori in Leeds was also affected, but its factory escaped damage as floodwater was confined to offices.
Have your say in the Printweek Poll
Related stories
Latest comments
"Gosh! That’s a huge debt - especially HMRC! It’s a shock that HMRC allowed such an amount to be accumulated."
"Whatever happened to the good old fashioned cash job! At least the banks didn't take 2-3% of each sale. After 30 odd transactions that £100 quid you had has gone."
"It's amazing what can be found on the "web" nowadays!"
Up next...

Major incident was declared
Landmark former printworks destroyed in blaze

Discussions are continuing
CWU updates on USO reform

First industry job was at Xerox