Although having a long life thanks to the quality of the inks used (ultra-chrome K3), the photos on canvas require some precautions for their maintenance. First of all, canvas prints are sensitive to water and abrasions.
1) Cleaning and moving the pictures
The best canvas prints are exclusively intended for hanging indoors.
Avoid placing the table in the sun not to reduce the lifetime of printing.
For cleaning, use a soft, dry and clean cloth (prints are sensitive to water and especially to abrasion).
The canvas is not laundry!
In the event of water splashing on the fabric: do not wipe and allow to dry (the prints resist moisture, but the water makes them all the more sensitive to friction).
Avoid touching the printed side with your fingers as this may result in stains or a slightly shiny appearance (due to wet hands, grease, etc.).
In case of moving/storage, make sure that the printed side is well protected with a soft textile or any other protection preventing abrasive contact on the fabric.
Always grasp the board by the sides, avoiding touching / pressing the printed side to avoid deforming/relaxing the canvas.
Do nothing on the canvas!
2) The tension of the canvas using the keys
When you receive your canvas, it is firmly stretched on its frame. Over time, it is possible that the fabric relaxes, mainly because of changes in humidity and temperature. It is then possible to tighten it using the keys located at the back of the board, at each corner of the frame.
We draw your attention to the fact that canvas prints are not subject to the same hazards as paintings on canvas (oil paintings in particular). Indeed, they undergo much greater constraints because of the nature of the coatings used and the different layers of paint/varnish that are affixed (the drying of this paint requires about one year, the chemical reactions then continuing without interruption for years). For its part, the printing on canvas does not undergo any constraint: the impression is limited to a thin layer of ink which is already dry at the time of the assembly of the canvas on the frame.
Thus, in theory, the use of keys should be very anecdotal for canvas prints and, in any case, should only take place after a few years.
To stretch the fabric with the help of the keys, it is enough to push these last ones delicately with the help of a hammer. We must not force and be satisfied with small hammer strokes, the tension to be increased very gradually:
Once pressed, the keys cannot be removed!
To retighten the fabric using the keys, we recommend placing the picture board, printed side down, on a flat support covered with a soft and slightly thick protection (a soft cover in acrylic for example), the aim being not to damage the square photo prints during the operation.
We insist on the softness of the protection: a rough cover could deteriorate the impression.
Then you just need to give a small hammer on each key by going very gradually so as not to risk pushing the key too deeply or, worse, tearing the canvas (which in a case like in the other would be irreversible).