To Users of the Wireless File Transmitter WFT-E7A
Thank you for using Canon products.
It has been confirmed that the exterior rubber part on some Wireless File Transmitter WFT-E7A unit may change color (turn white) after a short period of time. Customer support for this phenomenon is described in the Market Support segment.
We take pride in the quality and performance of our products, and we offer our most sincere apologies to customers using this product who have been inconvenienced by this issue.
The rubber on the top surface of some WFT-E7A units produced in certain lots between April 9 and July 13 may turn white after a short period of time. After inquiry with the rubber manufacturer and analysis, we have determined that the white substance is zinc bis (N,N'-dimethyldithiocarbamate).
Zinc bis is not used in the production of this product. However, the quantity of rubber accelerator used in the affected production lots was slightly higher than usual. As a result the rubber surface may turn white due to a chemical reaction with the rubber accelerator and other substances. High temperature and high humidity may contribute to this condition. Zinc bis (N,N'-dimethyldithiocarbamate), which becomes deposited on the rubber surface, is created as a result of this chemical reaction.
Only certain WFT-E7A wireless file transmitter units (overseas product name: WFT-E7 A / B / C / D / E) produced between April 9 and July 13, 2012 are affected.
If the first two digits of the serial number are "03" through "06" and the fifth digit is "1", the unit is affected.
03xx1xxxxx, 04xx1xxxxx, 05xx1xxxxx, 06xx1xxxxx
([x] represents any optional number.)
Please note that zinc bis (N,N'-dimethyldithiocarbamate) will not deposit on the surface of units not produced in the designated production lots.
The rubber part of the affected wireless file transmitters will be replaced free of charge at our service centre.
We anticipate that our free repair service will start in late October. Please contact your nearest service center on the availability date for servicing.
The amount of zinc bis detected during our testing was minimal. While Canon has not received any reports of injury or allergic reactions regarding this product, it is possible for zinc bis, in the small amount found in the rubber surface of affected units, to cause allergic reactions*, such as a rash, when it comes in contact with skin of sensitive persons. In addition, if eyes are rubbed after contact with the substance, symptoms such as red eyes may develop.
As a precautionary measure, thoroughly wash your hands with water if they have come in contact with the rubber surface that has turned white. If any medical symptoms develop, please consult your physician immediately.
*Please note that the occurrence of an allergic skin reaction on contact with this substance depends on length and type of contact with the substance, individual health and physical conditions, and individual skin sensitivity. Not everyone will be affected by allergic symptoms.