What is a one-sentence summary of the following article?
In a office setting, you may need to specify who the fax is for. If you don’t, the recipient may never receive their fax. To avoid this, the first page of your fax should include:  The name of the recipient The number of pages in the fax Your name Your contact information. Dark or shaded areas can cause delays or errors when faxing. Make sure that there are no complicated graphics like a photograph on the fax. On graphs, scanned receipts, or other images, make the background white, not gray or black. If there’s a problem with the recipient’s fax machine outside of hours, they may not notice and your fax may be missed. To reduce the chances of a problem, send the fax during your recipient’s business hours.  Generally, German offices work from 9:00 am to 6:00 pm, although this can vary based on the company. German banks generally are open from 8:30 am to 1:30 pm and 2:30 pm to 4:00 pm. The German time zone is Central European Time (UTC +1). Ask them to confirm when they have received the fax. If they have not gotten it, you may need to send it again.

Summary:
Attach a cover page to make sure the fax gets to the right person. Avoid sending fancy graphics and dark or gray patches. Send faxes during normal business hours. Call or email to check that the fax arrived.