UserAgent: Mozilla/5.0 (Windows NT 6.1; WOW64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/50.0.2661.102 Safari/537.36

Steps to reproduce the problem:
1. set print text's css attr font-family: "宋体";
2. set print text's css attr font-weight: bold; 
3. the font-weight not work

What is the expected behavior?
print the bolded text

What went wrong?
no idea

Did this work before? N/A 

Chrome version: 50.0.2661.102  Channel: n/a
OS Version: 6.1 (Windows 7, Windows Server 2008 R2)
Flash Version: Shockwave Flash 21.0 r0

fire-fox,IE is all right