EXHIBIT 11.1

RIMAGE CORPORATION
COMPUTATION OF NET INCOME PER SHARE OF COMMON STOCK

Basic net income per common share is determined by dividing net income by the weighted average number of shares of common stock outstanding. Diluted net income per common share is determined by dividing net income by the weighted average number of shares of common stock and common share equivalents outstanding, unless the result is anti-dilutive. A total of 833 and 1,981 assumed conversion shares for the three months ended March 31, 2005 and 2004, respectively, were excluded from the net income per share computation, as their effect is anti-dilutive. The following is a summary of the weighted average common shares outstanding and assumed conversion shares:

Three months ended
March 31,

2005
2004
Shares outstanding at end of period      9,476,587    9,257,982  


 
  Weighted average shares of common stock outstanding    9,422,076    9,167,484  
 
  Weighted average shares of assumed conversion shares    670,019    752,595  


 
  Weighted average shares of common stock and assumed  
conversion shares    10,092,095    9,920,079  


 
Net income   $ 2,691,236   $ 1,831,649  


 
Basic net income per common share   $ 0.29   $ 0.20  


 
Diluted net income per common share   $ 0.27   $ 0.18  






20