Shares of Courier Corp., a Chelmsford book manufacturer and specialty publisher, rose after it announced results for its first quarter of fiscal year 2012. Revenue was $62.9 million, up 3 percent from last year’s first-quarter sales of $61.2 million. Net income was $1.5 million or 12 cents per share, compared to $1.7 million or 14 cents, over the year-ago period. Sales gains were concentrated in Courier’s book manufacturing segment, reflecting the effects of multiyear deals with key customers in the education and religious markets. Courier’s board also declared a dividend of 21 cents per common share.