UNITED STATES
SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549

SCHEDULE 13D/A
(Amendment No. 6)
Under the Securities Exchange Act of 1934

BlackRock Investment Quality Municipal Income Trust (RFA)

(Name of Issuer)

Auction Rate Municipal Preferred Shares

(Title of Class of Securities)

09247B208

(CUSIP Number)

George W. Karpus, President
Karpus Management, Inc.,
d/b/a Karpus Investment Management
183 Sully's Trail
Pittsford, New York 14534
(585) 586-4680

(Name, Address and Telephone Number of Person
Authorized to Receive Notices and Communications)

November 30, 2011

(Date of Event which Requires Filing of this Statement)

If the filing person has previously filed a statement on Schedule 13G
to report the acquisition that is the subject of this Schedule 13D,
and is filing this schedule because of §§ 240.13d-1(e), 240.13d-1(f) or
240.13d-1(g), check the following box. 


CUSIP No.: 09247B208

1. Names of Reporting Persons. I.R.S. Identification Nos. of above persons (entities only).

Karpus Management, Inc., d/b/a Karpus Investment Management
I.D. #16-1290558

2. Check the Appropriate Box if a Member of a Group (See Instructions)
(a) 
(b) X

3. SEC Use Only

4. Source of Funds (See Instructions)

AF

5. Check if Disclosure of Legal Proceedings Is Required Pursuant to Items 2(d) or 2(e)

N/A

6. Citizenship or Place of Organization

New York

Number of Shares Beneficially Owned by Each reporting Person With:

    7. Sole Voting Power

    59

    8. Shared Voting Power

    N/A

    9. Sole Dispositive Power

    59

    10. Shared Dispositive Power

    N/A


11. Aggregate Amount Beneficially Owned by Each Reporting Person

59

12. Check if the Aggregate Amount in Row (11) Excludes Certain Shares (See Instructions)

N/A

13. Percent of Class Represented by Amount in Row (11)

32.24%*

14. Type of Reporting Person (See Instructions)

IA

*Item 13, above, is calculated based on the aggregate amount of 183 outstanding auction rate preferred shares indicated by the Issuer's N-CSR filing, filed with the U.S. Securities and Exchange Commission on October 6, 2011, dated as of July 31, 2011.