Exhibit 99.1

   HERCULES PARTICIPATES IN A $3 MILLION EQUITY FINANCING TO AFFINITY EXPRESS

    PALO ALTO, Calif., Sept. 26 /PRNewswire-FirstCall/ -- Hercules Technology
Growth Capital, Inc. (Nasdaq: HTGC), a leading debt and equity growth capital
provider to technology related companies, entered into an agreement on Sept.
21, 2005 to provide $250,000 of equity financing to Affinity Express, a leader
in outsourced document creation services and the world's largest provider of
artwork and embroidery digitizing.  Ticonderoga Capital and Flagship Ventures
joined Hercules in this round of equity financing.

    "We are proud to be working with Affinity Express, a pioneer in the
large-scale outsourcing of document creations services," said Roy Liu, managing
director of Hercules. "This latest round of financing brings our total
investment in Affinity Express to $1.95 million. The additional capital will
provide the company with increased flexibility to grow its business, while
continuing to provide its customers with a more efficient and effective way to
outsource their document creation needs."

    Affinity Express provides more than 2,000 clients worldwide with
output-ready digital files for all types of printing, computer-generated
communications, stitched apparel and product imprinting. Retail and quick
printers, commercial printers, apparel and promotional products
suppliers/distributors, advertising agencies and corporations rely on Affinity
Express for customized digital graphics solutions that help them generate higher
profits, increase productivity and enhance competitive differentiation, without
the ongoing costs of equipment, labor or technology.

    About Hercules Technology Growth Capital:

    Founded in December 2003, Hercules Technology Growth Capital, Inc. is a
NASDAQ traded specialized finance company providing debt and equity growth
capital to technology-related companies at all stages of development. The
company primarily finances privately-held companies backed by leading venture
capital and private equity firms and also may finance certain publicly-traded
companies. Hercules focuses its investments in companies active in technology
and technology-related industries such as computer software and hardware,
networking systems, semiconductors, semiconductor capital equipment, information
technology infrastructure, Internet consumer and business services,
telecommunications, and life sciences. The company's investments are originated
through its principal office located in Silicon Valley, as well as additional
offices in the Boston, Boulder and Chicago areas. Providing capital to
privately-held companies backed by leading venture capital and private equity
firms involves a certain degree of credit risk and may result in potential
losses.

    For more information, please visit http://www.herculestech.com . Companies
interested in learning more about financing opportunities should contact
info@herculestech.com or call 650-289-3060.

    About Affinity Express:

    Affinity Express has produced competitively priced, high quality logo
products -- both apparel and hard goods -- for almost 80 years. As a global
leader in their industry, Affinity Express combines their world-leading screen
art/embroidery digitizing operations and high-speed production facilities to
serve their business-to-business clients. For more information please visit
www.affinityexpress.com.

SOURCE  Hercules Technology Growth Capital, Inc.
    -0-                             09/26/2005
    /CONTACT:  Deborah Stapleton, +1-650-470-0200, or info@herculestech.com,
for Hercules Technology Growth Capital, Inc., +1-650-289-3060/
    /Photo:     http://www.newscom.com/cgi-bin/prnh/20050609/SFTH149LOGO
                AP Archive:  http://photoarchive.ap.org
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    /Web site:  http://www.herculestech.com
                http://www.affinityexpress.com /