Document:

EXHIBIT 10.2
                                                                    ------------

                                  AMENDMENT TO
                    LOAN AGREEMENT AND RELATED LOAN DOCUMENTS

     THIS AMENDMENT dated as of this 19th day of October, 2001, to Loan
Agreement dated December 18, 1996, as amended to date, (as amended, the "Loan
Agreement") and to the Loan Documents (as defined in the Loan Agreement and as
amended to date), is by and among PRESSTEK, INC., a Delaware corporation with a
principal place of business at 8 Commercial Street, Hudson, New Hampshire 03051
(the "Borrower"), LASERTEL, INC., an Arizona corporation with a principal place
of business at 7775 North Casa Grande Highway, Tucson, Pima County, Arizona
85745 (the "Guarantor"), and CITIZENS BANK NEW HAMPSHIRE, a bank organized under
the laws of the State of New Hampshire with a place of business at 875 Elm
Street, Manchester, New Hampshire 03101 (the "Bank").

                                   WITNESSETH:
                                   ----------

     WHEREAS, the Bank has extended a certain revolving line of credit loan to
the Borrower in the principal amount of up to Sixteen Million Dollars
($16,000,000.00) (the "Revolving Line of Credit Loan"), a certain term loan to
the Borrower in the original principal amount of Six Million Nine Hundred
Thousand Dollars ($6,900,000.00) ("Term Loan"), and a second mortgage term loan
to the Borrower in the principal amount of Four Million Dollars ($4,000,000.00)
(the "Mortgage Loan"), and pursuant to the Loan Agreement and certain Loan
Documents; and

     WHEREAS, the Borrower has requested, and the Bank has agreed, to modify
certain provisions pertaining to the Borrower's financial covenants contained in
the Loan Agreement, all upon and subject to the terms and conditions of the Loan
Agreement and the Loan Documents, as the same are amended hereby. All
capitalized terms not otherwise defined herein shall have the meanings ascribed
to them in the Loan Agreement and/or the Loan Documents, as the case may be.

     NOW, THEREFORE, in consideration of the premises contained herein, the
Borrower, the Guarantor, and the Bank hereby agree as follows:

     1. AMENDMENT OF LOAN AGREEMENT. Section VII. Q. entitled "Additional
Financial and Other Covenants" shall be and hereby is deleted in its entirety
and replaced with the following:

     "1. FUNDED DEBT RATIO. BORROWER SHALL HAVE, ON A CONSOLIDATED BASIS WITH
     GUARANTOR, A RATIO OF FUNDED DEBT (AS HEREINAFTER DEFINED) TO EBITDA (AS
     HEREINAFTER DEFINED) OF NOT GREATER THAN 2.5:1 AS OF EACH FISCAL QUARTER
     END. "FUNDED DEBT" SHALL MEAN ALL INDEBTEDNESS OF BORROWER FOR BORROWED
     MONEY EVIDENCED BY NOTES, BONDS, DEBENTURES, OR SIMILAR EVIDENCES OF
     INDEBTEDNESS AND WHICH BY ITS TERMS MATURES MORE THAN ONE (1) YEAR FROM, OR
     IS DIRECTLY OR INDIRECTLY RENEWABLE OR EXTENDIBLE AT BORROWER'S OPTION
     UNDER A REVOLVING CREDIT OR SIMILAR AGREEMENT OBLIGATING THE LENDER OR
     LENDERS TO EXTEND CREDIT OVER A PERIOD OF MORE THAN ONE YEAR
<PAGE>

     FROM THE DATE OF CREATION THEREOF, AND SPECIFICALLY INCLUDING CAPITAL LEASE
     OBLIGATIONS, CURRENT MATURITIES OF LONG-TERM DEBT, REVOLVING CREDIT AND
     SHORT-TERM DEBT EXTENDIBLE BEYOND ONE YEAR AT THE OPTION OF THE BORROWER,
     AND ALSO INCLUDING, THE OBLIGATIONS, ALL AS DETERMINED IN ACCORDANCE WITH
     GENERALLY ACCEPTED ACCOUNTING PRINCIPLES FROM BORROWER'S FINANCIAL
     STATEMENTS. "EBITDA" MEANS BORROWER'S EARNINGS FOR THE TWELVE-MONTH PERIOD
     PRIOR TO THE DATE OF DETERMINATION, BEFORE REDUCTION FOR INTEREST, TAXES,
     DEPRECIATION, AND AMORTIZATION EXPENSE, DURING THE PRIOR FOUR (4) FISCAL
     QUARTERS ENDING ON THE DATE OF DETERMINATION, ALL AS DETERMINED IN
     ACCORDANCE WITH GENERALLY ACCEPTED ACCOUNTING PRINCIPLES FROM BORROWER'S
     FINANCIAL STATEMENTS;

     2. BORROWER SHALL MAINTAIN, ON A CONSOLIDATED BASIS WITH GUARANTOR, CASH
     EQUIVALENTS (AS HEREINAFTER DEFINED) OF NOT LESS THAN $2,500,000.00 AT ALL
     TIMES. FOR PURPOSES HEREOF, "CASH EQUIVALENTS " SHALL MEAN THE AGGREGATE
     AMOUNT OF ALL CASH, BANK ACCOUNTS, CERTIFICATES OF DEPOSIT, AND MARKETABLE
     SECURITIES (I.E. EQUITY SECURITIES LISTED ON THE NEW YORK OR AMERICAN STOCK
     EXCHANGES OR QUOTED ON THE NATIONAL ASSOCIATION OF SECURITIES DEALERS
     AUTOMATED QUOTATION SYSTEM (NASDAQ), STATE OR MUNICIPAL BONDS, OR UNITED
     STATES TREASURY SECURITIES) AS AT THE FISCAL QUARTER ENDING ON THE DATE OF
     DETERMINATION, ALL AS DETERMINED IN ACCORDANCE WITH GENERALLY ACCEPTED
     ACCOUNTING PRINCIPALS FROM THE FINANCIAL STATEMENTS; AND

     3. BORROWER SHALL MAINTAIN, ON A CONSOLIDATED BASIS WITH GUARANTOR, A
     MINIMUM FIXED CHARGE COVERAGE OF 1.25:1 TO BE DETERMINED AS OF THE END OF
     EACH FISCAL QUARTER FOR THE PRIOR FOUR (4) FISCAL QUARTERS ENDING ON THE
     DATE OF DETERMINATION. "FIXED CHARGE COVERAGE" MEANS NET INCOME AFTER TAXES
     (EXCLUSIVE OF EXTRAORDINARY GAINS, GAINS ON ASSET SALES, AND OTHER SUCH
     INCOME), PLUS DEPRECIATION, AMORTIZATION, INTEREST EXPENSE, AND LEASE
     EXPENSE, LESS DIVIDENDS AND DISTRIBUTIONS, FOR SUCH FOUR (4) FISCAL QUARTER
     PERIOD, DIVIDED BY THE SUM OF INTEREST EXPENSE, CURRENT MATURITIES OF
     LONG-TERM DEBT, CURRENT MATURITIES OF CAPITAL LEASES, LEASE EXPENSES,
     PREFERRED STOCK DIVIDENDS, AND CAPITAL EXPENDITURES (PROVIDED THAT CAPITAL
     EXPENDITURES FOR THE QUARTERS ENDED 12/31/00, 3/31/01, 6/30/01 AND 9/30/01
     SHALL BE DEEMED TO BE $1,000,000 NOTWITHSTANDING THE ACTUAL AMOUNT OF SUCH
     EXPENDITURES) FOR SUCH FOUR (4) FISCAL QUARTERS, ALL AS DETERMINED IN
     ACCORDANCE WITH GENERALLY ACCEPTED ACCOUNTING PRINCIPLES FROM THE FINANCIAL
     STATEMENTS."

                                       2
<PAGE>

     2. AMENDMENT FEE. In consideration of the amendments by the Bank hereunder,
the Borrower shall pay the Bank a fee of $25,000.00 on the date hereof.

     3. AMENDMENT OF OTHER LOAN DOCUMENTS.

     Each of the other Loan Documents, whether or not specifically referenced
herein, shall be and hereby is amended to reflect the terms and conditions of
this amendment.

     4. REAFFIRMATION OF REPRESENTATIONS AND WARRANTIES.

     Borrower hereby confirms, reasserts, and restates all of the
representations and warranties under the Loan Agreement and the Loan Documents,
as amended hereby, as of the date hereof, including without limitation, the
representations and warranties set forth in Article VI of the Loan Agreement.

     5. REAFFIRMATION OF AFFIRMATIVE COVENANTS.

     Borrower hereby confirms, reasserts, and restates its Affirmative Covenants
as set forth in Article VII of the Loan Agreement and the Loan Documents, as
amended hereby, as of the date hereof.

     6. REAFFIRMATION OF NEGATIVE COVENANTS.

     Borrower hereby confirms, reasserts, and restates its Negative Covenants as
set forth in Article VIII of the Loan Agreement and the Loan Documents, as
amended hereby, as of the date hereof.

     7. FURTHER REPRESENTATION AND WARRANTIES.

     The Borrower represents and warrants to the Bank as follows:

     (a) The execution, delivery and performance of this Agreement and the
documents relating hereto (the "Amendment Documents") are within the power of
the Borrower and are not in contravention of any law, the Borrower's Articles of
Incorporation, By-laws or the terms of any other documents, agreements or
undertaking to which the Borrower is a party or by which the Borrower is bound.
No approval of any person, corporation, governmental body or other entity not
provided herewith is required as a prerequisite to the execution, delivery and
performance by Borrower of the Amendment Documents or any of the documents
submitted to the Bank in connection with the Amendment Documents to ensure the
validity or enforceability thereof.

     (b) All necessary corporate action has been taken by the Borrower to
authorize the execution, delivery and performance of the Amendment Documents
which, when executed on

                                       3
<PAGE>

behalf of the Borrower, will constitute the legally binding obligations of the
Borrower, enforceable in accordance with their respective terms.

     8. NO FURTHER EFFECT.

     Except as amended hereby, the terms and conditions of the Loan Agreement
and each of the Loan Documents as set forth therein shall remain unchanged and,
as hereby amended, are in full force and effect.

     IN WITNESS WHEREOF, the Borrower, the Guarantor and the Bank have executed
and delivered this Amendment to the Loan Agreement and Related Loan Documents
all as of the day and year first above written.

WITNESS:                                      BORROWER:
                                              PRESSTEK, INC.

/s/ Diane L. Bourque                          By: /s/ Robert W. Hallman
------------------------------------             -------------------------------
                                                 Robert W. Hallman
                                                 President and Chief Executive
                                                 Officer

                                              GUARANTOR:
                                              LASERTEL, INC.

/s/ Lise J. McStravock                        By: /s/ Diane L. Bourque
------------------------------------             -------------------------------
                                                 Name: Diane L. Bourque
                                                 Title: Secretary & Treasurer

                                              BANK:
                                              CITIZENS BANK NEW HAMPSHIRE

/s/ Patricia A. Bonner                        By: /s/ John Mercier
------------------------------------             -------------------------------
                                                 John Mercier, Vice President

                                       4EXHIBIT 10.3
                                                                    ------------

                              SETTLEMENT AGREEMENT

                  Agreement made and entered into this 13th day of July 2001, by
and between Heidelberger Druckmaschinen Aktiengesellschaft, a corporation
organized and existing under the laws of Germany, having an office and place of
business at Kurfuerstenanlaga 52-60, DE-69115 Heidelberg, Germany (hereinafter
referred to as "HEIDELBERG") and Presstek, Inc., a corporation organized and
existing under the laws of the State of Delaware, USA, having an office and
place of business at 55 Executive Drive, Hudson, New Hampshire 03051-3907,
(hereinafter referred to as "PRESSTEK").

                                    STATEMENT

                  PRESSTEK and HEIDELBERG are parties to an arbitration
proceeding being conducted pursuant to the auspices of the International Chamber
of Commerce, Court of Arbitration, [CONFIDENTIAL TREATMENT REQUESTED] /*/
(hereinafter "the Arbitration"). HEIDELBERG and PRESSTEK have now resolved by
agreement all claims and counterclaims presented in the Arbitration, except that
the parties' resolution of PRESSTEK's claims against HEIDELBERG based on U.S.
Patent No. B1 5,163,368 and U.S. Patent No. B1 5,174,205 and their counterparts
in other countries (the `368 and `205 Patents) are contingent on future events.

                  As to the `368 and `205 Patents, PRESSTEK is presently
involved in a patent infringement action in the U.S. District Court for the
District of Delaware, Civil Action No. 99 Civ. 525 (GMS) (the "Delaware Action")
with Creo Products, Inc. of Canada, HEIDELBERG's vendor for the imaging system
for the Heidelberg Speedmaster 74-DI press currently on sale (the "SM74-DI"),
the press which is the

                                      -1-

/*/ [CONFIDENTIAL TREATMENT REQUESTED] INDICATES MATERIAL THAT HAS BEEN OMITTED
AND FOR WHICH CONFIDENTIAL TREATMENT HAS BEEN REQUESTED. ALL SUCH OMITTED
MATERIAL HAS BEEN FILED WITH THE COMMISSION PURSUANT TO RULE 24B-2 PROMULGATED
UNDER THE SECURITIES AND EXCHANGE ACT OF 1934, AS AMENDED.

<PAGE>

subject of PRESSTEK's `368 and `205 Patent claims in the Arbitration. The
Delaware Action was tried from June 25 to June 30, 2001.

                  The parties are entering into this Settlement Agreement to set
forth the terms of their resolution of all issues in the Arbitration and all
other claims between them arising out of events that have occurred prior to the
date of the Settlement Agreement.

                  Now, therefore, in consideration of the mutual promises herein
contained, the parties agree as follows:

                  1. All claims and counterclaims in the Arbitration shall be
dismissed, with prejudice, each party to bear its own costs. Except and only to
the extent as provided in paragraph 2 below, the parties hereby release and
discharge one another from all such claims and counterclaims and shall exchange
general releases of all claims, other than payments due and warranty claims
arising out of PRESSTEK's sale of products to HEIDELBERG in the normal course of
business. The parties will consult with the Chairman of the Arbitral Tribunal to
obtain guidance as to the appropriate procedure to terminate the Arbitration and
will take such reasonable steps as recommended by the Chairman of the Arbitral
Tribunal.

                  2. As to PRESSTEK's claims against HEIDELBERG with respect to
infringement of the `368 and `205 Patents, the parties agree that resolution of
such claims will await resolution of the issues of validity and infringement in
the Delaware Action, including any appeal from the decision of the District
Court in the Delaware Action. Upon final decision of the issues of validity and
infringement in the Delaware Action, if one or more claims of the `368 and/or
`205 Patents are held valid and infringed

                                       -2-
<PAGE>

by the Heidelberg SM74-DI press, then HEIDELBERG shall [CONFIDENTIAL TREATMENT
REQUESTED] /*/ in full satisfaction of such claims. PRESSTEK's claims against
HEIDELBERG with respect to infringement of the `368 and `205 Patents shall be
released and discharged upon such payment or upon any dismissal of the claims
pursuant to a settlement or otherwise. [CONFIDENTIAL TREATMENT REQUESTED] /*/.
PRESSTEK agrees that, conditioned upon [CONFIDENTIAL TREATMENT REQUESTED] /*/
PRESSTEK will take no action to enjoin the manufacture, use, sale or offer for
sale of the SM74-DI press by HEIDELBERG, one of its distributors or its
customers.

                  3 The non-compete provisions of the Master Agreement between
the parties effective January 1, 1991 contained in Par. 9 of the Master
Agreement as amended in Par. 1(b) of Memorandum of Performance No. 3, dated
April 27, 1993, are hereby unconditionally terminated.

                                      -3-

/*/ [CONFIDENTIAL TREATMENT REQUESTED] INDICATES MATERIAL THAT HAS BEEN OMITTED
AND FOR WHICH CONFIDENTIAL TREATMENT HAS BEEN REQUESTED. ALL SUCH OMITTED
MATERIAL HAS BEEN FILED WITH THE COMMISSION PURSUANT TO RULE 24B-2 PROMULGATED
UNDER THE SECURITIES AND EXCHANGE ACT OF 1934, AS AMENDED.
<PAGE>

                  4. With respect to the dispute between the parties in the
Arbitration concerning ownership of certain patents filed by HEIDELBERG, the
parties agree as follows:

                           a. The term "Disputed Patents", as used in this
                  paragraph, shall refer to all patents and patent applications
                  identified in Exhibit A attached hereto, as well as any
                  patents or patent applications filed in other countries
                  corresponding (i.e., having the same priority) to those
                  patents and applications, including any divisions, re-issues,
                  or re-examinations thereof.

                           b. All patents and patent applications based on
                  HEIDELBERG Patent File No. [CONFIDENTIAL TREATMENT REQUESTED]
                  /*/ shall be assigned to PRESSTEK by HEIDELBERG by executing
                  an Assignment in the appropriate form.

                           c. With respect to Item 10 on Exhibit A, PRESSTEK
                  hereby grants to HEIDELBERG, and, with respect to Items 1
                  through 9 on Exhibit A, HEIDELBERG hereby grants to PRESSTEK,
                  a non-cancelable, non-exclusive, paid-up license, including
                  the right to grant sub-licenses to each party's vendors,
                  customers, and licensees for the life of all such Disputed
                  Patents.

                  5.       a. PRESSTEK hereby grants to HEIDELBERG a paid-up,
                  non-exclusive license under PRESSTEK's trade secrets and
                  know-how, heretofore communicated to HEIDELBERG, to make, use,
                  sell, lease,

                                       -4-

                  /*/ [CONFIDENTIAL TREATMENT REQUESTED] INDICATES MATERIAL THAT
                  HAS BEEN OMITTED AND FOR WHICH CONFIDENTIAL TREATMENT HAS BEEN
                  REQUESTED. ALL SUCH OMITTED MATERIAL HAS BEEN FILED WITH THE
                  COMMISSION PURSUANT TO RULE 24B-2 PROMULGATED UNDER THE
                  SECURITIES AND EXCHANGE ACT OF 1934, AS AMENDED.
<PAGE>

                   or otherwise dispose of the HEIDELBERG [CONFIDENTIAL
                   TREATMENT REQUESTED] /*/.

                           b. PRESSTEK hereby [CONFIDENTIAL TREATMENT REQUESTED]
                  /*/ HEIDELBERG or its customers based on their use of
                  HEIDELBERG printing press products, under [CONFIDENTIAL
                  TREATMENT REQUESTED] /*/.

                  6.       a. PRESSTEK and HEIDELBERG shall enter into a new
                  Confidentiality Agreement in the form attached hereto as
                  Exhibit B.

                           b. Except for HEIDELBERG's royalty obligations with
                  respect to the Quickmaster 46 DI product, the parties hereby
                  release and discharge one another from any and all claims
                  based on the use of confidential information, trade secrets,
                  and know-how exchanged between the parties under their
                  pre-existing Confidentiality and Non-Disclosure Agreements
                  prior to the date of this Settlement Agreement. All
                  confidential information exchanged subsequent to the date of
                  this Settlement Agreement shall hereafter be governed by the
                  terms and conditions of the attached Confidentiality
                  Agreement.

                  7.      The provisions of Paragraph 5b., c. and d. of the
                  Master Agreement between the parties effective January 1, 1991
                  relating to ownership and enforcement of intellectual
                  property, and any other agreements existing between the
                  parties that provide for the assignment of intellectual
                  property from HEIDELBERG to

                                       -5-

/*/ [CONFIDENTIAL TREATMENT REQUESTED] INDICATES MATERIAL THAT HAS BEEN OMITTED
AND FOR WHICH CONFIDENTIAL TREATMENT HAS BEEN REQUESTED. ALL SUCH OMITTED
MATERIAL HAS BEEN FILED WITH THE COMMISSION PURSUANT TO RULE 24B-2 PROMULGATED
UNDER THE SECURITIES AND EXCHANGE ACT OF 1934, AS AMENDED.
<PAGE>

                  PRESSTEK, and any rights thereunder, are hereby terminated as
                  of the date of this Settlement Agreement. Upon execution of
                  this Settlement Agreement, HEIDELBERG no longer will have any
                  obligation to assign any intellectual property to PRESSTEK,
                  except as provided in paragraph 4 herein.

                  8.       As to the dispute between the parties concerning the
                  DI trademark:

                           a. All trademark applications and trademark
                  registrations filed by or on behalf of HEIDELBERG or its
                  related companies for the DI trademark per se (i.e., DI
                  without other HEIDELBERG trademarks) shall be assigned to
                  PRESSTEK by filing appropriate documentation in each
                  respective country. HEIDELBERG shall not hereafter file any
                  trademark application for, or otherwise obtain trademark
                  registration for, the trademark DI per se (i.e., without other
                  Heidelberg trademarks), and if it does so, such applications
                  and/or registrations shall be assigned to PRESSTEK.

                           b. PRESSTEK shall grant a trademark license to
                  HEIDELBERG to use the DI trademark in connection with its
                  press and imaging products (excluding printing plates) by
                  executing, simultaneously with the execution of this
                  Settlement Agreement, a Trademark License Agreement in the
                  form attached hereto as Exhibit C. HEIDELBERG shall have the
                  right, as provided in such Trademark License Agreement, to use
                  the DI trademark in combination with other Heidelberg
                  trademarks (such as SPEEDMASTER-DI) and to own in its own name
                  trademark applications and registrations for such composite
                  trademarks.

                                       -6-
<PAGE>

                  9.       HEIDELBERG shall pay PRESSTEK U.S. $750,000, payable
on December 1, 2001.

                  10. PRESSTEK agrees that if HEIDELBERG uses technology covered
by PRESSTEK patents (other than plate technology) for use in other HEIDELBERG
direct imaging projects, PRESSTEK will not take legal action for infringement of
such patents until 90 days after it has given HEIDELBERG written notice of the
alleged infringement of such patents. PRESSTEK agrees that during such 90-day
period it shall enter into formal mediation procedures with HEIDELBERG in an
attempt to reach agreement on a license to HEIDELBERG for such patents which
PRESSTEK alleges are infringed. Such mediation shall be conducted in accordance
with the Commercial Mediation Rules of the American Arbitration Association and
shall occur in New York, New York in English. If agreement cannot be reached
based on mediation during such 90-day period, PRESSTEK shall be free, after such
90-day period, to take such action as it deems appropriate and shall have all
rights and remedies provided by law.

                  11. The license from PRESSTEK to HEIDELBERG with respect to
the Heidelberg Quickmaster 46 DI press shall be non-exclusive and royalties
pursuant to such license shall be at the rates provided below for imaging kits
delivered during the periods indicated below:

                        a. until April 30, 2002, including all Quickmaster
                           46DI kits currently on order - U.S. [CONFIDENTIAL
                           TREATMENT REQUESTED] /*/ per kit;

                        b. from May 1, 2002 - U.S. [CONFIDENTIAL TREATMENT
                           REQUESTED] /*/ per kit.

                                       -7-

/*/ [CONFIDENTIAL TREATMENT REQUESTED] INDICATES MATERIAL THAT HAS BEEN OMITTED
AND FOR WHICH CONFIDENTIAL TREATMENT HAS BEEN REQUESTED. ALL SUCH OMITTED
MATERIAL HAS BEEN FILED WITH THE COMMISSION PURSUANT TO RULE 24B-2 PROMULGATED
UNDER THE SECURITIES AND EXCHANGE ACT OF 1934, AS AMENDED.
<PAGE>

                  12. The parties shall jointly issue a press release concerning
the settlement of the Arbitration in a form agreed to between the parties.

                  13. This Settlement Agreement shall be executed in duplicate
originals by the parties and shall be first delivered by facsimile. The
execution of this Settlement Agreement by the parties and delivery thereof by
facsimile shall be valid and binding as of the Effective Date which will be
inserted in the preamble. Within 30 days after facsimile execution, the parties
shall deliver and exchange fully executed originals of the Settlement Agreement.

                  IN WITNESS WHEREOF, the parties have caused this Settlement
Agreement to be executed by their duly authorized representatives.

                                 Presstek, Inc.

                                 By:  /s/ Robert Hallman

                                 Title:  CEO

                                 Date:  7/25/01

                                 Heidelberger Druckmaschinen Aktiengesellschaft

                                 By:  /s/ Wirnt Galster

                                 Title:  General Counsel

                                 Date:  7/26/01

                                       -8-
<PAGE>

      1.   U.S. Patent No. [CONFIDENTIAL TREATMENT REQUESTED] /*/
           Japanese Patent Doc. No. [CONFIDENTIAL TREATMENT REQUESTED] /*/
           German Patent Doc. No. [CONFIDENTIAL TREATMENT REQUESTED] /*/
           Title:   [CONFIDENTIAL TREATMENT REQUESTED] /*/
           Inventor(s): [CONFIDENTIAL TREATMENT REQUESTED] /*/

      2.   U.S. Patent No. [CONFIDENTIAL TREATMENT REQUESTED] /*/
           Japanese Patent Doc. No. [CONFIDENTIAL TREATMENT REQUESTED] /*/
           German Patent Doc. No. [CONFIDENTIAL TREATMENT REQUESTED] /*/
           European Patent Doc. No. [CONFIDENTIAL TREATMENT REQUESTED] /*/
           Title:   [CONFIDENTIAL TREATMENT REQUESTED] /*/
           Named Inventor(s): [CONFIDENTIAL TREATMENT REQUESTED] /*/

      3.   U.S. Patent No. [CONFIDENTIAL TREATMENT REQUESTED] /*/
           Japanese Patent Doc. No. [CONFIDENTIAL TREATMENT REQUESTED] /*/
           German Patent Doc. No. [CONFIDENTIAL TREATMENT REQUESTED] /*/
           European Patent Doc. No. [CONFIDENTIAL TREATMENT REQUESTED] /*/
           Title:   [CONFIDENTIAL TREATMENT REQUESTED] /*/
           Named Inventor(s): [CONFIDENTIAL TREATMENT REQUESTED] /*/

      4.   U.S. Patent No. [CONFIDENTIAL TREATMENT REQUESTED] /*/
           Japanese Patent Doc. No. [CONFIDENTIAL TREATMENT REQUESTED] /*/
           German Patent Doc. No. [CONFIDENTIAL TREATMENT REQUESTED] /*/
           Great Britain Patent Doc. No. [CONFIDENTIAL TREATMENT REQUESTED] /*/
           Title:   [CONFIDENTIAL TREATMENT REQUESTED] /*/
           Named Inventor(s): [CONFIDENTIAL TREATMENT REQUESTED] /*/

                                    EXHIBIT A

/*/ [CONFIDENTIAL TREATMENT REQUESTED] INDICATES MATERIAL THAT HAS BEEN OMITTED
AND FOR WHICH CONFIDENTIAL TREATMENT HAS BEEN REQUESTED. ALL SUCH OMITTED
MATERIAL HAS BEEN FILED WITH THE COMMISSION PURSUANT TO RULE 24B-2 PROMULGATED
UNDER THE SECURITIES AND EXCHANGE ACT OF 1934, AS AMENDED.
<PAGE>

    5.   U.S. Patent No. [CONFIDENTIAL TREATMENT REQUESTED] /*/
         Japanese Patent Doc. No. [CONFIDENTIAL TREATMENT REQUESTED] /*/
         German Patent Doc. No. [CONFIDENTIAL TREATMENT REQUESTED] /*/
         Title:   [CONFIDENTIAL TREATMENT REQUESTED] /*/
         Named Inventor(s): [CONFIDENTIAL TREATMENT REQUESTED] /*/

    6.   U.S. Patent No. [CONFIDENTIAL TREATMENT REQUESTED] /*/
         German Patent Doc. No. [CONFIDENTIAL TREATMENT REQUESTED] /*/
         Title:   [CONFIDENTIAL TREATMENT REQUESTED] /*/
         Named Inventor(s): [CONFIDENTIAL TREATMENT REQUESTED] /*/

    7.   U.K. Patent Doc. No. [CONFIDENTIAL TREATMENT REQUESTED] /*/
         Japanese Patent Doc. No. [CONFIDENTIAL TREATMENT REQUESTED] /*/
         Title:   [CONFIDENTIAL TREATMENT REQUESTED] /*/
         Inventor(s): [CONFIDENTIAL TREATMENT REQUESTED] /*/

    8.   German Patent No. [CONFIDENTIAL TREATMENT REQUESTED] /*/
         Title: [CONFIDENTIAL TREATMENT REQUESTED] /*/
         Inventor(s): [CONFIDENTIAL TREATMENT REQUESTED] /*/

    9.   Patent Application identified as [CONFIDENTIAL TREATMENT REQUESTED] /*/
         Title:   [CONFIDENTIAL TREATMENT REQUESTED] /*/
         Inventor(s): [CONFIDENTIAL TREATMENT REQUESTED] /*/

    10.  Patent Application identified as [CONFIDENTIAL TREATMENT REQUESTED] /*/
         Title:   [CONFIDENTIAL TREATMENT REQUESTED] /*/
         Inventor(s): [CONFIDENTIAL TREATMENT REQUESTED] /*/

                                    EXHIBIT A
                                   (continued)

/*/ [CONFIDENTIAL TREATMENT REQUESTED] INDICATES MATERIAL THAT HAS BEEN OMITTED
AND FOR WHICH CONFIDENTIAL TREATMENT HAS BEEN REQUESTED. ALL SUCH OMITTED
MATERIAL HAS BEEN FILED WITH THE COMMISSION PURSUANT TO RULE 24B-2 PROMULGATED
UNDER THE SECURITIES AND EXCHANGE ACT OF 1934, AS AMENDED.
<PAGE>

                        MUTUAL CONFIDENTIALITY AGREEMENT

                  This agreement is made and entered into effective as of July
13, 2001, by and between Presstek, Inc., having an office and place of business
at 55 Executive Drive, Hudson, New Hampshire 03051-3907, USA (hereinafter
referred to as "Presstek"); and Heidelberger Druckmaschinen Aktiengesellschaft,
having an office and place of business at Kurfuerstenanlaga 52-60, DE-69115
Heidelberg, Germany (hereinafter "Heidelberg").

                  WHEREAS, Presstek and Heidelberg have disclosed to each other
and may need to disclose hereafter certain confidential and proprietary
information including trade secrets, know-how and other confidential technical
and business information;

                  NOW, THEREFORE, in consideration of the mutual promises herein
contained, the parties have agreed as follows:

                  1. Information communicated by one party (the "Disclosing
Party") to the other (the "Receiving Party") which the Disclosing Party
considers confidential shall, when communicated in documentary form or on
computer tape or disc, be marked as "Confidential." In the event information is
communicated orally or by transfer of non-documentary materials or by
observation during visits to the Disclosing Party's facilities, the confidential
nature of such information shall be confirmed to the Receiving Party in writing
within twenty days after such disclosure. "Confidential Information" shall mean
any and all information in any form with respect to the Disclosing Party's
technical or business matters which are designated by the Disclosing Party as
"confidential" in the manner set forth above.

                  2. The Receiving Party shall maintain all Confidential
Information of the Disclosing Party in strict confidence, shall not publish,
disseminate, disclose or otherwise make such Confidential Information available
to any third party without

                                    EXHIBIT B

<PAGE>

the prior written consent of the Disclosing party (and then only within the
limits of such prior written consent), and shall not use such Confidential
Information for any purpose other than in furtherance of business arrangement
between the parties. The Receiving Party agrees to limit the dissemination of,
and access to, the Confidential Information to employees of the Receiving Party
(together with its legal and technical advisors) who have a "need to know" such
information, provided that such employees or advisors shall have entered into
appropriate confidentiality relationships with the Receiving Party so as to
ensure that the Receiving Party has the legal right to implement the terms and
conditions of this Confidentiality Agreement.

                  3. Notwithstanding paragraph 2 of this Confidentiality
Agreement, the obligations of confidentiality and non-use on the part of the
Receiving Party shall not apply to information which:

                           (a) the Receiving Party can establish was publicly
                  known or was known to the Receiving Party at the time of
                  disclosure;

                           (b) becomes publicly known subsequent to the time of
                  disclosure, provided that such public knowledge is not the
                  fault of, or the result of an improper disclosure by, the
                  Receiving Party;

                           (c) is subsequently received by the Receiving Party
                  without a confidentiality obligation from a third party which
                  has the right to disclose such information without a
                  confidentiality obligation; or

                           (d) is required to be disclosed by applicable law,
                  regulation or legal process (whether by subpoena, civil
                  investigative demand, or other similar process), provided that
                  if the Receiving Party is so requested to disclose any of the
                  Confidential Information the Receiving Party will in the first
                  instance take all reasonable steps to prevent public
                  disclosure of such Confidential Information and will provide
                  the Disclosing Party with prompt notice of any such request of
                  which the Receiving Party has knowledge so that the Disclosing
                  Party may seek a protective order
<PAGE>

                  or other appropriate remedy, or may waive the Receiving
                  Party's compliance with the provisions of this Confidentiality
                  Agreement, as appropriate. Regardless of whether the
                  Disclosing Party waives compliance with the terms hereof for
                  the purpose of such disclosure, or whether a protective order
                  or other appropriate remedy is obtained, the Receiving Party
                  will furnish only that portion of the Confidential Information
                  which is required to be disclosed by such applicable law,
                  regulation or legal process.

                  4. At the request of the Disclosing Party at a time when such
Confidential Information is no longer needed in connection with the parties'
mutual business relations, all Confidential Information in any tangible form
received by the Receiving Party and all documents, notes, sketches, proto-types,
discs, tapes, records or other written materials prepared by the Receiving Party
containing or reflecting such Confidential Information or abstracts or summaries
thereof shall be promptly destroyed or returned to the Disclosing Party,
together with all copies thereof, except that one copy of any such materials may
be retained by outside counsel for the Receiving Party for archival purposes.

                  5. Nothing contained in this Confidentiality Agreement shall
be construed as requiring either party to disclose any specific information to
the other, nor as a grant by implication, estoppel or otherwise of any license
to make, have made, use or sell any product or as a license under any patent,
patent application, utility model, copyright, trade secret or any other
proprietary right.

                  6. This Confidentiality Agreement shall be in force from the
time it is signed by both parties for so long as the parties have a continuing
business relationship and for a period of [CONFIDENTIAL TREATMENT REQUESTED] /*/
years thereafter, but in no event less than [CONFIDENTIAL TREATMENT REQUESTED]
/*/ years from the date of this Confidentiality Agreement.

                  7. The parties acknowledge and agree that a breach of this
Confidentiality Agreement by either of them may cause irreparable damage to the
non-breaching party, that such damage would be difficult to measure, and

/*/ [CONFIDENTIAL TREATMENT REQUESTED] INDICATES MATERIAL THAT HAS BEEN OMITTED
AND FOR WHICH CONFIDENTIAL TREATMENT HAS BEEN REQUESTED. ALL SUCH OMITTED
MATERIAL HAS BEEN FILED WITH THE COMMISSION PURSUANT TO RULE 24B-2 PROMULGATED
UNDER THE SECURITIES AND EXCHANGE ACT OF 1934, AS AMENDED.
<PAGE>

that such damage may not be adequately compensated by monetary damages.
Consequently, the parties agree that each shall be entitled to equitable relief,
including injunction and specific performance, in the event of any breach of the
provisions of this Confidentiality Agreement, in addition to all remedies
available to the parties at law or in equity.

                  8. This Confidentiality Agreement contains the entire
agreement between the parties concerning disclosure and use of Confidential
Information and cannot be altered except by an agreement between the parties in
writing. This Confidential Agreement shall be interpreted in accordance with the
laws of the State of New York, and all parties to this Confidentiality Agreement
hereby subject themselves to the jurisdiction of the Courts of New York or the
Courts of the United States sitting in New York to enforce the provisions of
this Confidentiality Agreement.

                  IN WITNESS WHEREOF, the parties have caused this
Confidentiality Agreement to be executed by their duly authorized
representatives.

                     Presstek, Inc.

                     By: /s/ Robert Hallman
                        --------------------------------------------------------

                     Title: CEO
                           -----------------------------------------------------

                     Date: 7/25/01
                          ------------------------------------------------------

                     Heidelberger Druckmaschinen Aktiengesellschaft

                     By: /s/ Wirnt Galster
                        --------------------------------------------------------

                     Title: General Counsel
                           -----------------------------------------------------

                     Date: 7/26/01
                          ------------------------------------------------------

<PAGE>

                           TRADEMARK LICENSE AGREEMENT

         This Agreement, dated as of the 13th day of July 2001, by and between:
PRESSTEK, INC., a corporation organized and existing under the laws of the State
of Delaware, USA, located and doing business at 55 Executive Drive, Hudson, New
Hampshire 03051-3907 (hereinafter, "PRESSTEK"); and Heidelberger Druckmaschinen
Aktiengesellschaft, a corporation organized and existing under the laws of
Germany, located and doing business at Kurfuerstenanlaga 52-60, DE- 69115
Heidelberg, Germany (hereinafter, "HEIDELBERG").

         WHEREAS, PRESSTEK is the owner of the trademark "DI" and the good will
associated thereunder, including U.S. Trademark Registration No. 1,711,005 of
September 1, 1992 for the trademark DI as applied to printing inks, printing
presses and printing plates and applications and registrations in other
countries (hereinafter, the "DI Mark");

         WHEREAS, PRESSTEK and HEIDELBERG are parties to an arbitration
proceeding being conducted under the auspices of the International Chamber of
Commerce, Court of Arbitration, [CONFIDENTIAL TREATMENT REQUESTED] /*/ which
involves HEIDELBERG's use of the DI Mark among other issues (the "Arbitration");

         WHEREAS, the parties desire to settle the trademark-related controversy
between them, including the trademark claims involved in the Arbitration, and,
concurrent herewith, are executing a Settlement Agreement in the Arbitration;

                                    EXHIBIT C

/*/ [CONFIDENTIAL TREATMENT REQUESTED] INDICATES MATERIAL THAT HAS BEEN OMITTED
AND FOR WHICH CONFIDENTIAL TREATMENT HAS BEEN REQUESTED. ALL SUCH OMITTED
MATERIAL HAS BEEN FILED WITH THE COMMISSION PURSUANT TO RULE 24B-2 PROMULGATED
UNDER THE SECURITIES AND EXCHANGE ACT OF 1934, AS AMENDED.
<PAGE>

         NOW, THEREFORE, in consideration of the foregoing and of the mutual
promises hereinafter set forth and the exchange of other good and valuable
consideration in a Settlement Agreement between the parties concerning the
Arbitration, the receipt and sufficiency of which is hereby acknowledged, the
parties agree as follows:

                  1. GRANT OF LICENSE

                  PRESSTEK hereby grants to HEIDELBERG a [CONFIDENTIAL TREATMENT
REQUESTED] /*/ nonexclusive, nontransferable license to use the DI Mark in
connection with printing presses and imaging products (other than printing
plates) and in the advertising and promotion of such products and related
services.

                  2. HEIDELBERG COMPOSITE TRADEMARKS

                  HEIDELBERG shall have the right to use the DI Mark in
combination with HEIDELBERG trademarks (such as SpeedMaster DI and QuickMaster
DI) (the "Composite Trademarks") throughout [CONFIDENTIAL TREATMENT REQUESTED]
/*/ . HEIDELBERG shall have the right to own, in its own name, trademark
applications and registrations for the Composite Trademarks where permitted by
law. Except as expressly permitted in this Paragraph, HEIDELBERG will not apply
to register any mark containing the DI Mark and will not oppose any such
application[s] by PRESSTEK.

                  3. QUALITY

                  HEIDELBERG agrees that the nature and quality of the goods and
services which it provides or renders under the DI Mark and the Composite
Trademarks shall be of as high a quality as the goods and services which it has
sold prior to the date hereof. PRESSTEK acknowledges that it has evaluated the
nature and quality of

                                       -2-

/*/ [CONFIDENTIAL TREATMENT REQUESTED] INDICATES MATERIAL THAT HAS BEEN OMITTED
AND FOR WHICH CONFIDENTIAL TREATMENT HAS BEEN REQUESTED. ALL SUCH OMITTED
MATERIAL HAS BEEN FILED WITH THE COMMISSION PURSUANT TO RULE 24B-2 PROMULGATED
UNDER THE SECURITIES AND EXCHANGE ACT OF 1934, AS AMENDED.
<PAGE>

HEIDELBERG's products and services and related advertising and promotion, and
agrees that such quality is appropriate for goods and services sold under the DI
Mark and the Composite Trademarks. PRESSTEK agrees that HEIDELBERG's continued
use of the same or similar quality is in full compliance with the requirements
of this License Agreement. Further, HEIDELBERG shall comply with all applicable
laws and regulations and obtain all appropriate government approvals pertaining
to the offering, sale, distribution and advertising of goods and services under
the DI Mark and the Composite Trademarks.

                  4. TERM

                  Subject to Paragraph 5, this License shall continue in force
and effect [CONFIDENTIAL TREATMENT REQUESTED] /*/ .

                  5. TERMINATION FOR CAUSE

                  PRESSTEK shall have the right to terminate this Agreement in
the event of any affirmative act of insolvency by HEIDELBERG, or upon the
appointment of any receiver or trustee to take possession of the properties of
HEIDELBERG or upon the winding-up, sale, consolidation, merger or any
sequestration by governmental authority of HEIDELBERG, or in the event of a
material breach of HEIDELBERG's obligations under this Trademark License
Agreement.

                  6. FURTHER ASSURANCES

                  The parties agree to take any actions or execute any documents
reasonably requested by the other to fulfill the intentions of this Agreement.

                                       -3-

/*/ [CONFIDENTIAL TREATMENT REQUESTED] INDICATES MATERIAL THAT HAS BEEN OMITTED
AND FOR WHICH CONFIDENTIAL TREATMENT HAS BEEN REQUESTED. ALL SUCH OMITTED
MATERIAL HAS BEEN FILED WITH THE COMMISSION PURSUANT TO RULE 24B-2 PROMULGATED
UNDER THE SECURITIES AND EXCHANGE ACT OF 1934, AS AMENDED.

<PAGE>

         INTERPRETATION OF AGREEMENT

                  It is agreed that this license shall be interpreted according
to the laws of the State of New York and that it may not be modified except by a
writing signed by both parties.

                  IN WITNESS WHEREOF, the parties hereto have caused this
license to be executed as of the day and year first written above.

                                            Presstek, Inc.

                      By: /s/ Robert Hallman
                         -------------------------------------------------------

                      Title: CEO
                            ----------------------------------------------------

                      Date: 7/25/01
                           -----------------------------------------------------

                      Heidelberger Druckmaschinen Aktiengesellschaft

                      By: Wirnt Galster
                         -------------------------------------------------------

                      Title: General Counsel
                            ----------------------------------------------------

                      Date: 7/26/01
                           -----------------------------------------------------

                                       -4-

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