IMPACT SYSTEMS INC /CA/ SC 13D

SCHEDULE 13D

FORM OF OFFER TO PURCHASE

FORM OF LETTER OF TRANSMITTAL

FORM OF NOTICE OF GUARANTEED DELIVERY

FORM OF LETTER TO BROKERS, COMM. BANKS, TRUST CO.

FORM OF LETTER TO CLIENTS

GUIDELINES FOR CERTIFICATION OF TAXPAYER ID NUMBER

TEXT OF JOINT PRESS RELEASE

SUMMARY ADVERTISEMENT DATED DECEMBER 18, 1997

AGREEMENT AND PLAN OF MERGER

STOCKHOLDER AGREEMENT

STOCKHOLDER AGREEMENT

STOCK OPTION AGREEMENT

NONCOMPETITION AGREEMENT