Printing press and method

Details Printing press and method Printing press and method

G - Physics

03

G

314/17, 314/8

G03G 15/18 (2006.01) G03G 15/00 (2006.01) G03G 15/06 (2006.01) G03G 15/10 (2006.01) G03G 15/32 (2006.01) H04N 1/195 (2006.01) H04N 1/405 (2006.01)

Patent

CA 2031652

HCI 014 P2 Abstract of the Disclosure A press, and a process of printing a combination of fixed and variable data on such press, is disclosed wherein printed images being manufactured are created by direct digital driving of an imaging device at normal press speed, optionally followed by one or more processing operations in the case of business forms or the like, as required for a particular job. The content or arrangement of printed images can be changed without stopping the press. The press and process use one or more unique electrostatic printing engines (PE1, PE2) having direct digital imaging on a photoreceptor surface 51 of a drum 50 which can create latent electrostatic images at normal press speeds, and can accommodate substantial speed variations. An electronic imaging system is provided in which base image data and variable image data can be combined electronically to drive a single exposure system 70 in a printing engine. Repetitive latent images are formed and developed using a high resolution liquid toner, and the resultant visible image is transferred and fixed to a wide variety of materials, preferably in a continuous web W. The photoreceptor surface 51 is cleaned and thoroughly dried each revolution so as not to interfere with the next charging of the drum. With this imaging system and printing engine, makeready time between successive printing jobs can be significantly reduced. The press also has a fuser/dryer 23 in which the developer carrier liquid is vaporized from the drum and treated through a catalytic converter to control emissions from the press. Heat from catalytic treatment of the volatile carrier liquid is utilized as a heat source for air used in fuser/dryer 23, thus providing a recuperative system.

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