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Electrophotographic Copier with Selectively Actuatable Image Fixation

IP.com Disclosure Number: IPCOM000051593D
Original Publication Date: 1981-Feb-01
Included in the Prior Art Database: 2005-Feb-10
Document File: 2 page(s) / 59K

Publishing Venue

IBM

Related People

Breuling, WK: AUTHOR

Abstract

This electrophotographic copier is provided with means for selectively actuating the image fixation so that unfixed copies can be made for manually changing the developed electrostatic toner image. Such changes may be necessary, for example, if legends on drawings in one language are to be replaced by legends in another language. In such and similar cases, an unfixed copy of the original is made on drawing paper. Then the parts of the drawing to be replaced are removed from the unfixed toner image by means of adhesive plasticine, and the changed image is fixed afterwards.

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Electrophotographic Copier with Selectively Actuatable Image Fixation

This electrophotographic copier is provided with means for selectively actuating the image fixation so that unfixed copies can be made for manually changing the developed electrostatic toner image. Such changes may be necessary, for example, if legends on drawings in one language are to be replaced by legends in another language. In such and similar cases, an unfixed copy of the original is made on drawing paper. Then the parts of the drawing to be replaced are removed from the unfixed toner image by means of adhesive plasticine, and the changed image is fixed afterwards.

Fig. 1 is a schematic of an electrophotographic copier 10 with a rotating drum 11, the circumference of which is provided with a photoconductor layer 12. Photoconductor layer 12 is electrostatically charged by a corona station and exposed in an exposure station 15 in accordance with the original 16 to be copied.

The latent charge image is developed in a developer station 17 by adding toner powder. Toner image 30 thus obtained is transferred to a paper sheet 31 in a transfer station 19. Image transfer is effected by means of a corona station 41 on the backside of the paper. Paper sheet 31 with the transferred toner image 30 is fed by transfer means 40, 43, 44 through a fixing station 42, causing the image to be heat-fixed. Heat fixation is effected by an electrical heat source 45 which may take the form of a strong light or an infrared radiator. After the image has been transferred, photoconductor layer 12 is cleaned of toner res...