Perfecting printer with turnover unit

Details Perfecting printer with turnover unit Perfecting printer with turnover unit

1988-01-12

1989-03-07

Crowder, Clifford D.

Typewriting machines

Sheet or web

For feeding sheet from stack or pack holder

400188, 400578, 271291, 271301, 101296, B41J 1300, B41J 354, B65H 2958

Patent

active

048101206

ABSTRACT:
A perfecting printer comprises a feeding roller for successively feeding cutforms accommodated in a feed stacker onto a transfer path provided with pairs of reversible transfer rollers. Each cutform is first transferred forward past a printing unit without printing. The cutform is then transferred rearward and printed on its front face. The one-face printed cutform is then guided into a return path which joins the transfer path at a position before the printing unit. Upon passage through the return path, the cutform is turned over and returned to the stacker by a turnover unit disposed above the stacker. Finally, the turned over cutform is transferred forward and printed on its rear face again by the same printing unit.

REFERENCES:
patent: 4714241 (1987-12-01), Randall
Cochran, et al., "Document Flipping with Reversing Nip Rolls", IBM Tech. Disc. Bul., vol. 23, No. 6, Nov. 1980, pp. 2214-2216.
Jenkins, "Sheet Flip Enhancer", IBM Tech. Disc. Bul., vol. 23, No. 7A, Dec. 1980, pp. 2635-2636.

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