Electrophotographic recording apparatus including a pivotably mo

Details Electrophotographic recording apparatus including a pivotably mo Electrophotographic recording apparatus including a pivotably mo

1991-03-01

1992-06-30

Grimley, A. T.

Photocopying

Contact printing

Light boxes

355274, G03G 1514

Patent

active

051267969

ABSTRACT:
A transfer unit has a plastic end block at each end. The end block includes a bearing for supporting an auxiliary roller, and an arm having at its end portion a pivot received by a lower casing. The bearing and the arm are formed integrally with the end block. A leaf spring located under the transfer unit supports it along with the roller in movable relationship around the pivot. When an upper casing is shut down, a photoreceptor drum supported in the upper casing pushes down the transfer unit against the elastic force of the leaf spring. Since the positions of the transfer unit and the roller are determined with respect to the photoreceptor drum, good duplicativity can be obtained. In this state, a cylindrical spacer serves to secure a predetermined space between the photoreceptor drum and the auxiliary roller.

REFERENCES:
patent: 4423951 (1984-01-01), Rightmyre
patent: 4466729 (1984-08-01), Iwata
patent: 4896191 (1990-01-01), Ohyabu et al.
patent: 5023667 (1991-06-01), Negoro et al.

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