US 5,797,077 AGranted

Double-sided images forming apparatus and method using the same

AssigneeFuji Xerox Co., Ltd.

InventorsKen Samizo, Kenichi Mishina, Mituo Yamamoto, Yutaka Yakabe, Toshikazu Kageyama, Yoshiya Mashimo

Life of this patent

Estimating the term…

Loading patent…

Abstract

A double-sided image forming method is disclosed which comprising; a first image primary transfer step (A) for transferring a first image (T1) carried by a first image carrier (1) to a first intermediate transfer member (2); a second image primary transfer step (B) for transferring a second image (T2) carried by a second image carrier (3) to a second intermediate transfer member (4); and a secondary image transfer step (C) for secondarily transferring the primarily transferred images (T1) and (T2) from the respective intermediate transfer members (2) and (4) to both sides of recording material (5), in the area where the first intermediate transfer material (2) and the second intermediate transfer material (4) come into contact with or in proximity to each other.

Claims23

Dependent claims

A double-sided image forming method comprising:

a first image primary transfer step for transferring a first image carried by a first image carrier to a first intermediate transfer member;
a second image primary transfer step for transferring a second image carried by a second image carrier to a second intermediate transfer member;
a first image secondary transfer step for retaining the recording material in a sucked way so as to correspond to the second image formed on the second intermediate transfer material and for secondarily transferring the first transfer image from the first intermediate transfer member to the side of the recording material facing the first intermediate transfer member, in the area where the first intermediate transfer material and the second intermediate transfer material come into contact with or in proximity to each other;
and
a second image secondary transfer step for secondarily transferring the primarily transferred image from the second intermediate transfer member to the side of the recording material facing the second intermediate transfer member while the recording material is sucked and retained by the second intermediate transfer member after the first image secondary transfer step.

2 more elements

A double-sided image forming apparatus comprising:

a first image carrier for carrying a first image;
a first intermediate transfer member disposed so as to be opposite to the first image carrier;
first intermediate primary transfer means for primarily transferring the first image from the first image carrier to the first intermediate transfer member;
a second image carrier for carrying a second image;
a second intermediate transfer member disposed so as to be opposite to the second image carrier;
second intermediate primary transfer means for primarily transferring the second image from the second image carrier to the second intermediate transfer member;
and
intermediate secondary transfer means for secondarily transferring the primarily transferred images from the respective intermediate transfer members to both sides of a recording material, in the area where the first intermediate transfer material and the second intermediate transfer material come into contact with or in proximity to each other, wherein said intermediate second, transfer means comprises a pair of transfer members for respectively transferring images to said first and second sides of said recording material, said transfer members being provided so as to be opposite to each other with said first and second intermediate transfer members sandwiched therebetween,
wherein the primarily transferred images are secondarily transferred to the first and second sides of said recording material in a consecutive manner by means of said transfer members.

6 more elements

A double-sided image forming apparatus comprising:

a first image carrier for carrying a first image;
a first intermediate transfer member disposed so as to be opposite to the first image carrier;
first intermediate primary transfer means for primarily transferring the first image from the first image carrier to the first intermediate transfer member;
a second image carrier for carrying a second image;
a second intermediate transfer member disposed so as to be opposite to the second image carrier;
second intermediate primary transfer means for primarily transferring the second image from the second image carrier to the second intermediate transfer member;
first intermediate secondary transfer means for retaining the recording material in a sucked way so as to correspond to the second image formed on the second intermediate transfer material and for secondarily transferring the first transfer image from the first intermediate transfer member to the side of the recording material facing the first intermediate transfer member, in the area where the first intermediate transfer material and the second intermediate transfer material come into contact with or in proximity to each other;
and
second intermediate secondary transfer means provided subsequent to the first intermediate secondary transfer means for secondarily transferring the primarily transferred image from the second intermediate transfer member to the side of the recording material facing the second intermediate transfer member while the recording material is sucked and retained by the second intermediate transfer member.

6 more elements

Dependencies are inferred from the claim text.