US 12,552,186 B2Granted

Biasing force adjusting device, transfer device, and image forming apparatus

AssigneeRicoh Company, Ltd.

InventorsYutaka Goto, Seiichi Kogure, Hiroshi Kikuchi, Hideki Kimura, Yutaka Takahashi, Kazuhiro Shimada, Yusuke Ishizuka, Takuya Akiyama, Yuuki Aoki

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Abstract

A biasing force adjusting device includes a roller, a roller holder, a first biasing member, and a second biasing member. The roller faces a mover. The roller holder holds the roller and is displaceable with respect to the mover. The first biasing member applies a first biasing force to the roller holder to press the roller against the mover. The second biasing member applies a second biasing force greater than the first biasing force to the roller holder to press the roller against the mover.

Claims21

Dependent claims

A biasing force adjusting device comprising:

a roller to face a mover;
a roller holder holding the roller and being displaceable with respect to the mover;
a first biaser having a first spring structure to apply a first biasing force to a first portion of the roller holder to press the roller against the mover;
a second biaser having a second spring structure to apply a second biasing force to a second portion of the roller holder to press the roller against the mover,
wherein a biasing force to the roller is switchable from a first state to a second state, only the first biaser is biasing the first portion of the roller holder in the first state, and
wherein the first biaser and the second biaser are arranged in parallel.

3 more elements

Dependencies are inferred from the claim text.

Facts

Application: 17/885,557Filed 11 Aug 2022
Priority: JP 2021-14059031 Aug 2021
Published: US 2023/0061068 A12 Mar 2023
Granted: 17 Feb 2026
Term ends: Not estimatedThe source records don’t support an estimate.

Classification9 codes

B41J 25/312
Bodily-movable mechanisms for print heads or carriages movable towards or from paper surface: with print pressure adjustment mechanisms, e.g.…
G03G 15/1615
Using at least one intermediate support: relating to the driving mechanism for the intermediate support, e.g. gears, couplings, belt tensioning
B65H 5/062
By rollers or balls, e.g. between rollers: between rollers or balls
G03G 15/1675
At least one of the recording member or the transfer member being rotatable during the transfer: with means for controlling the bias applied in…