US 2026/0064068 A1Published application

Image forming apparatus

AssigneeCanon Kabushiki Kaisha

InventorMASAAKI TAKEUCHI

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Abstract

An image forming apparatus includes a replaceable unit including a driven portion, and an apparatus body to which the replaceable unit is detachably attached. The apparatus body includes (i) a driving unit including a drive source and an output portion, (ii) a first drive transmission portion connected to the output portion and to the replaceable unit, and (iii) a second drive transmission portion including an allowance mechanism and connected to the output portion and to the replaceable unit. The allowance mechanism includes a first rotary member and a second rotary member and configured to transmit the driving force between the first rotary member and the second rotary member and allow change in a ratio between a first angular velocity of the first rotary member and a second angular velocity of the second rotary member.

Claims20

Dependent claims

An image forming apparatus comprising:

a replaceable unit including a driven portion;
and
an apparatus body to which the replaceable unit is detachably attached, the apparatus body including
(i) a driving unit including a drive source configured to generate a driving force and an output portion configured to output the driving force,
(ii) a first drive transmission portion connected to the output portion and to the replaceable unit, and
(iii) a second drive transmission portion including an allowance mechanism and connected to the output portion and to the replaceable unit, the allowance mechanism including a first rotary member and a second rotary member and configured to transmit the driving force between the first rotary member and the second rotary member and allow change in a ratio between a first angular velocity of the first rotary member and a second angular velocity of the second rotary member,
wherein a transmission path of the driving force includes a closed loop, which includes the driven portion, the output portion, the first drive transmission portion, and the second drive transmission portion, and
wherein the first drive transmission portion and the second drive transmission portion are configured such that the first angular velocity is different from the second angular velocity in a case where the driven portion is driven by the drive source.

5 more elements

An image forming apparatus comprising:

a unit including a driven portion;
a driving unit including a drive source configured to generate a driving force and an output portion configured to output the driving force;
a first drive transmission portion connected to the output portion and to the unit;
and
a second drive transmission portion including a planetary gear mechanism and connected to the output portion and to the unit,
wherein a transmission path of the driving force includes a closed loop, which includes the driven portion, the output portion, the first drive transmission portion, and the second drive transmission portion.

3 more elements

Dependencies are inferred from the claim text.

Facts

Application: 19/302,665Filed 18 Aug 2025
Priority: JP 2024-1507952 Sep 2024
Published: 5 Mar 2026
Term ends: Not estimatedThe source records don’t support an estimate.

Classification6 codes

G03G 15/757
Details relating to xerographic drum, band or plate, e.g. replacing, testing: drive mechanisms for photosensitive medium, e.g. gears
F16H 37/041
Combinations of toothed gearings only: for conveying rotary motion with constant gear ratio
G03G 21/1857
Means for handling the process cartridge in the apparatus body: for transmitting mechanical drive power to the process cartridge, drive…
G03G 21/186
For transmitting mechanical drive power to the process cartridge, drive mechanisms, gears, couplings, braking mechanisms: axial couplings

Family

No related US applications are recorded in the indexed filing history.

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