US 8,027,621 B2Granted

Developer supply case and image forming apparatus

AssigneeCanon Kabushiki Kaisha

InventorsTetsuo Isomura, Teruaki Tsurusaki, Yukihiro Kitozaki

Life of this patent

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Abstract

A developer supply case which is detachably attachable to an inserted portion of an image forming apparatus body includes a case body which stores a developer in its inside; an engaging portion which causes an inserting load W when engaged with an engaged portion provided in the image forming apparatus at completion of insertion of the developer supply case into the inserted portion; and a load causing portion which is provided so as to abut part of the inserted portion in insertion of the developer supply case into the inserted portion and causes an inserting load P1 before the engaging portion is engaged with the engaged portion, wherein the inserting load W and the inserting load P1 satisfy the following relation: P1≧W.

Claims8

Dependent claims

A developer supply container detachably mountable to an image forming apparatus, said container being set by a setting operation including a manually inserting operation into an insertion portion of the image forming apparatus, said container comprising:

a container body having an inner space configured and positioned to contain developer, an opening configured and positioned to permit discharge of the developer out of said container body, and a first locked portion;
a shutter configured and positioned to open and close said opening, said shutter having a locking portion configured and positioned to lock with said first locked portion of said container body, said locking portion being releasable from said first locked portion with elastic deformation of said locking portion by abutting with the insertion portion at an end of the inserting operation;
and
an insertion load causing portion configured and positioned to cause an insertion load by sliding contact with the insertion portion during the inserting operation,
wherein the insertion load, which is caused by said insertion load causing portion, for the inserting operation before a releasing operation of said locking portion at the end of the inserting operation is performed is larger than an insertion load for the inserting operation during the releasing operation.

2 more elements

Dependencies are inferred from the claim text.

Facts

Application: 13/052,455Filed 21 Mar 2011 · division
Priority: JP 2007-04015821 Feb 2007
Published: US 2011/0164898 A17 Jul 2011
Granted: 27 Sep 2011
Term ends: Not estimatedThe source records don’t support an estimate.

Classification7 codes

G03G 15/0886
Sealing of developer cartridges: by mechanical means, e.g. shutter, plug
G03G 15/0875
Arrangements for supplying new developer: cartridges having a box like shape
G03G 15/0877
Arrangements for preparing, mixing, supplying or dispensing developer: arrangements for metering and dispensing developer from a developer…
G03G 2215/068
Toner cartridge or other attachable and detachable container for supplying developer material to replace the used material: having a box like shape

Family

Application12/031,378Parent of this division · filed 14 Feb 2008
US 2011/0164898 A1Pre-grant publication · published 7 Jul 2011
US 7,953,351 B2Parent of this division
US 2008/0199224 A1Published application
US 8,027,621 B2This patent

From the US filing history. Foreign family members aren’t listed.