JPS62149046U - - Google Patents

Description

【図面の簡単な説明】[Brief explanation of the drawing]

第１図乃至第５図は、現像ユニツトとともにド
ラムユニツトも容易に着脱可能にした本考案の実
施例に係るレーザプリンタを示し、第１図はトレ
イ及び給紙カセツト等を取外した状態を示す全体
概略図、第２図は主として現像ユニツトとドラム
ユニツト、及びこれらの着脱機構の位置関係を示
す平面図、第３図は主として各種プロセス手段の
位置関係を示す要部正面断面図、第４図は現像ユ
ニツトの位置決め固定手段を示す斜視図、第５図
は現像ユニツトとドラムユニツト間の離間手段を
示す要部正面図である。 ２：現像ユニツト、４０：保持手段（圧接レバ
ー）、４５：弾性部材（クリツククラツクバネ）
、１４：感光体ドラム、５：離間手段（レバー部
材）。 Figures 1 to 5 show a laser printer according to an embodiment of the present invention in which the drum unit as well as the developing unit can be easily attached and detached, and Figure 1 shows the entire printer with the tray and paper feed cassette removed. 2 is a schematic diagram, and FIG. 2 is a plan view mainly showing the positional relationship between the developing unit and the drum unit, and their attachment/detachment mechanism. FIG. 3 is a front sectional view of main parts mainly showing the positional relationship of various process means. FIG. 5 is a perspective view showing the positioning and fixing means for the developing unit, and FIG. 5 is a front view of essential parts showing the separating means between the developing unit and the drum unit. 2: Developing unit, 40: Holding means (pressing lever), 45: Elastic member (click spring)
, 14: Photosensitive drum, 5: Separating means (lever member).

Claims (1)

【実用新案登録請求の範囲】 (1) 少なくとも現像手段を含むプロセスユニツ
トが装置本体に対し着脱自在に構成された電子写
真装置において、弾性的付勢力により前記プロセ
スユニツトを位置決め保持する保持手段を有し、
前記弾性的付勢力に抗して行われるプロセスユニ
ツトの感光体ドラムからの離間動作に連動して、
該プロセスユニツトに付勢された保持手段の圧接
力が解除され、前記プロセスユニツトを取外し可
能に構成した事を特徴とする電子写真装置。 (2) 前記プロセスユニツトが感光体ドラムから
離接する方向に脱着可能に構成した実用新案登録
請求の範囲第１項記載の電子写真装置。 (3) 前記プロセスユニツトが装置上面より取り
出し可能に構成した実用新案登録請求の範囲第１
項又は第２項記載の電子写真装置。 (4) 前記プロセスユニツトの感光体ドラムから
の離間動作に連動して、前記保持手段の弾性的付
勢力の付勢方向が切換わり、該付勢力により前記
保持手段が前記プロセスユニツトの圧接位置から
離間する方向に移動するように構成した実用新案
登録請求の範囲第１項から第３項までのいずれか
１項記載の電子写真装置。[Claims for Utility Model Registration] (1) An electrophotographic apparatus in which a process unit including at least a developing means is configured to be detachably attached to the main body of the apparatus, including a holding means for positioning and holding the process unit using an elastic biasing force. death,
In conjunction with the separation movement of the process unit from the photoreceptor drum, which is performed against the elastic biasing force,
An electrophotographic apparatus characterized in that the pressing force of the holding means applied to the process unit is released so that the process unit can be removed. (2) The electrophotographic apparatus according to claim 1, wherein the process unit is configured to be detachable in a direction toward and away from the photoreceptor drum. (3) Claim 1 of the utility model registration, in which the process unit is configured to be removable from the top of the device.
The electrophotographic device according to item 1 or 2. (4) In conjunction with the separation movement of the process unit from the photoreceptor drum, the urging direction of the elastic urging force of the holding means is switched, and the urging force causes the holding means to move from the press-contact position of the process unit. An electrophotographic apparatus according to any one of claims 1 to 3, which is configured to move in a direction of separation.