JPH01125460U - - Google Patents

Description

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

第１図は本実施例の現像剤量検知装置の要部を
示す斜視図、第２図ａは本実施例の現像剤容器内
に収容された現像剤量が多い場合の要部断面図、
第２図ｂは本実施例の現像剤容器内に収容された
現像剤量がやや少ない場合と検知部の移動検知位
置とを示す動作図、第２図ｃは本実施例の現像剤
容器内に収容された現像剤量が大きく減少した場
合と検知部の移動検知位置とを示す動作図、第３
図は検知スタート位置の設定にマイクロスイツチ
を用いた場合の要部斜視図、第４図は検知スター
ト位置の設定に遮光部材を用いた場合の要部斜視
図、第５図は残量検知用ブロツク図、第６図は残
量検知用フローチヤート、第７図は圧力センサを
用いた従来の現像剤確認機構の断面図、第８図は
光による検知部を用いた従来の現像剤確認機構を
示す要部の斜視図である。 １６……現像剤容器、１７……検知部、１８…
…可動部材、２５，２６……軸端、２７……光源
、２８……受光素子、３０……現像剤。 FIG. 1 is a perspective view showing the main parts of the developer amount detection device of this embodiment, and FIG. 2a is a sectional view of the main parts when the amount of developer contained in the developer container of this embodiment is large.
Fig. 2b is an operation diagram showing the case where the amount of developer contained in the developer container of this embodiment is slightly small and the movement detection position of the detection unit, and Fig. 2c is an operation diagram showing the inside of the developer container of this embodiment. FIG. 3 is an operation diagram showing a case where the amount of developer stored in the storage area is greatly reduced and the movement detection position of the detection unit.
The figure is a perspective view of the main part when a micro switch is used to set the detection start position, Figure 4 is a perspective view of the main part when a light shielding member is used to set the detection start position, and Figure 5 is for detecting the remaining amount. Block diagram, Figure 6 is a flowchart for detecting remaining amount, Figure 7 is a sectional view of a conventional developer confirmation mechanism using a pressure sensor, and Figure 8 is a conventional developer confirmation mechanism using a light detection section. FIG. 16...Developer container, 17...Detection section, 18...
...Movable member, 25, 26...Shaft end, 27...Light source, 28...Light receiving element, 30...Developer.

Claims (1)

【実用新案登録請求の範囲】[Scope of utility model registration request] 現像剤を収容する現像剤容器と、該現像剤容器
内に設置され開口された光路をもつ検知部を備え
て移動可能に形成された現像剤撹拌部材と、前記
現像剤容器外に設置され前記検知部に連通する前
記現像剤撹拌部材の軸端側にそれぞれ対設される
光源および受光素子とを有することを特徴とする
現像剤量検知装置。 a developer container accommodating developer; a movable developer agitating member including a detection section installed in the developer container and having an open optical path; and a developer stirring member installed outside the developer container and configured to be movable. A developer amount detection device comprising a light source and a light receiving element, each of which is provided oppositely to the shaft end side of the developer stirring member that communicates with a detection portion.