JPH0377966U - - Google Patents
Info
- Publication number
- JPH0377966U JPH0377966U JP13859089U JP13859089U JPH0377966U JP H0377966 U JPH0377966 U JP H0377966U JP 13859089 U JP13859089 U JP 13859089U JP 13859089 U JP13859089 U JP 13859089U JP H0377966 U JPH0377966 U JP H0377966U
- Authority
- JP
- Japan
- Prior art keywords
- image forming
- forming apparatus
- detection mechanism
- photo sensor
- concentration detection
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 238000001514 detection method Methods 0.000 claims description 6
- 108091008695 photoreceptors Proteins 0.000 claims description 2
- 238000010586 diagram Methods 0.000 description 3
Landscapes
- Dry Development In Electrophotography (AREA)
Description
第1図は本考案実施例による画像形成装置の要
部構成を示す模型図、第2図は第1図に示した画
像形成装置に適用される現像剤濃度検知機構の外
観を示す斜視図、第3図、第4図は第1図に示し
た画像形成装置における要部構造を示す模型図、
第5図は第3図、第4図に示した要部の作用を説
明するための線図、第6図および第7図は第3図
、第4図に示した要部構造の変形例をそれぞれ示
す斜視図および側面図である。
1……画像形成装置、2……感光体、4……現
像装置、7……給紙装置、8……現像剤濃度検知
機構、8A……反射型フオトセンサ、9……アク
チユエータ、9A……支軸、9A1……一端、9
A2……他端。
FIG. 1 is a model diagram showing the main part configuration of an image forming apparatus according to an embodiment of the present invention, and FIG. 2 is a perspective view showing the appearance of a developer concentration detection mechanism applied to the image forming apparatus shown in FIG. 1. 3 and 4 are model diagrams showing the main structure of the image forming apparatus shown in FIG. 1;
Fig. 5 is a diagram for explaining the action of the main parts shown in Figs. 3 and 4, and Figs. 6 and 7 are modified examples of the structure of the main parts shown in Figs. 3 and 4. FIG. 2 is a perspective view and a side view, respectively. DESCRIPTION OF SYMBOLS 1... Image forming device, 2... Photoreceptor, 4... Developing device, 7... Paper feeding device, 8... Developer concentration detection mechanism, 8A... Reflective photo sensor, 9... Actuator, 9A... Support shaft, 9A1...One end, 9
A2...other end.
Claims (1)
フオトセンサを用いた現像剤濃度検知機構を備え
た画像形成装置において、 上記反射型フオトセンサにおける発光面および
受光面に対向する第1の態位とこれら各面から離
間してその面を露呈する第2の態位とに変位可能
な端部を有するアクチユエータと、 上記アクチユエータにおける端部に設けてある
濃度基準片とからなる現像剤濃度検知機構を備え
たことを特徴とする画像形成装置。 2 感光体と対向した位置に配置してある反射型
フオトセンサを用いた現像剤濃度検知機構を備え
た画像形成装置において、 上記反射型フオトセンサにおける発光面および
受光面に対向して各面を遮蔽する第1の態位とこ
れら各面から離間してその面を露呈する第2の態
位とに変位可能な一端部と給紙経路中に臨む他端
部とを有し、平生時、上記他端部が上記給紙経路
中に臨出することで上記一端部を第1の態位に設
定するとともに、給紙経路中に給送される記録紙
により当接することで上記一端部を第2の態位に
変位させるアクチユエータを有する現像剤濃度検
知機構を備えたことを特徴とする画像形成装置。[Scope of Claim for Utility Model Registration] 1. In an image forming apparatus equipped with a developer concentration detection mechanism using a reflective photo sensor disposed at a position facing a photoconductor, the light-emitting surface and the light-receiving surface of the reflective photo sensor an actuator having an end movable between a first position facing each other and a second position separating from each of these surfaces and exposing the surface; and a concentration reference piece provided at an end of the actuator. An image forming apparatus comprising a developer concentration detection mechanism comprising: 2. In an image forming apparatus equipped with a developer concentration detection mechanism using a reflective photo sensor disposed at a position facing the photoreceptor, each surface is shielded in opposition to the light emitting surface and the light receiving surface of the reflective photo sensor. It has one end that can be displaced into a first position and a second position that is spaced apart from each of these surfaces and exposes the surface, and the other end that faces into the paper feed path, and during normal use, the The one end is set in the first position by the end protruding into the paper feeding path, and the one end is set in the second position by being brought into contact with the recording paper fed into the paper feeding path. What is claimed is: 1. An image forming apparatus comprising: a developer concentration detection mechanism having an actuator for displacing the developer to the position shown in FIG.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP13859089U JPH0377966U (en) | 1989-11-29 | 1989-11-29 |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP13859089U JPH0377966U (en) | 1989-11-29 | 1989-11-29 |
Publications (1)
Publication Number | Publication Date |
---|---|
JPH0377966U true JPH0377966U (en) | 1991-08-06 |
Family
ID=31685680
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP13859089U Pending JPH0377966U (en) | 1989-11-29 | 1989-11-29 |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPH0377966U (en) |
-
1989
- 1989-11-29 JP JP13859089U patent/JPH0377966U/ja active Pending