JPS644453U - - Google Patents
Info
- Publication number
- JPS644453U JPS644453U JP9844487U JP9844487U JPS644453U JP S644453 U JPS644453 U JP S644453U JP 9844487 U JP9844487 U JP 9844487U JP 9844487 U JP9844487 U JP 9844487U JP S644453 U JPS644453 U JP S644453U
- Authority
- JP
- Japan
- Prior art keywords
- light
- sensor
- developer
- light source
- reflected
- 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 3
- 239000012780 transparent material Substances 0.000 claims 1
Landscapes
- Investigating Or Analysing Materials By Optical Means (AREA)
- Dry Development In Electrophotography (AREA)
Description
第１図はこの考案の実施例に係る現像装置の概
略縦断面図、第２図は第１図に示す現像装置の概
略断面図、第３図はこの考案に係るトナー濃度検
知装置の概略断面図、第４図は従来のトナー濃度
検知装置の概略断面図である。
２１……窓、２２……ランプ、２３……第１セ
ンサ、２４……第２センサ、４２……ねじ。
FIG. 1 is a schematic vertical sectional view of a developing device according to an embodiment of this invention, FIG. 2 is a schematic sectional view of the developing device shown in FIG. 1, and FIG. 3 is a schematic sectional view of a toner concentration detection device according to this invention. 4 are schematic cross-sectional views of a conventional toner concentration detection device. 21... window, 22... lamp, 23... first sensor, 24... second sensor, 42... screw.
Claims (1)
を照射する光源と、その現像剤で反射した反射光
を受光する第１センサと、前記光源の光を直接受
光する第２センサとを備えているトナー濃度検知
装置において、前記第１センサまたは第２センサ
のうち少なくともいずれか一方のセンサに入射す
る光量を調整する光量調整手段を設けたことを特
徴とするトナー濃度検知装置。 A light source that irradiates light onto a developer inside through a window formed of a transparent material, a first sensor that receives reflected light reflected by the developer, and a second sensor that directly receives light from the light source. 1. A toner concentration detection device comprising: a light amount adjusting means for adjusting the amount of light incident on at least one of the first sensor and the second sensor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9844487U JPS644453U (en) | 1987-06-29 | 1987-06-29 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9844487U JPS644453U (en) | 1987-06-29 | 1987-06-29 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS644453U true JPS644453U (en) | 1989-01-11 |
Family
ID=31324714
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP9844487U Pending JPS644453U (en) | 1987-06-29 | 1987-06-29 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS644453U (en) |
-
1987
- 1987-06-29 JP JP9844487U patent/JPS644453U/ja active Pending