JPH0339748U

JPH0339748U -

Info

Publication number: JPH0339748U
Application number: JP10073789U
Authority: JP
Priority date: 1989-08-29
Filing date: 1989-08-29
Publication date: 1991-04-17

Description

[Brief explanation of the drawing]

第１図は第２図に示すレーザプリンタのこの考
案に係る要部のみの概略図、第２図はこの考案の
一実施例であるレーザプリンタの概略構成図、第
３図は同じくそのトナーカラー識別部材とその検
出手段であるフオトインタラプタとの関係を第１
図の矢示Ａ方向から見た拡大図、第４図イ，ロ，
ハはそれぞれこの考案の他の実施例の各トナー色
用のトナーカラー識別部材とその検出手段である
フオトインタラプタ・アレイとの関係を示す第３
図と同様な図である。１……感光体ドラム、３……現像ユニツト、４
………トナーカートリツジ、６……フオトインタ
ラプタ（検出手段）、６′……フオトインタラプ
タ・アレイ（検出手段）、６Ａ，６Ｂ，６Ｃ……
フオトインタラプタ部、２１，２２，２３……ト
ナーカラー識別部材、２４，２５ａ，２５ｂ，２
６……遮蔽板、６１……ホルダ、６２……間〓、
６３……発光素子、６４……受光素子。 Fig. 1 is a schematic diagram of only the main parts of the laser printer shown in Fig. 2 according to this invention, Fig. 2 is a schematic configuration diagram of a laser printer which is an embodiment of this invention, and Fig. 3 is a toner color diagram of the same. The relationship between the identification member and the photo interrupter that is its detection means is
Enlarged view seen from the direction of arrow A in the figure, Figure 4 A, B,
C shows the relationship between the toner color identification member for each toner color in other embodiments of this invention and the photointerrupter array which is the detection means thereof.
It is a figure similar to the figure. 1...Photosensitive drum, 3...Developing unit, 4
......Toner cartridge, 6...Photo interrupter (detection means), 6'...Photo interrupter array (detection means), 6A, 6B, 6C...
Photo interrupter section, 21, 22, 23... Toner color identification member, 24, 25a, 25b, 2
6... Shielding plate, 61... Holder, 62... Between,
63... Light emitting element, 64... Light receiving element.

Claims

[Scope of Claim for Utility Model Registration] 1. A developing unit that supplies toner onto a photoconductor on which an electrostatic latent image is formed to visualize it, and a toner that is detachably attached to the developing unit and that stores the toner. In an image forming apparatus equipped with a developing device consisting of a cartridge, a toner color identification member is provided protruding from the outer surface of the toner cartridge at a unique position that differs depending on the color of the toner, and the developing unit is provided with a toner color identification member, An image forming apparatus characterized by comprising a detection means for detecting a toner color identification member when a cartridge is attached. 2. In the image forming apparatus according to claim 1, the light emitting element and the light receiving element as the detection means are disposed between the holder.
A photo interrupter placed opposite the
When a toner cartridge containing toner of a color matching the developing unit is installed, the toner color identification member is inserted into the space, and a toner cartridge containing toner of another color is arranged. An image forming apparatus characterized in that a shielding member is provided to prevent insertion of a toner color identification member when a cartridge is attached.