JPS6374654U

JPS6374654U -

Info

Publication number: JPS6374654U
Application number: JP16856586U
Authority: JP
Priority date: 1986-11-01
Filing date: 1986-11-01
Publication date: 1988-05-18

Description

[Brief explanation of the drawing]

第１図は、本考案の画像形成装置としての液晶
プリンタの概略構成図、第２図は、本考案の液晶
プリンタに使用する帯電器の要部構成図、第３図
は、本考案の液晶プリンタに使用する現像器の構
成図、第４図は、本考案の液晶プリンタのタイミ
ングチヤート図、第５図は、感光体ドラム上の表
面電位等を示す模式図、第６図ａ，ｂは、プリン
ト枚数とトナー濃度の関係を示す図、第７図は、
トナー濃度と画像濃度との関係を示すグラフであ
る。１……感光体ドラム、２……帯電器、２ａ……
帯電シールド、２ｂ……帯電ワイヤ、２ｃ……制
御電極、２ｄ，２ｅ……バリスタ、２ｆ……切換
リレー、３……液晶ヘツド、４……現像器、６…
…転写器、７……クリーナ、１１……現像剤、１
２……バイアス電源。 FIG. 1 is a schematic configuration diagram of a liquid crystal printer as an image forming apparatus of the present invention, FIG. 2 is a configuration diagram of main parts of a charger used in the liquid crystal printer of the present invention, and FIG. 3 is a diagram of the liquid crystal printer of the present invention. FIG. 4 is a timing chart of the liquid crystal printer of the present invention, FIG. 5 is a schematic diagram showing the surface potential etc. on the photosensitive drum, and FIG. 6 a and b are diagrams of the developing device used in the printer. , a diagram showing the relationship between the number of prints and toner density, FIG.
3 is a graph showing the relationship between toner density and image density. 1... Photosensitive drum, 2... Charger, 2a...
Charging shield, 2b...Charging wire, 2c...Control electrode, 2d, 2e...Varistor, 2f...Switching relay, 3...Liquid crystal head, 4...Developer, 6...
...Transfer device, 7...Cleaner, 11...Developer, 1
2...Bias power supply.

Claims

[Scope of utility model registration request]

A photoreceptor having photoconductivity, a charger for uniformly charging the surface of the photoreceptor, and an electrostatic latent image forming means for forming an electrostatic latent image by imagewise exposure on the uniformly charged photoreceptor. , a bias voltage is applied to develop the electrostatic latent image with a developer containing a high resistance magnetic toner and magnetic particles having approximately the same particle size as the high resistance magnetic toner and having a lower resistance than the high resistance magnetic toner. A developing device, a transfer device that transfers the developed toner image onto a transfer material, and a uniform charging amount of the photoconductor of the charging device, in an image area where the electrostatic latent image is formed and outside the image area. and a charging potential control means for changing the charging potential in some or all of the non-image areas, wherein the magnetic particles in the developer are attracted to and consumed in the non-image areas. .