JPS63188662U

JPS63188662U -

Info

Publication number: JPS63188662U
Application number: JP7733887U
Authority: JP
Priority date: 1987-05-25
Filing date: 1987-05-25
Publication date: 1988-12-02

Description

[Brief explanation of the drawing]

第１図は一実施例の側断面図、第２図は潜像担
持体の駆動系の一例の図式図、第３図は制御装置
の一例のブロツク図、第４図はパターン像の一例
を示す平面図、第５図はパターン像のピツチ変動
の一例を示すグラフ、第６図は第１図の要部の図
式図、第７図はパターン像のピツチ変動の他の一
例を示すグラフである。１４ＢＫ、１４Ｃ，１４Ｍ，１４Ｙ……潜像担
持体、１５ＢＫ，１５Ｃ，１５Ｍ，１５Ｙ……帯
電チヤージヤ、１２ＢＫ，１２Ｃ，１２Ｍ，１２
Ｙ……露光手段、１６ＢＫ，１６Ｃ，１６Ｍ，１
６Ｙ……現像手段、１７ＢＫ，１７Ｃ，１７Ｍ，
１７Ｙ……転写手段、１３ＢＫ，１３Ｃ，１３Ｍ
，１３Ｙ……記録装置、パターン形成手段、２１
……転写紙搬送手段、２７ＢＫ，２７Ｃ，２７Ｍ
，２７Ｙ……パターン像、２４ＢＫ，２４Ｃ，２
４Ｍ，２４Ｙ……パターン検知手段、３２……制
御手段、２５……転写紙搬送手段の駆動軸。 FIG. 1 is a side sectional view of one embodiment, FIG. 2 is a schematic diagram of an example of a drive system for a latent image carrier, FIG. 3 is a block diagram of an example of a control device, and FIG. 4 is an example of a pattern image. 5 is a graph showing an example of pitch variation of a pattern image, FIG. 6 is a schematic diagram of the main part of FIG. 1, and FIG. 7 is a graph showing another example of pitch variation of a pattern image. be. 14BK, 14C, 14M, 14Y...Latent image carrier, 15BK, 15C, 15M, 15Y... Charger, 12BK, 12C, 12M, 12
Y...Exposure means, 16BK, 16C, 16M, 1
6Y...Developing means, 17BK, 17C, 17M,
17Y...Transfer means, 13BK, 13C, 13M
, 13Y...recording device, pattern forming means, 21
...Transfer paper conveyance means, 27BK, 27C, 27M
, 27Y...pattern image, 24BK, 24C, 2
4M, 24Y... pattern detection means, 32... control means, 25... drive shaft of transfer paper conveyance means.

Claims

[Claims for Utility Model Registration] (1) A moving latent image carrier, a charging charger that uniformly charges the surface of the latent image carrier, and an electrostatic charger that projects image light onto the latent image carrier. It has a plurality of recording devices each including an exposure means for forming an image, a developing means for making the electrostatic latent image visible, and a transfer means for transferring the developed image onto a transfer paper, and a transfer paper conveying means. Therefore, in an image forming apparatus that sequentially conveys a transfer paper to each recording device and transfers images in an overlapping manner, a pattern image is formed on each of the latent image carriers, and this pattern image is transferred to the transfer paper conveyance means. a pattern forming means for transferring a pattern image onto the latent image carrier; a pattern detecting means for detecting the pattern image; and a control means for controlling movement of the latent image carrier based on a signal from the pattern detecting means. An image forming apparatus characterized by: (2) The image forming apparatus according to claim 1, wherein the pattern forming means is also used by the recording apparatus. (3) Registration of a utility model characterized in that the distance along the transfer paper transport means between the arrangement position of the pattern detection means and the transfer position of the corresponding recording device is an integral multiple of the circumference of the photoreceptor. Claim 1 or 2
The image forming apparatus described in . (4) The distance along the transfer paper transport means between the arrangement position of the pattern detection means and the transfer position of the corresponding recording device is a common multiple of the circumference of the photoreceptor and the drive shaft circumference of the transfer paper transport means. An image forming apparatus according to claim 1 or 2 of the utility model registration claim.