JPH0316157U

JPH0316157U -

Info

Publication number: JPH0316157U
Application number: JP7627189U
Authority: JP
Priority date: 1989-06-30
Filing date: 1989-06-30
Publication date: 1991-02-18
Anticipated expiration: 2004-06-30
Also published as: JPH0727481Y2

Description

[Brief explanation of drawings]

第１図は本考案の原理を示す原理図、第２図〜
第８図は本考案の一実施例を説明するためのもの
で、このうち第２図は記録装置の概略構成図、第
３図は第１および第２のトナー濃度検出センサの
配置と感光体ドラムのトナー像との関係を示す斜
視図、第４図は記録装置の回路構成の概要を示す
ブロツク図、第５図は記録装置の搬送系の一部を
表わした要部斜視図、第６図は記録動作の制御を
示す流れ図、第７図は変調用の信号の時間変化を
示す各種タイミング図、第８図は記録用紙が送り
方向と直交する方向に許容範囲外のずれを発生さ
せた場合の一例を示すドラム表面の展開図である
。１１……感光体、１２……画像記録用静電潜像
形成手段、１３，１９……ずれ検出用静電潜像形
成手段、１４，２１……現像手段、１５，２２…
…記録用紙供給手段、１６，２３……転写手段、
１７……トナー濃度測定手段、１８，２７……判
別手段、２５……トナー濃度測定手段、２６……
演算手段、３１……感光体ドラム、３２……チヤ
ージコロトロン、３３……トランスフアコロトロ
ン、４１……変調用の信号、４３……現像装置、
４４……記録用紙、４６……第１の送りロール、
４８……第２の送りロール、５１……第１のトナ
ー濃度検出センサ、５２……第２のトナー濃度検
出センサ、６５……センサモータ、６６……静電
潜像形成領域、６７−１……右ずれ検出用第１ト
ナー像、６７−２……右ずれ検出用第２トナー像
、６８−１……左ずれ検出用第１トナー像、６８
−２……左ずれ検出用第２トナー像、７１……Ｃ
ＰＵ、７３……ＲＯＭ、７４……ＲＡＭ、１１１
，１１２……ずれ検出用信号。 Figure 1 is a principle diagram showing the principle of this invention, Figure 2~
FIG. 8 is for explaining one embodiment of the present invention, of which FIG. 2 is a schematic configuration diagram of the recording device, and FIG. 3 is a diagram showing the arrangement of the first and second toner concentration detection sensors and the photoreceptor. FIG. 4 is a block diagram showing an overview of the circuit configuration of the recording device; FIG. 5 is a perspective view of a main part showing a part of the conveyance system of the recording device; FIG. The figure is a flowchart showing the control of the recording operation, Figure 7 is a various timing diagram showing the time change of the modulation signal, and Figure 8 is a diagram showing the occurrence of deviation of the recording paper outside the allowable range in the direction perpendicular to the feeding direction. FIG. 3 is a developed view of a drum surface showing an example of the case. 11... Photoreceptor, 12... Electrostatic latent image forming means for image recording, 13, 19... Electrostatic latent image forming means for detecting displacement, 14, 21... Developing means, 15, 22...
... Recording paper supply means, 16, 23 ... Transfer means,
17... Toner concentration measuring means, 18, 27... Discriminating means, 25... Toner concentration measuring means, 26...
Calculating means, 31... Photosensitive drum, 32... Charge corotron, 33... Transfer corotron, 41... Signal for modulation, 43... Development device,
44... Recording paper, 46... First feed roll,
48... Second feed roll, 51... First toner density detection sensor, 52... Second toner density detection sensor, 65... Sensor motor, 66... Electrostatic latent image forming area, 67-1 ...First toner image for right shift detection, 67-2...Second toner image for right shift detection, 68-1...First toner image for left shift detection, 68
-2...Second toner image for left shift detection, 71...C
PU, 73...ROM, 74...RAM, 111
, 112...Signal for detecting deviation.

Claims

[Claims for Utility Model Registration] 1. A photoreceptor, and an image for forming an electrostatic latent image on the photoreceptor in an image forming area of the same size as the recording paper used to record the image on the recording paper. an electrostatic latent image forming means for recording; and a deviation detection device for forming an electrostatic latent image for deviation detection at a position on the photoreceptor slightly deviated from the image forming area in a direction perpendicular to the feeding direction of the recording paper. an electrostatic latent image forming means; a developing means for developing the electrostatic latent images formed by both of the electrostatic latent image forming means to form a toner image for image recording and a toner image for detecting deviation; and a recording sheet on the photoreceptor. a recording paper supply means for supplying the recording paper; a transfer means for transferring the toner image onto the recording paper supplied by the recording paper supply means; and a photoreceptor after the toner image has been transferred by the transfer means. A toner density measuring means for measuring the toner density of the toner image for detecting misalignment on the top, and determining whether the misalignment in the direction perpendicular to the feeding direction of the recording paper is within an allowable range based on the measurement result of this toner density measuring means. A recording device comprising: determining means. 2. A photoconductor, and an electrostatic latent image forming means for image recording that forms an electrostatic latent image for recording an image on the recording paper in an image forming area on the photoconductor that is the same size as the recording paper used. and an electrostatic latent image for misalignment detection, which forms an electrostatic latent image for misalignment detection at two positions on the photoreceptor that are slightly shifted from the image forming area in both directions perpendicular to the feeding direction of the recording paper. a forming means; a developing means for developing the electrostatic latent images formed by both of these electrostatic latent image forming means to form a toner image for image recording and a toner image for detecting deviation; and a recording means for supplying recording paper to the photoreceptor. a paper supply means; a transfer means for transferring the toner image onto the recording paper supplied by the recording paper supply means; and two locations on the photoreceptor after the toner image is transferred by the transfer means. a toner density measuring means for measuring the toner density of a toner image for detecting misalignment; a calculating means for calculating the ratio of these toner densities; Discrimination means for determining that a deviation in a direction perpendicular to the recording medium is outside a permissible range.