JP2021167869A5

JP2021167869A5 -

Info

Publication number: JP2021167869A5
Application number: JP2020070565A
Authority: JP
Filing date: 2020-04-09
Publication date: 2023-03-30
Anticipated expiration: 2040-04-09

Description

本発明は、たとえば、
像担持体と、
前記像担持体上に画像を形成する画像形成手段と、
前記画像を前記像担持体からシートに転写する転写手段と、
前記画像形成手段により前記像担持体上に形成されたテスト画像からの反射光を検知する光検知手段と、
前記光検知手段による検知結果に基づき前記画像形成手段を制御する制御手段と、を有し、
前記光検知手段は、
プリント基板と、
前記プリント基板の第一面に配置され、前記像担持体上の前記テスト画像に対して光を照射する発光素子と、
前記プリント基板の前記第一面に配置され、前記像担持体上の前記テスト画像からの反射光を受光する受光素子と、
前記発光素子と前記受光素子とを覆うように前記プリント基板の前記第一面に設けられたカバー手段と、
前記プリント基板の前記第一面の反対側にある前記プリント基板の第二面に設けられ、前記発光素子を制御するケーブルが接続される接続手段と、
前記第一面に設けられ、前記プリント基板の前記第一面を支持する第一支持部と、前記プリント基板の前記第一面を支持する第二支持部と、を有する支持手段と、を有し、
前記カバー手段は、前記第一面において、前記プリント基板の長手方向における前記第一支持部と前記第二支持部との間に設けられている、画像形成装置を提供する。 The present invention, for example,
an image carrier;
an image forming means for forming an image on the image carrier;
a transfer means for transferring the image from the image carrier to a sheet;
light detection means for detecting reflected light from a test image formed on the image carrier by the image forming means;
a control means for controlling the image forming means based on a detection result by the light detection means;
The light detection means is
a printed circuit board;
a light-emitting element arranged on the first surface of the printed circuit board for irradiating the test image on the image carrier;
a light receiving element arranged on the first surface of the printed circuit board for receiving reflected light from the test image on the image carrier;
cover means provided on the first surface of the printed circuit board so as to cover the light emitting element and the light receiving element;
connection means provided on a second surface of the printed circuit board opposite to the first surface of the printed circuit board and connected to a cable for controlling the light emitting element;
supporting means provided on the first surface and having a first supporting portion that supports the first surface of the printed circuit board and a second supporting portion that supports the first surface of the printed circuit board; death,
The cover means is provided on the first surface between the first support portion and the second support portion in the longitudinal direction of the printed circuit board.

Claims

an image carrier;
an image forming means for forming an image on the image carrier;
a transfer means for transferring the image from the image carrier to a sheet;
light detection means for detecting reflected light from a test image formed on the image carrier by the image forming means;
a control means for controlling the image forming means based on a detection result by the light detection means;
The light detection means is
a printed circuit board;
a light-emitting element arranged on the first surface of the printed circuit board for irradiating the test image on the image carrier;
a light receiving element arranged on the first surface of the printed circuit board for receiving reflected light from the test image on the image carrier;
cover means provided on the first surface of the printed circuit board so as to cover the light emitting element and the light receiving element;
connection means provided on a second surface of the printed circuit board opposite to the first surface of the printed circuit board and connected to a cable for controlling the light emitting element;
supporting means provided on the first surface and having a first supporting portion that supports the first surface of the printed circuit board and a second supporting portion that supports the first surface of the printed circuit board; death,
The image forming apparatus, wherein the cover means is provided between the first support portion and the second support portion in the longitudinal direction of the printed circuit board on the first surface.

2. The image forming apparatus according to claim 1, further comprising a screw inserted from said second surface of said printed circuit board toward said first surface of said printed circuit board and screwed into said support means.

The light detection means is
another light emitting element disposed on the first surface of the printed circuit board;
another light receiving element arranged on the first surface of the printed circuit board;
3. The image forming apparatus according to claim 1, further comprising a cormorant.

4. The image forming apparatus according to claim 1, wherein said light receiving element receives specularly reflected light from said test image.

5. The image forming apparatus according to claim 1, wherein said light emitting element and said light receiving element are arranged side by side along the longitudinal direction of said printed circuit board.

further comprising an opening provided in the support means so as to be between the first support portion and the second support portion in the longitudinal direction of the printed circuit board;
6. The image forming apparatus according to claim 1, wherein said cable is connected to said connecting means through said opening.

7. The image forming apparatus according to claim 1, wherein said light receiving element receives diffusely reflected light from said test image.

The image forming apparatus according to any one of claims 1 to 7, wherein the first surface of the printed circuit board faces the surface of the image carrier.

9. The image forming apparatus according to claim 1, wherein said control means controls density of an image formed by said image forming means based on said detection result by said light detection means.

The image forming means is configured to form a plurality of images of different colors,
10. The controller according to any one of claims 1 to 9, wherein the control means controls relative positions between the plurality of images of different colors formed by the image forming means based on the detection result by the light detection means. The image forming apparatus according to .