JP2011024004A5

JP2011024004A5 -

Info

Publication number: JP2011024004A5
Application number: JP2009167723A
Authority: JP
Filing date: 2009-07-16
Publication date: 2012-05-10
Anticipated expiration: 2029-07-16

Description

第３の発明の画像形成装置は、複数の発光素子を駆動する前記第１の発明の光プリントヘッドを備えている。 An image forming apparatus according to a third aspect includes the optical print head according to the first aspect that drives a plurality of light emitting elements .

第３の発明の画像形成装置によれば、複数の発光素子を駆動する前記発明の光プリントヘッドを備えているので、待機時消費電力を略ゼロとすることができ、大幅な省エネルギーが実現できる。 According to the image forming apparatus of the third aspect of the present invention, since the optical print head of the present invention for driving a plurality of light emitting elements is provided, standby power consumption can be made substantially zero, and significant energy saving can be realized. .

プロセスユニット１０−１〜１０−４の各感光体ドラム１１に対向する位置には、それぞれ半導電性のゴム等によって形成された転写器２７が配設されている。各転写器２７には、感光体ドラム１１上に付着されたトナーによる顕像を用紙２０に転写する転写時に、各感光体ドラム１１の表面電位とこれら各転写器２７の表面電位に電位差を持たせるための電圧が印加されている。 At the positions facing the respective photosensitive drums 11 of the process units 10-1 to 10-4, transfer units 27 formed of semiconductive rubber or the like are respectively disposed. Each transfer device 27 has a potential difference between the surface potential of each photoconductor drum 11 and the surface potential of each of these transfer devices 27 at the time of transferring the visible image by the toner attached on the photoconductor drum 11 to the paper 20. A voltage for applying the voltage is applied.

このようにして記録面上に各色のトナー像が重ね合わされた後、定着器２８によってトナー像が定着された用紙２０は、排出ローラ２９，３０及びピンチローラ３１，３２に挟持されて、画像形成装置１の外部の用紙スタッカ部３３に排出される。以上の過程を経て、カラー画像が用紙２０上に形成される。 After the toner images of the respective colors are superimposed on the recording surface in this way, the paper 20 on which the toner image is fixed by the fixing device 28 is sandwiched between the discharge rollers 29 and 30 and the pinch rollers 31 and 32 to form an image. The paper is discharged to a paper stacker unit 33 outside the apparatus 1. Through the above process, a color image is formed on the paper 20.

ここで、前記各ドライバ１Ｃ１００において、ＶＤＤ端子に印加される電源電圧はＶＤＤであり、典型的な例では５Ｖである。これに対し、前記ＥＥＰＲＯＭ６０のＶＣＣ端子に印加される電源電圧はＶＣＣであり、典型的な例では３．３Ｖが用いられる。このようにする理由は、以下の（１）、（２）の通りである。 Here, in each driver 1C100, the power supply voltage applied to the VDD terminal is VDD, and is typically 5V. On the other hand, the power supply voltage applied to the VCC terminal of the EEPROM 60 is VCC, and 3.3V is used in a typical example. The reason for this is as follows (1) and (2).

Claims

A plurality of light emitting elements, a drive circuit for driving the light emitting elements on / off based on a drive on / off command signal, and a mode conversion command signal arbitrarily set to a different logical state from the drive on / off command signal An image forming apparatus including an optical print head having an auxiliary circuit for generating a reference signal,
The drive circuit is
Mode conversion command means for generating the mode conversion command signal;
A drive amount command means for outputting a drive amount command signal for instructing a drive amount for the light emitting element based on the mode conversion command signal generated by the mode conversion command means and the reference signal generated by the auxiliary circuit; ,
Driving means for driving the light emitting element on / off based on the driving on / off command signal and the driving amount command signal;
An output terminal for outputting the mode conversion command signal generated by the mode conversion command means to the auxiliary circuit;
An image forming apparatus comprising: