A developing agent carrying member including magnets is disposed facing an image carrying member, a two-component developing agent containing toner and magnetic carrier is carried in a form of a layer on a surface of the developing agent carrying member, speed difference is generated between the developing agent carrying member and the magnets so as to cause a magnetic brush to flow while forming the magnetic brush on a developing agent layer at least in a facing region where the developing agent carrying member and the image carrying member face one another, and free toner separated from magnetic carrier in a flow of the magnetic brush adheres onto a latent image formed on the image carrying member, whereby developing is performed. A line-shaped latent image is developed with the toner starting from a middle portion thereof in a width direction of the line-shaped latent image.

 
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> Electro-optical device, method of checking the same, and electronic apparatus

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