DEVELOPING DEVICE AND PROCESS CARTRIDGE COMPRISING FIRST AND SECOND SEALING MEMBERS AND ELECTROPHOTOGRAPHIC IMAGE FORMING APPARATUS COMPRISING A DEVELOPING DEVICE COMPRISING FIRST AND SECOND SEALING MEMBERS

   
   

A developing device includes a developing member for developing the latent image, an exposure optical path, a developer containing portion, a vent port for allowing air in the inside of the developer containing portion to pass therethrough, a first sheet member for preventing scattering of the developer into the exposure optical path, disposed between the exposure optical path and the developing member and contacted with an electrophotographic photosensitive member, a first sealing member for preventing leaking of the developer from the developer containing portion, contacted with one end portion of the electrophotographic photosensitive member in its longitudinal direction, and a second sealing member for preventing leaking of the developer from the developer containing portion, contacted with another end portion of the electrophotographic photosensitive member in its longitudinal direction.

Um dispositivo tornando-se inclui um membro tornando-se para desenvolver a imagem latente, um trajeto ótico da exposição, um colaborador que contêm a parcela, um porto do respiradouro para permitir o ar no interior do colaborador que contem a parcela para passar therethrough, um primeiro membro da folha para impedir dispersar do colaborador no trajeto ótico da exposição, disposto entre o trajeto ótico da exposição e o membro tornando-se e contatado com um membro photosensitive electrophotographic, um primeiro membro do sealing para impedir escapar do colaborador do colaborador que contem a parcela, contatado com uma parcela de extremidade do membro photosensitive electrophotographic em seu sentido longitudinal, e de um segundo membro do sealing para impedir escapar do colaborador do colaborador contendo a parcela, contatada com uma outra parcela de extremidade do membro photosensitive electrophotographic em seu sentido longitudinal.

 
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