The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jul. 24, 2001
Filed:
Mar. 09, 1999
Hirokatsu Shimada, Machida, JP;
Other;
Abstract
The present invention provides a direct printing apparatus which prevents image noise from generating due to adhesion of toner to a spacer and enables to form a good image even if the apparatus is operated for a long period. The direct printing apparatus comprises a bearing member,for bearing printing particles,thereon, the printing particles,being charged to a predetermined polarity, a backing electrode,opposed to the bearing member,and a printing head,disposed between the bearing member,and the backing electrode,The printing head,has a plurality of apertures,through which the printing particles,can propel and a plurality of electrodes,disposed around the plurality of apertures,The printing particles,are directly deposited on a print medium,which is conveyed between the backing electrode,and the printing head,A positioning spacer,is provided between the bearing member,and the printing head,so that the surface of the bearing member,comes into contact with the spacer,At least a part of the spacer,which comes into contact with the bearing member,is made of a material which is apt to be worn by the printing particles