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:
Oct. 31, 1978
Filed:
Jun. 02, 1977
Konishiroku Photo Industry Co., Ltd., Tokyo, JP;
Abstract
A method of purging or cleaning ink passages of an ink jet recording device of the type in which a series of ink droplets is ejected from an orifice of a printing head towards a recording medium by the volume displacement of a pressure chamber provided in the printing head, including the steps of applying pressure required for purging to ink within an ink supply source, keeping a valve to open wide and forming a flow of ink in ink passages in one direction towards the orifice, thereby to remove bubbles and impurities present in the ink passages together with the discharged ink. Furthermore, in the present invention, there is provided a suction means associated with the ink jet recording device, which is used to obtain more excellent purging effect in combination with the above-mentioned steps.