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:
Aug. 27, 1991
Filed:
Feb. 03, 1989
Masaki Yoshioka, Kyoto, JP;
Kenji Nakai, Kyoto, JP;
Kenji Watanabe, Kyoto, JP;
Takaharu Yamamoto, Kyoto, JP;
Takeji Hashimoto, Kyoto, JP;
Abstract
An image forming member, e.g. a pen or a cutter (for cutting image patterns), which member requires to be lowered onto and applied with a given pressure to a writing surface, is controlled in two modes. In a position control mode, the image forming member is controlled by means of a closed loop circuit by which it is lowered and positioned at a very small distance off of the writing surface. In accordance with a second, pressure control mode, the image forming member is controlled by means of an open loop circuit. With the aid of the open loop circuit the member is lowered and then applied with a given pressure to the writing surface. Thus, accurate and rapid controlling of such an image forming member is achieved.