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:
Jan. 06, 1998
Filed:
May. 27, 1997
Tsutomu Ikehata, Sakado, JP;
Hiroshi Ikeda, Tokorozawa, JP;
Citizen Watch Co., Ltd., , JP;
Abstract
A gap adjusting device moves a print head vertically via a carriage shaft eccentrically supported by a displacement gear. The displacement gear is provided with a gap lever, which restricts rotational movement of a driving force transmission mechanism by abutting on a stop when a pulse motor drives the print head to move away from a platen. The pulse motor becomes out of phase, thereby defining the position as a reference position. The amount of rotation of the pulse motor is adjusted, starting from the reference position, thereby adjusting a vertical position of the print head. The reference position of the print head is established without the risk of causing damage to dot pins, by defining the initial condition of the pulse motor.