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. 06, 1998
Filed:
May. 28, 1997
International Business Machines Corporation, Armonk, NY (US);
Abstract
In the present invention, the platen bar is compositely formed of three materials. For a sole layer, a material is used which has high hardness and strength, and has a property that the repulsion against the impact of the print wires is large. For an elastic layer, a material is used which transmits less vibration to the platen base in the print operation and absorbs the impact when the wires of a printhead strike the sole layer. For platen bases, a material is used which has a very high hardness, a high molding precision, and less dimensional change due to temperature change or change with time. The elastic layer is exposed on the surface and a gap roller is positioned at the exposure location. With this, the occurrence of the dent by the gap roller can be prevented when the printing on a copy form is performed.