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:
Dec. 21, 1976
Filed:
Nov. 22, 1974
Richard C Hickey, Plano, TX (US);
Docutel Corporation, Dallas, TX (US);
Abstract
An automatic character printer includes a transport for indexing a receipt form by means of flexible belts having extending pins for engaging pin feed holes in the form. The receipt form includes a leading edge indexing mark and a trailing edge indexing mark to interrupt a light beam at an index sensor for establishing form position with respect to a character wheel at the print station. To distinguish between the form leading edge indexing mark and the form trailing edge indexing mark, a light interrupting signal wheel, synchronized with the rotation of the flexible belts, generates indexing signals related to the position of the belt extending pins. A receipt form is in a known location when the signal wheel and a form index sensor both generate a signal pulse. Upon receipt of a form start signal from a control computer, a hammer solenoid actuates a print hammer against a resilient pad to force the receipt form in contact with a character wheel. Recording ink for the character wheel is provided by a ribbon from a ribbon feed system including sensors for detecting ribbon movement and ribbon operation.