Envelope Feed Device for Printer
Original Publication Date: 1989-Mar-01
Included in the Prior Art Database: 2005-Jan-27
A known dot matrix printer experiences difficulty when printing on envelopes due to the fact that their thickness is generally such that the paper drive rollers have difficulty in pushing them along the paper path between the printhead and platen without stalling or skewing the envelope. Opening the space between the printhead and the platen, the print gap, wide enough for easy accommodation of envelopes, increases the flight distance of the print wires to the extent that excessive (Image Omitted) wire breakage occurs when printing on papers thinner than envelopes. The present embodiment solves this problem by providing an Envelope Feed Device, to open the print gap, which must be manually held in the operated position while printing envelopes. When the operating lever is released, a normal print gap is automatically restored.