Printer having document transfer device with plate-shaped stop means

Claim 1

A printer for printing on a document, comprising: a print head; a paper path for the document to be printed, said paper path including a lower support surface; and a document transfer device arranged in connection with said paper path, said document transfer device comprising: a plurality of drive pulleys arranged in parallel for gripping an underside of the document and positioned in at least two sequential rows; and a plurality of spring-actuated pressure rollers arranged in parallel along their rotational axes and disposed transversely with respect to said paper path in first and second rows sequentially above said drive pulleys so as to form pairs of drive pulleys and pressure rollers, with said pressure rollers pressing the document from above against said drive pulleys; said document transfer device further comprising: a plate-shaped stop means operative to move up and down with respect to said paper path for straightening the document, wherein said stop means is arranged between a line passing through the rotational axes of said pressure rollers positioned in the first row of the pairs of said drive pulleys and said pressure rollers and a line touching a rear portion of said pressure rollers, said stop means being positioned above said lower support surface of said paper path, wherein said stop means extends between said pressure rollers of the first row of pressure rollers and forms a continuous bar across said paper path.