US 5,042,953 AGranted

Paper guide means for printer equipment

AssigneeSiemens Aktiengesellschaft

InventorsRichard Thurner, Hans Kusmierz

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Abstract

The paper guide means is composed of a paper trough fashioned of one piece as a carrier part at which all parts needed for guidance and positioning of the recording medium are combined and in which roller carriers seated moment-free and in pendulum fashion are provided for the acceptance of paper pressing rollers. The pressing power for conveying the paper is exerted by simple, straight bending rods that act on the roller carriers. The spring lift of these bending rods and, thus, the pressing power can be set in a plurality of steps with pivotable adjusting levers. As needed, the adjusting levers can be connected to one another by a coupling rod and can thus be pivoted only in the same direction. The completely pre-assembled paper trough is exactly allocated to the printer equipment as well as to the paper auxiliaries such as feeder, single sheet auxiliary or forms auxiliary via centering noses and is screwed to the printer frame in order to secure the dimensional stability.

Claims9

Dependent claims

Paper guide means for conveying and positioning recording media (14) in printer equipment, having a friction drive that conveys the recording medium (14) and is composed of a conveyor drum (15) and of at least one roller carrier (2) having appertaining paper pressing rollers (5), and having a trough-shaped paper guide element (117) adapted to the conveyor drum (15) that, together with the conveyor drum (15) forms a guide channel for the recording media (14) to be printed, comprising:

the design of the paper guide element as a one-piece carrier part (117) attachable to a printer equipment and having catch, centering and connecting element (107, 110, 111, 112, 113, 201, 202) for, on the one hand a positionally exact fastening to the carrier part (117) of elements that serve for guidance, positioning and for conveying the recording medium (14), and, second, a positionally exact fixing to the printer equipment of the carrier part (117) preassembled with the elements, whereby the elements serving the purpose of guiding, positioning and conveying the recording medium (14) having at least
a roller carrier (2) seated directly at the carrier part (117) free of moment and in pendulum fashion, this roller carrier pressing the paper pressing rollers (5) against the conveyor drum via an adjustable spring power,
a sensor means (11, 12, 17) for monitoring and positioning the recording medium (14), said sensor means being centered with exact position and secured directly to a side wall of the carrier part (117),
a centerable paper pressing apron (7) extending over an entire front wall of the carrier part (117) and having an allocated fastening ledge (8) that assures a defined angle of attack of the paper pressing apron (7) relative to the conveyor drum (15) and a defined pressing power (FS) of the paper pressing apron (7) against the conveyor drum (15).

1 more element

Dependencies are inferred from the claim text.