Printer

Details Printer Printer

1997-11-04

1999-11-30

Bennett, Christopher A.

Typewriting machines

Sheet or web

For feeding web record-medium

400613, B41J 1170

Patent

active

059930934

ABSTRACT:
A clamshell style printing apparatus for printing on print media, including linerless media, and a method for controlling a printing apparatus. The printing apparatus includes a main circuit board assembly located within a printer housing member that mounts relatively low speed electronic components, and which includes a dual-sided circuit board. A control board assembly is electronically coupled to the main board assembly via a SIMM connector and mounts relatively high speed electronic components, such as a microprocessor, RAM, ROM, system clock and Ethernet controller. The printer apparatus defines a print media path that extends from a print media supply to a cutting mechanism and includes a subassembly for mounting the printhead and a rotary cutter element that is movable between opened and closed positions. An alignment mechanism maintains alignment of stationary and rotary cutter members when the subassembly is moved to the closed position. A key defining a slot and forming part of the subassembly is engageable with the pin forming part of the stationary cutter member. When adapted to print on linerless media, the printer includes a base member which includes an integral portion defining a recess for a platen roller and a portion defining a guide plate for guiding a leading end of the print media from the printing station to a cutting station. The portions are covered with a release coating, such as a plasma coating or Teflon.RTM.. To further reduce sticking of media to printer components, the rotary cutter element is Teflon.RTM. coated. The control system includes sequences for unjamming the printer or to inhibit operation of components, such as the cutter in the event print media has been improperly fed.

REFERENCES:
patent: 4907014 (1990-03-01), Tzeng et al.
patent: 5062722 (1991-11-01), Shiozaki et al.
patent: 5816720 (1998-10-01), Brannan et al.

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