Printing apparatus

Details Printing apparatus Printing apparatus

1986-06-13

1988-09-27

Pieprz, William

Typewriting machines

Including adjustment for optimum printing plane

By adjustment of platen relative to carriage

400649, 292201, B41J 1108, B41J 1120

Patent

active

047737727

ABSTRACT:
A printing apparatus is disclosed in which a platen is mounted on a forms compensation device which is pivotally mounted so as to enable record media of varying thicknesses to be placed between the platen and associated printing elements to enable printing thereon. The forms compensation device is held in printing position by latch elements thereon which cooperate with complementary elements on the printer frame. The latch elements are associated with oppositely acting axially positioned armatures of a single-coil solenoid mounted on the forms compensation device, so that the solenoid is energized only when it is desired to move the latch elements out of engagement with the complementary elements on the printer frame, to enable the forms compensation device to be moved to a remote non-printing position in which record media may readily be inserted between the platen and the associated printing elements. The forms compensation device is so configured that it moves to said remote position under the force of gravity when said latch elements are moved out of engagement with the complementary elements on the printer frame.

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Anderson, "Automatic Adjusting . . . Station" IBM Technical Disclosure Bulletin, vol. 24, No. 11B, pp. 6158-6159, 4-81.

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