Device for automatically detecting thickness of printing sheet i

Details Device for automatically detecting thickness of printing sheet i Device for automatically detecting thickness of printing sheet i

1994-03-21

1995-12-12

Wiecking, David A.

Typewriting machines

Including adjustment for optimum printing plane

Responsive to thickness of record-medium

400 55, B41J 25308

Patent

active

054743923

ABSTRACT:
In a printer, a carrier having a print head and an indicator mounted thereon is moved toward and away from the platen, so that the carrier is at one of a retracted position at which a distance between the print head and the platen is at a maximum, a contact position at which a switch member mounted on the indicator is in contact with a surface of a printing sheet, and a printing position at which the carrier is slightly retracted from the contact position to define a predetermined gap between the print head and the printing sheet. A switch member for detecting a printing sheet, i.e., a thickness of the sheet, is mounted on a flat portion of the indicator.

REFERENCES:
patent: 4602135 (1986-07-01), Phalen
patent: 4652153 (1987-03-01), Kotsuzumi et al.
patent: 4676675 (1987-06-01), Suzuki et al.
Abstract, Japanese Patent Publication (Kokai) No. 61-31275, Patent Abstracts of Japan, dated Jul. 2, 1986.
"Sensor for Paper Positioning in Printer"; Anonymous; Research Disclosure p. 26303, Mar. 1986.

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