Auto paper size sensing mechanism for an adjustable cassette
US5333852A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jul 19, 1993 |
| Grant date | Aug 2, 1994 |
| Priority date | — |
| Expiry date | Jul 19, 2013 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB65H2511/10
- WIPO fieldHandling
- WIPO sectorMechanical engineering
Abstract
An adjustable sheet cassette for use in apparatus feeding sheets and being movable in the apparatus from a sheet feeding position to a nonsheet feeding position, the adjustable cassette having a sheet stack support platform capable of supporting stacks of sheets of a plurality of length and width dimensions, at least one sheet edge guide movable in a path in the cassette to accommodate stacks of sheets of different length or width dimensions, the sheet edge guide having attached thereto an actuator arm having a plurality of switch actuators for selectively actuating a plurality of switches on a circuit board on the main body of the apparatus when the cassette is in sheet feeding position in the apparatus, the actuators being located to selectively actuate the switches on the main body of the apparatus which represent one of a plurality of sheet sizes, whereby when each of the switches is actuated it generates a unique resistance in the circuit on the circuit board, the resultant of these unique resistances determining a resultant voltage signal to the main controller on the main body of the apparatus which allows the controller to interpret the length or width dimension of the shee…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.