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US 4,068,948 AGranted
Copying apparatus
OwnerGerhard Ritzerfeldinventor
Life of this patent
Estimating the term…
Abstract
An electrostatic or xerographic copying apparatus having a transparent support on which an original is placed face down so as to be copied through the support has a first arrangement capable of holding first members which form with one another a gap, and a second arrangement capable of holding an original which overlies the first members so that portions of its face are visible through this gap. An arrangement is provided for shifting the second arrangement relative to the first arrangement so that different increments of the original can be exposed in the gap.
Claims10
A copying method comprising the steps of:
- supporting an original face down on a transparent support;
- interposing a mask having two parts forming a slot between said original and said support and exposing only a portion of said original through said slot to a scanner on the other side of said support;
- repeatedly scanning said original through said support with said scanner and producing a succession of copies each carrying only that portion of the original exposed during the respective scan through said slot;
- automatically relatively displacing said original and said mask after each scan to expose a different portion of said original to said scanner for the subsequent scanning, whereby each scan produces a copy carrying a replica of a different portion of said original;
- and
- varying the width of said slot by relatively displacing said parts.
3 more elements
A copier comprising:
- a transparent support adapted to receive an original face down;
- copy means for scanning the original through said support and for producing a copy carrying that material on the original exposed through said support;
- a mask adapted to underlie the original and including
- a first mask part,
- a first clamp holding said first mask part at said support,
- a second mask part,
- a second clamp holding said second mask part at said support spaced from said first part and defining therewith a slot alignable with different portions of the original, and
- means for relatively displacing said first and second clamps to vary the width of said slot, whereby different portions of the original are exposed to said copy means through said slot depending on its position;
- transport means for relatively displacing the original and said mask in a stepwise manner;
- and
- control means connected between said copy means and said transport means for operating said transport means to relatively displace the original and said mask through one step after each scan of the original by said copy means.
8 more elements
A copier comprising:
- a transparent support adapted to receive an original face down;
- copy means for scanning the original through said support and for producing a copy carrying that material on the original exposed through said support;
- a mask adapted to underlie the original and forming a slot alignable with different portions of the original, whereby different portions of the original are exposed to said copy means through said slot depending on its position;
- transport means for relatively displacing the original and said mask in a stepwise manner and including
- a clamp holding the original,
- drive means for displacing said clamp in steps along said mask, and
- means for sensing the position of said clamp;
- and
- control means connected between said copy means and said transport means for operating said drive means to relatively displace the original and said mask through one step after each scan of the original by said copy means.
6 more elements
Dependencies are inferred from the claim text.