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US 3,965,476 AGranted
Laser printing method and system
AssigneePer E. Wenander
InventorsPer E. Wenander, Carl E. Lundquist
Life of this patent
Estimating the term…
Abstract
A non-impact radiant energy printer for producing indicia such as alphanumeric characters on an untreated receiving media such as an ordinary piece of paper. The printer provides memory storage capability for automatically printing textual material together with display and editing facilities.
Claims28
A method of recording on a receiving medium comprising the steps of:
- a. directing a first radiant energy beam through an aperture mask thereby providing a first aperture-shaped beam,
- b. displaying said first aperture-shaped beam by moving an optical element in a first direction,
- c. storing data signals corresponding to said displayed first aperture-shaped beam,
- d. subsequent to said displaying and storing steps directing a second radiant energy beam through said aperture mask for providing a second aperture-shaped beam corresponding to said stored data signals, and
- e. marking a surface of said receiving medium with said second aperture-shaped beam by moving said optical element in a second, opposite direction.
2 more elements
A non-impact printing device for forming indicia on a receiving medium comprising:
- a. a radiant energy source for providing a radiation beam,
- b. a mask having a plurality of apertures therethrough, said apertures in the shape of indicia to be formed on said receiving medium,
- c. memory storage means,
- d. data input means connected to the memory storage means for inputting electrical signals to said memory storage means, said electrical signals corresponding to said apertures in said mask,
- e. means for rotating said mask for positioning said apertures for alignment with said radiation beam,
- f. means for detecting the position of said rotating mask and for providing detection signals associated with said apertures in said mask,
- g. means for viewing the indicia to be printed by an operator comprising:
- 1. displaying means,
- 2. means for comparing said detection signals with said stored electrical signals and for providing first energizing signals to said radiant energy source to turn on said radiant energy source thereby providing a first plurality of aperture-shaped radiation beams,
- 3. first optical means for projecting said first plurality of aperture-shaped radiation beams onto said displaying means, said first optical means moving a first direction substantially traversing the length of said displaying means.
- h. means for directly charring said receiving medium for printing said indicia comprising:
- second optical means for projecting a second plurality of aperture-shaped radiation beams onto said receiving medium, said second optical means moving in a second direction, opposite said first direction, said second plurality of aperture shaped radiation beams produced by second energizing signals from said comparing means to said radiant energy source and directly charring said receiving medium for printing said indicia.
9 more elements
Dependencies are inferred from the claim text.